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Backend Engineer Jobs in London
Overview
Looking for Backend Engineer jobs in London? Discover top IT opportunities tailored for backend developers on Haystack. Whether you're skilled in Java, Python, or Node.js, explore the latest backend engineering roles with leading tech companies in London and take your career to the next level. Start your search now and find your perfect backend developer job in London today!
Staff Software Engineer - Back End
Capital One UK
London
Hybrid
Senior - Leader
Private salary
RECENTLY POSTED

White Collar Factory (95009), United Kingdom, London, LondonStaff Software Engineer - Back End About this role

Do you love shaping the technical landscape and driving innovation across the organisation?

Are you passionate about solving complex business problems and supporting multiple teams toward a shared technical vision?

At Capital One, you’ll be part of a community of technical leaders who drive engineering excellence, foster innovation, and deliver impactful solutions that meet real customer needs.

What You’ll Do

Own and drive the technical strategy for a significant business outcome or technology domain, spanning multiple teams and influencing the overall technical direction

Lead and coordinate the efforts of multiple teams, ensuring their collective work aligns with broader business objectives and technology strategy

Proactively identify emerging patterns, define and evangelise best practices, and establish reusable frameworks that enhance engineering productivity

Build and maintain strong relationships with key stakeholders, including senior leadership, product owners, and architects

Represent Capital One in external technical forums, contributing to vendor/industry discussions

Drive service quality standards and practices for your domain, guiding complex incident resolution

Develop and advocate for strategies to proactively manage technical debt across multiple teams

Actively mentor and develop engineers, fostering a culture of continuous learning

What we’re looking for

Deep expertise in Java

Deep expertise in system design and distributed architectures

Track record of leading technical initiatives across multiple teams

Strong experience with cloud platforms (AWS, Azure, GCP)

Proven experience setting a multi-team technical vision and strategy

Strong track record of technical leadership and influence without authority

Experience driving engineering standards and best practices across organisations

Experience of steering Communities of Practice or technical forums

Strong business acumen and ability to translate technical concepts for various audiences

Where and how you’ll work

This is a permanent position based in our London office.

We have a hybrid working model which gives you flexibility to work from our office and from home.

We’re big on collaboration and connection, so you’ll be based in our London office 3 days a week on Tuesdays, Wednesdays and Thursdays.

What’s in it for you

Bring us all this - and you’ll be well rewarded with a role contributing to the roadmap of an organisation committed to transformation

We offer high performers strong and diverse career progression, investing heavily in developing great people through our Capital One University training programmes (and appropriate external providers)

Immediate access to our core benefits including pension scheme, bonus, generous holiday entitlement and private medical insurance – with flexible benefits available including season-ticket loans, cycle to work scheme and enhanced parental leave

Open-plan workspaces and accessible facilities designed to inspire and support you. Our Nottingham head-office has a fully-serviced gym, subsidised restaurant, mindfulness and music rooms. In London, you can heighten your mood with a run on our rooftop running track or an espresso at the Workshop Coffee café

What you should know about how we recruit

We pride ourselves on hiring the best people, not the same people. Building diverse and inclusive teams is the right thing to do and the smart thing to do. We want to work with top talent: whoever you are, whatever you look like, wherever you come from. We know it’s about what you do, not just what you say. That’s why we make our recruitment process fair and accessible. And we offer benefits that attract people at all ages and stages.

We also partner with organisations including the Women in Finance and Race At Work Charters, Stonewall and upReach to find people from every walk of life and help them thrive with us. We have a whole host of internal networks and support groups you could be involved in, to name a few:

REACH – Race Equality and Culture Heritage group focuses on representation, retention and engagement for associates from minority ethnic groups and allies

OutFront – to provide LGBTQ+ support for all associates

Mind Your Mind – signposting support and promoting positive mental wellbeing for all

Women in Tech – promoting an inclusive environment in tech

EmpowHER - network of female associates and allies focusing on developing future leaders, particularly for female talent in our industry

Enabled - focused on supporting associates with disabilities and neurodiversity

Capital One is committed to diversity in the workplace. If you require a reasonable adjustment, please contact All information will be kept confidential and will only be used for the purpose of applying a reasonable adjustment.

For technical support or questions about Capital One’s recruiting process, please send an email to

Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site.

Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

The following information aims to provide potential candidates with a better understanding of the requirements for this role.

Who We Are

At Capital One, we’re building a leading information-based technology company. Still founder-led by Chairman and Chief Executive Officer Richard Fairbank, Capital One is on a mission to help our customers succeed by bringing ingenuity, simplicity, and humanity to banking. We measure our efforts by the success our customers enjoy and the advocacy they exhibit. We are succeeding because they are succeeding.

Guided by our shared values, we thrive in an environment where collaboration and openness are valued. We believe that innovation is powered by perspective and that teamwork and respect for each other lead to superior results. We elevate each other and obsess about doing the right thing. Our associates serve with humility and a deep respect for their responsibility in helping our customers achieve their goals and realize their dreams. xohmjla Together, we are on a quest to change banking for good.

