36 back end developer jobs found in London

Job Summary We are seeking an experienced Java Back-end Developer specialised in cloud platforms such as Azure and AWS to join our dynamic development team. The successful candidate will be responsible for designing, developing, and maintaining scalable back-end services and APIs, ensuring seamless integration with front-end applications and third-party systems. This role offers an exciting opportunity to work on innovative projects within a collaborative environment, contributing to the realisation of cutting-edge solutions that meet business needs. Responsibilities Liaise with fellow developers Designing and implementing microservices which use the spring boot framework. Working in compliance with the full Software Development Life Cycle. Connecting microservices to interact with databases. Understanding of how streaming technologies work such as Kafka. Build Azure/AWS pipelines Identifying and finding solutions to bugs. Ensure you've written...

Job Summary We are seeking an experienced Java Back-end Developer specialised in cloud platforms such as Azure and AWS to join our dynamic development team. The successful candidate will be responsible for designing, developing, and maintaining scalable back-end services and APIs, ensuring seamless integration with front-end applications and third-party systems. This role offers an exciting opportunity to work on innovative projects within a collaborative environment, contributing to the realisation of cutting-edge solutions that meet business needs. Responsibilities Liaise with fellow developers Designing and implementing microservices which use the spring boot framework. Working in compliance with the full Software Development Life Cycle. Connecting microservices to interact with databases. Understanding of how streaming technologies work such as Kafka. Build Azure/AWS pipelines Identifying and finding solutions to bugs. Ensure you've written...

iOS Engineer - Contract (Outside of IR35) As an iOS Developer, you will have the opportunity to build and lead solutions that engage millions of sports fans worldwide. Working with a wide range of data sources and native technologies, building bespoke UI experiences for sports fans. At Pulselive, we pride ourselves in providing a collaborative environment that ensures we produce leading products across web and native applications. Contractor Outside of IR35 Day Rate: £400 - £500 per day   Responsibilities Being a self-sufficient individual contributor, breaking down work into manageable pieces, calling out blockers and dependencies and delivering solution in a timely manner Managing code releases to internal environments (dev, test); may also need to manage code release to external environments (production) Producing code to a high standard that not only functions correctly but can be...

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Data Engineer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a...

iOS Engineer - Contract (Outside of IR35) As an iOS Developer, you will have the opportunity to build and lead solutions that engage millions of sports fans worldwide. Working with a wide range of data sources and native technologies, building bespoke UI experiences for sports fans. At Pulselive, we pride ourselves in providing a collaborative environment that ensures we produce leading products across web and native applications. Contractor Outside of IR35 Day Rate: £400 - £500 per day   Responsibilities Being a self-sufficient individual contributor, breaking down work into manageable pieces, calling out blockers and dependencies and delivering solution in a timely manner Managing code releases to internal environments (dev, test); may also need to manage code release to external environments (production) Producing code to a high standard that not only functions correctly but can be...

iOS Engineer - Contract (Outside of IR35) As an iOS Developer, you will have the opportunity to build and lead solutions that engage millions of sports fans worldwide. Working with a wide range of data sources and native technologies, building bespoke UI experiences for sports fans. At Pulselive, we pride ourselves in providing a collaborative environment that ensures we produce leading products across web and native applications. Contractor Outside of IR35 Day Rate: £400 - £500 per day   Responsibilities Being a self-sufficient individual contributor, breaking down work into manageable pieces, calling out blockers and dependencies and delivering solution in a timely manner Managing code releases to internal environments (dev, test); may also need to manage code release to external environments (production) Producing code to a high standard that not only functions correctly but...

iOS Engineer - Contract (Outside of IR35) As an iOS Developer, you will have the opportunity to build and lead solutions that engage millions of sports fans worldwide. Working with a wide range of data sources and native technologies, building bespoke UI experiences for sports fans. At Pulselive, we pride ourselves in providing a collaborative environment that ensures we produce leading products across web and native applications. Contractor Outside of IR35 Day Rate: £400 - £500 per day   Responsibilities Being a self-sufficient individual contributor, breaking down work into manageable pieces, calling out blockers and dependencies and delivering solution in a timely manner Managing code releases to internal environments (dev, test); may also need to manage code release to external environments (production) Producing code to a high standard that not only functions correctly but...

