1 to 25 of 54 Backend Developer Jobs in the UK

Senior Backend Python Developer - world class healthcare tech AWS, SQL, Python unit testing, TDD, CI/CD London hybrid - a day a week in the office c£70-85k negotiable Were seeking a Senior Backend Developer with a strong software engineering background including 5+ years majoring in writing Backend applications using Python and Django … Rest Framework). The Senior Backend Developer will be joining a top-flight team of 45 at a world-class healthcare scaleup to help scale a native mobile app by 10x over the next 12 months and take the app to the next level. The successful candidate will be analytical, proactive, and delivery focused. A high energy, self … of complexity. Proactively respond to analytics to ensure our products are robust and meet users needs Take technical ownership of areas of product Requirements: 5+ years of experience writing Backend applications using Python and Django (Rest Framework) or related frameworks, e.g. Flask, FastAPI or similar Good understanding of ORM (either Django or SQLAlchemy) Good understanding of Python Unit Testing More ❯

Job Title:Software Engineer( Backend Developer) Location:London Contract: 6 Months with potential extension (Inside IR35) Commute- Max 2 days in office Payrate : £63 - £84 Per Hour Inside IR35 About the Role We are seeking a Java Backend Developer for the FinTech business unit of a leading global digital travel platform. If you are a Java … Backend Developer with 5 to 12 years of experience then this opportunity is for you. This role involves building innovative regulatory technology solutions to ensure compliance and manage risks. The engineer will work on a mission-critical platform that uses state-of-the-art technology for sanctions screening and other regulatory processes. The position requires developing highly scalable … stakeholders What You'll Do Design, build, and maintain scalable microservices that power our compliance platforms. Develop tools and systems for sanctions screening, transaction monitoring, and regulatory reporting. Optimize backend processes for performance, reliability, and data integrity. Enhance tooling, analytics, and reporting used by internal compliance stakeholders. Collaborate with cross-functional teams to understand regulatory processes and deliver technical More ❯

Senior Backend Developer Location: London Hybrid: minimum 2 days a week (40%) onsite (in line with departmental requirements) Lane Clark &Peacock (LCP) is a leading independent consultancy that uses powerful analytics fused with human expertise to shape a more positive future. We provide market-leading capabilities across pensions and financial services, energy, health, and analytics. Our technology and … leverage the latest technology and analytics across a range of industries to stay at the forefront of data-driven and digital solutions. What's the role? As a Senior Backend Developer in our Insurance Analytics team, you will play a leading role in the continued development of InsurSight, our award-winning insurance analytics platform. InsurSight was launched in … reviews, and take ownership of key technical challenge - particularly where complex datasets and performance bottlenecks are involved. You will have the benefit of the guidance of our lead C# developer and Python developer, but also the opportunity to take ownership of your work and to work closely with our wider team of data scientists, actuaries and industry specialists. More ❯

Principal Backend Developer (C#/.NET/Playwright) The Opportunity This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You'll be joining a company that's scaling rapidly, building innovative products that make a real difference to its customers. This role … offers the chance to take ownership of backend systems, shape best practice, and mentor the next generation of engineers. The Role You'll provide technical leadership across backend development, ensuring systems are robust, scalable, and future-proof. Working closely with product owners, testers, and front-end teams, you'll bring engineering excellence into every decision. With a stack … cloud services, and automation frameworks, you'll be both hands-on in coding and guiding others to deliver their best work. Day-to-day responsibilities Architect and build scalable backend services in C#/.NET Drive adoption of clean coding practices, design patterns, and SOLID principles Mentor engineers, fostering a culture of growth, learning, and high performance Collaborate with More ❯

Principal Backend Developer (C#/.NET/Playwright) The Opportunity This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You'll be joining a company that's scaling rapidly, building innovative products that make a real difference to its customers. This role … offers the chance to take ownership of backend systems, shape best practice, and mentor the next generation of engineers. The Role You'll provide technical leadership across backend development, ensuring systems are robust, scalable, and future-proof. Working closely with product owners, testers, and front-end teams, you'll bring engineering excellence into every decision. With a stack … cloud services, and automation frameworks, you'll be both hands-on in coding and guiding others to deliver their best work. Day-to-day responsibilities Architect and build scalable backend services in C#/.NET Drive adoption of clean coding practices, design patterns, and SOLID principles Mentor engineers, fostering a culture of growth, learning, and high performance Collaborate with More ❯