AI Integration Engineer
Teksystems
London
Hybrid
Junior - Mid
Private salary
RECENTLY POSTED

Role: Software Engineer

Contract length: Initial 4 months

Work style: 2 days a week in office

Description

Global Animal Health client is looking to accelerate adoption of AI capabilities (specifically persona generation and AI-enabled workflows) within their R&D and Regulatory divisions, using their internal GPT platform.

Key Responsibilities

  • Persona Creation & Management
    • Support teams in building and consuming persona-based services within their internal GPT platform.
    • Help promote and scale persona adoption across the business.
  • AI Platform Integration
    • Work with product teams building custom UIs and services that require consuming AI platform APIs.
    • Not an AI Engineer role, more focused on integrating AI into software workflows.
  • Regulatory Use Cases
    • Support automation of regulatory dossier creation.
    • Help populate product information and streamline submission processes to regulatory authorities.
  • Mini Solutions / ChatGPT Extensions
    • Build small-scale solutions inside their internal GPT chat platform.
    • Collaborate with product teams on in-flight custom builds to improve consumption of AI services.

Skills

  • API
  • AI
  • Integration
  • GPT
  • Deployment
  • Python
  • Microservices

Job Title: AI Integration Engineer

Location: Hampshire, UK

Job Type: Contract

Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as “Allegis Group”). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at https://www.allegisgroup.com/en-gb/privacy-notices.

To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to https://www.allegisgroup.com/en-gb/privacy-notices.

We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the “Contacting Us” section of our Online Privacy Notice at https://www.allegisgroup.com/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield.

Senior Software Engineer
LANCESOFT LTD
London
Hybrid
Senior
Private salary
RECENTLY POSTED
  • Location:Brick Lane, London
  • Days in the Office:2 days per week
  • Job Title:Senior Engineer
  • Length of Contract:6 months, with potential extension

Key Skills:

  • Work embedded in a cross-functional team with software developers, technical product owners and testers all working together towards common goals to develop JVM applications using Test Driven Development and Pair Programming
  • Drive the design and implementation of our systems, knowing the context and why we are implementing what we are implementing, whilst always looking to improve our systems and ways of working
  • Mentor and coach other engineers
  • A willingness to pair program

Must-Haves:

  • Strong verbal communication and collaboration skills
  • In-depth knowledge and hands-on experience in a cross-functional, agile development team
  • Enthusiasm for code development and education in this area

Nice-to-Haves:

  • Experience in pair programming
  • Proficiency in idiomatic Kotlin for application development

Experience:

  • Extensive knowledge of Java programming language (5 years+)
  • 5+ years practical experience in test driven development

AI Integration:

  • We have an AI special interest group and are adopting AI based on individual context
Senior Java Engineer Risk & Compliance
Sanderson
London
Hybrid
Senior
£110,000 - £140,000
RECENTLY POSTED

Role: Lead Java Engineer - Risk & Compliance PlatformLocation: London (hybrid)Salary: £125,000 - £150,000 + Bonus

Are you an exceptional Java engineer ready to step into a true leadership role within one of the most critical platforms in global banking?

We’re working with a top-tier financial institution who are expanding their Risk & Compliance Platform Team and are looking for a Lead Engineer to help shape and deliver large-scale, business-critical systems across Market and Credit Risk.

You’ll be responsible for designing, building, testing and implementing high-quality software across the full system lifecycle, while working closely with senior engineering leadership, architects and key business stakeholders to influence technical direction and platform strategy.

Ideal Candidate

We’re looking for a technically strong Lead Engineer with deep server-side expertise and a passion for building resilient, scalable systems. You’ll be comfortable leading complex engineering initiatives, influencing design decisions, and mentoring other engineers within the team.

You’ll bring strong experience in:

  • Core Java, with a deep understanding of multithreading and concurrency
  • Grid Computing
  • Cloud-native development, ideally on GCP
  • Kubernetes and containerised environments
  • Designing and delivering systems that operate at scale with high availability and resilience

Experience within Market Risk or Credit Risk is highly desirable, and candidates with exposure in this domain will be prioritised.

You’ll also be capable of translating complex business and regulatory requirements into robust technical solutions, while maintaining a strong focus on performance, security and operational excellence.

