1 to 25 of 34 Permanent Senior C# Software Engineer Jobs in the UK

Senior C# Software Engineer Are you a talented C# and Azure developer ready to take ownership of innovative projects across Web, Desktop, and Cloud environments Our client, a well-established and forward-thinking software development company, is expanding its team and seeking an exceptional Senior C# Software … role - it’s a chance to lead projects, influence architecture, and make a measurable impact on the products you help deliver. About the Role As a Senior C# Software Engineer, you’ll play a key role in delivering high-quality, scalable, and performant software across a range of cutting-edge systems … a team of talented developers and stakeholders, contributing to technical decisions and ensuring best practices are followed throughout the development lifecycle. Tech Stack You’ll Work With Languages & Frameworks: C#, .NET Core, ASP.NET Core MVC, Web API Cloud & Data: Azure Functions, Azure Storage, Cosmos DB, Azure SQL UI & Front-End: WPF, Blazor, SignalR, Skia DevOps & Integration: Azure DevOps, CI More ❯

Are you an experienced Senior Software Engineer - C# actively looking for a new role? Do you live in the Hertfordshire area or would love the opportunity to relocate and work in one of the UK's most exciting tech hubs? If so, my client has a superb role available to strengthen their R … in in all aspects of design, implementation and debugging of software to bespoke robotic applications. In this experienced Senior Software Engineer - C# job based in Royston you will be responsible for the following: Design user interfaces that are both intuitive and easy to navigate. Oversee the complete software development … lifecycle for new projects, taking accountability for the software aspects of assigned responsibilities. The successful applicant for this Senior Software Engineer - C# job based in Royston you must be: Proficient in C# and .NET. Have a 2:1 or above degree in electronic engineering, software engineering, or a More ❯

Senior Software Engineer/Developer (C# .Net) Newcastle onsite to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality of life (there's also great restaurants and bars … Software Engineer you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment using the latest versions of C# .Net to produce high quality code. You'll join colleagues, many of whom have recently relocated themselves, in brand new Central Newcastle offices on a full-time basis (Monday … Computer Science or similar technical discipline from a world top ranked/Russel Group university, backed by A s and As at A-level You have expertise with modern C# .Net Core, Python skills would also be of benefit You have a strong knowledge of modern software engineering best practices and have experience across the full software More ❯

Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality of life (there's also great restaurants and bars!)? You … Software Engineer you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment using the latest versions of C# .Net to produce high quality code. The company has ambitious growth plans, this is a great opportunity to be involved from the ground up and progress your career. Location … backed by A*s and As at A-level You're a technologist who enjoys collaborating and problem solving, working on complex, distributed systems You have expertise with modern C# .Net Core, Python skills would also be of benefit You have a strong knowledge of modern software engineering best practices and have experience across the full software More ❯

Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality of life (there's also great restaurants and bars!)? You … Software Engineer you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment using the latest versions of C# .Net to produce high quality code. The company has ambitious growth plans, this is a great opportunity to be involved from the ground up and progress your career. Location … backed by A*s and As at A-level You're a technologist who enjoys collaborating and problem solving, working on complex, distributed systems You have expertise with modern C# .Net Core, Python skills would also be of benefit You have a strong knowledge of modern software engineering best practices and have experience across the full software More ❯

Senior Software Engineer/Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery and a better quality of life (there's also great restaurants and bars!)? You … Software Engineer you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment using the latest versions of C# .Net to produce high quality code. The company has ambitious growth plans, this is a great opportunity to be involved from the ground up and progress your career. Location … backed by A*s and As at A-level You're a technologist who enjoys collaborating and problem solving, working on complex, distributed systems You have expertise with modern C# .Net Core, Python skills would also be of benefit You have a strong knowledge of modern software engineering best practices and have experience across the full software More ❯

a leading name in defence, aiding Governments, Nations and Societies to defend themselves in an ever-evolving world of cyber crime. We are currently looking for an experienced Senior Software Engineer to join our prestigious Government and Law Enforcement sectors as they continue to see continuous growth and success. A Successful Senior Software Engineer Will Have: Eligibility for SC clearance (British Passport holders). Strong object-oriented programming principles in Java or Python . Knowledge of cloud development on a AWS Experience in hosting and orchestration using Docker , Kubernetes or AWS Autoscaling Groups. Senior Software Engineer Key Details: Discretionary bonus. … Hybrid Working. If this role of Senior Software Engineer sounds like a fit for you, make sure to click apply now! If you'd like to discuss the Senior Software Engineer role further, make sure to get in contact with Zachary Phillips at Anson McCade for a private More ❯

