17 of 17 Permanent Senior C# Software Engineer Jobs in London

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 ❯

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 ❯

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 ❯

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 ❯

Senior Engineer Data/Software - London - £90,000 - £130,000 My client are expanding their Data Science & Technology, the team builds the systems and tools that enable trading teams to analyze markets, forecast price movements, and manage risk with speed and precision. If you re passionate about engineering impactful solutions in a … local charities 23 days annual leave plus bank holidays Hybrid work model 3 days per week in the London office Collaborate directly with trading and analytics teams to engineer, optimize, and automate front-office workflows and analytical models. Develop robust Python-based services and APIs using modern frameworks, microservice architectures, and best-practice design principles. Design and maintain More ❯

leverage AWS for infrastructure This is a hybrid role where you'll be spending 2/3 days a week onsite in London 5+ years) in full-stack software Strong proficiency in Python for backend development. Experience with modern frontend frameworks (e.g., React, Vue, Angular). Solid understanding of database technologies (e.g., PostgreSQL, MySQL) and data Experience designing More ❯

is a hands-on role with real ownershipdesigning and building backend systems, collaborating with stakeholders, and shaping the technical roadmap across a suite of integrated platforms. NET Core and C# (including LINQ, JSON, IoC) Experience with Azure PaaS: Function Apps, Blob/Table Storage, Service Bus, Azure Search, API Management Comfortable working in an Agile environment using Wikis and More ❯

We are partnered with a high-growth, VC-funded Data Intelligence platform. Full Stack Environment: TypeScript, Node.js, React (Redux/Context API). A role focusing on full-stack architecture with some Data Pipelining. Paddington, 3 days a week on More ❯