1 to 25 of 36 C# Software Engineer Jobs in London

Backend Software Engineer/Developer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed Software Engineer? You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management, earning substantial bonuses. As a Backend Software … front end work with JavaScript and React.js. Location: You'll be based in plush City office on a fulltime basis, Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals … Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Backend Software Engineer/Developer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose More ❯

Backend Software Engineer/Developer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed Software Engineer? You could be progressing your career in a senior, hands-on role at a global Asset Manager with c$3 million under management, earning substantial bonuses. As a Backend Software … front end work with JavaScript and React.js. Location: You'll be based in plush City office on a fulltime basis, Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals … Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Backend Software Engineer/Developer (C# .Net) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose More ❯

Backend Software Engineer/Developer (C# .Net Core Cloud CQRS) London/WFH to £85k Are you a technologist with strong backend C# .Net skills? You could be progressing your career at in a senior, hands-on role Backend Software Engineer role at a successful and scaling Retail FX Brokerage … Software Engineer you'll be designing and developing high quality, maintainable, and reliable code for a real-time, low latency trading systems built mostly in C# and React deployed to Azure. You'll focus on C# .Net backend development within an AWS environment, but also with exposure across the full technology stack in a … scratch. Location/WFH: You'll join colleagues in the London office Monday to Wednesday with flexibility to work from home Thursday and Friday. About you: You have strong C# .Net Core backend development experience You have a good knowledge of microservices and Cloud (AWS or Azure) experience, ideally you'll have some experience with Docker/Kubernetes, EKS More ❯

Backend Software Engineer/Developer (C# .Net Core Cloud CQRS) London/WFH to £85k Are you a technologist with strong backend C# .Net skills? You could be progressing your career at in a senior, hands-on role Backend Software Engineer role at a successful and scaling Retail FX Brokerage … Software Engineer you'll be designing and developing high quality, maintainable, and reliable code for a real-time, low latency trading systems built mostly in C# and React deployed to Azure. You'll focus on C# .Net backend development within an AWS environment, but also with exposure across the full technology stack in a … scratch. Location/WFH: You'll join colleagues in the London office Monday to Wednesday with flexibility to work from home Thursday and Friday. About you: You have strong C# .Net Core backend development experience You have a good knowledge of microservices and Cloud (AWS or Azure) experience, ideally you'll have some experience with Docker/Kubernetes, EKS More ❯

Software Engineer/Full Stack Developer (C# .Net React) London/WFH to £70k Are you a Full Stack Software Engineer with C# .Net and React skills? You could be progressing your career in a senior, hands-on role at a global tech company that provide data centric software … Software Engineer within a cross discipline Agile product team you will design and develop data centric software using a range of technology with C# .Net backend and TypeScript and React frontend; you'll also use a range of other technology in the stack including Snowflake, Azure, Python and SQL. The team has lots … through to delivery. Location/WFH: There's a hybrid work from home policy, with 1-2 days a week in the London office. About you: You have strong C# .Net backend skills You also have frontend development experience with React and/or TypeScript You have Azure cloud experience You have a data centric mindset, ideally with Snowflake More ❯

Software Engineer/Full Stack Developer (C# .Net React) London/WFH to £70k Are you a Full Stack Software Engineer with C# .Net and React skills? You could be progressing your career in a senior, hands-on role at a global tech company that provide data centric software … Software Engineer within a cross discipline Agile product team you will design and develop data centric software using a range of technology with C# .Net backend and TypeScript and React frontend; you'll also use a range of other technology in the stack including Snowflake, Azure, Python and SQL. The team has lots … through to delivery. Location/WFH: There's a hybrid work from home policy, with 1-2 days a week in the London office. About you: You have strong C# .Net backend skills You also have frontend development experience with React and/or TypeScript You have Azure cloud experience You have a data centric mindset, ideally with Snowflake 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 could be joining a … 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 could be joining a … 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 ❯

Backend Software Engineer/Developer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist Backend Software Engineer with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Backend Software … minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level You have advanced C# .Net programming skills including .Net Core (will also consider Java, Python or C++ background if happy to use C# going forward) You have a strong knowledge of SQL … relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Backend Software Engineer/Developer (C# .Net SQL) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer More ❯

Backend Software Engineer/Developer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist Backend Software Engineer with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Backend Software … minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level You have advanced C# .Net programming skills including .Net Core (will also consider Java, Python or C++ background if happy to use C# going forward) You have a strong knowledge of SQL … relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Backend Software Engineer/Developer (C# .Net SQL) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer More ❯

Backend Software Engineer/Developer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist Backend Software Engineer with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Backend Software … minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level You have advanced C# .Net programming skills including .Net Core (will also consider Java, Python or C++ background if happy to use C# going forward) You have a strong knowledge of SQL … relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Backend Software Engineer/Developer (C# .Net SQL) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer More ❯

