Make yourself visible and let companies apply to you.
Roles
Frontend Engineer Jobs in London
Overview
Looking for top Frontend Engineer jobs in London? Haystack features the latest frontend developer roles in the London tech scene, connecting you with leading companies seeking skilled professionals in JavaScript, React, Angular, and more. Start your search today to find the perfect frontend engineering opportunity in London’s booming IT industry.
Automation Engineer
Stealth IT Consulting Limited
London
Remote or hybrid
Mid
£55,000
RECENTLY POSTED
+1

Currently working with a leading IT Consultancy who are on the search for Automation Assurance Engineers on a permanent basis. Salary up to £55,000 per annum Remote with occasional client visits Candidates must be eligible for Security Clearance No Sponsorship available The Role In this position, you will be a key contributor to the delivery of high-quality engineering solutions. Youll work across disciplines in small, collaborative teams, partnering with engineers from varied technical backgrounds to design and build services that are robust, scalable, and maintainable. You will be part of a wider engineering community, collaborating with peers to solve complex technical challenges and deliver work at scale. The environment encourages shared learning, professional growth, and continuous improvement across projects. Youll take ownership of technical quality, working closely with engineering and design colleagues to ensure confidence in delivery. Alongside this, youll help evolve team ways of working by refining processes, tools, and best practices. Knowledge sharing is central to the role. Youll support the development of others through mentoring and coaching, while also investing in your own growth by exploring new technologies and approaches. Youll actively promote a culture of innovation, inclusion, collaboration, and self-organisation. The role also involves working closely with clients and internal stakeholders to identify new opportunities, contribute to collaborative initiatives, and support open-source or community-driven work where appropriate. To succeed in this role, youll bring a combination of the following experience and capabilities: Essential experience: ISTQB certification (Foundation level as a minimum). Equivalent experience or alternative qualifications may be considered. Hands-on experience with core testing approaches, including exploratory, integration, manual, and functional testing. Experience contributing to or building test frameworks using Java and/or JavaScript. Strong background in developing automated tests across backend and frontend systems using tools such as Selenium, Playwright, Cucumber, REST-based testing frameworks, or similar. Experience working within Agile delivery teams. Familiarity with distributed version control platforms such as GitHub or GitLab. A proactive mindset, with the ability to self-manage, identify gaps, and take ownership of improvement areas. TPBN1\_UKTJ

Software Developer
JAM Recruitment Ltd
London
In office
Mid - Senior
£595/day
RECENTLY POSTED
+3

Location: London

Day Rate: £595 per day (Umbrella, inside IR35, based on an 8-hour day)

Clearance: Live & transferrable SC required, ideally Home Office SC

Start Date: Subject to SC transfer

We’re looking for a full-stack Java Software Engineer to join a fast-growing team delivering high-impact solutions for UK Government and Law Enforcement sectors. You’ll work in agile, multi-disciplinary teams solving complex problems with cutting-edge technologies, while contributing to software solutions you can be proud of.

What You’ll Do

Design, develop, and deliver high-quality software solutions in Java, React, PostGres, Kafka, ElasticSearch, AWS, Ansible, REST, Docker, API Gateways, JavaScript, Mongo, and SQL.

Work hands-on across the full stack while ensuring delivery pipelines, NFRs, and industry best practices are met.

Collaborate with enterprise teams in an agile environment, shaping technical solutions and mentoring peers.

What We’re Looking For

Proven experience as a full-stack Java developer , with hands-on knowledge of modern frameworks, databases, APIs, and cloud services.

Strong understanding of agile delivery practices and enterprise software development pipelines.

A proactive, collaborative mindset and a passion for delivering innovative, high-quality software.

Live & transferrable SC clearance essential (Home Office SC preferred).

If you’re an SC Cleared Software Developer looking for your next contract within a secure, cutting-edge programme, I’d be keen to speak with you.

Apply now or message me directly for a confidential discussion.

TPBN1_UKTJ

Senior C# Software Engineer
Spectrum It Recruitment Limited
City of London
Hybrid
Senior
£100,000
RECENTLY POSTED

Senior Developer | Senior Software Engineer C#, .Net, Typescript, JavaScript Hybrid, 1-2 days near Liverpool Street Salary, £85,000 to £95,000 + benefits If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters, please read on. We're hiring for a growing, well-funded SaaS business building a sophisticated, data-driven platform that helps organisations understand and manage complex information at scale. The company is in an early investment phase with strong growth ambitions, offering real scope for progression and the chance to help shape both the product and engineering direction. You'll be part of a bright, collaborative team of talented software engineers and academically strong problem-solvers who value clean design and thoughtful architecture. The Role As a Full Stack Engineer, you'll design and deliver features across a modern stack, working on scalable backend services and intuitive front-end applications that present complex data clearly. Key Responsibilities: Building full-stack features using C#, .NET and TypeScript/React Developing scalable backend services for complex data workflows Creating responsive, user-friendly interfaces Exploring new technologies and contributing to technical improvements Working collaboratively in an agile engineering environment Essential Skills & Experience Strong commercial experience as a Software Developer or Full Stack Engineer 5+ years experience with C# / .NET and modern JavaScript or Typescript (React preferred) Strong problem-solving ability and a collaborative mindset A Bachelor's degree in Computer Science or Software Engineering. *\* 2.1 or above \ Why Join? Technically challenging, data-driven SaaS product Strong investment for growth Work alongside a highly capable and intellectually strong team Excellent learning opportunities and clear progression as the company grows If you're looking for a role where you can learn quickly, tackle interesting technical challenges, and grow with an ambitious product business, hit apply ! Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy. TPBN1\_UKTJ

Senior Mobile iOS Developer (Remote)
Stott & May Professional Search Limited
London
Fully remote
Senior
£90,000
RECENTLY POSTED
+7

A leading retailer are looking for a Senior Mobile iOS Developer to join their Mobile Team to contribute to the development and evolution of their Mobile App.

