1 to 25 of 29 Backend Developer Jobs in London

Senior Backend Developer (Java/Kotlin). Public Sector Contract. Transform Crime Data Management and Make a Difference. Up to £700 a day Inside IR35. 6 Month contract. Hybrid working from a hub of UK wide offices. Join the Electronic Monitoring team, a dedicated group focused on revolutionising … This Assignment: - Impactful Work: Contribute to a project that directly supports law enforcement and community safety. - Innovative Environment: Be at the forefront of developing backend infrastructure that processes crime data efficiently. - Professional Growth: Engage with cutting-edge technologies and methodologies, enhancing your skill set and career trajectory. Key Responsibilities ...

Senior Backend Developer – Node.js, TypeScript, Kafka - up to £70k Leading E-commerce Brand | Up to £70,000 | Hybrid (2 days/week in London) We’re partnering with a leading e-commerce business that’s scaling a modern, event-driven platform to support high transaction volumes and continued … growth. They’re looking for a Senior Backend Developer to join a highly capable engineering team working with Node.js, TypeScript and Kafka. This is a hands-on role where you’ll be building and evolving distributed backend services in a fast-paced, product-focused environment. The Role ...

Backend Developer/Software Engineer (TypeScript Node.js) London/WFH to £100k Are you a senior technologist looking for an opportunity to progress your career in a hands-on role where you can make an impact? You could be joining a scaling tech company that has developed … marketplace where institutions can place, discover and match option interests electronically - improving liquidity and efficiency for all participants as the platform scales. As a Backend Developer you will collaborate with a small team of technologists and successful entrepreneurs to design and implement intelligent solutions to business needs, with ...

Lead Backend Developer – Node.js, TypeScript, Kafka - up to £80k Leading E-commerce Brand | Up to £80,000 | Hybrid (2 days/week in London) A leading e-commerce client is looking for a Lead Backend Developer to help shape the technical direction of a highly scalable … role in architectural decisions while mentoring engineers and driving engineering standards across the team. The Role Lead the design and development of backend services using Node.js and TypeScript Own and evolve an event-driven architecture , leveraging Kafka for asynchronous communication Make key architectural decisions around scalability, performance and reliability ...

Senior Backend Developer - Node Crypto Payments Remote- (HQ: London) 50k-100k Plexus has a great opportunity with one of our long-term clients in the global payments space. They are an established next-generation payments company, allowing users to accept payment methods across 13 different blockchain networks. They … looking for senior backend developer to join the team to working with nodes to build out their platform further. Responsibilities: Design & build wallet backend services, a rchitect and implement scalable Node.js services for wallet operations Blockchain integration, w ork with full nodes, third-party RPC providers ...

Senior Backend Developer - Node Crypto Payments Remote- (HQ: London) 50k-100k Plexus has a great opportunity with one of our long-term clients in the global payments space. They are an established next-generation payments company, allowing users to accept payment methods across 13 different blockchain networks. They … looking for senior backend developer to join the team to working with nodes to buil click apply for full job details ...

Senior Backend Developer (.NET | AI-First SaaS Platform) Compensation: Competitive, based on location and experience Location: UK or Turkey (Hybrid – Office & Remote) Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale. … systems that plan, build, and operate security awareness and human risk workflows, supported by strong guardrails and observability. We're looking for a Senior Backend Developer who wants to build production-grade backend services that power these systems, working in a multinational, AI-first engineering team where ...

Backend Developer (Contract) Start Date: ASAP Contract Length: 12 months Rate: Up to £570 per day inside IR35. Location: Mostly remote, with occasional travel to Croydon Clearance: SC Clearance required About the Role We're looking for an experienced Backend Developer to join a high-impact … project delivering scalable, reliable backend services. You'll work with modern Java-based technologies in a collaborative, delivery-focused environment, contributing to systems that are critical, secure, and built to scale. This is a contract role offering long-term stability, flexibility through remote working, and the opportunity to work ...

Backend Developer (Contract) Start Date: ASAP Contract Length: 12 months Rate: Up to £570 per day inside IR35. Location: Mostly remote, with occasional travel to Croydon Clearance: SC Clearance required About the Role We're looking for an experienced Backend Developer to join a high-impact … project delivering scalable, reliable backend services click apply for full job details ...

