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React Jobs in London

Overview

Looking for React jobs in London? Explore the latest React developer roles in one of the UK’s top tech hubs. Whether you’re a junior or senior React engineer, Haystack offers exclusive access to London-based opportunities with leading employers. Start your React career in London today and connect with exciting frontend and full-stack positions tailored to your skills.
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C# Developer
FDM Group
London
Fully remote
Mid
£55k - £75k
RECENTLY POSTED
csharp
react
dot-net
asp-net
javascript
jira
+4
FDM is a global business and technology consultancy seeking a C# Developer to work for our client within the advisory and consultancy sector. This is initially an 8-month contract with the potential to extend and will be a remote role with occasional trips to London.
Our client is looking for a C# Developer who would be working on a range of projects, both idea and concept experimentation as well as product MVP development. You will be providing expertise in Software Development best practice, in line with the organisation’s standards and processes, as well as being an active developer-participant.
The ideal candidate will be expected to have significant experience of .NET and will work under the technical steer of a Senior Developer. Preferably, you will have Full stack experience, with React for front end work, and have exposure to GenAI/Agentic AI as well as LLMs.
Responsibilities
Work collaboratively using the Agile methodology to deliver software products while validating user stories and acceptance criteria
Create quantifiable estimates while actively participating in workshops, design sessions
Plan poker estimation sessions, as well as Agile ceremonies, such as daily stand-ups, sprint planning, reviews and retrospectives
Work closely with Innovation Managers, Digital Product Delivery Lead and the Digital Product Management team, to ensure a successful design, development, test as well as delivery of the software product
Ensure Development, AI and Digital Product Delivery adhere to best practices, agreed standards, policies and procedures, as well as governance and compliance are adhered to
Adopt a continuous learning and improvement mentality, promoting an innovative culture, staying up to date with trends
Build and maintain early-stage product ideas/concepts using C# and .NET
Contribute to full stack development using React for front end work while integrating AI driven features
Requirements
Minimum of 5 years’ experience as a C# Developer with proficiency in Python, .NET framework and C# as well as experience with ML.NET, ASP.NET, MVC, Web API Containers (Docker/Kubernetes), Machine Learning Operations (MLOps) and CI/CD
Good knowledge of IT industry trends (especially GenAI and AgenticAI), suppliers, platforms and products
Post productions MLOps, Model retaining and Drift monitoring in Azure with knowledge of Microsoft Azure
Strong understanding of object-oriented programming and familiarity with front-end technologies like HTML, CSS, React and JavaScript, JSON
Strong command of SQL for database management, query optimisation and No SQL databases
Experience in Python Programming and data visualisation using PowerBI or similar tools
Exposure to applying ML algorithms, libraries or frameworks and build models to predict outcomes and automate processes
Significant experience working within an Agile software development and delivery process. Comfortable participating in backlog estimation, planning poker or sprint planning sessions.
Knowledge of working with a product backlog with Microsoft ADO, Jira or equivalent. Familiarity with MoSCoW prioritisation and software development estimating principles and process.
Strong problem management skills with the ability to navigate complexity, analyse alternative approaches using advanced analytical and interpersonal skills
Ability to have strong focus, make data-driven decisions, be innovative with critical thinking skills and solid attention to detail
Excellent written and verbal communication skills, presenting to an audience in both formal and informal situations, confident and respectful of the organisation’s values, with demonstrable skills in influencing and negotiation
Desirable
Knowledge of CrewAI, UiPath, Semantic Kernel, Co-Pilot, GPT-models
Why join us
Career coaching, mentoring and access to upskilling throughout your entire FDM career
Assignments with global companies and opportunities to work abroad
Opportunity to re-skill and up-skill into new areas, develop non-linear career paths and build a skillset within your field
Annual leave and work-place pension
About FDM
We are a business and technology consultancy and one of the UK’s leading employers, recruiting the brightest talent to become the innovators of tomorrow. We have centres across Europe, North America and Asia-Pacific, and a global workforce of over 2,500 employees. FDM has shown exponential growth throughout the years, firmly establishing itself as an award-winning employer and is listed on the FTSE4Good Index.