If this sounds of interest, get in touch and we can arrange a confidential discussion at a time that suits you.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

D365 CE Senior Developer
WeDo Technology Solutions Limited
London
Fully remote
Senior
£70,000 - £75,000
RECENTLY POSTED
TECH-AGNOSTIC ROLE

Senior Developer D365 CE- Remote- Permanent - £75,000WeDo Technology is partnering with a global manufacturing organisation to support their recruitment of a Senior D365 Developer.Our Client is looking for a D365 Senior CE Developer to take technical ownership of a growing Dynamics 365 Customer Engagement estate, leading architecture, integrations and platform optimisation across a live environment.What You’ll Be Doing

  • Leading the architecture and design of D365 CE solutions, including complex integrations and custom applications.
  • Building and supporting integrations between D365 CE and third-party platforms (e.g. marketing automation, finance systems) using Logic Apps, Azure Functions and Service Bus.
  • Developing custom web applications (e.g. Blazor-based portals) integrated with D365 CE.
  • Delivering Power Platform solutions (Canvas Apps, Power Automate) to streamline operational processes.
  • Supporting and enhancing D365 CE & Field Service environments post go-live, including production issue resolution and continuous improvement.
  • Owning development standards, conducting code reviews and improving technical quality across the estate.
  • Supporting data migrations and system upgrades, including CRM legacy-to-D365 transitions.
  • Strengthening DevOps practices, environment strategy (Dev/UAT/Training) and CI/CD processes.

What We’re Looking For

  • Strong hands-on experience with Dynamics 365 CE & Field Service.
  • Proven background in solution architecture and technical design.
  • Experience integrating D365 using Azure integrations (Logic Apps, Service Bus, Functions).
  • Power Platform experience (Canvas Apps, Power Automate).
  • Experience working alongside or overseeing SI partners.
  • Knowledge of DevOps, source control and release management best practice.
Snowflake DevOps Engineer
Robert Half
London
Hybrid
Mid - Senior
Private salary
RECENTLY POSTED

Robert Half Technology are assisting a market leading insurance organisation to recruit a Snowflake DevOps Engineer on an 6 month contract basis. London based - hybrid working

Role

Core Responsibilities

The combined role demands expertise in both traditional database administration and modern DevOps principles:

  • Security and Compliance: Implementing and managing security measures like role-based access control (RBAC), user authentication (SSO, MFA), data encryption, and data masking to enforce security policies and compliance standards.
  • Automation and CI/CD: Automating routine administrative tasks and building/maintaining CI/CD pipelines (using tools like Azure DevOps, or ) for reliable and automated deployment of Snowflake SQL scripts and stored procedures.
  • Monitoring and Troubleshooting: Setting up and managing monitoring and alerting systems to track platform health and performance, and serving as the first point of contact for troubleshooting and resolving pipeline issues and operational incidents. Keeping artefactory certificates updated and solving snyk scanner/SonarQube issues. Understand networking issues is also a plus.
  • Collaboration: Acting as a liaison between data engineering and networking teams to solve issues in the pipeline
  • Platform Administration: Administering the Snowflake platform across different environments (development, test, production), including managing accounts, warehouses, databases, schemas, and other database objects. Managing secrets, RBAC (role hierarchy), Database change management and reporting role needs.
  • Performance and Cost Optimisation: Monitoring system performance, optimising query performance, managing warehouse sizes, and proactively controlling credit usage and storage costs to ensure efficiency.

Technologies

The Snowflake DevOps Engineer will have experience with the following:

  • Azure DevOps (or any other CI/CD pipeline technology)
  • SQL
  • Snowflake
  • DBT
  • DCM tech

Company

  • Market leading insurance organisation
  • global presence with offices in london
  • hybrid working

Salary & Benefits

company, depending on experience

The salary range/rates of pay is dependent upon your experience, qualifications or training.

Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data:

Full Stack Engineer
Pertemps Cambridge
London
Hybrid
Mid - Senior
£60,000
RECENTLY POSTED

Full Stack EngineerLocation: Hybrid, 2 days per week in Central London About the RoleAn exciting opportunity has arisen for a Full Stack Engineer to join a high-performing engineering team working on a large-scale international platform. You’ll design, build and optimise high-performance software solutions across frontend and backend systems, delivering new features, improving performance, and ensuring reliability at scale.This is a chance to work on a high traffic, international product where engineering quality, scalability, and innovation are central to success.Key Responsibilities

  • Design, develop, test and deploy scalable full stack solutions
  • Deliver new features across frontend and backend systems
  • Develop and maintain RESTful APIs and backend services
  • Optimise performance and resolve scalability challenges
  • Collaborate with product, design, and engineering teams
  • Participate in code reviews and uphold high engineering standards
  • Develop automated tests and maintain code quality

Skills and Experience

  • Proven experience as a Full Stack Engineer
  • Frontend expertise in Vue.js and Nuxt.js (primary strength)
  • Capable of backend tasks using Go or PHP
  • Strong knowledge of HTML, CSS, and modern JavaScript ES6+
  • Experience with RESTful APIs, gRPC, SQL/NoSQL databases
  • Familiarity with Git, containerisation, and deployment tools
  • Excellent problem solving, communication, and collaboration skills
  • Ability to work independently and in a team

Why Apply

  • Work on a high traffic international platform
  • Hybrid role, 2 days per week in a Central London office
  • Collaborative and forward-thinking engineering team
  • Opportunity to influence platform evolution and growth
Programmer/Analyst
Pontoon
London
Hybrid
Junior - Mid
£329/day
RECENTLY POSTED

Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.

Join Our Team as an Analyst Programmer!