Senior Backend Developer Salary: Up to £90,000 per annum Client: Leading Data Centre Provider We're working with a well-established Data Centre Provider to recruit a highly experienced Senior Backend Developer. This is a remote role open to UK-based candidates, offering the chance … work on large-scale systems that support critical national infrastructure. This is an excellent opportunity for a seasoned backend engineer with deep expertise in Node.js and TypeScript, who enjoys architecting scalable solutions and working with modern cloud technologies. You'll be responsible for designing and building high-performance backend ...

client is seeking an experienced Senior Backend Developer to support a major digital programme delivering secure, scalable backend systems. This role focuses on building modern cloud-based microservices, APIs, and data processing services in a highly collaborative and delivery-driven environment. You will work closely with multidisciplinary … analysts, and operational teams to design and deliver robust, reusable solutions that can be leveraged across multiple programmes. Key Responsibilities Design, develop, and maintain backend services within a microservices architecture. Build secure, scalable APIs for data exchange between systems. Develop and deploy cloud-native services using AWS infrastructure. Build ...

Senior Backend Developer Salary: Up to £90,000 per annum Client: Leading Data Centre Provider We're working with a well-established Data Centre Provider to recruit a highly experienced Senior Backend Developer. This is a remote role open to UK-based candidates, offering the chance ...

Role: Backend Software Developer Salary: £100,000 P/A + Comps Location: London (Hybrid/Flexible working) Client: Start up/Scale Up Are you a Python expert ready to build cutting-edge systems powering real-world AI innovation? Join one of London's most exciting … startups, where we're scaling fast and solving complex problems at the intersection of technology, data, and intelligence. We're looking for a Backend Developer who thrives in dynamic environments - someone who loves clean code, scalable architecture, and being part of a team that's pushing boundaries. What ...

Python Developer Reliability Join a leading global investment management firm at the forefront of technology innovation. Were searching for a talented Python Engineer to join our Risk & Market Access division. At our firm, we harness a diverse portfolio of systematic and quantitative strategies, striving to deliver high-quality, uncorrelated ...

Position: Senior Back End Developer Location: UK – Fully Remote Salary: £60,000 - £80,000 We’re working with a forward-thinking technology-led organisation that’s looking to hire a Senior Back End Developer to join one of their high-performing engineering teams. This is a great opportunity … someone who is passionate about building scalable software, enjoys mentoring others, and wants to play a key role in shaping backend architecture within a modern, agile environment. The Business places a strong emphasis on continuous improvement both technically and culturally and encourages engineers to explore new technologies, challenge existing ...

Python Developer Reliability Join a leading global investment management firm at the forefront of technology innovation. Were searching for a talented Python Engineer to join our Risk & Market Access division. At our firm, we harness a diverse portfolio of systematic and quantitative strategies, striving to deliver high-quality, uncorrelated ...

skills can be applied meaning a vast array of opportunities are now available to you. Examples of some of these are listed below: - Junior Developer Website Support Developer Junior Web Developer Content Editor Wordpress Developer Junior Software Developer Junior Front or Back End Development Development ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

services millions of people love. And we do it all right here at Sky. What you'll do Design and implement scalable APIs and backend services, primarily in Scala, to integrate ML models into production systems and deliver personalised experiences. Real time data processing and gRPC microservices (Typelevel stack … cloud technology - even if you haven't worked extensively in ML before. Demonstrated experience designing, implementing, deploying, and maintaining production-grade APIs and backend services, including responsibility for reliability, performance, and on-call support. Hands-on experience working with data processing frameworks and distributed systems used to ingest, process ...

Senior Software Engineer Location: London (x3 days a week onsite) Salary: Up to £80k DOE Type: Perm Job Description We are looking for a passionate Senior Java Engineer in London to lead the design and ...

Senior Back-End Developer – Java Contract duration: 12 months Location: London (hybrid working) Pay: £700-800/day (PAYE) As a Senior Back-End Developer you will be instrumental in designing, developing and maintaining the back-end of complex microservices architecture. Your expertise in Java Microservice development will ...

Java Back-End Developer (Azure/AWS) – Contract | London (Hybrid) Contract: 12+ months IR35: Outside IR35 Location: London (Hybrid – 3 days onsite) We are supporting a consultancy delivering enterprise-scale technology programmes for a major client. They are seeking an experienced Java Back-End Developer with strong cloud ...