51 to 75 of 83 Backend Developer Jobs in London

Senior Back End Developer/Engineer (TypeScript Node.js) Remote UK to £80k Are you a senior, hands-on Back End Developer looking for an opportunity to take ownership and progress your career at a scaling tech company? You could be joining a growing games company that combines state of the art technology, gaming and luxury fashion. As a … Senior Back End Developer you'll join the team as they scale the product to support millions of users. You'll design and deliver high-quality, maintainable backend code and features using TypeScript and Node.js that is aligned with established codebase architectural standards and covered by tests as well as supporting backend system performance and reliability, helping … design, implement and extend robust APIs and microservices supporting gameplay, user management, platform and content management systems, collaborating with product and game teams to ensure alignment of features with backend architecture and with DevOps to ensure uptime, observability and deployment reliability. This is a senior role where you'll take ownership of complex systems and proactively address potential performance More ❯

Senior Backend Software Engineer London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. Were building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing your … code have a real-world impact, this is a chance to build something meaningful from the ground up. The Role Were looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. Youll work closely with product, frontend, and AI teams to design, build, and scale backend systems that … interactions. Youll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. What Youll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Senior Backend Software Engineer London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. Were building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing your … code have a real-world impact, this is a chance to build something meaningful from the ground up. The Role Were looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. Youll work closely with product, frontend, and AI teams to design, build, and scale backend systems that … interactions. Youll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. What Youll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Senior Backend Software Engineer – London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We’re building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing … your code have a real-world impact, this is a chance to build something meaningful from the ground up. 💡 The Role We’re looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You’ll work closely with product, frontend, and AI teams to design, build, and scale backend … ll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. 🔧 What You’ll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Senior Backend Software Engineer – London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We’re building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing … your code have a real-world impact, this is a chance to build something meaningful from the ground up. 💡 The Role We’re looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You’ll work closely with product, frontend, and AI teams to design, build, and scale backend … ll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company. 🔧 What You’ll Be Doing Architect, design, and build backend applications using Node.js (TypeScript) and NestJS . Develop microservices and event-driven systems with asynchronous communication patterns. Write clean, maintainable, and well-tested code (unit + integration). Design More ❯

Back End Developer Home-based within the UK About Us At Family Action, we transform lives by providing practical, emotional and financial support to those experiencing poverty, disadvantage and social isolation. Since 1869, weve been building stronger families, and today, we work with over 60,000 families across more than 190 services. We also support thousands more through national … programmes and grants, helping everyone find the tools to overcome challenges and thrive. Were now looking for a Back End Developer to join us on a full-time, permanent basis, working 37 hours per week. The Benefits - Salary of £43,042 per annum (inclusive of £1,044 market supplement and £480 home working allowance) - An annual paid leave entitlement … youre someone who loves solving problems, building elegant solutions and being part of a mission that really matters, read on and apply today! The Role As a Back End Developer, youll design, build, and run secure, scalable backend services that power our web applications and keep things running smoothly behind the scenes. Specifically, youll develop APIs and data More ❯

Back End Developer Home-based within the UK About Us At Family Action, we transform lives by providing practical, emotional and financial support to those experiencing poverty, disadvantage and social isolation.Since 1869, we’ve been building stronger families, and today, we work with over 60,000 families across more than 190 services. We also support thousands more through national … programmes and grants, helping everyone find the tools to overcome challenges and thrive.We’re now looking for a Back End Developer to join us on a full-time, permanent basis, working 37 hours per week. The Benefits - Salary of £43,042 per annum (inclusive of £1,044 market supplement and £480 home working allowance)- An annual paid leave entitlement … re someone who loves solving problems, building elegant solutions and being part of a mission that really matters, read on and apply today! The Role As a Back End Developer, you’ll design, build, and run secure, scalable backend services that power our web applications and keep things running smoothly behind the scenes.Specifically, you’ll develop APIs and More ❯