As the Senior Mobile iOS Developer, you will be responsible for building and maintaining the iOS version of the app, ensuring it delivers a pixel-perfect, performant, and luxury-aligned experience for customers.

You will be a high-performing developer who thrives on clean architecture, elegant code collaborative delivery whilst working as part of an Agile cross-functional team.

Skills and Experience

* Strong proficiency in Swift and iOS SDKs, with a deep understanding of UIKit, SwiftUI, Combine, and Core frameworks.
* Experience with RESTful APIs, JSON, and mobile architecture patterns (MVVM, Clean Architecture).
* Familiarity with Xcode, GitHub, mobile CI/CD tools, automated testing frameworks and the app store deployment process.
* Proven experience delivering high-quality iOS applications in Agile environments.
* Exceptional communication skills and ability to collaborate effectively with cross-functional teams.
* Experience working with design systems and translating Figma or Sketch designs into pixel-perfect implementations.
* Familiarity with analytics platforms (Firebase), crash reporting tools (Crashlytics), and user feedback loops.
* Understanding of mobile security best practices, GDPR compliance, and accessibility standards.
* Experience using backlog management tools like Azure DevOps or Jira.
* Familiarity with Agile methodologies such as Scrum and Kanban and working in cross-functional product teams.

If you are a Senior Mobile iOS Developer, that has a passion for new technology, industry trends and a particular interest in adhering to UI/UX design principles, then send your CV to be considered for this role.

Full Stack Developer (.NET Core / Angular)
Hays Technology
London
Hybrid
Mid - Senior
£50,000 - £70,000
RECENTLY POSTED

Full Stack Developer - Asset Management Firm - London / Manchester (Hybrid) - Basic salary of up to 65,000 + Bonus and Additional Benefits package

Hays are currently working exclusively with a leading asset management firm assisting them in the recruitment of a Full Stack Developer on a permanent, full-time basis. This role will require candidates to work in a hybrid capacity, 3 days per week in office, in either Central London or Manchester. This is a great opportunity for an enthusiastic and skilled developer to join an established development team within a high-end financial services firm.

The role

We’re looking for an experienced and enthusiastic full-stack developer to join the team on a permanent basis. This person will join a 5-person development team and will be responsible for collaborating with various cross-functional teams to translate business requirements into scalable and efficient software solutions that help drive the business to new heights. You will also be responsible for improving performance in the business’ cloud hosted environment, while also acting as an SME on all architectural and tech stack improvements.

The CEO and CFO of this business are passionate advocates of Artificial Intelligence, with a significant budget recently allocated to this area, in the hope of using AI to drive commercial performance. This would an excellent opportunity for a skilled developer with a curiosity and passion for AI technologies to develop these skills in a professional technology environment

Skill set requirements:

  • Professional experience in a software development role, specifically .NET Core, SQL Server, and Cloud Native Technologies and Services (Azure)
  • Strong Front End Development and UI Expertise (Angular)
  • Experience in translating complex requirements into simple, effective technology solutions for senior stakeholders.
  • A curiosity and passion for AI technologies and their use within a professional technology environment
  • Experience within Financial Services, specifically asset management / AML / Financial Crime (Beneficial)
  • Detail focussed with a First Class University Degree in STEM subject (Beneficial)

What you’ll get in return:

  • Starting salary of up to 65,000
  • Up to 12% pension (6% cont. / 6% match)
  • 25 days annual leave + Bank holidays
  • Hybrid working option (3 days / 2 days)
  • Annual bonus of between 10% and 25%, depending on personal and company performance.

Desired Skills and Experience Software, Developer, Asset Management, AML, C#, .NET, .NET Core, angular, UI, Front End, Azure, SQL Server, Financial Services, Lead Developer, Senior Developer, AI, Artificial Intelligence,

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C’s, Privacy Policy and Disclaimers which can be found at (url removed)

SharePoint 365 Developer
Pontoon
London
Hybrid
Junior - Mid
£400/day - £415/day
RECENTLY POSTED

Join Our Team as a SharePoint 365 Developer!

Located London (3 days a week in office)

Rate: £415 Per Day Umbrella (no movement)

Duration: Minimum 6 months but likely long term.

Are you an innovative SharePoint Developer looking for an exciting opportunity in the financial sector for one of the biggest banks in the world? We invite you to bring your expertise and creativity to our dynamic team at a leading Financial Institution & Insurance provider based in Greater London!

About Us:
We pride ourselves on being at the forefront of technology in the finance industry. With a commitment to excellence and innovation, we empower our team to deliver top-notch solutions. Our office is just a cheerful 6-minute stroll from Crossharbour train station, making your daily commute a breeze!

What You’ll Do:
As a SharePoint Developer, you’ll play a pivotal role in designing, developing, and maintaining our SharePoint applications. Your contributions will enhance collaboration and streamline processes across the organization.

Your responsibilities will include:

  • Designing and implementing SharePoint solutions tailored to our business needs.
  • Collaborating with stakeholders to gather requirements and translate them into technical solutions.
  • Ensuring system performance, security, and reliability through best practices.
  • Troubleshooting and resolving issues to enhance user experience.
  • Providing training and support to team members and users.

What We’re Looking For:
We want someone who is not only skilled but also passionate about SharePoint development.

If you’re a proactive problem-solver with a great attitude, you’ll fit right in! Ideal candidates will possess:

  • Proven experience in SharePoint development (preferably SharePoint Online).
  • Strong knowledge of SharePoint Framework (SPFx), REST APIs, and Microsoft Power Platform.
  • Familiarity with JavaScript, HTML, CSS, and related web technologies.
  • Excellent communication skills to engage with both technical and non-technical stakeholders.
  • A team-oriented mindset and a willingness to learn and grow.

