25 of 25 Permanent Senior Backend Developer Jobs in the UK

investors Lunar Ventures and Stride VC, we are accelerating our vision to become the go-to provider for AI-driven automation solutions across the globe. About the Role As Senior Backend Developer in the Product team, you are responsible for building features and designing and implementing new endpoints. This involves diverse tasks from gathering requirements and giving … team. Our Stack And How We Work About You 5+ years working with Python and frameworks like Django, Flask, or FastAPI, with a strong command of building and optimizing backend systems. Hands-on experience with relational/SQL databases, ensuring efficient and reliable data management. Well-versed in software engineering essentials such as unit testing, CI/CD, integration More ❯

k + Benefits 2 days on site in North London 3 days remote I am recruting for a talented and driven Backend Engineer to join a dynamic team, focused on the creation and deployment of innovative software solutions. As a Backend Engineer, you will work closely with cross-functional teams, including engineering, product management, design, and quality assurance … features by working alongside engineering, product management, design, and QA teams. Promote best practices : Advocate and enforce coding standards, architectural patterns, and best practices. Your in-depth knowledge of backend technologies will help guide and support your peers, ensuring high-quality code. Automation and process improvement : Increase development efficiency, reliability, and scalability by creating automated processes that streamline workflows. … with Flask, FastAPI, or similar frameworks). Expertise in designing architectures that meet scalability, reliability, and security goals. Strong problem-solving skills, particularly in product development. Solid understanding of backend best practices, coding standards, and architectural patterns. Experience in automating builds (CI/CD), feature flags, and automated testing. Bonus Skills: Experience with message-driven systems (e.g., Google Pub More ❯

We're looking for a talented Senior Backend Developer to join a purpose-driven tech team that creates solutions making a real difference in people's lives. This is more than just a job-it's a chance to shape systems that support individuals and organisations across the UK and Ireland. The Role As a Senior Backend Developer, you'll be a founding member of a newly formed cross-functional engineering team. You'll play a key role in setting the tone for the team's culture, practices, and success. Your technical expertise will shape our architecture and support business-critical applications. This is a highly collaborative role suited to someone with a … passion for software craftsmanship, mentoring, and continuous improvement. Key Responsibilities Enhance features and functionality of core products Design and implement scalable backend systems using C# (.NET 6+ preferred) Build cloud-native solutions using Azure, including Azure Functions (serverless) Work with schema-less databases such as Cosmos DB Write clean, maintainable, and testable code using TDD/BDD principles Create More ❯

We're looking for a talented Senior Backend Developer to join a purpose-driven tech team that creates solutions making a real difference in people's lives. This is more than just a job-it's a chance to shape systems that support individuals and organisations across the UK and Ireland. The Role As a Senior Backend Developer, you'll be a founding member of a newly formed cross-functional engineering team. You'll play a key role in setting the tone for the team's culture, practices, and success. Your technical expertise will shape our architecture and support business-critical applications. This is a highly collaborative role suited to someone with a … passion for software craftsmanship, mentoring, and continuous improvement. Key Responsibilities Enhance features and functionality of core products Design and implement scalable backend systems using C# (.NET 6+ preferred) Build cloud-native solutions using Azure, including Azure Functions (serverless) Work with schema-less databases such as Cosmos DB Write clean, maintainable, and testable code using TDD/BDD principles Create More ❯

Waracle are looking for a Senior Backend 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 and customer challenges. We help our clients to innovate … and delivery to operations. This is a Hybrid role working from any of our UK offices (Glasgow, Dundee, Edinburgh and London) 2 days a week. Are you an exceptional Senior Backend Developer with deep expertise in .NET and C#? Ready to transcend coding, shape technical direction, and build robust, scalable solutions for leading clients? Waracle, a world … class digital technology consultancy, is seeking a visionary backend leader to join our team! This pivotal role places you at the forefront of designing, developing, and deploying high-performance backend systems that solve complex business challenges. If you thrive on intricate technical puzzles, leading high-performing teams, and driving innovation in a dynamic consultancy environment, this is your More ❯