Diversity and Inclusion
FDM Group is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, national origin, age, disability, veteran status or any other status protected by federal, provincial or local laws.
Lead R Engineer / Data Scientist - Integrated Pest Management IPM
MORRIS SINCLAIR RECRUITMENT LTD
London
Fully remote
Leader
£70k - £120k
RECENTLY POSTED
r
linux
react
windows
dot-net
javascript
+5
Fully Remote
Very Competitive Salary and Share Scheme
Agricultural Technology specialising in Integrated Pest Management (IPM)
Remote Role - Central London Office This is a fully remote role but you MUST be UK based and not require a visa to work. Lead R Data Science Engineer - Integrated Pest Management (IPM) Research & Solutions The Organisation Our client develops cutting-edge navigator software for the global agricultural sector, helping farmers transition toward more sustainable practices through science-backed analytics. Their software provides direct access to advanced sustainability models and insights. Their Sustainability division consists of specialised Research Software Engineers who transform scientific findings into practical models for farmers and land managers, enabling them to understand their systems better and build more sustainable, profitable operations. Position Overview We’re seeking an experienced Data Engineer to join our client’s Sustainability team as a lead technical specialist in our R-focused Research Software Engineering group to specialise particularly in Integrated Pest Management. You’ll create and maintain the technical infrastructure that enables our sustainability experts and data scientists to develop innovative agricultural sustainability solutions to solve global issues in Integrated Pest Management (IPM). Core Functions
Lead technical best practices across R package design, code architecture, documentation, and dependency management
Establish and oversee versioning and CI/CD systems to enhance team workflows
Guide team members in code architecture, development standards, and deployment processes
Serve as the technical authority for computationally demanding tasks, especially spatial analytics and GIS-based product development
Implement scientific research findings around Integrated Pest Management (IPM) into production-ready code
Collaborate with our Engineering department to align code design, versioning strategies, and release cycles
Essential Qualifications
Master’s degree and / or PhD or equivalent in informatics or life sciences (or bachelor’s degree with 5+ years relevant industry experience)
Deep knowledge of R programming and package development
Proven experience managing dependencies and ensuring reproducibility in R production environments
Strong background in version control systems and CI/CD implementation
History of successful collaboration with IT teams on data science workflows
Proficiency with Windows and/or Linux environments
Experience with GIS systems and spatial data analysis
Exceptional problem-solving abilities and adaptability
Leadership experience with strong communication skills
Structured approach to quantitative challenges
Comfort working in a dynamic startup environment
Qualifications
Microsoft Azure experience, particularly R integration
Application containerization knowledge (Docker, etc.)
Familiarity with Python, JavaScript, C++, bash, or other languages
Web application development experience (React, .NET)
Background in data security and IP protection workflows
Knowledge of environmental sustainability concepts (carbon footprinting, lifecycle analysis, environmental modeling)
Experience in agricultural or land management sectors with a background specifically in Integrated Pest Management (IPM)
If you are based in the UK and meet the criteria listed then apply now! The Morris Sinclair team will give you a call.
Junior Python Developer
Oscar Technology
London
Hybrid
Junior
£40k - £45k
RECENTLY POSTED
python
react
processing-js
postgresql
typescript
kafka
+2
Junior Software Engineer £35-45k Hybrid (UK)
A growing data and tech start-up in the transport sector is looking for a Junior Software Engineer with 1-2 years of commercial experience to join their small, fast-moving team.
You’ll be building data-driven solutions that solve real-world infrastructure challenges, working across the full stack and contributing to both backend systems and user-facing apps. This team is currently made up of 9 employees in a start-up company. It is a hybrid role with 3 days per week on-site in Central London.