Ready to Make an Impact?
If you’re excited about the prospect of working in a fast-paced, rewarding environment, we’d love to hear from you! This is your chance to contribute to meaningful projects that shape the future of our organisation.

How to Apply:
Please submit your CV along with a brief cover letter detailing your experience and why you’re a great fit for this role. We can’t wait to meet you!

Join us in transforming the financial landscape with your SharePoint expertise. Apply now and let’s embark on this exciting journey together!

We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention.

Adecco is a disability-confident employer. It is important to us that we run an inclusive and accessible recruitment process to support candidates of all backgrounds and all abilities to apply. Adecco is committed to building a supportive environment for you to explore the next steps in your career. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.

Senior iOS Developer - London
Adecco
London
Hybrid
Senior
£65,000 - £90,000
RECENTLY POSTED

Senior iOS Developer
London (Hybrid - 2 days per week in the office)
Salary: £65,000 - £90,000 DOE

The Role

We’re looking for a Senior iOS Developer to join a growing Mobile team. You’ll play a key role in maintaining and evolving a suite of high-traffic consumer apps, working within cross-functional squads alongside product managers, designers, and fellow engineers.

You’ll be involved throughout the full software development life cycle, from concept and design through to deployment, while also using modern AI-powered development tools such as GitHub Copilot and ChatGPT to improve efficiency and code quality.

What Sets This Company Apart?

  • A dynamic and inclusive working environment that values diversity
  • Talented, high-performing teams focused on delivering exceptional user experiences
  • A culture built around collaboration, where everyone’s ideas and perspectives are valued

Key Responsibilities

  • Drive the delivery of new features while contributing to technical direction
  • Work closely with product and design teams to deliver polished, user-focused experiences
  • Develop clean, scalable Swift code using SwiftUI and UIKit
  • Promote engineering best practices including TDD and CI/CD pipelines
  • Mentor and support other engineers within the team

About You

  • Strong commercial experience developing iOS applications using Swift, SwiftUI, and UIKit
  • Solid understanding of async/await and Combine
  • Experience working in Agile environments, delivering value quickly and iteratively
  • Familiarity with XCUI testing and Git workflows
  • A collaborative mindset and enthusiasm for learning and improving

Benefits

  • 27 days holiday (increasing to 30 with service) plus bank holidays
  • Bonus scheme and up to 6% employer pension contribution
  • Enhanced shared parental leave - up to 6 months paid
  • Work-from-anywhere scheme - up to 2 weeks per year
  • Access to mental health support and financial wellbeing coaching

If you’re excited about building high-impact mobile products and want to work in a collaborative, high-performing engineering environment, we’d love to hear from you.

Accessibility & Inclusion
Adecco is a Disability Confident employer. We are committed to creating an inclusive and accessible recruitment process and welcome applications from candidates of all backgrounds and abilities. If you require any reasonable adjustments during the recruitment process, please let us know and we will be happy to support you.

Senior Android Developer - London
Adecco
London
Hybrid
Senior
£65,000 - £90,000
RECENTLY POSTED

Senior Android Developer
London (Hybrid - 2 days per week in the office)
Salary: £65,000 - £90,000 DOE

The Role

We’re currently looking for a Senior Android Developer to join a growing Mobile team. In this role, you’ll help develop and enhance a suite of high-traffic consumer apps used by millions.

You’ll work within cross-functional squads alongside product managers, designers, and engineers, contributing throughout the entire software development life cycle, from planning and design through to release and optimisation.

About the Company

Our client is driven by a clear mission: helping millions of people across the UK save money when it matters most. Through a range of well-established consumer platforms, their products support more than 20 million visitors each month, providing tools and insights that make a real difference to everyday households.

Why Join?

  • A supportive, inclusive workplace that encourages open thinking and collaboration
  • High-performing teams dedicated to delivering outstanding digital experiences
  • A culture that values diverse perspectives and ensures everyone feels heard

Key Responsibilities

  • Take ownership of delivering new features and contribute to technical direction
  • Work closely with product and design teams to create high-quality user experiences
  • Develop clean, scalable Kotlin code using Jetpack Compose
  • Promote engineering best practices including TDD, CI/CD, and automated testing
  • Provide guidance and mentorship to other developers in the team

About You

  • Strong experience developing Android applications using Kotlin and Jetpack Compose
  • Good understanding of mobile architecture, design patterns, and scalable app design
  • Comfortable working in Agile development environments with fast release cycles
  • Experience using AI-powered development tools to improve productivity and quality
  • A collaborative team player who enjoys sharing knowledge and continuously improving

Benefits

  • 27 days annual leave, increasing to 30 with service, plus bank holidays
  • Performance-related bonus scheme
  • Pension scheme with up to 6% employer contribution
  • Enhanced shared parental leave - up to 6 months fully paid for both parents
  • Work-from-anywhere scheme - up to 2 weeks per year
  • Access to mental health support platforms and financial wellbeing coaching

If you’re passionate about building high-impact mobile applications and want to be part of a collaborative, forward-thinking engineering culture, we’d love to hear from you.

Accessibility & Inclusion
Adecco is a Disability Confident employer. We are committed to ensuring our recruitment process is inclusive and accessible to all candidates. If you require any reasonable adjustments during the application or interview process, please let us know and we’ll be happy to support you.