We are seeking a talented mid-Level Backend Developer with experience in both Java and Node.js/TypeScript for an exciting 6-month contract role with a global financial services client in Canary Wharf. This position offers a daily rate of £700 via an umbrella company. The Role You will be an integral part of our development team … with a focus on both backend development and infrastructure-related tasks. A key part of your role will be to refactor an existing codebase from Node.js to Java to align with the bank's infrastructure strategy and address technical debt. You will also be responsible for maintaining existing scalable backend applications. This is a hands-on role where … you will contribute high-quality code and robust software solutions while working with the team to meet tight deadlines. Key responsibilities include: Maintaining existing scalable backend applications using Java, Node.js, and TypeScript. Migrating backend applications to Java to align with the bank's preferred infrastructure. Utilising Docker and Kubernetes for containerisation. Implementing CI/CD pipelines using GitHub More ❯

We are seeking a talented mid-Level Backend Developer with experience in both Java and Node.js/TypeScript for an exciting 6-month contract role with a global financial services client in Canary Wharf. This position offers a daily rate of £700 via an umbrella company. The Role You will be an integral part of our development team … with a focus on both backend development and infrastructure-related tasks. A key part of your role will be to refactor an existing codebase from Node.js to Java to align with the bank's infrastructure strategy and address technical debt. You will also be responsible for maintaining existing scalable backend applications. This is a hands-on role where … you will contribute high-quality code and robust software solutions while working with the team to meet tight deadlines. Key responsibilities include: Maintaining existing scalable backend applications using Java, Node.js, and TypeScript. Migrating backend applications to Java to align with the bank's preferred infrastructure. Utilising Docker and Kubernetes for containerisation. Implementing CI/CD pipelines using GitHub More ❯

Role: Backend Developer Contract: 6 months Location: Canary Wharf, London Working model: Hybrid - 3 days onsite We're looking for a talented Backend developer with strong Java and Node.js/TypeScript experience to join a dynamic development team within a leading financial services organisation. This role is ideal for someone who enjoys working across both backend More ❯

Backend Web Developer – Sheffield – £30,000 to £40,000 Benefits An established and innovative technology business based in Sheffield is looking to recruit a talented Backend Web Developer to join their friendly and supportive team. This is a great opportunity to work on exciting, industry-leading web projects in a collaborative environment that values integrity, continuous … support and guidance to internal teams Key Skills & Experience Applicants should have a minimum of 2 years’ experience, with proven skills in at least three of the following areas: - Backend development using .NET - Backend development using alternative technologies - API integration - SQL Server and T-SQL - Version Control (e.g., Git) You will also bring: - Strong communication and collaboration skills More ❯

of career success. Our extensive network, personalized approach, and supportive guidance ensure that you're in the best hands to find your next job opportunity. Job Title: Remote Senior Backend Developer ( 100% Work From Home) Location: Remote from Latin America, hybrid in Mexico City preferred Position Type: Full-time Salary :$90,000 - $140,000 USD/year based … the future of digital payments. This is a full-time position, with a preference for candidates located in Mexico City, though remote work will be considered. As a Senior Backend Developer for our client, the individual will focus on the development of critical payment solutions utilized by major Mexican businesses. They will contribute to a dynamic team, consistently More ❯

Founders that require Volunteers to survive and grow their tech startups due to their inability to hire paid talent. About the Opportunity We are looking for a highly skilled Backend Developer with expertise in Laravel to join our dynamic team. As a backend developer, you will be responsible for creating and maintaining robust, scalable, and secure More ❯