Job Description Waracle is seeking a Senior Backend Developer to join our digital technology consultancy, renowned for its diverse and ambitious community of specialists in technology-driven transformation. We collaborate with clients to solve complex business and customer challenges, creating innovative digital products and services. Our projects involve business-critical IT transformations from strategy to operations. This … is a hybrid role based in any of our UK offices (Glasgow, Dundee, Edinburgh, London), requiring 2 days of on-site work per week. Are you an experienced Senior Backend Developer with expertise in .NET and C#? Do you want to influence technical directions and develop scalable solutions for leading clients? Join Waracle and take on a … role that involves designing, developing, and deploying high-performance backend systems to address complex challenges. If you enjoy solving technical puzzles, leading teams, and driving innovation, this is your chance to make a significant impact. Key Responsibilities: Lead Backend Architecture: Design and develop scalable .NET/C# applications, including microservices and APIs, ensuring high code quality and clean More ❯

safe and sustainable aviation future. Our global teams deliver a reliable, optimum, and customized user experience to more than 500 customers worldwide. We are looking for a seasoned Software Developer with experience in designing, implementing, and optimizing SaaS applications in a microservices-based environment. As a member of our team, you will contribute to all aspects of the software … Demonstrated experience in leading software development teams, fostering a collaborative and high-performance culture, and effectively representing the team's technical vision and needs to stakeholders, including architects and senior management Strong capability in identifying technical challenges and bottlenecks, constructively proposing and implementing effective solutions (either individually or by guiding the team), while actively building team engagement, fostering a … positive atmosphere, and championing team spirit Ability to take backend projects from initial requirements to production deployment Master of Science Degree in software engineering or a related field Proficiency in English spoken and written Nice-to-Haves: Hybrid work environment with up to 2 days working from home weekly Hands-on experience with RESTful/SOAP API design, development More ❯

safe and sustainable aviation future. Our global teams deliver a reliable, optimum, and customized user experience to more than 500 customers worldwide. We are looking for a seasoned Software Developer with experience in designing, implementing, and optimizing SaaS applications in a microservices-based environment. As a member of our team, you will contribute to all aspects of the software … Demonstrated experience in leading software development teams, fostering a collaborative and high-performance culture, and effectively representing the team's technical vision and needs to stakeholders, including architects and senior management Strong capability in identifying technical challenges and bottlenecks, constructively proposing and implementing effective solutions (either individually or by guiding the team), while actively building team engagement, fostering a … positive atmosphere, and championing team spirit Ability to take backend projects from initial requirements to production deployment Master of Science Degree in software engineering or a related field Proficiency in English spoken and written Nice-to-Haves: Hybrid work environment with up to 2 days working from home weekly Hands-on experience with RESTful/SOAP API design, development More ❯

Job Title: Lead Senior Specialist - Back-end .NET Developer - Fully Remote Job Overview: We are seeking a talented Lead Senior Specialist in Back-end .NET Development to join our client's dynamic Agile development team. This role is crucial in shaping strategic product modules, particularly the payroll calculation engine. The ideal candidate will possess a strong technical More ❯

Senior ML & AI Backend Developer You'll lead the design and deployment of scalable backend systems powering ML, big data, and LLM-driven applications. From MLOps pipelines and big data engineering to productionizing classical ML and LLMs, you'll be at the core of AI infrastructure. Key Requirements: Expert in Python, ML/AI frameworks (PyTorch … TensorFlow, Hugging Face) Proven MLOps, big data, and backend/API development experience Deep understanding of NLP and LLMs Proficient with cloud platforms (AWS/GCP/Azure), Airflow, DBT, Docker/Kubernetes Strong collaboration, problem-solving, and coding best practices Nice to have: LLM fine-tuning, streaming data, big data warehousing, open-source contributions. More ❯

Senior ML & AI Backend Developer You'll lead the design and deployment of scalable backend systems powering ML, big data, and LLM-driven applications. From MLOps pipelines and big data engineering to productionizing classical ML and LLMs, you'll be at the core of AI infrastructure. Key Requirements: Expert in Python, ML/AI frameworks (PyTorch … TensorFlow, Hugging Face) Proven MLOps, big data, and backend/API development experience Deep understanding of NLP and LLMs Proficient with cloud platforms (AWS/GCP/Azure), Airflow, DBT, Docker/Kubernetes Strong collaboration, problem-solving, and coding best practices Nice to have: LLM fine-tuning, streaming data, big data warehousing, open-source contributions. More ❯