We are currently seeking an experienced Business Analyst to support major strategic transformation initiatives within our Corporate & Investment Banking division. This role focuses on facilitating AI-led transformation initiatives within Corporate & Investment Banking (CIB), optimizing operational processes across various banking sectors Operations Business Analyst London – 3 days onsite £550 - 650 p/d Inside IR35   emagine is a high-end professional services consultancy and solutions firm. Specialising in delivering business and technology services to the financial services sector, we power progress, solve challenges, and achieve real results through tailored, high‑end consulting solutions. We have built a culture of openness and integrity through genuine relationships and strong partnerships. This enables us to remain uncompromising in our commitment to delivering exceptional service for our clients. Equally, we foster a positive...

NS&I is one of the largest savings organisations in the UK with more than 24 million customers and over £218 billion invested. We are both a government department and an Executive Agency of the Chancellor of the Exchequer. Our origins can be traced back more than 150 years to 1861.   A small company with a big reach. We care for colleagues, respect one another, invest in our people and manage talent effectively.   This role is subject to Baseline Personnel Security Standard and financial credit checks.   As a M365 Product Manager , your main responsibilities will be: Lead the M365 product road map, driving its adoption and delivery. Ensuring it aligns with business goals. Manage product lifecycle, help build the current roadmap into an actionable plan collaborating with stakeholders to deliver value. Translating technical roadmaps into user-centric experiences and ensuring continued improvement. Engage with internal...

Job Reference hbuk/TP/158/2315 Contract Type Day Rate Contractor Closing Date 14 March, 2026 Job Category Tech, Data and Digital Business Unit Handelsbanken Digital (UKC) Location London or Manchester, United Kingdom Posted on 12 February, 2026   Main Responsibilities  Discovery and Research Lead discovery across the current Wealth Digital Platform, including understanding existing customer journeys, touchpoints, constraints, and dependencies. Plan and conduct qualitative research with Wealth customers to understand how they currently view portfolios, funds, and performance, and where pain points and unmet needs exist. Conduct competitive research on current wealth digital platforms to inform future state Synthesize research findings into clear insights, problem statements, and opportunity areas that align customer needs with business objectives. Collaborate with internal stakeholders across Wealth,...

Security Risk & Control - Testing - Contractor About CLS: CLS is the trusted party at the centre of the global FX ecosystem. Utilized by thousands of counterparties, CLS makes FX safer, smoother and more cost effective. Trillions of dollars ' worth of currency flows through our systems each day. Created by the market for the market, our unrivalled global settlement infrastructure reduces systemic risk and provides standardization for participants in many of the world 's most actively traded currencies. We deliver huge efficiencies and savings for our clients: in fact, our approach to multilateral netting shrinks funding requirements by over 96% on average, so clients can put their capital and resources to better use. CLS products are designed to enable clients to manage risk most effectively across the full FX lifecycle - whether through more efficient processing tools or market intelligence derived from the largest single source of FX executed data available to the...

We are currently seeking an experienced Business Analyst to support major strategic transformation initiatives within our Corporate & Investment Banking division. This role focuses on facilitating AI-led transformation initiatives within Corporate & Investment Banking (CIB), optimizing operational processes across various banking sectors Operations Business Analyst London - 3 days onsite £550 - 650 p/d Inside IR35 emagine is a high-end professional services consultancy and solutions firm. Specialising in delivering business and technology services to the financial services sector, we power progress, solve challenges, and achieve real results through tailored, high xe2 end consulting solutions. We have built a culture of openness and integrity through genuine relationships and strong partnerships. This enables us to remain uncompromising in our commitment to delivering exceptional service for our clients. Equally, we foster a positive and inclusive...

Technology Risk & Control - Testing - Contractor About CLS: CLS is the trusted party at the centre of the global FX ecosystem. Utilized by thousands of counterparties, CLS makes FX safer, smoother and more cost effective. Trillions of dollars ' worth of currency flows through our systems each day. Created by the market for the market, our unrivalled global settlement infrastructure reduces systemic risk and provides standardization for participants in many of the world 's most actively traded currencies. We deliver huge efficiencies and savings for our clients: in fact, our approach to multilateral netting shrinks funding requirements by over 96% on average, so clients can put their capital and resources to better use. CLS products are designed to enable clients to manage risk most effectively across the full FX lifecycle - whether through more efficient processing tools or market intelligence derived from the largest single source of FX executed data available to the...