About Us At Xelix, we work with some of the world's largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is More ❯

cutting-edge AI/ML solutions aimed at transforming healthcare. This is a 6-month contract , inside IR35 , offering hybrid working (3 days onsite). Key Responsibilities Develop robust backend systems for Python-based web applications Integrate AI/ML components with data, infrastructure, and frontend systems Deliver high-quality, well-documented, and thoroughly tested code Monitor and enhance … performance of tools and services Collaborate across technical teams to build end-to-end data pipelines Essential Skills Proven experience in Python backend development (e.g. FastAPI) Strong cloud-native development skills, ideally with Google Cloud Familiarity with DevOps practices, automated testing (e.g. pytest), and agile methodologies Passion for healthcare innovation and continuous learning Bonus: Background in biological sciences or More ❯

cutting-edge AI/ML solutions aimed at transforming healthcare. This is a 6-month contract , inside IR35 , offering hybrid working (3 days onsite). Key Responsibilities Develop robust backend systems for Python-based web applications Integrate AI/ML components with data, infrastructure, and frontend systems Deliver high-quality, well-documented, and thoroughly tested code Monitor and enhance … performance of tools and services Collaborate across technical teams to build end-to-end data pipelines Essential Skills Proven experience in Python backend development (e.g. FastAPI) Strong cloud-native development skills, ideally with Google Cloud Familiarity with DevOps practices, automated testing (e.g. pytest), and agile methodologies Passion for healthcare innovation and continuous learning Bonus: Background in biological sciences or More ❯

cutting-edge AI/ML solutions aimed at transforming healthcare. This is a 6-month contract , inside IR35 , offering hybrid working (3 days onsite). Key Responsibilities Develop robust backend systems for Python-based web applications Integrate AI/ML components with data, infrastructure, and frontend systems Deliver high-quality, well-documented, and thoroughly tested code Monitor and enhance … performance of tools and services Collaborate across technical teams to build end-to-end data pipelines Skills Required Strong Python backend development experience (FastAPI, Flask, Django). Proven track record of delivering production-grade software at scale. Experience with Docker and containerisation. Familiarity with cloud deployment and troubleshooting cloud-related issues. Comfortable working in modern cloud-native environments with More ❯

who enjoys solving complex problems and building clean, efficient systems in the cloud, this role is for you. What You’ll Do Design and develop robust, scalable, and maintainable backend services. Contribute to architectural decisions and suggest new tools, frameworks, or best practices. Collaborate closely with cross-functional teams including Product, Design, and Delivery. Participate in code reviews, pair More ❯

who enjoys solving complex problems and building clean, efficient systems in the cloud, this role is for you. What You’ll Do Design and develop robust, scalable, and maintainable backend services. Contribute to architectural decisions and suggest new tools, frameworks, or best practices. Collaborate closely with cross-functional teams including Product, Design, and Delivery. Participate in code reviews, pair More ❯

who enjoys solving complex problems and building clean, efficient systems in the cloud, this role is for you. What You’ll Do Design and develop robust, scalable, and maintainable backend services. Contribute to architectural decisions and suggest new tools, frameworks, or best practices. Collaborate closely with cross-functional teams including Product, Design, and Delivery. Participate in code reviews, pair More ❯

who enjoys solving complex problems and building clean, efficient systems in the cloud, this role is for you. What You’ll Do Design and develop robust, scalable, and maintainable backend services. Contribute to architectural decisions and suggest new tools, frameworks, or best practices. Collaborate closely with cross-functional teams including Product, Design, and Delivery. Participate in code reviews, pair More ❯

collaborative, forward-thinking environment where your contributions will have real impact. Were looking for a Back End Engineer to join our London-based team and help build scalable, maintainable backend services that power seamless customer experiences. Youll be part of a collaborative, agile environment with a strong engineering culture and a modern tech stack. What Youll Be Doing Designing … and building robust backend services using Python and AWS Collaborating with cross-functional teams including Product, Design, and Sales Participating in code reviews, pair programming, and technical presentations Contributing to continuous improvement of Agile processes and engineering practices Tech Stack Python | FastAPI | AWS | Django | PostgreSQL | OpenSearch | Kubernetes | Helm | Terraform | GitHub What Were Looking For Strong Python development experience (any More ❯

collaborative, forward-thinking environment where your contributions will have real impact. Were looking for a Back End Engineer to join our London-based team and help build scalable, maintainable backend services that power seamless customer experiences. Youll be part of a collaborative, agile environment with a strong engineering culture and a modern tech stack. What Youll Be Doing Designing … and building robust backend services using Python and AWS Collaborating with cross-functional teams including Product, Design, and Sales Participating in code reviews, pair programming, and technical presentations Contributing to continuous improvement of Agile processes and engineering practices Tech Stack Python | FastAPI | AWS | Django | PostgreSQL | OpenSearch | Kubernetes | Helm | Terraform | GitHub What Were Looking For Strong Python development experience (any More ❯