Senior Software Engineer – C# Salary: Up to £100,000 + Benefits Location: Royston (Hybrid) Employment Type: Permanent Are you a seasoned software engineer who thrives on solving complex problems, setting technical direction, and mentoring others? Our client, an innovative and forward-thinking technology business based in Royston, is looking … for a Senior Software Engineer to play a pivotal role in scaling their cutting-edge products to the next level. This is a hybrid position with the opportunity to work part-remote while being part of a highly collaborative and ambitious team. Key Responsibilities Lead by example in implementing best practice software … and maintainability standards. Desirable Experience & Skills Strong candidates are likely to bring most (but not all) of the following: Experience in software engineering, with deep expertise in C# and .NET. Experience with Linux, Python, and Azure DevOps. A proven track record in start-ups/scale-ups would be advantageous Excellent communication skills and the ability to More ❯

Role : Java Software Engineer Salary: Up to 95,000 +10% Bonus Location: London (2 days a week) Key Skills: Java 17+, SpringBoot, React/Typescript, AWS This is a great opportunity for a Senior Java Software Engineer to a travel experiences business. Youll lead backend services and API integrations with … a huge number of 3rd partys across their web and mobile platforms supporting millions of transactions weekly. Responsibilities as the Senior Java Software Engineer: Advocate for best coding practices within the team Uphold development standards and prioritize best coding practices Experience needed as the Senior Java Software Engineer … services (preferably AWS) A passion for ensuring best practices and coding excellence are adhered to Experience leading feature development/projects end-to-end If you're a Senior Java Software Engineer who has experience working across mobile applications. More ❯

Senior Software Engineer National Security - SC Clearable - Python - AWS Role: Senior Software Engineer Location: Bristol/Hybrid Work Clearance: SC Cleared/Eligible for SC Salary: £55,000 - £70,000 About the Role We re seeking talented Senior Software Engineers with strong … to join Agile delivery teams supporting a range of complex and high-impact Central Government and Critical National Infrastructure projects. You ll help design, develop, and deploy bespoke software solutions that deliver real-world mission value. You ll gain hands-on experience across the full software development lifecycle from concept through delivery working with modern technologies … and open-source tools in secure cloud environments. What You ll Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public More ❯

Senior Software Engineer National Security - SC Clearable Role: Senior Software Engineer Location: Bristol - Hybrid Work Clearance: SC Cleared/Eligible for SC Salary: 55,000 - 70,000 About the Role Were seeking talented Senior Software Engineers to join Agile delivery teams supporting a range … of complex and high-impact Central Government and Critical National Infrastructure projects. Youll help design, develop, and deploy bespoke software solutions that deliver real-world mission value. Youll gain hands-on experience across the full software development lifecycle from concept through delivery working with modern technologies and open-source tools in secure cloud environments. What Youll … Do Design, develop, and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the More ❯

Senior Software Engineer required by an established technology company located in Staines. Hybrid working - three days per week in the office. The Senior Software Engineer will focus on developing and maintaining SDKs for for four key products spanning JavaScript (TypeScript), Roku (BrightScript), Android (Java) and iOS (Objective-C … . The Senior Software Engineer will be the "code owner" for JavaScript and Roku SDKs. Being "code owner" for JavaScript and Roku SDKs Helping define software development practices, policies & tooling Strong JavaScript knowledge Commercial experience with Java and/or Objective-C Version control and other core software engineering skills More ❯

