1 to 25 of 34 Senior Backend Developer Jobs in the UK

Senior Backend Developer - Architecture, Data Modelling £(Apply online only) per day (Inside IR35 - Umbrella) London/Hybrid (3 days per week on-site) Duration: Initially 6 months My client is a global financial services organisation who are hiring an experienced Senior Backend Enginee r with … strong Architecture and Data modelling skills. The role will focus on making complex enterprise applications faster, simpler and more reliable. This is a backend-focused role, with some frontend capability to deliver changes. Key Requirements: Senior backend engineering experience . A track record of building and operating ...

Senior Backend Developer (PHP/AI) Multis UK Limited is looking for an experienced Senior Backend Developer for the development and improvement of production systems, APIs and online marketplace platforms. AI-assisted development is part of our everyday workflow. Form of employment : part-time … full-time, contract Location : Remotely Job responsibilities Design and development of backend applications and REST APIs Development in PHP 8+ with SQL databases Architecture and improvement of existing production systems Search, automation and third-party service integrations Code review, debugging and automated testing Use of AI coding tools ...

Senior Backend Developer Full-time Inside IR35 Hybrid 1 office day London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels … full-time role, 37 hours per week. If this role feels right, send us your CV. Accountabilities: Playing a pivotal role in the backend engineering team, you will help to build full-stack cloud apps. You'll be using Python and AWS Cloud services on the backend. Adopt ...

Senior Backend Developer (Java/Spring Boot/AWS) Rate: £500 - £600 Outside IR35 Location: London - 3 times on site a month Duration: 6 months initial The role: I'm working with a financial services organisation that needs a Senior Backend Developer to build ...

Senior Backend Developer for Video on Demand and Live Streaming (GoLang) Contract 12 months OUTSIDE IR35 Remote (UK) A leading video platform is seeking experienced Senior Backend Developers with expertise in GoLang to contribute to the VoD2Live project. This person must have experience working … Streaming or Video on Demand. The role requires developing robust, high-performance backend services that integrate seamlessly with third-party services such as CDNs, DRM providers, and cloud platforms. This position is ideal for candidates with strong problem-solving skills and a deep understanding of video streaming protocols ...

backend developer who's just as comfortable in a Kubernetes cluster as you are in a PHP codebase, and fancies Friday afternoons off? We're looking for a Senior Backend Developer to join our growing digital team, taking on real ownership of our backend … rather than reporting up through layers of process. You'll report to our Head of Delivery and work closely with the rest of the backend team, but this is an individual contributor role with no direct reports. If you're comfortable in modern PHP, properly comfortable ...

Senior Backend Developer for Video on Demand and Live Streaming (GoLang) - Contract - 12 months - OUTSIDE IR35 - Remote (UK) A leading video platform is seeking experienced Senior Backend Developers with expertise in GoLang to contribute to the VoD2Live project. This person must have experience working ...

Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS) systems to help customers monitor assets, detect anomalies, and make informed operational decisions. As a Senior Software Backend Developer, you will play a key role in building and enhancing the backend services that power these solutions. Working … have the opportunity to create technology that delivers real-world impact on a global scale. The Opportunity We are seeking a talented and experienced Senior Software Backend Developer to join our Edge Platform team based in Elstree, London. This is a hands-on engineering role where ...

Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS) systems to help customers monitor assets, detect anomalies, and make informed operational decisions. As a Senior Software Backend Developer, you will play a key role in building and enhancing the backend services that power these solutions. Working … have the opportunity to create technology that delivers real-world impact on a global scale. The Opportunity We are seeking a talented and experienced Senior Software Backend Developer to join our Edge Platform team based in Elstree, London. This is a hands-on engineering role where ...

Backend Senior OR Lead Magento Developer Back-end Senior/Lead Magento Developer We are a young, dynamic and rapidly growing web development agency based in SW London with some cool clients and great projects. Due to continued success and growth … lookout for a talented senior/lead back-end Magento Developer to join our team. We have an experienced Magento development team working in all areas of e-commerce deliveries, including new builds, extension development, support and maintenance and R&D. About the Role This is an exciting ...

Senior Backend Developer will be responsible for designing and implementing robust and scalable backend systems to support the company's iGaming products and services. About 5 Star iGaming Media 5 Star iGaming Media is a leading agency in the iGaming industry, providing a range of digital ...

Role Overview Multis UK Limited is hiring an experienced Senior Backend Developer to lead the architecture, development, and enhancement of production systems, REST APIs, and online marketplace platforms. The position features flexible work formats (part-time, full-time, or contract) in a fully remote environment, with … strong focus on AI-assisted software engineering. Key Responsibilities Backend & API Architecture: Design and build backend applications and REST APIs using PHP 8+ and SQL databases while refining existing production systems. Integrations & Automation: Manage search engine technologies, automation pipelines, and third‐party service integrations. Quality & Mentorship: Conduct code ...