Are you ready to take your programming skills to the next level in the dynamic retail industry? Our client is on the lookout for a talented Analyst Programmer to partner with the EU Fleet Planning team. If you’re passionate about automation and data analysis, this temporary role could be your next big opportunity!

Role: Analyst Programmer

Duration: 6 Months

Location: London (5 days on site)

Rate: £329 per day (PAYE)

What You’ll Do:

As an Analyst Programmer, you will play a vital role in:

  • Collaborating with the EU Fleet Planning team to accelerate the execution of the automation roadmap.
  • Creating, testing, and analyzing User Acceptance Test (UAT) scenarios for the development of a science optimization model.
  • Operationalizing the science optimization model within fleet scheduling tools using real business data.

You’ll work closely with a Senior Fleet Supply Chain Manager based in central London, ensuring effective ramp-up and interaction. This role requires you to be in the office 3-4 days a week to foster collaboration and innovation.

What We’re Looking For:

We are seeking a candidate who embodies our leadership principles:

  • Ownership: Take initiative and be accountable for your work.
  • Insist on the Highest Standards: Strive for excellence in everything you do.
  • Dive Deep: Analyze data and processes thoroughly to drive improvements.
  • Deliver Results: Focus on achieving goals and meeting deadlines.
  • Learn and Be Curious: Embrace new challenges and continuously seek knowledge.

The ideal candidate will demonstrate:

  • A curiosity to quickly learn team operations and work independently on specific tasks to expedite UAT phases.
  • Proficiency in building, managing, and analyzing complex data sets (basic requirement is through MS-Excel; SQL knowledge is mandatory, with proficiency being a plus).
  • An ability to grasp ambiguous technical and business concepts and requirements.
  • Strong critical thinking skills to operate and deliver independently with limited information.

Why Join Us?

  • Exciting Challenges: Dive into a role that offers real impact in fleet scheduling operations.
  • Professional Growth: Work alongside experienced professionals and enhance your skill set.
  • Collaborative Environment: Be part of a team that values communication and teamwork.

If you are ready to embrace this exciting opportunity and make a difference in the retail sector, we want to hear from you!

Apply Now!

Candidates will ideally show evidence of the above in their CV to be considered.

Please be advised if you haven’t heard from us within 48 hours then unfortunately your application has not been successful on this occasion, we may however keep your details on file for any suitable future vacancies and contact you accordingly.

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.

Python Developer
Parkside Office Professional
London
In office
Senior
£400/day - £425/day
RECENTLY POSTED

Senior Python DeveloperLondon Contract Energy / Trading Environment£400-£425 per day (Inside IR35)We are supporting a leading organisation operating within the energy and commodities space who are looking to engage a Senior Python Developer to support the build-out of advanced data-driven applications and analytical tools.This is a hands-on engineering role working at the intersection of data, analytics and front-office stakeholders. You will be responsible for building clean, modular Python applications, manipulating complex datasets, and delivering interactive dashboards used for commercial insight.The RoleYou will:

  • Develop robust, production-grade Python applications
  • Manipulate and analyse large datasets using pandas and numpy
  • Build interactive dashboards using Plotly Dash
  • Design modular, reusable and well-tested code
  • Integrate with REST APIs and backend services
  • Collaborate with commercial and technical stakeholders to translate requirements into scalable solutions
  • This is a highly technical role suited to someone who enjoys building clean systems rather than quick scripts.

Required Experience

  • Hands-on Python development experience
  • Strong object-oriented programming skills
  • Deep experience with pandas and numpy for data manipulation
  • Experience with virtual environments, dependency management and packaging
  • Strong understanding of software engineering best practices including Git, unit testing (pytest), documentation and code quality tools
  • Experience building data-driven applications in a commercial environment.
Lead Software Developer - Full Stack
INTEC SELECT LIMITED
London
Fully remote
Senior
£70,000 - £75,000
RECENTLY POSTED
+2

Lead Software Developer - Full Stack £72,000 + £3K on call RemoteOverview:An innovative and fast-growing healthcare technology organisation is seeking a Lead Software Developer to drive the evolution of its mission-critical clinical software platforms. This is a fantastic opportunity to play a key role in enhancing complex clinical systems, contributing to architectural improvements, and optimising secure, cloud-based platforms that support primary care services nationwide.You will adopt modern technologies and best practices to deliver scalable, high-performing features, while mentoring a team and helping drive innovation across the platform.Role and Responsibilities:

  • Lead the design, development, and optimisation of high-performance, cloud-based software solutions
  • Partner with Technical Design Authority to shape system architecture, APIs, and data models
  • Ensure secure, scalable integration with databases, third-party APIs, and messaging services
  • Drive performance optimisation, reliability, and robust data integrity standards
  • Mentor developers, promote Agile best practice, and elevate engineering standards
  • Participate in on-call rota and act as escalation point for critical incidents

Skills and Experience:

  • 5+ years’ software development experience with 2+ years in a senior or leadership role
  • Solid AWS experience (EC2, S3, RDS, Lambda) and cloud-native architecture
  • Proficient in SQL (MSSQL & PostgreSQL) and API integrations
  • Experience with CI/CD, Git, Jira, and modern DevOps practices
  • Strong understanding of secure coding principles (OWASP) and performance optimisation
  • Desirable: OAuth/OpenID, CloudFormation, React or Vue.js, healthcare interoperability standards (HL7, SNOMED, DM&D)

Package:

  • £72,000 + £3K on call
  • Great benefits package
  • Fully remote

Lead Software Developer - Full Stack £72,000 + £3K on call Remote

Java Developer - Financial Services
Hays Specialist Recruitment Limited
London
Hybrid
Senior
£600/day - £650/day
RECENTLY POSTED

I am currently working with a London-based financial services client who are actively multiple a senior Java Developers to work on a brand-new business-critical project.What you’ll need to succeed:

  • 5+ years’ Java Development experience in financial services.
  • Extensive experience with SpringBoot, Spring MVC, and Spring Security.
  • Strong experience in distributed programming.
  • Extensive microservices development experience with RESTful services.
  • Strong cloud experience.

What you’ll get in return:

  • Up to £650pd Umbrella.
  • London-based hybrid working.
  • Initial 6-month contract with extensions.

What you need to do now:If you’re interested in this role, click ‘apply now’ to forward an up-to-date copy of your CV, or call us now.If this job isn’t quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

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

Senior Node/AWS Developer
Method Resourcing
London
Hybrid
Senior
£80,000
RECENTLY POSTED

Senior Node/AWS Developer TypeScript Hybrid 3 days per week in Central London £80,000 + benefits + 10% Discretionary Bonus

Method Resourcing has partnered exclusively with a dynamic digital agency that collaborates with some of the biggest brands in the industry, and they’re looking for a Senior Node/AWS Developer to work on cutting-edge technology.

The Role: You’ll become a key player in the core platform team, working on cutting-edge, high-impact projects. Your expertise will help build and enhance image rendering engines, collaborating closely with frontend and backend leads to architect and implement Node.js or serverless solutions using AWS services from scratch.

? Why Apply?? Work with top-tier brands on exciting digital projects? Be part of a highly skilled tech-driven team? Leverage the power of AWS and serverless technologies? A fast-paced, innovative environment where your work makes an impact

The skills and experience my client are looking for:

  • 5+ years of experience in software engineering, with expertise in Node.js and REST API design.
  • Strong knowledge of AWS and serverless architecture.
  • Strong experience with TypeScript, ensuring clean, efficient, and maintainable code.
  • Experience with CI/CD pipelines using GitLab for continuous integration and delivery.
  • Proactive mindset - takes ownership, solves problems, and delivers results.
  • Ability to see the big picture, understanding the full scope of a project beyond just their part.

This is truly a fantastic opportunity for any ambitious engineer who’s looking to join a high performing team within an exciting institution. My client can offer the following benefits:

  • 10% Discretionary Bonus
  • Mental Health Recharge Days-two a year
  • 27 days annual leave + BH’s
  • Birthday off
  • Private medical + dental
  • Pension contribution
    • many more!

Working arrangements: This role requires 3 days per week travel to Central London. Please ensure you can do this ebfore applying.

Please apply, and if you’re interested in finding out more, please get in contact with Tom Morris by email .

Senior Node/AWS Developer TypeScript Hybrid 3 days per week in Central London £80,000 + benefits + 10% Discretionary Bonus

RSG Plc is acting as an Employment Agency in relation to this vacancy.

Software Developer (Java + Angular/React)
Harnham - Data & Analytics Recruitment
London
Hybrid
Mid - Senior
£50,000 - £65,000
RECENTLY POSTED

Software Developer

Surrey - Hybrid (3 Days in Office, Every Two Weeks)

£50,000 to £65,000.

A great opportunity to join a growing consultancy where you will build full stack software used across aviation, defence and public sector environments. You will work on varied, meaningful projects while enjoying autonomy, flexibility and strong technical standards.

The Company

They are a specialist consulting organisation delivering end-to-end software products that solve complex problems for their customers. They focus on innovation, quality and collaborative engineering, offering a supportive environment where you can rotate between challenging projects and contribute to real impact.

The Role

Deliver full stack software using Java and a modern frontend framework.

Contribute across design, development and cloud deployment.

Write high-quality, maintainable code and follow best practices.

Work closely with developers and data scientists on varied projects.

Help shape engineering standards and contribute to a positive team culture.

Your Skills and Experience

Strong commercial experience with Java and Spring.

Skilled in Angular or another modern frontend framework.

Familiarity with cloud environments, ideally Azure, plus tools such as Terraform.

Confident working full stack and across the SDLC.

Able to work independently and collaborate effectively.

Eligible to obtain UK Security Clearance.

What They Offer

£50,000 to £65,000 depending on experience.

Hybrid working with 1.5 days per week onsite.

25 days holiday plus bank holidays and option to buy 5 more.

Pension matched to 5 percent.