Senior Software Engineer
Oscar Associates (UK) Limited
London
Hybrid
Senior
£85,000
RECENTLY POSTED
+7

Hybrid (2-3 days onsite, Central London) | £75,000 - £85,000 + benefits A high-growth technology company operating at the intersection of real-time data, analytics, and cutting-edge product development is entering an ambitious expansion phase and is looking to hire a Senior Software Engineer to play a key role in its next stage of growth. This is an opportunity to work on mission-critical, real-time systems used at scale, with genuine ownership across architecture, development, and delivery. The role is hands-on, commercially focused, and suited to someone who enjoys solving complex technical problems in a fast-moving environment. What you'll be working on Building and evolving high-performance, real-time platforms that process and deliver live data Developing production-grade systems end-to-end, from requirements and design through to deployment and support Working across modern backend and frontend technologies, contributing to system architecture and scalability Collaborating closely with product and commercial stakeholders to deliver features that matter Supporting live systems, including participation in an out-of-hours support rota Tech environment You'll be working in a modern, cloud-based stack that includes: Backend & Frontend: Python, TypeScript, Golang, Node.js, JavaScript, React Data: PostgreSQL and NoSQL databases Cloud & DevOps: AWS, CI/CD pipelines, Terraform (desirable) Tooling: GitHub, Slack, Trello, Notion Experience with real-time systems (such as betting, trading, finance, or high-throughput data platforms) is highly advantageous, as is any exposure to data science, machine learning, or wearable/sensor technologies. What they're looking for 5+ years' experience in commercial software development Strong system design skills and the ability to work within a wider architecture A delivery-focused mindset with high standards for quality and reliability Comfortable working in both project delivery and live support environments Able to communicate complex ideas clearly to technical and non-technical audiences Self-motivated, adaptable, and confident taking ownership The setup Hybrid role with 2-3 days per week onsite in a Central London office Full-time, permanent position Competitive salary £75k-£85k, depending on experience 25 days holiday, contributory pension, and the chance to grow with a scaling business If you're a senior engineer who enjoys real-world impact, technical depth, and ownership, this is a role worth exploring. Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website. TPBN1\_UKTJ

Principal Software Engineer - (Frontend & Mobile)
Hargreaves Lansdown
City of London
Hybrid
Senior
Private salary
RECENTLY POSTED

Principal Software Engineer (Solutions Architect)

About HL And The Opportunity

We’re building the next generation platform for one of the UK’s largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets.

This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will contribute in building in our next generation Unified Client Experience (UCX) frontend platforms that will streamline client journeys across a range of products and services, in both web and mobile domains.

It’s an opportunity to design, architect and build a modern web and mobile applications using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation, transforming client journeys and delivering on HL’s vision to give people financial freedom. You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment.

By joining us, you’ll help deliver innovative and scalable solutions that make investing easier and more accessible to millions of users across the UK.

Be part of HL’s future. Be part of the future of investing. Shape it with us.

What You’ll Be Doing

Set technical direction: Define & maintain Front-End/Web and mobile software architecture and patterns, engineering standards and the ‘right way’ to build greenfield HL state of the art web and mobile applications.

Own a technical ‘opinionated’ architecture for front end and mobile applications: shape application designs, rail guards and make trade-offs and prevent regret spend.

Define scalable and reusable UI component-based architecture, state management, routing/navigation, error handling, data fetching and modularization strategy.

Design, publish and own engineering standards including coding standards, CI/CD strategy, deployment blueprint, testing automation strategy, observability design and security baseline.

Design Integration strategies for HL web and mobile apps with existing and new systems to deliver a seamless client experience across a range of products and services.

Tackle high-impact problems: performance bottlenecks, reliability issues, scaling limits, complex integration, tech debt hotspots.

Lead through influence: Align stakeholders, run design reviews, drive decisions, own technical governance and unblock delivery teams.

Mentor and level-up others: Coach senior/leads and set strong bar for engineering excellence.

R&D: Stay at the forefront of the React/React Native ecosystem, evaluating new technologies, industry practises and guide the engineering delivery teams with adoption.

About You

10+ years of experience with Web / Front End & Mobile software engineering and at least 4+ years in a Principal Engineering or Solution Architect role or similar

Deep understanding of Front End / Web and Mobile architecture approaches and design patterns including micro front ends, module federation, stateless, SPA and others

Advanced knowledge of React and React Native Eco system and AWS technology stack.

Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns

Well versed in latest CI/CD practises and tools, deployment methodologies and experienced in tools to enforce quality standards.

Mastery of Webpack/Metro configurations, Babel and TypeScript

Expertise in complex state management and understanding the nuances between DOM based and Native based styling/layouts.

Demonstrated ability to create clear and well written documentation for architecture, design patterns, rail guards and lead design governance.

Strong communication and articulation skills, capable of independently navigating an organization and able to negotiate and lead discussions across various levels and departments to develop consensus.

Interview Process

3 Stage Interview

Stage 1 - Discussion with our Hiring Manager (30mins):

A chance to talk with our Hiring Manager in more detail about the role, our tech stack and some of the problems we solve every day. Here, we’ll dig a bit more into some of your experiences, understand the processes you’re familiar with and the technologies you’ve used to deliver end user value.

Stage 2 - Technical (70mins):

For the technical part, we’d like you to sit down with some of your potential peers to work through a technical solution or a coding problem. We’ll be looking together at where a sample piece of technology / code has issues and how we might address them.

Stage 3 - Culture Fit (30mins):

In our Cultural Fit interview, we’ll be looking to learn more about your past experiences, what keeps you motivated, where we may be able to help you improve further, key decisions you’ve helped to make and issues you’ve resolved.

Salary & Package

We offer a competitive salary, depending on experience, alongside a generous performance-based bonus scheme .

Your total reward package includes:

?? Up to 19% pension contribution - helping you plan confidently for the future

?? Private medical insurance - giving you peace of mind and access to top-tier healthcare

?? A wide range of excellent benefits , from lifestyle perks to wellbeing support, designed to help you thrive both in and out of work

We believe in recognising and rewarding the impact you make - and ensuring you feel valued every step of the way.

Working Schedule

We’re based in the stunning Paddington Central offices at 4 Kingdom Street , a modern workspace designed to energise your day and elevate collaboration.

What Makes It Special?

