35 senior backend developer jobs found

  Well Played Games is a small studio based in Leamington Spa, UK with a strong track record of collaborating with world-class IP. Founded in 2017, our aim is to build live free-to-play video games across multiple platforms. We are looking for a Senior Backend Developer to join our team and take ownership of development across our live mobile titles. The Role As part of the project’s code team, you will be responsible for the support of the live game, the design and development of new features. You will take full ownership of the backend of a live product and work closely with the whole team to deliver new, major features safely. You will be responsible for the design and development of services to support new game features. You will also be involved in and manage the rest of the team’s backend work by providing technical oversight, support and code reviews. As a senior developer, you will be encouraged to contribute to the analysis and pragmatic...

Well Played Games is a small studio based in Leamington Spa, UK with a strong track record of collaborating with world-class IP. Founded in 2017, our aim is to build live free-to-play video games across multiple platforms. We are looking for a Senior Backend Developer to join our team and take ownership of development across our live mobile titles. The Role As part of the project’s code team, you will be responsible for the support of the live game, the design and development of new features. You will take full ownership of the backend of a live product and work closely with the whole team to deliver new, major features safely. You will be responsible for the design and development of services to support new game features. You will also be involved in and manage the rest of the team’s backend work by providing technical oversight, support and code reviews. As a senior developer, you will be encouraged to contribute to the analysis and pragmatic selection of...

  Well Played Games is a small studio based in Leamington Spa, UK with a strong track record of collaborating with world-class IP. Founded in 2017, our aim is to build live free-to-play video games across multiple platforms. We are looking for a Senior Backend Developer to join our team and take ownership of development across our live mobile titles. The Role As part of the project’s code team, you will be responsible for the support of the live game, the design and development of new features. You will take full ownership of the backend of a live product and work closely with the whole team to deliver new, major features safely. You will be responsible for the design and development of services to support new game features. You will also be involved in and manage the rest of the team’s backend work by providing technical oversight, support and code reviews. As a senior developer, you will be encouraged to contribute to the analysis and pragmatic...

  Well Played Games is a small studio based in Leamington Spa, UK with a strong track record of collaborating with world-class IP. Founded in 2017, our aim is to build live free-to-play video games across multiple platforms. We are looking for a Senior Backend Developer to join our team and take ownership of development across our live mobile titles. The Role As part of the project’s code team, you will be responsible for the support of the live game, the design and development of new features. You will take full ownership of the backend of a live product and work closely with the whole team to deliver new, major features safely. You will be responsible for the design and development of services to support new game features. You will also be involved in and manage the rest of the team’s backend work by providing technical oversight, support and code reviews. As a senior developer, you will be encouraged to contribute to the analysis and pragmatic...

Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create end-to-end business and technical solutions that are people-centred, safe, and designed for the future. Our human touch sets us apart from other consultancies, system integrators and software houses - with people, technology, and data at the heart of who we are, we believe in creating value and sustainability through everything we do for our clients, staff, communities, and the planet. We support our clients in the success of their projects while working collaboratively to share skill sets and solve problems. At Methods we have fun while working hard; we are not afraid of making mistakes and...

Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create end-to-end business and technical solutions that are people-centred, safe, and designed for the future. Our human touch sets us apart from other consultancies, system integrators and software houses - with people, technology, and data at the heart of who we are, we believe in creating value and sustainability through everything we do for our clients, staff, communities, and the planet. We support our clients in the success of their projects while working collaboratively to share skill sets and solve problems. At Methods we have fun while working hard; we are not afraid of making mistakes and...

Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create end-to-end business and technical solutions that are people-centred, safe, and designed for the future. Our human touch sets us apart from other consultancies, system integrators and software houses - with people, technology, and data at the heart of who we are, we believe in creating value and sustainability through everything we do for our clients, staff, communities, and the planet. We support our clients in the success of their projects while working collaboratively to share skill sets and solve problems. At Methods we have fun while working hard; we are not afraid of making mistakes and...

Lead Technical Developer (.Net and Python) Taunton, United Kingdom | Posted on 02/06/2026 Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens.   We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter.   Overview We are seeking an experienced Lead Technical Developer to provide hands-on technical leadership within a client delivery team. You will be responsible for driving engineering standards, code quality, and the technical direction of a work package, ensuring the delivery of secure, maintainable, and high-quality software aligned...

Senior Developer Taunton, United Kingdom | Posted on 02/06/2026 Job Description   About Scrumconnect Consulting   Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter.     Role Purpose Join a blended agile delivery squad working on large-scale, secure digital services for a government client. As a Senior Developer, you will bring strong hands-on experience across both .NET and Python, contributing to cloud-native API development, Legacy modernisation,...

The Role Are you a senior backend engineer who thrives on distributed systems, clean architecture, and complex data problems? At ONYX Insight, we're looking for a Senior Software Developer (Contractor) to make an immediate impact on our core platform, a sophisticated distributed system processing data from wind turbines around the world. This is not a typical SaaS CRUD role. You'll work across a distributed architecture including asynchronous messaging, worker processes, and data ingestion pipelines. Frontend exposure is a bonus, not a requirement. Key Responsibilities: Backend Delivery: Implement robust, well-tested C# .NET services following clean architecture principles — domain logic, data access, messaging, and background processing. Distributed Systems: Contribute to service boundary design, asynchronous messaging flows, and worker processes within our modular monolith, with an eye on future decomposition. Data Pipelines:...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens.   We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Job Summary We are looking for an experienced Senior Full Stack Developer with expertise in enterprise web application development, WebCAF framework, and AI chatbot integration/support. The ideal candidate will be responsible for designing, developing, and maintaining scalable applications while contributing to AI-driven conversational solutions and digital transformation initiatives. The candidate should possess strong frontend and backend development...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff Engineers with deep code review experience and execution insight QA Engineers...

A Freelance CRM Solutions Engineer is needed to join The Legal Director, a scaling B2B legal services firm entering a critical stage of operational maturity. Working directly with the leadership team, this is a high impact project role focused on reviewing, redesigning and rebuilding the systems that underpin the commercial engine. This is not a standard CRM admin brief. It sits at the intersection of systems architecture, product thinking, operational design and hands on technical delivery. You will assess the current environment, untangle technical debt, and design a future state that is commercially practical, scalable and aligned to how the business actually works. The Legal Director provides fractional legal support to SMEs through a flexible model that combines a core team with a large network of freelance lawyers. As the business grows, the need for clarity across pipeline tracking, workflow management, reporting and integrations has become critical. Joining...

400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior iOS Developer to design, build, and maintain high-quality native iOS applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within structured...

400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...

The Role Are you a highly skilled React contractor looking to make an immediate impact on a modern, high-visibility platform? At ONYX Insight, we’re looking for a Senior Software Contractor to join our team, with a primary focus on frontend delivery using React, alongside contributing to our C# .NET backend services. This is a hands-on contract role where you’ll be trusted to hit the ground running, deliver high-quality code, and contribute to the evolution of our core platforms supporting the renewable energy sector. You’ll work closely with product, design, and engineering teams to build scalable, performant user interfaces, while also supporting backend integrations where needed. Key Responsibilities Deliver High-Impact Frontend Solutions: Own the development of responsive, high-performance applications using modern React (primary focus). Full-Stack Contribution: Support backend development with C# .NET (secondary focus), ensuring seamless...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff Engineers with deep code review...