Five training days and five charity days per year.

One month per year working remotely abroad.

Annual performance-based pay review and bonus.

Technical Lead Specialist - e-commerce
Ashdown Group
London
Hybrid
Senior
Private salary
RECENTLY POSTED

Our client, a fast-scaling sports brand undergoing significant digital transformation are seeking a highly capable Lead Technical Specialist to own and lead their e-commerce and business systems transformation. This is a far reaching and delivery focused role with several key projects including a migration from their existing ecommerce platform to Shopify. The role is based at the company’s offices in West London 4 days a week with one day a week work from home.

As the Lead Technical Specialist you will be joining at a pivotal time for the company as they move into Direct-to-Consumer (DTC) channels and update their entire technology ecosystem including e-commerce, ERP, stock management, and enterprise integrations.

This is a hands-on technical role requiring both strategic thinking and operational execution and will see you managing the technical stack, supporting approx 25 hybrid/remote users and dealing with IT vendors and technology partners.

The ideal candidate will have:

  • Solid experience in IT, digital operations, or systems management roles within an SME.
  • Hands-on experience of managing a migration to Shopify and other e-commerce platforms
  • Strong understanding of system integrations, data flows, and cross-platform connectivity
  • Proven involvement in e-commerce re-platforming initiatives, either leading or supporting implementation
  • Experience contributing to ERP and inventory/stock management system implementations

This is a fantastic opportunity for an e-commerce Technical Specialist to join a forward-thinking company as they embark on an exciting transformation. The salary ranges from £60,000-£70,000 along with pension, private medical insurance, health cashback plan, cycle to work scheme, bonus scheme and free apparel/ sports goods available.

Senior Java Software Engineer - API - CI/CD - AI - Hybrid
Tech Talent ID
London
Hybrid
Senior
£100,000 - £120,000
RECENTLY POSTED

Senior Software Engineers are required by this FS leader as they continue their modernisation across software engineering approaches. Are you an experienced engineers who wants to contribute to the future of AI-led software development, working alongside liked-minded engineers really challenging what is possible in production.

In this role, you’ll work as part of a small team on the modernisation of high-value Legacy services using advanced AI tooling, shipping improvements in rapid cycles and demonstrating measurable gains in performance, reliability, and delivery speed. You’ll work on complex systems that directly unblock organisational velocity, using AI to analyse codebases, extract clean APIs, refactor safely, and deliver fully tested, production-ready services.
Alongside modernisation, you’ll build the AI-powered development infrastructure of the future: MCP-based service discovery, AI-assisted CI/CD pipelines, automated code review and test generation, and reusable tooling that elevates engineering productivity across the organisation.
This team is senior, and outcome-driven-ideal for engineers who love writing code, solving hard problems, and proving impact through shipped work.

Ideally you will be able to demonstrate -

  • An extensive history of Back End engineering experience (Java, microservices, large-scale systems)
  • A track record modernising production systems
  • Ideally, hands-on experience with LLMs, MCP, Copilot/Claude Code, or AI-powered automation
  • Evidence of real productivity gains achieved through AI in your workflow
  • An inquisitive nature, looking to challenge where applicable and push technical boundaries

This is an exciting opportunity to really push boundaries, please contact me for a full job spec and detailed conversation about the organisation and what they are looking to achieve. Please note, this is a hybrid position with time expected in their central London office weekly.

Blockchain Protocol Engineer
Oscar Associates Ltd
London
Fully remote
Mid - Senior
£70,000 - £95,000
RECENTLY POSTED

Protocol Engineer | Remote (Europe) | £70-95k DOE | Rust, L1 - L2 Infrastructure

We’re working with a Web3 infrastructure team building a next-generation blockchain protocol designed to support scalable decentralised applications and financial systems.

Following continued growth in their ecosystem, they are now looking to hire a Protocol Engineer to join their core engineering team.

Responsibilities:

  • Develop and maintain core blockchain protocol components
  • Contribute to node architecture, netwoking layers and system performance
  • Work on distributed systems and peer-to-peer networking infrastructure
  • Support development of scaling infrastructure including rollups and L2 architecture
  • Collaborate with smart contract, infrastructure, and research teams across the stack

Key Skills:

  • Strong programming experience in Rust, Go or C++
  • Experience building distributed systems/Back End infrastructure
  • Understanding of blockchain architecture and execution layers
  • Familiarity with Ethereum/EVM ecosystems
  • Experience working with concurrency, networking, and system optimisation

If this sounds like you, apply now for immediate consideration.

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.

Software Engineer Mid-Level
Michael James Associates
London
Remote or hybrid
Junior - Mid
Private salary
RECENTLY POSTED
+1

I am partnered with an InsurTech start-up at a time of growth due to success. My client is looking for an up-and-coming engineer - someone with a couple of years of real-world experience who’s ready to take ownership of their work and grow within a supportive, pragmatic team.