Senior Software Engineer Location: Remote with Sheffield HQ visits 6 times a year Annual Salary: £60,000- £75,000 We are currently looking for Senior Software Engineers that have experience with our Backend tech stack (TypeScript, Node & AWS) Join Our Engineering Evolution at Twinkl At Twinkl, we're … not just building software - we're transforming how millions of educators and learners interact with educational content and resources worldwide. By creating adaptable, comprehensive learning tools, we're breaking down educational barriers. We believe in empowering the next generation with the skills and resources they need to succeed, no matter their geographic or economic background. We re not … just sharing resources; we're building a global learning community. As we scale our platform to serve parents, teachers, and students across the globe, we're seeking exceptional Senior Software Engineers to help drive our technical evolution. We're in the midst of an exciting transformation, completely rebuilding our experience from the ground up using React More ❯

Senior Software Engineer Location: Remote with Sheffield HQ visits 6 times a year Annual Salary: £60,000- £75,000 We are currently looking for Senior Software Engineers that have experience with our Backend tech stack (TypeScript, Node & AWS) Join Our Engineering Evolution at Twinkl At Twinkl, we're … not just building software - we're transforming how millions of educators and learners interact with educational content and resources worldwide. By creating adaptable, comprehensive learning tools, we're breaking down educational barriers. We believe in empowering the next generation with the skills and resources they need to succeed, no matter their geographic or economic background. We re not … just sharing resources; we're building a global learning community. As we scale our platform to serve parents, teachers, and students across the globe, we're seeking exceptional Senior Software Engineers to help drive our technical evolution. We're in the midst of an exciting transformation, completely rebuilding our experience from the ground up using React More ❯

Senior Software Engineer required by a high-tech company located in Fareham. Due to continued success they are looking to grow their software team developing products for Android platforms. The successful Senior Software Engineer is likely to have a degree in Computer Science or similar subject and commercial experience developing Android applications using .NET MAUI. C# SQL C++ Linux More ❯

Software Engineer (Java Microservices) Package up to 130k + Excellent Benefits An exciting opportunity has arisen for a Senior Software Engineer (Java Microservices) to join one of the UKs leading financial institutions, driving innovative digital solutions that power millions of customer interactions every day. Youll be joining a talented, forward … performance services within a major transformation programme. This is a fantastic opportunity for a technically minded individual with strong server-side experience to design, build, and deploy resilient software solutions that make a real impact. Design, develop, test, and deliver high-quality, maintainable code across the entire software development lifecycle. Apply Agile methodologies to drive continuous … improvement, innovation, and rapid delivery of business value. Contribute to the evolution of software architecture and design, using experimentation and prototyping to shape modern solutions. Champion automation across build, testing, and deployment processes to enhance quality, reliability, and development efficiency. Strong background in developing Java-based microservices, leveraging modern frameworks such as Spring Boot and Project Reactor. Experienced More ❯

Senior Software Engineer (Data-Centric) Manchester or South London (Hybrid 2 x a week in office) 70,000 85,000 + 10% bonus + excellent benefits Our client is a global self-defence intelligence and technology organisation helping governments and defence agencies act with confidence. They use AI, graph databases, cloud, and search technologies … to deliver faster, smarter decision-making. Were seeking a Senior Software Engineer to join a growing, cross-functional technology team. Design, develop, and deliver high-quality, scalable software solutions. Work within an agile team on applications, APIs, and services used globally. Develop in one or more core technology areas: Graph databases (GraphDB … ML/AI frameworks (SageMaker, Bedrock) Cloud-based data engineering (AWS) Build and maintain cloud-native data pipelines, ensuring data quality, accuracy, and reliability. 5+ years experience in software or backend engineering. Proven ability to deliver reliable, scalable systems using cloud technologies (AWS preferred). Experience with complex data systems - structured, unstructured, or graph-based. Work on advanced More ❯

Senior Software Engineer (Node.js/TypeScript) They re building a platform that s already making a huge impact and are now looking for a Senior Software Engineer to help shape the next stage of their technology. You ll work across design, product and engineering to build scalable backend More ❯