Key Tech Stack:
Python for data processing and backend logic
SQL (PostgreSQL / SQL Server) for data querying and pipelines
React (TypeScript) for intuitive, modern UIs
Exposure to cloud platforms (AWS/Azure), Docker, or streaming tools (Kafka, Spark, etc.) is a plus
Ideal Profile:
1-2 years’ experience in a commercial software or data engineering role
Strong coding skills in Python, SQL, and React
Keen to work closely with clients and solve meaningful, complex problems
A self-starter comfortable in a start-up environment
Package & Perks:
£35,000-£45,000 base + discretionary bonus
28 days holiday + pension
Cycle to work scheme
Tailored training and development support
If you are interested, please give me an email at
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.
Senior Engineer - AWS
Robert Walters
London
In office
Senior
£80k - £90k
RECENTLY POSTED
aws
react
github
git
javascript
spring-boot
+9
As part of an engineering team, you’ll use your software engineering skills and experience to build features, resolve issues, and address technical debt. You’ll also bring a strategic lens to team processes and tooling, helping improve how the team operates and ultimately delivering valuable, high-quality software to customers.
What you’ll be doing
Build clean, maintainable features and resolve end-to-end issues, ensuring solutions are fit for purpose, add business value, and meet quality standards.
Contribute to strategies for managing technical debt, ensuring systems are secure, resilient, and reliable.
Define and analyse test approaches to deliver the best possible customer experience, with a focus on security, usability, and accessibility.
Conduct and participate in code reviews, considering functional and non-functional requirements such as performance, resiliency, maintainability, and security.
Promote continuous improvement in team effectiveness and culture, supporting changes that enhance productivity and happiness.
Build a collaborative environment, coaching and mentoring less experienced engineers.
Research emerging application technologies, identify opportunities to apply them, and share learnings across the team.
Ensure all customers and stakeholders are treated fairly and with respect.
What we’re looking for
Technology-focused degree preferred, or equivalent demonstrable experience.
Extensive knowledge of:
JavaScript, TypeScript, NodeJS, AWS SDK & CDK, Python, React, HTML/CSS, Java, Spring, Terraform/CloudFormation
Hands-on experience:
Building serverless applications in AWS
Building microservices in Java (Spring Boot)
Strong understanding of clean code principles, design patterns, distributed systems, software testing, CI/CD, and Agile methodologies (Scrum/Kanban).
Knowledge of application security.
Additional desirable skills:
SQL, GraphQL, Maven
Frontend performance optimisation
API security and secure coding best practices
Git release strategies
Nice to have: Postgres, DynamoDB, Kubernetes, GitHub Actions, Feign, Quarkus.
Proven track record in:
Delivering well-optimised and maintainable software features
Analysing and solving complex technical problems
Participating in effective code reviews with actionable feedback
Technical leadership, mentoring, and influencing team strategy
Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates
Senior Full Stack Developer JavaScript Python API
Client Server Ltd.
London
Hybrid
Senior
£85k - £100k
RECENTLY POSTED
javascript
python
react
typescript
vue.js
nodejs
+2
Senior Full Stack Developer / Engineer (JavaScript Python API) London to £100k
Opportunity to progress your career in a senior, hands-on Senior Full Stack Developer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has been established 10 years, with recent funding of £125 million.
You’ll be working on complex and interesting systems and can enjoy a range of benefits and perks.
As a Senior Full Stack Developer you’ll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You’ll work across the full tech stack using JavaScript and Vue.js on the front end, there’s a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you’ll be encouraged to explore new technologies and use the best tool for the job as well as own your own DevOps and deployment.
There’s an emphasis on getting stuff done and immediate business impact, alongside longer term strategy.
Location / WFH:
There’s a hybrid work from home model with three days a week in the Hammersmith office and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast.
About you:
You have strong full stack JavaScript development skills and are happy to work on projects that could be weighted either way or a 50/50 split
You have experience with JavaScript frameworks they use Vue.js but Angular or React experience is fine, you will also have experience with Python, Node.js and TypeScript
You’re product focussed with good business acumen
You have a good knowledge of APIs and an indepth understanding of web development practices, tools and technologies
You enjoy learning and picking up new things
You’re flexible and able to adapt to changing priorities
You have full software development lifecycle experience including CI/CD and testing
You’re collaborative with Agile team experience, happy to mentor more junior developers
You’re likely to be degree educated in Computer Science or similar tech discipline
What’s in it for you:
As a Senior Full Stack Developer you will receive a competitive package:
Salary to £100k
25 days holiday (increasing to 30), plus Christmas Eve
Vitality healthcare plus a host of wellbeing benefits
Pension
Family leave and enhanced maternity scheme
Continual career and self development opportunities
Onsite gym, and partnership with Octopus Electric Vehicles and Evans Cycle to Work scheme, there’s showers and towels if you do decide to cycle!