?? Landscaped rooftop gardens - perfect for a breath of fresh air or informal catch-ups.

?? London’s highest rooftop basketball court - yes, really!

??? Wellness amenities including showers, lockers, hairdryers, and fresh towels.

?? Cyclist-friendly with secure bike storage and drying rooms.

??? Stylish lounge areas, booths, and breakout spaces for focused work or relaxed chats.

?? Canalside location near Little Venice, with floating restaurants, coffee shops, and a seasonal pop-up garden bar.

?? Unbeatable transport links - just steps from Paddington Station and the Elizabeth Line.

We embrace a hybrid working model that gives you the best of both worlds:

1-2 days a week in the office to connect, collaborate, and enjoy everything the space has to offer.

Remote flexibility for deep focus, work-life balance, and personal productivity.

This is a full-time role , working 37.5 hours per week , Monday to Friday.

Please note, we do not offer sponsorship opportunities for this role.

TPBN1_UKTJ

Frontend Developer
TXP
London
Hybrid
Junior - Mid
£575/day
RECENTLY POSTED

Front-end Developer (Public Sector)

6 Month Contract - £575/day Inside IR35

Role Details

* Location: London, Bristol, or Manchester (flexible, most team in London) - minimum 2
days/week onsite at base
* Duration: 6 months | Rate: £575/day inside IR35
* Clearance: Active SC preferred (BPSS with SC eligibility minimum accepted)

Required experience:

* Owned frontend deliverables:
* Minimum 2 years: Frontend development experience
* Ruby and Python: Familiarity required, Python preference
* User-centered design focus: Essential approach

Collaboration & Working Style

* Team working: Comfortable collaborating with colleagues
* Independent & proactive: Able to hit ground running within first few weeks (support provided)
* Enthusiasm for learning: Eager to try new things
* Work with back-end developers and designers: Primary collaboration

Accessibility & Design

* WCAG: Knowledge of Web Content Accessibility Guidelines
* Figma experience: Prototyping software experience
* GDS Standards: Knowledge of GDS design systems desirable

Junior Software Developer
Ripple
London
Hybrid
Junior
£40,000 - £45,000
RECENTLY POSTED
+3

A high-growth, award-winning specialist lender is seeking a Junior Software Developer to help build and implement a highly automated, bespoke lending platform. Having featured on the Financial Times 1000 fastest-growing companies in Europe for two consecutive years, this firm is now looking to transform its operating efficiency and scalability through in-house technology.

Location: London

Hybrid: 4 days on-site, 1 day remote

Salary: £40,000 to £45,0000

This is a frontend-focused role with some backend requirements. You will join a small, agile team and work directly with the company’s co-founders, playing a fundamental role in the evolution of their technology stack.

Responsibilities

* Build and maintain modern web applications using React and Next.js.

* Develop clean, intuitive user interfaces with a strong focus on UI design and usability.

* Integrate frontend components with RESTful APIs and backend services.

* Work with Node.js and related development tools to support the full application lifecycle.

* Collaborate on CI/CD pipelines and ensure high-quality code through testing and TDD practices.

* Assist in the transition towards highly automated, data-driven lending processes.

Requirements

* Proficiency in TypeScript and JavaScript.

* Strong experience with React and Next.js.

* Experience using Node.js.

* Proven ability in UI development and CSS styling libraries.

* Working knowledge of RESTful APIs and frontend-backend integration.

* Exposure to cloud platforms (Azure, AWS, or GCP).

* Understanding of CI/CD pipelines and testing practices (TDD).

Desirable Skills

* Python and FastAPI for backend development.

* Experience with AI-assisted development tools and AI agents.

* Awareness of Model Context Protocol.

* Experience working with Figma or collaborating from design files.

This role is ideal for a motivated and disciplined developer, whether self-taught, formally educated, or professionally experienced, who wants to see their code have a direct impact on a company’s growth and operational success.

Ripple Recruitment is acting as an employment agency for this vacancy. My client is an equal opportunity employer committed to fostering a diverse and inclusive workplace. Due to high volumes of interest, we can only respond to shortlisted applicants

Front End Developer
The Engage Partnership
London
Hybrid
Mid - Senior
£55,000 - £65,000
RECENTLY POSTED

Front End Software Developer - Central London - React, Typescript and Tailwind CSS

We are a fantastic, award winning start-up company in central London looking to hire an ambitious, talented and passionate Front End Developer to join our growing team and focus on React, Typescript and Tailwind CSS

Working in a fast paced development environment, one day a week onsite in central London and the rest remote.

Responsibilities

  • Hands on Front End Development across React, Typescript, Tailwind CSS
  • Build scalable, quality product front ends for customers
  • Work collaboratively with backend development and product design teams to create something amazing

Qualifications

  • Proven experience working in fast paced, ambitious start-up environments is essential
  • React, Typescript, Tailwind CSS experience
  • Agile development methodologies
  • Experience building scalable, well tested software solutions
  • Passionate developer who loves coding, thrives in a challenging collaborative team environment and keen build amazing products focussing on front end development
  • Full rights to work in the UK (unfortunately we cannot sponsor) and able to be in London office 1 day a week min

Remuneration

  • 55-65k base salary depending on experience
  • Learning and Development Budget for personal growth

APPLY TODAY and be a part of something amazing

Senior C# Software Engineer
Spectrum IT Recruitment
London
Hybrid
Senior
£80,000 - £100,000
RECENTLY POSTED

Senior Developer Senior Software Engineer

  • C#, .Net, Typescript, JavaScript
  • Hybrid, 1-2 days near Liverpool Street
  • Salary, 85,000 to 95,000 + benefits

If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters, please read on.

