1 to 25 of 38 Backend Developer Jobs in London

Backend Engineer VC-backed Tech : Node/MongoDB Fully remote in the UK Have you worked for a start-up or scale-up software company? Are you passionate about solving clients' real problems and making a difference in their business? Do you have 5+ years' commercial development experience … only agenda is making sure everything they do is to the best of their abilities. They are looking for a pro-active, analytical Backend Engineer to join a growing team. You will have an entrepreneurial and empathetic mindset that propels you to commit to delving deep into the user ...

Senior Backend Engineer VC-backed Tech : Node/MongoDB Fully remote in the UK Have you worked for a start-up or scale-up software company? Are you passionate about solving clients' real problems and making a difference in their business? Do you have 5+ years' commercial development experience … only agenda is making sure everything they do is to the best of their abilities. They are looking for a pro-active, analytical Senior Backend Engineer to join a growing team. You will have an entrepreneurial and empathetic mindset that propels you to commit to delving deep into ...

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 ...

Role: Senior Backend Developer Type:Fixed Term Employment (1year) Location: UK (Remote) Client:Tavant Technologies Mandatory Skills - Java, Spring Boot Experience 8+ years Job Description We are looking for a Senior Backend Developer with strong experience in Java, Spring Boot, microservices architectures to design, build … scale backend systems in a cloud-native environment. The role requires a hands-on engineer who can deliver high-quality services, collaborate across teams, and contribute to architectural and design decisions. Roles & Responsibilities Design, develop, and maintain scalable backend services using Java and Spring Boot Build and support ...

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 node 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 node to build click apply for full job details ...

Role: Senior Backend Developer Type:Fixed Term Employment (1year) Location: UK (Remote) Client:Tavant Technologies Mandatory Skills - Java, Spring Boot Experience 8+ years Job Description We are looking for a Senior Backend Developer with strong experience in Java, Spring Boot, microservices architectures to design, build … scale backend systems in a cloud-native environment click apply for full job details ...

Senior Backend Engineer 📍 London (Hybrid) 🚀 Early-Stage | AI Platform | Enterprise-Grade Systems We’re partnering with an ambitious early-stage AI company building a challenge-based interview intelligence platform. The product replaces CV-noise with real signal — evidence from real work and real human capability. They’re in full … build mode toward launch. Small team. High standards. High ownership. No corporate theatre. They’re hiring a Senior Backend Engineer to build the enterprise backbone of the platform — high-concurrency APIs, event-driven systems, and reliability foundations that transform complex hiring inputs into secure, trusted, GDPR-safe outputs. ...

Senior DotNet Backend Developer – WealthTech SaaS Platform – London, UK – 6 Month Contract (Outside IR35) A global wealth management technology provider is seeking multiple DotNet Backend Developers to contribute to its core enterprise SaaS platform used by private banks and wealth management firms. We’re looking for developers … wealth management. Backed Development Work across the full software development lifecycle (SDLC), from requirement gathering to testing and deployment Design and develop robust backend services using .NET Core/C# Build and maintain scalable RESTful APIs and collaborate with front-end developers on UI integration Develop and maintain Azure ...

Senior Backend Engineer, London, £60,000 - £75,000 + Benefits A Senior Backend Engineer is needed to join an ambitious and fast-scaling technology company operating within a regulated market. This role is based in central London 4 days a week on-site. As their product suite evolves … customer demand increases, they are investing in senior engineering talent to strengthen backend capability and long-term platform resilience. This hire is central to that journey, offering meaningful equity and the opportunity to influence architectural decisions at a critical stage of growth. The Senior Backend Engineer (Full Stack ...

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 ...

operate like a top-tier creative engineering studio: small team, high taste, high ownership, no corporate theatre. We’re hiring a Senior Backend Engineer to build the enterprise backbone: high-concurrency APIs, event-driven systems, and reliability foundations that turn messy hiring inputs into trusted signal : fast, secure, GDPR ...

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 ...

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 ...

scientists and chemists. All positions at CheMastery come with an extraordinary level of freedom to showcase your skill . Description The position as a Backend Python Developer is a permanent full-time position. As a Python Developer you will have be part of a brilliant software ...

Senior Backend Engineer/Head of Backend Development (Python/AWS) Fintech | NYC (Remote) | No C2C | Full-time role Compensation : £90,000–£120,000 (negotiable for star talent upon tech test) We are working with a well-funded fintech platform transforming how complex financial data flows across global … products. ● Shape the architecture, cloud strategy, and engineering culture of a venture-backed fintech at an early stage. The Role This is a senior backend role focused on designing and scaling the core engine that powers ingestion, validation, and distribution workflows. The environment demands production-grade reliability, security ...

Lead Backend Software Developer (Contract) London, Outside IR35 £500-£600 per day This is an exciting opportunity to join a fast-moving engineering function at a pivotal moment of technical uplift. They are investing heavily in strengthening their core platforms and commercial data systems, creating a strong mandate … step in, lead, and make an immediate impact. The Company They are a growing digital gaming organisation operating across multiple markets, currently modernising their backend ecosystem. With distributed teams across the UK and Europe, they are building scalable platforms that support a variety of customer-facing and internal products. ...

Strong foundation in software development with C# and TypeScript. - Experience with AI/LLM concepts (e.g., prompt engineering, RAG). - Analytical mindset for assessing sufficiency (relevance, completeness, freshness) and mitigating risks like hallucinations. - Focus on ...

Strong foundation in software development with C# and TypeScript. - Experience with AI/LLM concepts (e.g., prompt engineering, RAG). - Analytical mindset for assessing sufficiency (relevance, completeness, freshness) and mitigating risks like hallucinations. - Focus on ...

Cloud Backend Engineer (Python/AWS/Kubernetes) 🚀 📍 London (Hybrid) 📅 ASAP - End May 💰 Competitive Day Rate – Outside IR35 We’re supporting a highly PE-backed Professional Services organisation building cloud-native, AI-enabled applications within tax advisory. This is a hands-on engineering role sitting within a cross-functional … delivery squad. You'll be building backend APIs and deploying them into a modern AWS + Kubernetes environment. 🔑 The Role • Building backend APIs in Python (FastAPI ideally) • Working with PostgreSQL • Deploying services into AWS (EKS preferred) • Managing container workloads in Kubernetes • Building infrastructure with Terraform • Implementing CI/ ...

Back-End Developer (Go) 📍 Location: London (2 days onsite) 📅 Contract: 12 Months (Extension Possible) 💼 Experience: 3–5+ Years About the Role We are looking for an experienced Back-End Developer with strong expertise in Go (Golang) to build scalable, high-performance backend systems. You will design APIs … deployed on AWS cloud infrastructure. This role is ideal for someone passionate about data-driven systems, cloud-native architecture, and performance optimization. Key Responsibilities Backend Development Develop and maintain scalable backend services using Go (Golang). Design and implement RESTful APIs and GraphQL endpoints. Build APIs for data ...