Apply now to find out more about this Senior Full Stack Developer / Engineer (JavaScript Python API) opportunity.
At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.
Full-Stack Developer (.NET / Golang)
Avanti
St Albans
Fully remote
Mid
£40k - £50k
RECENTLY POSTED
dot-net
goland
react
aws
processing-js
redis
+5
Location: Remote-first (UK-based only)
Salary: £40,000 - £50,000
Contract: Permanent
About the Business:
Our client is a leading technology business delivering real-time platforms and analytics to major sports organisations and broadcasters worldwide. Their cutting-edge systems process huge volumes of live sports data, powering everything from performance insights to simulations and streaming services.
This is your chance to join a fast-moving, remote-first engineering team working on complex, high-performance systems at scale.
The Role:
We’re seeking a talented Full-Stack Developer with strong experience in Golang and .NET to play a central role in our development team. You’ll be building real-time APIs, WebSocket systems, and large-scale distributed applications, as well as contributing to frontend projects using React and Next.js. The role also involves working with AWS and Kubernetes to deliver cloud-native infrastructure that can handle thousands of concurrent connections.
This is a hands-on position where you’ll be solving challenging problems, working on exciting live-data projects, and developing your expertise in Golang within a collaborative environment.
Key Skills:
Essential
Strong experience with Golang
Solid background in .NET / C#
WebSockets and real-time data processing
API development and strong problem-solving ability
Remote working experience with excellent communication skills
Desirable
Node.js
React / Next.js
AWS and Kubernetes
PostgreSQL, Redis (caching)
Candidate Profile
Mid-level
Self-motivated, proactive, and able to work independently
Comfortable in a remote-first culture
Important to Note:
Some of the client’s projects involve supporting organisations in the gambling industry, so applicants must be comfortable working in this space.
Senior Rust Full Stack Developer & Team Lead
NonStop Consulting Ltd
London
In office
Senior
£70k - £90k
RECENTLY POSTED
rust
react
aws
postgresql
typescript
docker
+1
Senior Full Stack Engineer & Team Lead
Remote (UK-based) Full-time Renewable Energy Platform
About the CompanyWe are a mission-driven renewable energy platform building the digital backbone for the energy transition. Our technology connects producers and corporate buyers, delivering real-time transparency in energy trading, certification, and reporting. By tackling complex data and market workflows, we help accelerate the global shift to clean energy.
The RoleWe’re looking for a Senior Full Stack Engineer & Team Lead to join a small, high-impact team with the foresight to scale. This is not a manager-only role - you’ll spend about 80% of your time hands-on, coding and architecting, while dedicating the rest to mentoring, guiding, and shaping the technical roadmap.
You Will
Build real-time trading workflows and data-heavy applications.
Lead and mentor a small team while setting coding standards and best practices.
Take ownership of architecture and technical direction.
Collaborate with product and stakeholders to align engineering with business outcomes.
What We’re Looking For
7+ years of full stack engineering experience.
Strong hands-on skills in Rust (React/TypeScript and PostgreSQL also key).
2+ years’ experience as a Tech Lead or Team Lead.
Solid knowledge of DevOps practices (CI/CD, Docker, AWS).
Comfortable balancing hands-on coding with leadership.
Nice to Have
Background in trading, energy, or financial systems.
Multi-tenant SaaS patterns.
Performance tuning for high-traffic, time-series systems.
Why Join
Mission-driven role with a direct impact on renewable energy markets.
Work with modern technologies (Rust, React, TypeScript, cloud-native stack).
Combine hands-on engineering with leadership and architecture ownership.