We’re hiring for a growing, well-funded SaaS business building a sophisticated, data-driven platform that helps organisations understand and manage complex information at scale. The company is in an early investment phase with strong growth ambitions, offering real scope for progression and the chance to help shape both the product and engineering direction. You’ll be part of a bright, collaborative team of talented software engineers and academically strong problem-solvers who value clean design and thoughtful architecture.

The Role
As a Full Stack Engineer, you’ll design and deliver features across a modern stack, working on scalable backend services and intuitive front-end applications that present complex data clearly.

Key Responsibilities:

  • Building full-stack features using C#, .NET and TypeScript/React
  • Developing scalable backend services for complex data workflows
  • Creating responsive, user-friendly interfaces
  • Exploring new technologies and contributing to technical improvements
  • Working collaboratively in an agile engineering environment

Essential Skills & Experience

  • Strong commercial experience as a Software Developer or Full Stack Engineer
  • 5+ years experience with C# / .NET and modern JavaScript or Typescript (React preferred)
  • Strong problem-solving ability and a collaborative mindset
  • A Bachelor’s degree in Computer Science or Software Engineering. 2.1 or above

Why Join?

  • Technically challenging, data-driven SaaS product
  • Strong investment for growth
  • Work alongside a highly capable and intellectually strong team
  • Excellent learning opportunities and clear progression as the company grows

If you’re looking for a role where you can learn quickly, tackle interesting technical challenges, and grow with an ambitious product business, hit apply !

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

Junior Software Developer
Ripple
London
Hybrid
Junior
£40,000 - £45,000
RECENTLY POSTED

A high-growth, award-winning specialist lender is seeking a Junior Software Developer to help build and implement a highly automated, bespoke lending platform. Having featured on the Financial Times 1000 fastest-growing companies in Europe for two consecutive years, this firm is now looking to transform its operating efficiency and scalability through in-house technology.

Location: London
Hybrid: 4 days on-site, 1 day remote
Salary: £40,000 to £45,0000

This is a frontend-focused role with some backend requirements. You will join a small, agile team and work directly with the company s co-founders, playing a fundamental role in the evolution of their technology stack.

Responsibilities

  • Build and maintain modern web applications using React and Next.js.
  • Develop clean, intuitive user interfaces with a strong focus on UI design and usability.
  • Integrate frontend components with RESTful APIs and backend services.
  • Work with Node.js and related development tools to support the full application lifecycle.
  • Collaborate on CI/CD pipelines and ensure high-quality code through testing and TDD practices.
  • Assist in the transition towards highly automated, data-driven lending processes.

Requirements

  • Proficiency in TypeScript and JavaScript.
  • Strong experience with React and Next.js.
  • Experience using Node.js.
  • Proven ability in UI development and CSS styling libraries.
  • Working knowledge of RESTful APIs and frontend-backend integration.
  • Exposure to cloud platforms (Azure, AWS, or GCP).
  • Understanding of CI/CD pipelines and testing practices (TDD).

Desirable Skills

  • Python and FastAPI for backend development.
  • Experience with AI-assisted development tools and AI agents.
  • Awareness of Model Context Protocol.
  • Experience working with Figma or collaborating from design files.

This role is ideal for a motivated and disciplined developer, whether self-taught, formally educated, or professionally experienced, who wants to see their code have a direct impact on a company s growth and operational success.

Ripple Recruitment is acting as an employment agency for this vacancy. My client is an equal opportunity employer committed to fostering a diverse and inclusive workplace. Due to high volumes of interest, we can only respond to shortlisted applicants.

Senior Android Developer
Adecco
London
Hybrid
Senior
£85,000
RECENTLY POSTED

Location: Soho, London (Hybrid)
Salary: Up to £85,000 DoE
Permanent role

Ready to build Android apps used by millions? Want to work in a modern engineering culture that values clean code, collaboration, experimentation, and real autonomy?

If you enjoy solving meaningful problems, shipping high-quality mobile experiences, and working alongside people who genuinely care about craft and culture - you’ll love it here.

Why this role stands out

  • A team with personality - open-minded, diverse, inclusive, and genuinely enjoyable to work with.
  • A product environment where engineers, designers, and product managers collaborate as equals.
  • A culture where every voice matters and ideas flow freely, no matter your job title.
  • A chance to work on high-traffic consumer apps that make a real difference in people’s everyday lives.

The role

My client is looking for a Senior Android Developer to join our Mobile Collective, helping shape and evolve apps used across millions of UK households. You’ll work in full-stack, multi-disciplinary squads that take ownership end-to-end - design, build, deploy, observe, iterate.

They are an AI-enabled engineering organisation, using tools like GitHub Copilot and ChatGPT to accelerate delivery and raise code quality. If you’re excited about blending great engineering with smart AI tooling, this is a place to thrive.

What you’ll be doing

  • Leading feature delivery and contributing to technical strategy.
  • Collaborating closely with designers and product managers to ship beautiful, intuitive Android experiences.
  • Writing clean, maintainable Kotlin using Jetpack Compose as a first-class citizen.
  • Championing engineering best practice - pairing, mobbing, TDD, continuous delivery.
  • Designing secure, scalable solutions with performance in mind.
  • Debugging and optimising apps used at serious scale.
  • Staying curious, experimenting, and bringing modern Android thinking into the team.
  • Mentoring and supporting fellow engineers to level up together.

What we’re looking for

  • Strong experience building Android apps with Kotlin and Jetpack Compose.
  • Excellent understanding of modern app architecture and design patterns.
  • Passion for agile delivery and releasing value early and often.
  • Experience with Espresso for testing and Git for version control.
  • Comfortable using AI coding assistants to accelerate development.
  • A collaborative mindset and a desire to constantly learn and improve.

What you’ll get

  • Hybrid working - 2 days in the office, the rest wherever you work best.
  • Dedicated learning time, LinkedIn Learning licence, and regular conference opportunities.
  • Hack days, engineering communities, socials, and an annual Product & Tech meetup.
  • Clear progression framework and opportunities to explore other teams or tech areas.