We’re seeking a topflight Senior Backend Developer with a strong software engineering background including 5+ years majoring in writing Backend applications using Python and Django (Rest Framework). The Senior Backend Developer will be joining a top-flight team of 45 at a world-class healthcare scaleup to help scale a native mobile app … of complexity. Proactively respond to analytics to ensure our products are robust and meet users’ needs Take technical ownership of areas of product Requirements: 5+ years of experience writing Backend applications using Python and Django (Rest Framework)or related frameworks, e.g. Flask, FastAPI or similar Good understanding of ORM (either Django or SQLAlchemy) Good understanding of Python Unit Testing More ❯

Lead Backend Developer Location: London - 1x a month Salary: Up to £120,000 (D.O.E) + benefits Fruition Group are partnering with a high-growth Insurtech unicorn that's scaling its engineering function. This is a unique chance to work across both proven, revenue-generating products and greenfield initiatives that are reshaping the future of insurance. It's an … ideal role for a driven Lead Engineer who thrives in ambitious environments and wants to make a tangible impact. As a Lead Backend Engineer, you'll take ownership of designing and scaling cloud-native backend systems. You'll work primarily with Python (FastAPI) and play a key role in shaping the architecture of microservices that support millions of … decisions. This is a high-impact role where your work directly drives product growth, system resilience, and platform evolution. What will I be doing: Design, develop, and optimise scalable backend services in Python, leveraging FastAPI. Lead architectural discussions with a focus on performance, scalability, and reliability. Deliver complex features end-to-end - from design through deployment and monitoring. Provide More ❯

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 to 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 applications, contributing to the development of internal tools and processes, and ensuring code quality through testing and documentation. You … ll also help shape technical standards and collaborate closely with other teams across the business. Key Responsibilities Architect and develop scalable backend systems for enterprise-level applications Build and maintain robust Node.js services using TypeScript Optimise SQL queries and database performance Deploy and manage applications in cloud environments Customise build and development tools to suit project needs Apply best More ❯

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 to 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 applications, contributing to the development of internal tools and processes, and ensuring code quality through testing and documentation. You … ll also help shape technical standards and collaborate closely with other teams across the business. Key Responsibilities Architect and develop scalable backend systems for enterprise-level applications Build and maintain robust Node.js services using TypeScript Optimise SQL queries and database performance Deploy and manage applications in cloud environments Customise build and development tools to suit project needs Apply best More ❯

Senior Backend Developer Location: UK remote Salary: Up to £95,000 (D.O.E) + benefits Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily in new innovations that will shape the sector for years to come. This is … an exciting opportunity for a motivated Senior Engineer who wants to grow in a high-performing, forward-thinking business. As a Senior Backend Engineer, you'll play a central role in building and scaling the systems that power their insurance platform. You'll focus on developing Python-based cloud microservices (FastAPI preferred), contributing to the architecture of resilient, high More ❯

Senior Backend Developer Location: London - 1x a month Salary: Up to £95,000 (D.O.E) + benefits Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily in new innovations that will shape the sector for years to come. … This is an exciting opportunity for a motivated Senior Engineer who wants to grow in a high-performing, forward-thinking business. As a Senior Backend Engineer, you'll play a central role in building and scaling the systems that power their insurance platform. You'll focus on developing Python-based cloud microservices (FastAPI preferred), contributing to the architecture of More ❯

Are you a Back End Java Developer with experience within the iGaming and Gambling sector looking for a new and exciting challenge? BENEFITS : up to £95k depending on experience, fully remote, excellent benefits packageYou will be joining a rapidly expanding company within the iGaming sector, who are committed to providing top-tier gaming experiences to players around the world. … recognised among the top brands within our market, blending sports betting and online casino entertainment on a cutting-edge, custom-built platform. You will be a skilled Senior Java Backend Developer who is a self-motivated professional with a strong track record and a passion for excellence. You'll play a key role in developing innovative iGaming products … Your contributions will help deliver high-quality applications and services, reinforcing the company’s position as an industry leader. Core Responsibilities Work closely with the team to implement complex backend logic and platform solutions. Write clean, scalable, and maintainable code, adhering to industry best practices. Stay updated on the latest Java frameworks, libraries, and development techniques. Translate business needs More ❯