Opportunity to grow with a team that’s scaling quickly.
AI Engineer - Python,React, AWS - £70,000
WüNDER_TALENT
London
Hybrid
Mid
£60k - £70k
RECENTLY POSTED
react
aws
python
AI Engineer - Python, React, AWS - £70,000 - London
We’re building AI assistants that live in the real world - answering calls, joining video rooms,
running in physical spaces. It’s not a research project, this is a chance to work on a product
launching in real-word locations and scenarios.
We’re looking for someone who wants to build products and own problems end-to-end, work
directly with customers, and get things done without layers of PMs or design teams. If you’re the
kind of engineer who likes to be left alone to build - and then sit down with product owners to
see if it actually works - this might be for you.
What You’ll Do
Build real-time AI products using Python, AWS, LiveKit
Shape AI assistants for genuine human interactions
Own problems end-to-end - no PM bureaucracy
Deploy scalable infrastructure (ECS, Lambda, DynamoDB)
Work directly with customers to iterate fast
Frontend development when needed (React/React Native)
What We Want
Python expert comfortable with large, async projects
Interest in cutting-edge AI: RAG, Knowledge Graphs, Graphiti
AWS confident - infrastructure doesn’t intimidate you
Ship-it mentality - you want to build products people actually use
London-based (hybrid work)
Independent worker who enjoys talking to users
Why Join Us
Early role in a shipping product with real customers
Big project, small team - your code matters
Zero bureaucracy - just build and deliver
Shape a real-world AI project from the ground up
Ready to build AI that actually works?
Graduate / Junior Developer, Python, JavaScript, PHP - London
Noir
London
Fully remote
Graduate
£35k - £50k
RECENTLY POSTED
php
javascript
python
react
react-native
django
+1
(Tech stack: Graduate / Junior Developer, Python, JavaScript, PHP, Graduate / Junior Developer)
In 2012 our client launched a social messaging platform that has been taking the US by storm. After an extremely successful period our client has decided to hop across the Atlantic, in a bid to expand their sphere of influence and take up a firm foothold in the UK and European markets.
A number of new offices are being opened in the UK and our client is looking for talented, enthusiastic and passionate Graduate / Junior Developer to bring their product to these new markets and help enhance this already successful company!
These roles would be suitable Graduate / Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, JavaScript, PHP, React, React Native, Django, Postgres, Docker and Agile; which might have been acquired as part of your degree course or through a placement year in industry.
All Graduate / Junior Developer positions come with the following benefits:
30 days holiday (plus 8 UK Bank Holidays).
Flexible working hours
An early finish on Fridays that fall in the months of June, July and August.
£10,000 training allowance including attendance of Microsoft events and conferences.
4 days a month innovative time.
Free gym membership including yoga sessions.
Summer BBQs.
Birthday bonus package - including time off work on your birthday, dinner at a top restaurant or a paid day trip to a European destination.
Location: London, UK / Remote Working
Salary: £35,000 - £50,000 + Bonus + Pension + Benefits
Applicants must be based in the UK and have the right to work in the UK even though remote working is available.
NC/RG/GRALON
.NET Developer, Graduate / Junior
Noir
Multiple locations
Fully remote
Graduate
£35k - £45k
RECENTLY POSTED
dot-net
react
entity-framework
asp-net
aws
mongodb
+10
.NET Developer, Graduate / Junior - Computer Gaming Co - Manchester
(Tech stack: Graduate / Junior .NET Developer, .NET 9, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, Web API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, Graduate / Junior, .NET Developer)
Having sold over 100 million games consoles and over 500 million games over the last decade, my client is undoubtedly the world’s most recognised computer gaming brand. We have 2 brand new requirements for Graduate / Junior .NET Developer to work in their plush Manchester offices.
These roles would be suitable Graduate / Junior .NET Developer who have recently graduated from university and have a basic understanding of the .NET framework (.NET Core / ASP.NET MVC, C#) which might have been acquired as part of your degree course or through a placement year in industry.
You will follow the firm’s career progression programme and will receive industry recognised training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB.