Adecco is a disability-confident employer. It is important to us that we run an inclusive and accessible recruitment process to support candidates of all backgrounds and all abilities to apply. Adecco is committed to building a supportive environment for you to explore the next steps in your career. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.

Abstract designer - Contract
IT Human Resources
London
Fully remote
Mid - Senior
Private salary
RECENTLY POSTED

I am seeking a Designer/Developer with strong expertise in GoAbstract to support upcoming digital projects. The role focuses on optimizing design-development collaboration, version control management, and structured UI/UX workflows.

The contractor will work closely with product, design, and engineering teams to manage and streamline Abstract environments and ensure consistency across projects.

Key Responsibilities

  • Set up and manage projects within GoAbstract
  • Maintain version control, branches, and collaborative workflows
  • Ensure alignment between design and development teams
  • Maintain and support design systems
  • Implement and enforce best practices for version management
  • Contribute to improving UI/UX processes
  • Collaborate with distributed (remote) teams
  • Document workflows and established standards

Profile

  • Proven experience in digital design and/or Front End development
  • Strong hands-on experience with GoAbstract
  • Solid understanding of design systems and component management
  • Experience working in remote collaborative environments
  • Ability to structure and optimize workflows

Technical Skills

  • Advanced proficiency in GoAbstract (version control, branching, collaboration)
  • Experience with design tools (Sketch, Figma, or similar)
  • Strong understanding of UI/UX principles
  • Front End development knowledge (HTML, CSS, JavaScript preferred)
  • Experience managing design systems

Soft Skills

  • Autonomous and self-driven
  • Detail-oriented and organized
  • Strong collaboration skills
  • Effective remote communication
  • Structured and process-oriented mindset

Experience Required

  • Minimum 3 years of experience in digital design, Front End development, or hybrid roles
  • Prior experience using Abstract in production environments strongly preferred
  • Previous freelance or contract experience is a plus

Terms

  • Contract-based mission
  • Fully remote
  • Duration and workload to be defined
  • Compensation based on experience and profile

This role is ideal for a hybrid designer/developer who can bridge the gap between design and engineering while ensuring structured collaboration through GoAbstract.

Senior iOS Developer
Adecco
London
Hybrid
Senior
£80,000
RECENTLY POSTED
+1

Location: London (Hybrid)
Salary: Up to £80,000 DoE
Permanent role

Why Apply?

This organisation helps millions of people make smarter financial decisions through well loved consumer apps used across the UK. The engineering culture is creative, collaborative and ambitious, giving developers the space to experiment, learn and deliver meaningful products that genuinely help people. Engineers end each day knowing they have made a real impact on both users and their team.

What makes this environment different

A workplace full of personality that values openness, diversity and inclusion.
Teams that enjoy solving complex problems together and take pride in delivering world class experiences.
A culture where everyone belongs, every idea is welcomed and every voice matters.

About the role

A Senior iOS Developer is needed to join a Mobile Collective responsible for evolving high traffic consumer apps. They will work in full stack, multi disciplinary squads alongside product managers, designers and fellow engineers. The role covers the full software development lifecycle including designing features, building them, testing them, deploying them and maintaining them in production.
The engineering organisation embraces AI, using tools such as GitHub Copilot and ChatGPT to speed up delivery and improve code quality. Someone excited about integrating AI into their workflow will thrive here.

What you will do

Lead feature delivery and contribute to the technical direction of the team
Collaborate closely with product and design teams to deliver polished, intuitive user experiences
Write clean, maintainable Swift using SwiftUI and UIKit
Apply strong knowledge of async await and Combine
Champion engineering best practice including test driven development, pairing, mob programming and continuous delivery
Consider security from the very beginning of feature development
Debug, optimise and maintain a high performing codebase
Stay up to date with modern iOS trends and bring innovative ideas forward
Support and mentor other engineers to help them grow

What the team is looking for

Proven experience building iOS applications with Swift, SwiftUI and UIKit
Strong understanding of async await and Combine
A solid grasp of mobile architecture and common design patterns
A passion for agile delivery and shipping value early and often
Experience with XCUI testing and Git version control
Comfort working with AI coding assistants to enhance productivity
A collaborative mindset and enthusiasm for continuous learning
Familiarity with Android or cross platform development is a bonus but not essential

What this role offers

Hybrid working with two days each week in the office and the rest worked flexibly
Dedicated learning time, a LinkedIn Learning licence and regular opportunities to attend conferences
A strong community culture featuring hack days, team socials and an annual product and technology meetup
A clear progression framework with opportunities to move across teams and explore new challenges

Adecco is a disability-confident employer. It is important to us that we run an inclusive and accessible recruitment process to support candidates of all backgrounds and all abilities to apply. Adecco is committed to building a supportive environment for you to explore the next steps in your career. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you

Senior Front End Developer
Ithika Recruitment Ltd
London
Hybrid
Senior
£85,000 - £90,000
RECENTLY POSTED