the most cutting-edge technologies, conducting innovative Just Do It marathons, thinking about new features to add and investing in our employee training programs! BMC is looking for a Senior Java Backend Developer with passion for innovation and technology! You will be joining the Control-M Server team at BMC Software. This application is in the core … this team, you will have a tremendous impact on customer success-and when customers thrive, we all do . If you are an experienced, passionate, and highly motivated software developer with excellent communication skills, and if you are eager to share your knowledge with others and want to be a part of a team that encourages personal ambition and … growth, then your place is with us! In this role, you will be : Designing and developing features for an industry leading product Transforming sophisticated backend servers to a scalable cloud-based SaaS solutions Playing a vital role in project design to ensure scalability, reliability, and performance are met Designing and developing new features as well as maintaining existing features More ❯

We're now looking for a Senior Developer to join the Conferma team to build and maintain the systems that enable billions of pounds of B2B payments each year. From part of our development team, you'll work in an Agile environment to deliver innovative and robust solutions. We have ambitious plans, and you will be delivering the … work with our product teams to deliver exciting new features and help us reach new markets worldwide. You will ensure our software is extensible, robust, performant and secure. A Senior Software Developer at Conferma is responsible for: Building the mobile, web and backend platforms that streamline payment processes, reduce admin and improve cashflow for our customers. Collaborating More ❯

Senior Backend Developer If you're a seasoned backend developer craving more impact than just turning around tickets, this is your chance to join a trailblazing SaaS innovator where automation and AI tools are not a concept, they’re already deeply woven into day-to-day engineering. You'll work in a cutting-edge, Node.js … a fast-scaling technology company revolutionising procurement and logistics on a global scale. Their digital products support thousands of users worldwide. You'll be part of a highly engaged backend team, remote-first collaboration are standard, and long-term growth is prioritised. Your Role Write robust, maintainable backend code across APIs and business logic layers Partner with cross … grade functionality Apply automation tools daily to streamline dev tasks and prototype quickly Leverage AI tooling daily for faster problem-solving and prototyping What You’ll Bring Experience developing backend systems and ready to step into a senior role Strong proficiency with Node.js, TypeScript, and GraphQL Familiarity with modern development tools that enhance engineering efficiency A solid grasp More ❯

Remote/Travel to London twice per month An opportunity for a Senior Back-End Developer to join a growing fintech company, working on a ground-breaking trading platform in a team of seasoned entrepreneurs, finance, and tech professionals. The role: We are seeking a Back End Developer to join our team and support the design and More ❯

Senior Backend Developer – Elixir/Ruby/Go Location: Remote (One day a month in Chester) Fancy joining a high-growth tech business with a major product roadmap and big investment into engineering? We’re helping a client find a Senior Backend Developer to play a key role in scaling an established IoT platform … high-performing teams, and building systems that actually make a difference – this one’s worth a look. In the role, you’ll be: Designing, building, and maintaining secure, scalable backend systems using Elixir and Ruby , with some Go in the mix Taking the technical lead on key projects, supporting delivery while influencing the wider architecture Guiding and mentoring junior … to solve real-world problems at pace Rolling up your sleeves when it counts – especially during high-pressure delivery periods What we’re looking for: Significant experience as a backend engineer in modern product environments Strong critical thinking skills and a pragmatic approach to problem solving Ability to lead from the front – both technically and as a mentor A More ❯

Senior Backend Developer - Elixir/Ruby/Go Location: Remote (One day a month in Chester) Fancy joining a high-growth tech business with a major product roadmap and big investment into engineering? We're helping a client find a Senior Backend Developer to play a key role in scaling an established IoT platform More ❯

Job Title: Senior Backend Developer Location: Liverpool City Centre, Hybrid working available Salary: Up to £75,000 per annum depending on experience Job Type: Permanent, Full Time Hours: 37.5 hours per week, Monday to Friday, 9am to 5:30pm The Acorn Group are looking for a highly skilled, experienced Backend developer to join our team. … We are looking for a developer that has experience developing scalable applications using the latest .Net Technologies. You will have the chance to work on complex projects involving large datasets, message bus architectures, and streaming large sets of data. What you'll be doing: Application Development: Design, develop, and maintain robust applications using NET 8 and C#. Implement and … message queuing and handling. You will handle large datasets using MongoDB, Azure Cosmos DB, MySQL, and MS SQL Server. You will Work closely with cross-functional teams to define backend requirements, design scalable solutions, and implement new features. Ensure seamless integration with upstream services. Identify bottlenecks and bugs, and devise solutions to mitigate and address these issues. What we 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. … And are 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 … 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 ❯