This is a truly amazing opportunity to work for a forward thinking and progressive company, one that can provide you with on-going support, a structured career path, great benefits and very stylish offices.
Location: Manchester, UK / Remote Working
Salary: £35,000 - £45,000 + Bonus + Pension + Benefits
Applicants must be based in the UK and have the right to work in the UK even though remote working is available.
Noir continues to be the leading Microsoft recruitment agency; we can help you make the right career decisions!
Full Stack Software Developer
Computappoint
London
In office
Mid
Private salary
RECENTLY POSTED
react
entity-framework
git
javascript
typescript
restful
+2
Location - LondonHybrid - 2 days in office per week
Salary: Up to £80K
We’re looking for a talented Full Stack Developer to join our client - a leading Global Law Firm - as part of their Engineering team, where innovative technology powers high-impact legal work. You’ll help design and build modern, scalable systems used across international offices, working closely with a collaborative team of developers, designers, and stakeholders. While Full-Stack skills are essential, this role has a strong emphasis on the Front-End.
You’ll Have the Opportunity to:
Design and develop intuitive, responsive web applications using modern JavaScript frameworks that users love
Build secure, scalable full-stack solutions that solve complex legal business challenges
Collaborate with UX designers and stakeholders to bring creative visions to life
Optimise front-end code for peak performance, accessibility, and cross-browser compatibility
Champion software quality through rigorous testing and continuous improvement practices
Drive innovation through Agile methodologies and collaborative problem-solving
Maintain business-critical systems and see projects through to successful completion across global offices
The Ideal Candidate:
Proven experience as a Full Stack Developer with a passion for excellence
Extensive proficiency in JavaScript, TypeScript, and modern front-end frameworks (React preferred)
Skilled in architecting and implementing component-based systems with strong HTML5 and CSS3 expertise
Takes pride in software craftsmanship and clean, well-designed codebases
Experienced in developing web applications with RESTful APIs and modern build tools
Thrives in Agile environments, embracing ceremonies and iterative development
Well-versed in Git version control in multi-developer environments
Bonus Points For:
Experience with .NET/.NET Core development and Entity Framework
Knowledge of MS SQL Server and database optimisation
Familiarity with accessibility standards (WCAG) and web performance optimisation
Services offered by Computappoint Limited are those of an Employment Business and/or Employment Agency in relation to this vacancy.
Computappoint do not use AI to filter or assess candidates, we use experienced and dedicated recruiters, who want to match the best people to roles.
Senior Software Engineer
Metamindz UK
London
In office
Senior
£80k - £100k
RECENTLY POSTED
react
vercel
Looking for a Senior Software Engineer with strong communicational skills, with opportunity to become a lead in the future.
In person - meeting in London once a month tops. So you can be based anywhere in the UK.
HIGHLY advanced English.
Advanced skills in Next.js, React,
GraphQL, Supabase, Vercel, and Google Cloud Platform.
Talamo is a fast-growing ed-tech start-up helping schools identify and support neurodiverse students early. Launched in 2024 with a dyslexia test, it now works with 400+ schools and has completed thousands of tests.
The role highlights for candidates:
Hands-on work: building new features, improving performance, delivering on the product roadmap
Direct impact on architecture and long-term technical strategy
Opportunity to help recruit, mentor, and shape the future engineering team
Work on meaningful products that transform how schools support students
Your skills
Hands-on and adaptable: You love being in the thick of development
and can shift gears quickly when needed.
Adaptability is key.
You should value best-practices that ensure
quality output - things like continuous deployment, testing, code
reviews, pair programming and retros.
You have an interest in management,
and have had some experience leading a squad or small team
previously.
Open to AI: You understand the practical applications of LLMs (not
just hype) and see how AI can improve personalisation in technology.
Understand how to increase
productivity without sacrificing quality.
IS IT YOU?
We warmly invite you to apply!