Senior JavaScript Engineer / JavaScript Engineer (Next.JS/React) Frontend Developer with curiosity for the whole stack London (Hybrid, Farringdon Tues/Weds/Thurs) £85k-90k + Bonus + Benefits Discretionary bonus (10%), Private Healthcare, 25 Days holiday, 5% pension, Life Insurance, two Volunteering days a year, Season Ticket Loan Do you love solving complex problems and building products real people rely on every day? This established company has spent 25 years helping tell some of the world's most iconic stories. With a team of 140 and a deep commitment to quality, they're looking for a Senior Frontend Developer to craft sophisticated client experiences within the music world. You're a thoughtful, solutions-driven engineer who cares about architecture, performance, scalability and long-term product impact. You don't just close tickets, you take ownership, think systemically and value clean, usable, maintainable code. Collaboration is second nature to you. You enjoy pairing, knowledge sharing and healthy technical debate. You're curious about tooling, infrastructure and already exploring how AI can enhance your workflow. The Role You'll join a small, cross-functional team spanning product, design, research, engineering and operations. It's a flat structure built on shared ownership and trust, with real influence over not just how things are built, but what gets built. People around you will push you to be your best and they love getting out for lunch together! The roadmap focuses on meaningful workflow challenges, including: Intelligent search and discovery experiences Seamless, responsive user journeys Simplifying complex processes Ensuring performance and reliability at scale With a front-end focus, you'll work across the product and stack, with scope to deepen your knowledge of infrastructure and tooling. Tech Stack TypeScript / JavaScript React, Next.js Vercel, AWS Serverless (Lambda, API Gateway) SQL Server, Algolia TeamCity (CI/CD) What You'll Find: A thoughtful, craft-led engineering culture Time to make sound architectural decisions Close collaboration with product and design Genuine ownership and accountability A stable, commercially established business This isn't "move fast and break things." It's about building well, sustainably and responsibly, while working on complex, interesting problems. If you're motivated by craft over hype and want to build reliable, well-designed tools at the heart of how people work, apply now or contact Simon Morris at Ithika Recruitment for a detailed discussion. Ithika Recruitment, partnering world-class talent with world-class companies.

Senior Software Developer
Reed
London
Hybrid
Senior
£110,000 - £120,000
RECENTLY POSTED
  • Location: London - 3 days a week onsite
  • Job Type: Full-time
  • Salary: Competitive - up to £120k base + benefits

A new exciting permanent, Vice President level, Senior Software Developer to join an exciting growing GIT - CMI - Risk FX IT department with a global leading investment bank.This senior software development position requires a candidate with outstanding skills in C# and TypeScript/React, and a robust understanding of pricing models and risk analytics for both vanilla and exotic FX derivatives. The role involves close collaboration with business analysts, traders, and software engineers to ensure seamless integration into real-time trading platforms.

Day-to-day of the role:

  • Design and implement pricing and risk analytics tools for FX cash trades and options, including exotic and structured products.
  • Integrate and support the optimization of quantitative models in collaboration with quants and traders.
  • Maintain and enhance low-latency infrastructure for real-time risk and PnL calculations.
  • Conduct back testing and performance analysis of models and trading strategies.
  • Provide technical guidance and support across the trading floor on model behaviour and system performance.
  • Liaise with technology and infrastructure teams to ensure robust deployment and monitoring of analytic tools.
  • Enhance the FX Options Risk Viewer UI in collaboration with traders and other IT team members.
  • Contribute to the continuous improvement of coding standards, testing frameworks, and development practices.

Required Skills & Qualifications:

  • A degree in an IT-related subject with substantial experience in software development.
  • Highly experienced in C#, TypeScript/React, and Quant Library integration.
  • Solid understanding of mathematics as applied to derivatives risk and pricing.
  • Excellent written and verbal communication skills in English.
  • Experience working with traders, quants, and risk managers in an investment-banking environment.
  • Front office trading, pricing in FX within a bank, investment management environment would be desired

Benefits:

  • Competitive salary and benefits package.
  • Opportunities for professional growth and development.
  • Dynamic and collaborative working environment.

Legal and Regulatory Responsibilities:

  • Comply with all applicable legal, regulatory, and internal Compliance requirements.
  • Maintain appropriate knowledge to ensure full qualification for the role.
  • Complete all mandatory training as required to attain and maintain competence.

How to apply:

To apply for this Senior Software Developer position, please submit your CV to be considered immediately.

Front End Developer - Active SC
Hays Specialist Recruitment Limited
London
Remote or hybrid
Mid - Senior
£500/day - £550/day
RECENTLY POSTED
+5

Up to £550 per day - Inside IR35

London / Remote

6 months

My client is an instantly recognisable consultancy who require Front End Developers with Active SC Clearance to join a business-critical programme for an end client within the Public Sector.

Key Requirements:

  • Proven commercial experience working as a Front-End Developer within the Public Sector.
  • Active SC Clearance.
  • NPPV3 Clearance eligibility.
  • Hands-on React and TypeScript experience across large microservice architectures.
  • Proficiency in test-driven development (e.g., JUnit, Mockito) and building robust, well-tested applications.
  • Skilled in containerisation with Docker and relational databases such as Postgres (Liquibase exposure beneficial).
  • Experienced with CI/CD pipelines and modern DevOps practices (e.g., Jenkins or similar tooling).
  • Familiarity with Swagger/OpenAPI, Gradle, Liquibase, Kafka, Java (Spring Boot).
  • Comfortable working in Agile environments and collaborating across multidisciplinary teams.
  • Excellent communication skills.

Nice to have:

  • Active NPPV3 Clearance.
  • Immediate availability.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C’s, Privacy Policy and Disclaimers which can be found at hays.co.uk

Page 1 of 3
Frequently asked questions
Haystack features a wide range of Frontend Engineer roles in London, including positions in startups, scale-ups, and established tech companies. Jobs range from junior to senior levels and often require skills in React, Angular, Vue.js, HTML, CSS, and JavaScript.
While many job listings specify preferred frameworks like React, Angular, or Vue.js, requirements vary by role. Some positions welcome candidates with a strong grasp of core frontend technologies and a willingness to learn new frameworks on the job.
Yes, Haystack includes diverse job listings, including fully remote, hybrid, and on-site Frontend Engineer positions based in London. You can filter your job search to find roles that match your preferred working arrangement.
New Frontend Engineer opportunities in London are added regularly, often daily. We recommend checking back frequently or setting up job alerts to stay updated on the latest openings.
Haystack offers resources such as resume tips, interview preparation guides, and personalized job alerts. Our platform also facilitates direct applications to employers, making it easier to connect with hiring teams.