forward-thinking environment where your contributions will have real impact. We’re looking for a Back End Engineer to join our London-based team and help build scalable, maintainable backend services that power seamless customer experiences. You’ll be part of a collaborative, agile environment with a strong engineering culture and a modern tech stack. What You’ll Be … Doing Designing and building robust backend services using Python and AWS Collaborating with cross-functional teams including Product, Design, and Sales Participating in code reviews, pair programming, and technical presentations Contributing to continuous improvement of Agile processes and engineering practices Tech Stack Python | FastAPI | AWS | Django | PostgreSQL | OpenSearch | Kubernetes | Helm | Terraform | GitHub What We’re Looking For Strong Python More ❯

forward-thinking environment where your contributions will have real impact. We’re looking for a Back End Engineer to join our London-based team and help build scalable, maintainable backend services that power seamless customer experiences. You’ll be part of a collaborative, agile environment with a strong engineering culture and a modern tech stack. What You’ll Be … Doing Designing and building robust backend services using Python and AWS Collaborating with cross-functional teams including Product, Design, and Sales Participating in code reviews, pair programming, and technical presentations Contributing to continuous improvement of Agile processes and engineering practices Tech Stack Python | FastAPI | AWS | Django | PostgreSQL | OpenSearch | Kubernetes | Helm | Terraform | GitHub What We’re Looking For Strong Python More ❯

Senior Backend/Full Stack Ruby Developer – Profitable SaaS Scale-Up | Up to £85k + Excellent Benefits | Hybrid (London) I am working with a long term client of Opus, who is a profitable, investment-backed SaaS company with serious growth plans! We’re hiring Backend-focused Ruby Developers or Full Stack Ruby Developers with modern JavaScript experience More ❯

Senior Backend/Full Stack Ruby Developer – Profitable SaaS Scale-Up | Up to £85k + Excellent Benefits | Hybrid (London) I am working with a long term client of Opus, who is a profitable, investment-backed SaaS company with serious growth plans! We’re hiring Backend-focused Ruby Developers or Full Stack Ruby Developers with modern JavaScript experience More ❯

Back End Developer - New cutting edge AI product Start-up Scale up - growth Leading Technology AI Brand SaaS - Platform based Technology Services London/City Attractive salary + equity package Our client an industry AI technology leader is currently looking for a Back End Developer to work with the technology team to guide the provision of Software Development More ❯

Backend Engineer (Kotlin) – Hybrid (London) – Up to £95k 💰 Join a fast-growing cleantech company as a Backend Kotlin Engineer that is driving the global shift to clean, affordable energy through an integrated hardware and software smart-grid platform focused on residential EV charging. By leveraging data, AI, and strong industry partnerships, they connect cars, chargers, people, and energy … providers to place consumers at the heart of the energy transition. 🚀 What You'll Do: 🧱 Contribute to scalable backend infrastructure built in Kotlin ✅ Write clean, maintainable, tested code in production 🧠 Shape tech strategy and architecture with new ideas and tools 🤝 Work closely with Product Owners and team members to deliver value 👨‍🏫 Mentor junior developers and support their growth 🧠 What More ❯

Backend Engineer (Kotlin) – Hybrid (London) – Up to £95k 💰 Join a fast-growing cleantech company as a Backend Kotlin Engineer that is driving the global shift to clean, affordable energy through an integrated hardware and software smart-grid platform focused on residential EV charging. By leveraging data, AI, and strong industry partnerships, they connect cars, chargers, people, and energy … providers to place consumers at the heart of the energy transition. 🚀 What You'll Do: 🧱 Contribute to scalable backend infrastructure built in Kotlin ✅ Write clean, maintainable, tested code in production 🧠 Shape tech strategy and architecture with new ideas and tools 🤝 Work closely with Product Owners and team members to deliver value 👨‍🏫 Mentor junior developers and support their growth 🧠 What More ❯

Backend Engineer (Kotlin) Hybrid (London) Up to 95k Join a fast-growing cleantech company as a Backend Kotlin Engineer that is driving the global shift to clean, affordable energy through an integrated hardware and software smart-grid platform focused on residential EV charging. By leveraging data, AI, and strong industry partnerships, they connect cars, chargers, people, and energy … providers to place consumers at the heart of the energy transition. What You'll Do: Contribute to scalable backend infrastructure built in Kotlin Write clean, maintainable, tested code in production Shape tech strategy and architecture with new ideas and tools Work closely with Product Owners and team members to deliver value Mentor junior developers and support their growth What More ❯