Senior Software Engineer
Tank Recruitment
London
Hybrid
Senior
Private salary
RECENTLY POSTED
react
github
aws
graphql
typescript
jest
+2
Location: London (Hybrid 2 Days a week)
Salary: £70,000 - £90,000
TypeScript - Node - React - GraphQL - AWS - CI/CD -
The Opportunity
We’re working with a fast-growing technology business that is looking to add a Senior Software Engineer to their high-performing, cross-functional engineering team.
This is a fantastic opportunity to join a company where innovation meets real-world impact. You’ll be building scalable, cloud-native systems, contributing to product and architectural decisions, and helping shape an engineering culture of excellence.
Our client is seeking someone who thrives on solving complex challenges, loves collaborating in a modern engineering environment, and has a passion for writing clean, well-tested code.
The Role
As a Senior Software Engineer, you will:
Build & Deliver - Design, develop, and maintain full-stack solutions using TypeScript, AWS, GraphQL, and more.
Take Ownership - Work across frontend, backend, and infrastructure with responsibility for the systems you build.
Innovate - Help integrate AI and automation into the product suite to tackle problems in smarter ways.
Collaborate - Contribute to code reviews, pair programming, and technical discussions within a talented team.
Engineer with Quality - Apply TDD practices, ensuring robust automated testing and CI/CD pipelines.
Keep Systems Running Smoothly - Ensure applications are secure, scalable, observable, and performant in production (tools include DataDog).
To be successful in this role, you will have:
Significant experience as a Senior Software Engineer (or equivalent).
Strong full-stack expertise across JavaScript/TypeScript, Node.js, React, GraphQL, and AWS (EKS, Lambda, RDS).
A proven track record in building resilient APIs and managing backend services/databases.
Experience with TDD and testing frameworks such as Jest and Pact.
Knowledge of CI/CD pipelines (ideally GitHub Actions).
Hands-on experience with observability/monitoring tools (e.g., DataDog).
A proactive, problem-solving mindset with the ability to work both independently and collaboratively.
Senior Software Engineer
Location: London (Hybrid 2 Days a week)
Salary: £70,000 - £90,000
TypeScript - Node - React - GraphQL - AWS - CI/CD -
Principal Salesforce Engineer - Azure/.Net/React
Robert Walters
London
In office
Mid
£100k - £120k
RECENTLY POSTED
salesforce
react
dot-net
Principal Engineer
This is a fantastic opportunity to work in a product-led operating model, where all our teams are value stream aligned with all the different resource types needed to get from idea to done with minimal hand-offs.**Open to multi locations (2-3 days a week):**LondonTunbridge WellsBournemouthBristol
We’re focused on building out our Single Digital Platform, centred around Salesforce, but involving a significant .NET estate and use of Azure services. Our mission is to re-platform our business, providing efficiency, flexibility, and more than anything else, better health outcomes for our millions of members in the UK.
What you’ll be doing:
Leading a product engineering team, taking ownership of meeting delivery outcomes as per our transformation roadmap
Working within the Engineering Leadership Team to set the Engineering strategy and delivering on it
Spending a large amount of your time being hands-on with the code, e.g. reviewing Pull Requests and ensuring best practices are followed by both full time and third-party engineers.
Inspiring excellence in our teams and driving improvements in employee engagement, performance, and wellbeing.
Representing engineering in your teams, working with Product Owners, Scrum Masters, and Business subject matter experts, to ensure our business commitments are delivered with quality and to expectation.
Assessing new technology solutions
Ensuring our non-functional requirements are met regarding performance, scalability, resilience, and GRC requirements (Information security, risk, industry regulation compliance)
Helping to encourage collaboration and product ownership across developers and testers
Ensuring continual shift of secure, quality and tested code activity left
Working to improve and ensure implementation of our SDLC
Working in a multi-vendor environment, providing direction and support to the delivery teams
Improving our core DORA metrics and ensuring optimal flow through our systems and processes What you’ll bring:
Proven experience building and leading high performing engineering teams
Expertise in Salesforce and it’s ecosystem, building business solutions using Salesforce and scaling them in large enterprises, integrating Salesforce based services with multiple different applications and architectures.
Experience with Azure and .NET services, ADO pipelines, and React web applications is a big plus.