The University of London The University of London is the UK’s largest provider of international distance and online learning and the convenor of a federation of 17 London-based universities, many of which are among the highest-ranking universities in the world. Collectively the federation represents a cohort of some 250,000 learners and 50,000 academic and professional services staff. Within this cohort are around 40,000 University of London students who study programmes which are developed and delivered in partnership with our 17 federation members. The University of London is also home to the School of Advanced Study, the national centre for the humanities and a champion for the arts and humanities. Although proudly rooted in London, our community and impact are global. Our passion for increasing access to education and mobilising the collective power and expertise of the federation is central to our ability to transform lives around the world and...

The University of London The University of London is the UK’s largest provider of international distance and online learning and the convenor of a federation of 17 London-based universities, many of which are among the highest-ranking universities in the world. Collectively the federation represents a cohort of some 250,000 learners and 50,000 academic and professional services staff. Within this cohort are around 40,000 University of London students who study programmes which are developed and delivered in partnership with our 17 federation members. The University of London is also home to the School of Advanced Study, the national centre for the humanities and a champion for the arts and humanities. Although proudly rooted in London, our community and impact are global. Our passion for increasing access to education and mobilising the collective power and expertise of the federation is central to our ability to transform lives around the world and...

The University of London The University of London is the UK’s largest provider of international distance and online learning and the convenor of a federation of 17 London-based universities, many of which are among the highest-ranking universities in the world. Collectively the federation represents a cohort of some 250,000 learners and 50,000 academic and professional services staff. Within this cohort are around 40,000 University of London students who study programmes which are developed and delivered in partnership with our 17 federation members. The University of London is also home to the School of Advanced Study, the national centre for the humanities and a champion for the arts and humanities. Although proudly rooted in London, our community and impact are global. Our passion for increasing access to education and mobilising the collective power and expertise of the federation is central to our ability to transform lives around the world and...

20 hours ago Senior Software Engineering Contractor About the job   Aspect Capital is an award-winning systematic hedge fund based in London, UK that manages over $8 billon of client assets, where technology plays a critical role in the success of the business.   We are looking for a Senior Software Engineering Contractor to join our Software Development team to work on our Software Development platform for 12 months.   Job requirements: 5+ years of enterprise Java development experience Experience with managing technical projects e.g. planning timelines, milestones and deliverables Strong enterprise Java (with Spring) experience Working proficiency of Python and Javascript Experience with Maven, Docker and CI pipelines   Job responsibilities: Aspect’s Software Development Team are a team of 12 who develop and support the main trading software for Aspect. This ranges from front office...

Senior Java/React Full Stack Developer Location: London or Newcastle, UK (Hybrid - ~1 day per week in office / onsite) Contract: Contract - 6 months with view to extend Day Rate: £550 - £600 per day - Outside IR35 About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy. We work with organisations to improve software quality, reliability, and delivery outcomes through modern engineering and testing practices. Our teams focus on reducing risk in complex systems by improving automated testing, architectural clarity, and developer feedback loops.   About the Role We are seeking a consultative Senior Software Developer in Test with hands-on experience in React and Java to join Appvia as a hands-on testing and quality engineering consultant. This role is centred on modernising automated test strategies for Java/React-based applications, moving away from brittle, heavyweight end-to-end testing towards more...

Job Introduction Main Responsibilities As the Salesforce Architect this role will work closely with the Salesforce Lead Architect to help set the strategic direction and be accountable and lead the design, development and day to day operations of the CRM platform(Salesforce and Other customer platforms) by partnering with senior stakeholders across the business identifying opportunities to deliver business and customer value through the extension of CRM services. Responsible for the end-to-end design of solutions on the Salesforce platform and other CRM technologies. Own the architecture of the end-to-end solution. Lead and mentor the development team in designing solutions for our strategic programmes. Completion of solution architecture documents and artefacts in line with organisation standards. Enforce best practices, development standards and ensure quality delivery of enterprise solutions. Help in driving the application of DevOps tools and...

Reapit – Who are we? Reapit is the original, end-to-end business technology provider for estate agencies of all sizes. We’ve been helping sales and lettings agents to build relationships and grow their businesses for more than 25 years. Our technology connects property professionals in Europe, the Middle East, Australia, and New Zealand with buyers, sellers, tenants and landlords to power the relationships that change lives. In the United Kingdom and Ireland, Reapit’s market-leading technology product suite provides estate and lettings agents with powerful tools covering sales, lettings, property management, block management, client accounts and analytics, underpinned by a robust, security infrastructure. What you’ll be doing Reporting to the Global Director of Product Design, you’ll be leading design for both an existing project building a responsive CRM product as well as a new consumer-facing product for owners and tenants....