Most of your time will be spent handling change requests and feature work for clients: everything from small bugfixes to full features in our underwriting platform. You’ll be trusted to take problems, understand them, then build, test and deploy solutions - with the backing of a senior team that wants you to learn and succeed.

This is a great fit if you enjoy variety, value autonomy, and want to make a direct impact without layers of bureaucracy.

What You’ll Do

  • Extend and improve our underwriting platform for new and existing clients
  • Work across the stack - from Front End (React) to Back End (Go/Postgres)
  • Write and test code with confidence, delivering real value iteratively
  • Collaborate with other developers, product managers, and QA to deliver features
  • Help maintain UI and UX consistency across our products
  • Investigate, troubleshoot, and resolve issues in production systems

What We’re Looking For

Essential Skills & Experience

  • Able to communicate clearly, ask for help when stuck, and collaborate with the wider team
  • Curious, motivated, and proactive - someone who picks up tasks and sees them through
  • 1-3 years of professional software development experience
  • Comfortable working as a full-stack developer, covering Front End, Back End and databases
  • Practical experience with React
  • Experience with other
  • Professional experience with Golang
  • OR interested in learning Golang with experience in one or more of:
  • Node.js/TypeScript
  • Python
  • C#
  • Java
  • Comfortable working with RESTful APIs and CRUD-style Back End developmentF
  • Familiar with Git with a good understanding of source control
Salesforce Developer - SC Cleared - £ Excellent Rates - LONG TERM
Investigo Change Solutions
London
Remote or hybrid
Mid - Senior
Private salary
RECENTLY POSTED

Salesforce Developers x4 with OmniScripts and OmniStudio experience required on a contract basis for 6 months, working remotely with occasional travel to site based in London.

NOTE: You will need to have active SC Clearance for this role.

You will use the full arsenal of tools and components within Salesforce, including Flows, OmniScript, Apex and LWC. While you will report into your project leads, you can expect some level of client and project stakeholder interaction.

What you’ll be doing:

  • Salesforce Industry cloud Development and Deployment, using the Public Sector Solutions cloud solution
  • Working, promoting and ensuring others are working in accordance with the established quality plan.
  • Implementation of Salesforce Flows to a high standard (eg screen flows, triggered flows, API flows)
  • Implementation of Public Sector Solutions features and tools including OmniScript, FlexCards, Action Plans and Document Generation tooling.
  • Implementation of custom Apex classes and LWC components where needed
  • Driving the use of tools to improve productivity. Is concerned with maximizing performance from the point of view of exploiting benefits
  • Consolidating, conveying and implementing the functional, technical and methodology knowledge acquired in this or other projects he or she is involved in.
  • Ensuring the alignment of the solution with market trends in his or her area of expertise, incorporating best practices
  • Ensures sustainability of the solution over time
  • Supporting the delivery of balanced solutions (demand/viability).
  • Builds, tests and documents structural elements of the solution
  • Solves complex problems related to his/her area of expertise
  • Acts as an expert point of contact with the client’s equivalent areas
  • Defines work standards or methodologies adapted to the solution
  • Git version control of CI/CD deployment pipeline
  • Jira/Confluence or equivalent workflow/online documentation

What experience you’ll bring:

  • 5+ years of Salesforce Industry development experience preferred.
  • Public Sector Solutions preferred & Omnistudio must
  • Experience in day-to-day development/configuration in Salesforce Industries Cloud
  • Data Mappers (fka Data Raptors)
  • Omni Processes (fka Integration Procedures)
  • OmniScripts
  • Skills in Apex (triggers, batch, web services)
  • Integration Experience is benefcial (Mulesoft/APIGEE/Connected Apps)
  • Experience of JavaScript/Lightning components
  • Basic understanding of Apex sharing and security model
  • Experienced with Lightning Web Components
  • Skills in analysing and problem-solving issues
  • Experience of prioritising tasks and working to deadlines
  • Strong communication, time-management and multi-tasking skills
  • Automated testing experience (eg Provar, Selenium) - desirable
  • Able to understand large/complex systems and both review and pick-up existing implementations for in-life enhancement.
  • Able to work as part of a small Agile team, collaborating with and supporting others - flexing roles and responsibilities as needed.

Investigo is a leading specialist in SAP recruitment. As a trusted global partner, we work with clients on contract, permanent, and fixed-term opportunities. We are dedicated to delivering exceptional service and building lasting relationships with both candidates and clients in markets where we have genuine expertise and passion.

At Investigo, we are proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all, regardless of race, ethnicity, gender, disability, age, sexual orientation, or background.

Power Platform Developer
e-resourcing Limited
London
Hybrid
Mid
£50,000 - £55,000
RECENTLY POSTED

Power Platform Developer - Perm - London - Hybrid - £50,000 - £55,000 pa

Power Platform/Power App/Power BI/Canvas App/Model Driven App

Our client is looking for a Power Platform Developer to join their team in London on a hybrid basis. As a Power Platform Developer, you will act as the SME to design and deliver impactful solutions across our clients organisation.

In this role, you will design, develop and support custom applications and solutions using Microsoft Power Platform tools including PowerApps, Power Automate and Power BI.