Experience designing and delivering complex solutions to time and budget, being accountable for outcomes not output
Proven experience in being responsible for application estates that manage high volumes delivering critical business value, with experience of doing this in the financial services sector a plus
Strong stakeholder management across a variety of business domains
Good understanding of current and emerging technologies and their potential to deliver business benefits
Ability to translate business strategy into technical solutions and business requirements into technical design
Experience working in Agile environments and a deep understanding of how to ensure optimum flow of work through the full SDLC
Prior experience working in a product-centric organisation preferred**Open to multi locations (2-3 days a week):**LondonTunbridge WellsBournemouthBristol
Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates
Backend Software Engineer Java Kotlin AWS
Client Server Ltd.
London
In office
Mid
£70k - £85k
RECENTLY POSTED
aws
kotlin
java
linux
react
redis
+5
Backend Software Engineer / Developer (Java 17 Kotlin AWS) London / WFH to £85k
Are you a technologist Backend Software Engineer with strong Java skills looking to progress your career, working with a modern cloud based infrastructure and a range of technology?
You could be joining a hugely successful and growing commodities trading firm that specialise in trading silver and gold.
As a Backend Software Engineer you’ll collaborate with the Lead Engineer on the core trading platform as the company looks to scale the platform and introduce new features. There’s an emphasis on code quality; designing and developing highly complex web based trading platforms working across the full development lifecycle.
The technology stack includes Java 17, Kotlin, Spring Boot and AWS amongst others; you’ll be encouraged to expand your skillset using the latest technologies and choosing the best tool for the job in a friendly Agile team environment.
WFH Policy:
You’ll join the team in the West London office with flexibility to work from home twice a week.
About you:
You are degree educated, having achieved a 2.1 or above gained in Computer Science (or similar STEM discipline) from a top tier university (e.g. Russel Group) backed by A’s at A-level
You have strong Java and Kotlin development experience
You have experience with Agile processes and TDD
You have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms
Other tech in the stack includes Scala, React, Spring, Oracle, Redis, Kubernetes, Docker and Linux so previous exposure to any of these would be beneficial
You’re collaborative with good communication skills
What’s in it for you:
As a Backend Software Engineer / Developer you will earn:
Salary to £85k
Bonus
Hybrid working (x3 days in London per week)
Learning and career development opportunities
Apply now to find out more about this Backend Software Engineer / Developer (Java 17 Kotlin AWS) opportunity.
At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.
Senior AI Developer
ARC IT Recruitment
Multiple locations
In office
Senior
Private salary
RECENTLY POSTED
react
github
javascript
Senior AI Developer**£80,000 + bonus + benefits****London or Brighton** Join a leading international eCommerce organization committed to driving innovation through AI. We are looking for a Senior Frontend Developer to lead the modernization of our core systems, utilizing React and JavaScript to enhance performance and efficiency. Your expertise will be key in transforming our technology stack and implementing AI-powered solutions. **About the Role:**Play a pivotal role in transforming our technology stack and driving the adoption of AI-powered tools to enhance development workflows. Modernize critical systems and implement intelligent solutions that support business growth and efficiency.Key Responsibilities:
Lead the migration of legacy systems to a modern tech stack using React, JavaScript, and cloud platforms.
Design and implement AI-driven solutions to improve code quality, automate tasks, and boost productivity.
Collaborate with IT and product teams to redesign and enhance core business applications.
Mentor junior developers, fostering a culture of continuous learning and innovation.
Essential Skills:
5+ years of software development experience, including significant work in system modernization.
Strong expertise in React and JavaScript.
Familiarity with REST APIs and cloud infrastructure.
Hands-on experience with AI-based developer tools (e.g., GitHub Copilot, ChatGPT, Tabnine).
Excellent leadership, communication, and collaboration skills.
Passion for clean code, software architecture, and continuous improvement.
Why Join Us?
Competitive salary (£80,000+) and benefits package.
Opportunity to shape our technical direction and implement innovative solutions.
Collaborative and supportive team environment.
Chance to make a significant impact on a growing business.

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