Senior Software Engineer At Nandos, were building scalable, data-driven solutions that keep our restaurants safe, compliant, and thriving every day. This is more than just code its about creating technology that directly supports the people running our restaurants and the communities we serve . The Safety & RMD Team Were looking for a Senior Software Engineer to join our Safety & Restaurant Master Database (RMD) team. We build two critical product lines: safety and compliance systems that help restaurant teams report incidents and manage compliance, and the Restaurant Master Database the single source of truth for operational data that drives decision-making across Nandos. Our team is collaborative, supportive … your skills, and develop your career in an environment where inclusion, teamwork, and progression are central to everything we do. Youll have clear opportunities to grow as an engineer and as a leader, with mentoring, training, and the space to take your career wherever you want it to go. Designing, building, and improving event-driven workflows using Cloud More ❯

Senior Software Engineer (Contract) Team: Digital Workplace Experience Contract: 612 months Our Digital Workplace Experience Team is on a mission to create beautifully simple, empowering digital tools that help our teams across restaurants and Central Support thrive every day. Were looking for a Senior Software Engineer (React Native More ❯

Senior Software Engineer (Node.js/TypeScript) Theyre building a platform thats already making a huge impact and are now looking for a Senior Software Engineer to help shape the next stage of their technology. Youll work across design, product and engineering to build scalable backend systems that are More ❯

Senior Software Engineer Hybrid London React Node.js Typescript GCP £90k + Share options La Fosse have partnered with a market leader in audio technology. Experience in modern web application development, TypeScript, Node.js, React.js, Next.js, JavaScript. 6+ years of commercial development experience. Extensive experience working with AWS OR GCP, Cloud Run, & Cloud SQL. Relational … and NoSQL databases experience. 33 days AL + Bank holidays Office perks, central London location The team get together 3 times a week in their Central London office. Senior Software Engineer Hybrid London React Node.js Typescript GCP £90k + Share options More ❯

Job Title: Senior Software Engineer Location: London (Hybrid/Remote options available) We are seeking a talented and motivated Software Engineer with 5+ years of experience to join our dynamic team based in London. You will be instrumental in developing, deploying, and maintaining scalable web applications using modern technologies. Design … develop, and maintain web applications using Python and Django Build and manage cloud infrastructure on AWS Collaborate with cross-functional teams to deliver high-quality software solutions Troubleshoot and resolve software defects and performance issues 5+ years of proven experience in Python and Django development Strong knowledge of AWS services and cloud architecture Good understanding of More ❯

We have an exciting opportunity for a Senior Software Engineer (C#) to join our Product & Tech team on a full-time, permanent basis. If you're a self-starter with a keen interest in software development and enjoy collaborating in a team setting, we want to hear from you. About the … efficient, stable and scalable software systems Work closely with Technical Leads and Product Owners to deliver business value Design, develop and maintain complex applications and services using C# and the .NET ecosystem Participate in and lead code reviews to ensure high code quality Champion HealthHero values and contribute to the continued success of the organisation What you … will bring: Solid understanding of core C# language features, including OOP, collections, exception handling, and asynchronous programming - we are using .NET 8 & 9 Cloud – We use Azure, but if you have experience in another major cloud we are happy to help you transfer your knowledge Experience designing REST APIs and event-driven applications Experience in developing front end applications More ❯

Software Engineer Python/FastAPI/React/Functional programming/Typescript Location: London, UK (Hybrid) Type: Full-time This startup is building a cutting-edge platform to transform how engineers design physical products. This company is a spin-out from one of the UK s most successful startups, built by top-tier engineers and developers … from industry leading teams. We re looking for a software engineer who enjoys writing clean, functional code and is genuinely passionate about real-world engineering not just building software, but helping change how things are designed and built. Frontend or Backend Python, FastAPI, Pydantic, PostgreSQL, Docker Frontend: React, TypeScript, Vite Functional programming, async APIs … for geometry, simulation, and data workflows Develop responsive, performant frontends using React and TypeScript Work closely with domain experts (engineers, designers) to translate complex physical problems into usable software features Follow functional programming practices to write testable, composable code Own features from idea to implementation to deployment Bachelor s degree in Computer Science, Engineering, Physics, Mathematics, or a More ❯