Key responsibilities:

  • Create intuitive, user focused UIs in Power Apps (Canvas Apps and/or Model Driven Apps) and Power BI
  • Design and develop solutions using Power Apps, Power Automate and Power BI
  • Integrate custom applications with SQL, REST API’s and JavaScript
  • Implement best practice development standards

Experience:

  • Experience in developing, deploying and supporting custom applications and solutions
  • Experience utilising Microsoft Power Platform tools such as Power Apps (Canvas Apps and/or Model Driven Apps), Power Automate and Power BI
  • Professional experience with SQL, REST and JavaScript
  • MS Power Platform certifications such as PL-400 would be advantageous but not essential
  • Excellent communication and stakeholder management skills

Power Platform/Power App/Power BI/Canvas App/Model Driven App

If you feel you have the experience required, then please do apply!

Hedge Fund - Python Developer (Equities) - Trade life cycle - PnL - Kafka - Contract
Scope AT Limited
London
In office
Senior
Private salary
RECENTLY POSTED
+1

Our Hedge Fund client is looking for a Python Developer/Engineer Contract role

This team is responsible for the firms equity transaction data platform, including trade life cycle event processing, enrichment, and PnL calculations. The role is ideal for an engineer who enjoys building robust, high-throughput services and data pipelines in a fast-paced, delivery-focused environment.

Principal Responsibilities
Design and develop solutions for trade life cycle event processing, including corporate actions, expiries, and other post-trade events.
Build and operate Python-based services that perform large-scale data transformations and calculations.
Publish and distribute transaction and PnL data using Kafka, including AVRO-based schemas and streaming patterns.

Required Skills
Minimum of 6+ years of professional Python development experience, ideally in capital markets or a fintech firm.
Experience in finance: understanding of common financial asset classes; knowledge of equities corporate action processing, trade life cycle concepts, and/or P&L calculations is a strong plus.
Experience with Kafka (or equivalent streaming/messaging platforms) and schema-based event publishing (eg, AVRO).
Strong experience performing large-scale data calculations in Python using libraries like pandas, polars, and NumPy.
Experience building REST services using frameworks such as FastAPI and/or Flask.
Strong SQL skills and experience working with relational databases in production environments.
Hands-on experience with containerized deployments and modern infrastructure tooling (Docker, Kubernetes) and familiarity with cloud platforms.
Understanding of modern SDLC practices (testing strategy, CI/CD, release management, observability, and operational ownership).

Office based, 5 days per week.
Based in London.

Contract role inside IR35

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T24 Developer
VIQU Ltd
London
Hybrid
Mid - Senior
£400/day - £500/day
RECENTLY POSTED

T24 Developer - SC Cleared - London

A client is looking for an experienced SC Cleared T24 Developer specialising in Temenos Transact (formerly T24), delivering high-quality solutions across core banking transformation, integration, and upgrade programs.

Key Experience and Skills of the T24 Developer:

  • Must have active SC Clearance.
  • Must have experience within T24 development including payments, clearing and customisation.
  • Must have strong experience with TPH configuration.
  • Experience within an Agile or Scrum environment within the regulated sector.
  • Must have experience with SWIFT and payment processing interfaces.
  • Must have extensive knowledge of integration tools such as SWIFT Alliance Gateway, IBM MQ or SAP.
  • Strong experience with Confluence and SharePoint.

Key Responsibilities of the T24 Developer:

  • Configure, test and integrate Sprint backlog items within T24.
  • Ensure deliverables meet Definition of Done (DoD) and release governance standards.
  • Document solutions in Confluence and SharePoint.
  • Actively participate in Scrum meetings (Planning, Stand-ups, Reviews, Retrospectives)
  • Prepare T24 mapping documents.
  • Maintain non-live environments (run COBs, resolve memory issues, manage code conflicts)

The Security cleared T24 Developer is required onsite, 2 days per week in Central London.

Apply now to speak with VIQU IT in confidence. Or reach out to Matt Farrell via the VIQU IT website.

Do you know someone great? We’ll thank you with up to £1,000 if your referral is successful (terms apply).

Frequently asked questions
Our job board features a wide range of Backend Engineer positions in London, including roles in startups, scale-ups, and large enterprises across various industries such as fintech, e-commerce, and healthcare.
Common requirements include proficiency in languages such as Java, Python, Ruby, Go, and Node.js, as well as experience with databases like PostgreSQL, MongoDB, and technologies like RESTful APIs, microservices, and cloud platforms.
To apply, create an account on our job board, upload your updated CV, and submit applications directly through the job listings. Some employers may also allow direct contact or scheduling interviews via our platform.
Yes, many employers now offer remote or hybrid working arrangements. You can filter your job search by location and work type to find Backend Engineer roles that support remote or flexible working in London.
Backend Engineer positions in London range from junior to senior levels. Job descriptions specify experience requirements, so you can find roles suitable for entry-level candidates as well as highly experienced professionals.