Senior Backend Engineer C#/.NET High-Trust, High-Autonomy SaaS Up to £70,000 + generous benefits Hybrid (1 day a week onsite - Central Manchester) Our client is a respected SaaS company delivering robust, high-volume software platforms used across the UK and increasingly abroad. Their mission is to simplify financial and transactional processes with clean, elegant … engineering. You wont find bloat, bureaucracy, or outdated tech here just small, focused teams solving tough problems at scale. Theyre hiring a senior C# back-end engineer to help lead feature development across some of their most strategically important product areas. Why youll want this job: Youll work on systems that require performance, precision, and resilience powering everything from … year of service Access to learning platforms, books, and conferences Inclusive, feedback-driven engineering culture Genuinely nice people. No egos, no blame, no silos. If youre a strong .NET developer who wants to work on software that matters in a company that respects its engineers this is worth a chat. More ❯

Senior Backend Engineer C#/.NET High-Trust, High-Autonomy SaaS Up to £60k + generous benefits Hybrid (1 day/month onsite Midlands HQ) Our client is a respected SaaS company delivering robust, high-volume software platforms used across the UK and increasingly abroad. Their mission is to simplify financial and transactional processes with clean, elegant engineering. … You wont find bloat, bureaucracy, or outdated tech here just small, focused teams solving tough problems at scale. Theyre hiring a senior C# back-end engineer to help lead feature development across some of their most strategically important product areas. Why youll want this job: Youll work on systems that require performance, precision, and resilience powering everything from lender … year of service Access to learning platforms, books, and conferences Inclusive, feedback-driven engineering culture Genuinely nice people. No egos, no blame, no silos. If youre a strong .NET developer who wants to work on software that matters in a company that respects its engineers this is worth a chat. More ❯

Over the years, we have experienced explosive growth - which means we need more rock stars to join our quest for total world domination. We are looking for an awesome Senior Java Backend Developer to join our growing team. The role isa hybrid based one in the UK (St Albans), Malta, or Gibraltar, fullyremote from EU is an More ❯

Due to year-on-year growth the Acorn Group are looking for a highly motivated Senior Backend Developer with proficiency in .NET Technologies to join our innovative team within our Telematics squad. We are looking for someone to have strong experience in developing robust applications using .NET technologies whilst having strong knowledge of modern software development practices. … will be exciting and innovate projects that will span across scalable systems, microservice architectures and data driven solutions all whilst working with a talented cross-functional team. Job Title: Senior Backend Developer Location: Liverpool City Centre with hybrid working available Working hours: 37.5 hours per week, Monday to Friday 9am - 5:30pm What you will be doing More ❯

depending on experience + other benefits Location Stafford - Hybrid This is a Permanent , Full Time vacancy that will close in a month at 23:59 BST . The Role Senior Back-End Developer (C#) Location: Hybrid - Monthly in-office time (Staffordshire) UK-based Salary: Competitive, based on experience Contract: Full time Permanent Who We Are At Codeweavers, we … C# to join our growing engineering team. You'll play a hands-on role in designing and delivering reliable, well-engineered services, while contributing to a strong and supportive developer culture. This isn't a job where you'll just be handed a spec. You'll collaborate with product owners, internal users, and other engineers to deeply understand the … not accept unsolicited CVs sent to the recruitment team or directly to a hiring manager. We will not be responsible for any fees related to unsolicited submissions. Aneliese Platts Senior Designer "The people that work here are what sets Cox Automotive apart. We genuinely work as a team, and I feel the same level of support everywhere in the More ❯

Salary: £100,000 - £100,000 per year Requirements: Excellent knowledge of Node.js with Nest.js Excellent knowledge of TypeScript Proficiency in English Responsibilities: Design and maintain scalable backend services using Node.js (Nest.js) and TypeScript for decentralized exchanges Write clean, secure, and well-tested code Technologies: Backend TypeScript Microservices Node.js JavaScript More: We are a cross-chain, multi-wallet, non More ❯