Senior Backend Developer - Blockchain Infrastructure London, England Who We Are: Galaxy Digital Inc. (Nasdaq: GLXY) is a global leader in digital assets and data center infrastructure, growing the economy that runs on code. Galaxy delivers the onchain infrastructure that connects institutions to digital assets, including trading, advisory … be. Be Selective To Be Effective. Be Highly Aligned, Loosely Coupled. Disagree Transparently. Build Dream Teams. Who You Are: You'll design and build backend systems powering blockchain infrastructure and staking products across Galaxy — spanning Ethereum-based systems, staking infrastructure (native and liquid), and blockchain data systems and APIs. ...

looking for an experienced Senior Backend Developer to join our growing engineering team. You'll play a key role in designing, developing and maintaining highly scalable and reliable backend services, primarily using Python. Working closely with Product, Design and Sales teams, you'll translate complex business ...

Senior Backend PHP Developer £500 per day (12 Months+/Option of working from Remote/Outside IR35) Seasoned PHP developer to work on a new Greenfield backend REST API for the transport industry and help implement it. You will be working alongside a Senior ...

challenging and exciting environment for career development, with a focus on training, growth and fostering an inclusive culture. We are now looking for a Senior Backend Software Developer to join our Apps Experience team on a 12 month fixed contract. You could be building the products that … throughout the Open Source community. Many of our developers regularly attend and present at conferences. Please visit our Guardian Developers site and the Guardian Developer blog for more information about working in the Digital Development team. About you As a full stack engineer, you’ll be equally willing ...

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels who are passionate about crafting exceptional products. Initially it will be a six-month contract but there is potential for it to be extended. … full-time role, 37 hours per week. If this role feels right, send us your CV. Accountabilities: Playing a pivotal role in the backend engineering team, you will help to build full-stack cloud apps. You'll be using Python and AWS Cloud services on the backend. Adopt ...

Waracle are looking for a Senior Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business … seamlessly from strategy, design and delivery to operations. This is a Hybrid role working from the London office 2 days a week. As a Senior Develope r at Waracle, you will play a pivotal role in shaping robust, scalable systems while fostering an inclusive environment where everyone can thrive. ...

Brown & Brown, Inc. are seeking a skilled Backend Developer to join a hybrid team in London. You will work on a custom platform including online quote, bind, and documentation services, with analytics for underwriting and portfolio analysis. The role emphasizes design, development, and maintenance of scalable server-side ...

TypeScript/Node Developer Futureheads are looking for a TypeScript Developer who has experience in platform and back end development preferably with Node and AWS Bedrock experience but .Net would also be considered. The role is for a well established outfit who have gone through a technical transformation ...

exceptional applications and solving complex technical problems. Someone who enjoys taking ownership of projects and delivering high-quality software with minimal supervision. A collaborative developer who enjoys sharing knowledge, mentoring others and working across functional areas. Interested in evaluating new technologies and staying current with industry developments. Comfortable making … guide the technical direction of products and services. What you'll be doing: Develop drug discovery cloud services, APIs and web applications using Python backend services including FastAPI and Django. Design and build reliable REST APIs and services for applications, automated pipelines and AI workflows. Deliver complex software projects ...

exceptional applications and solving complex technical problems. Someone who enjoys taking ownership of projects and delivering high-quality software with minimal supervision. A collaborative developer who enjoys sharing knowledge, mentoring others and working across functional areas. Interested in evaluating new technologies and staying current with industry developments. Comfortable making … guide the technical direction of products and services. What you'll be doing: Develop drug discovery cloud services, APIs and web applications using Python backend services including FastAPI and Django. Design and build reliable REST APIs and services for applications, automated pipelines and AI workflows. Deliver complex software projects ...

side components that integrate seamlessly with client applications. Contribute to architectural improvements and maintain high standards of code performance and maintainability. Build and extend backend features using internal and third‐party APIs (e.g., Modulr, Truelayer, Checkout.com) to support lending products including loan applications, collections, and payments. Develop internal tools … Work alongside front‐end and product teams to build innovative solutions that empower users to manage their finances more effectively. Experience designing and scaling backend services from scratch, with solid understanding of microservices architecture and distributed systems. Commercial experience in high‐scale startups. Years of experience is a poor ...

unified company, we’re combining expertise to offer a full-service, frictionless parking solution for both businesses and consumers. About the role The Senior Fullstack Developer ships high-impact product features across JustPark’s stack, working closely with product, design and other engineers to deliver value tocustomers. … design, build and ship features end-to-end across web, mobile or backend as needed, own meaningful pieces of the product surface and the systems that back them, and raise the bar on code quality, testing and engineering hygiene in your team. The role works with engineers in code ...

Cresset is seeking a skilled software engineer to develop drug discovery cloud services, APIs and web applications using Python backends (FastAPI, Django). You will design robust REST APIs, guide architecture, and own complex projects ...