Backend Developer – Early Employee Opportunity We’re a fast-growing, funded startup building the next generation of data-driven platforms. As one of our early employees , you’ll join a small, multidisciplinary team working closely with the leadership team on the migration of our platform from v0 → v1 and the development of new features. This role offers a … clear path to grow into a senior developer or product owner as the company scales. What you’ll do: Build and expand backend applications using Python (FastAPI) Design and implement microservices and REST APIs Write clear documentation, unit tests, and end-to-end tests Work with AWS, Docker, SQLAlchemy, and SQL databases Deploy features via CI/CD More ❯

Backend Developer – Early Employee Opportunity We’re a fast-growing, funded startup building the next generation of data-driven platforms. As one of our early employees , you’ll join a small, multidisciplinary team working closely with the leadership team on the migration of our platform from v0 → v1 and the development of new features. This role offers a … clear path to grow into a senior developer or product owner as the company scales. What you’ll do: Build and expand backend applications using Python (FastAPI) Design and implement microservices and REST APIs Write clear documentation, unit tests, and end-to-end tests Work with AWS, Docker, SQLAlchemy, and SQL databases Deploy features via CI/CD More ❯

Backend Developer – Early Employee Opportunity We’re a fast-growing, funded startup building the next generation of data-driven platforms. As one of our early employees , you’ll join a small, multidisciplinary team working closely with the leadership team on the migration of our platform from v0 → v1 and the development of new features. This role offers a … clear path to grow into a senior developer or product owner as the company scales. What you’ll do: Build and expand backend applications using Python (FastAPI) Design and implement microservices and REST APIs Write clear documentation, unit tests, and end-to-end tests Work with AWS, Docker, SQLAlchemy, and SQL databases Deploy features via CI/CD More ❯

Backend Developer – Early Employee Opportunity We’re a fast-growing, funded startup building the next generation of data-driven platforms. As one of our early employees , you’ll join a small, multidisciplinary team working closely with the leadership team on the migration of our platform from v0 → v1 and the development of new features. This role offers a … clear path to grow into a senior developer or product owner as the company scales. What you’ll do: Build and expand backend applications using Python (FastAPI) Design and implement microservices and REST APIs Write clear documentation, unit tests, and end-to-end tests Work with AWS, Docker, SQLAlchemy, and SQL databases Deploy features via CI/CD More ❯

Backend Developer – Early Employee Opportunity We’re a fast-growing, funded startup building the next generation of data-driven platforms. As one of our early employees , you’ll join a small, multidisciplinary team working closely with the leadership team on the migration of our platform from v0 → v1 and the development of new features. This role offers a … clear path to grow into a senior developer or product owner as the company scales. What you’ll do: Build and expand backend applications using Python (FastAPI) Design and implement microservices and REST APIs Write clear documentation, unit tests, and end-to-end tests Work with AWS, Docker, SQLAlchemy, and SQL databases Deploy features via CI/CD More ❯

SThree are pleased to announce we're recruiting for a talented Senior Java Backend Developer to join & guide our excellent team based in our fantastic office space located in 8 Bishopsgate, London. SThree are building a new candidate digital experience to manage the interactions that candidates and contractors have with SThree. The first part of this journey is More ❯

priorities, and lean resources, but you embrace the challenge, staying focused under pressure, taking ownership, adapting quickly, and pitching in wherever needed. The Role We re looking for talented backend developer with proven commercial experience to help us build the core infrastructure that shall power our entire platform. You ll be responsible for designing, developing, and maintaining secure … scalable APIs, data processing pipelines, and backend integrations with third-party services like Stripe, PayPal, and Open Banking providers. Key Responsibilities: Build and maintain robust RESTful APIs for mobile and web clients. Design and manage databases built in MongoDB and SQL Server to store, query, and aggregate user financial data. Develop data ingestion pipelines to process real-time and … batch data from external services. Optimize backend performance and ensure application scalability and resilience. Build authentication and authorization flows, following best practices for fintech-grade security. Write unit and integration tests, participate in code reviews, and contribute to continuous improvement. Collaborate closely with frontend/mobile engineers, product managers, and founders in agile development cycles. Contribute to infrastructure decisions More ❯