Senior Software Engineer Blending Music, Science and Technology &##Senior Software Engineer &##Incubated Startup - Combining Music, Science and Tech &##Stack: Typescript, React, Node/Nest, AWS - FE Leaning (Rust in the stack) Incubated and backed by one of the largest music for media companies behind best known TV and Film soundtracks, they are … looking to transform personalised musical experience for mindfulness and wellness. We are looking for a Senior Software Engineer, proficient in Typescript & React with some Node + AWS experience to join a founding team of customer-centric, cross functional engineers. If you are a Senior Software Engineer looking to join a growing company … looking to use music, science and technology to transform wellbeing, this one is for you. Senior Software Engineer Blending Music, Science and Technology 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: Backend development experience, working with production … 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 Legacy to Modern C#, .Net SaaS Data A fast-growing SaaS business is investing heavily in its tech platform and building out a senior engineering hub in London. They re on the lookout for a Senior Software Engineer to help drive modernisation, set technical direction, and mentor squads … and fit for the future. Expect to spend plenty of time coding, alongside leading migrations and leading/mentoring 4 engineers. You will have complete autonomy for all things C# .NET in the business, including decision making on strategy around the direction of the products, the projects, leading the team and liaising with external consultancies etc. Design and build … complex apps with C# and .NET Core/Framework Lead migrations from Web Forms/ASMX to modern stacks (.NET Core, MVC, REST APIs) Partner with QA, Product, and DevOps to deliver reliable features in agile sprints Manage deployments across IIS and AWS Optimise SQL/T-SQL performance for production systems Strong background in C# and modern More ❯

Senior Software Engineer Opportunity - Tech for Good - Up to100k Base + Equity We're looking for a Full Stack Senior Software Engineer to join a mission-driven deep tech spin out from Imperial - think autonomous vehicle-level complexity, but applied to a completely new domain. The ideal candidate should have some iOS … experienceeither as an iOS developer or through exposure while working as a software engineer. London/Hybrid Software Engineering experience with strong fundamentals and a drive to learn. 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 database management More ❯

Full-Stack Software Engineer – C# .NET Business area: Platform Development team Permanent, Hybrid working Located: London, City *Priority hire, so moving quickly!* Talensa are working with a market leading Financial Trading platform company in the City looking to add a talented C# .NET developer to support and drive through platform maintenance, development and innovative … role, team and platform to work with!! Key tasks and responsibilities · Development and Testing: Develop new features, write unit and E2E tests and maintain the company's main software platform. · Coding Practices and Quality: Follow industry coding standards, striving for high-quality, self-documented code. · Debugging and Troubleshooting: Analyze issues, debug critical errors, and resolve bugs. · Better Engineering … be comfortable diving into challenges, and have a problem-solving mindset to deliver effective solutions for our clients and ensure the scalability and robust performance of our platform. Required C# .NET - some years experience: - Backend: DotNet, C#, EF Core - Databases: SQL Server - Frontend: TypeScript, JavaScript, Node.js, modern UI frameworks Additional Skills: - Experience with frameworks such as Angular (preferred More ❯

Full-Stack Software Engineer – C# .NET Business area: Platform Development team Permanent, Hybrid working Located: London, City *Priority hire, so moving quickly!* Talensa are working with a market leading Financial Trading platform company in the City looking to add a talented C# .NET developer to support and drive through platform maintenance, development and innovative … role, team and platform to work with!! Key tasks and responsibilities · Development and Testing: Develop new features, write unit and E2E tests and maintain the company's main software platform. · Coding Practices and Quality: Follow industry coding standards, striving for high-quality, self-documented code. · Debugging and Troubleshooting: Analyze issues, debug critical errors, and resolve bugs. · Better Engineering … be comfortable diving into challenges, and have a problem-solving mindset to deliver effective solutions for our clients and ensure the scalability and robust performance of our platform. Required C# .NET - some years experience: - Backend: DotNet, C#, EF Core - Databases: SQL Server - Frontend: TypeScript, JavaScript, Node.js, modern UI frameworks Additional Skills: - Experience with frameworks such as Angular (preferred More ❯

Full-Stack Software Engineer – C# .NET Business area: Platform Development team Permanent, Hybrid working Located: London, City *Priority hire, so moving quickly!* Talensa are working with a market leading Financial Trading platform company in the City looking to add a talented C# .NET developer to support and drive through platform maintenance, development and innovative … role, team and platform to work with!! Key tasks and responsibilities · Development and Testing: Develop new features, write unit and E2E tests and maintain the company's main software platform. · Coding Practices and Quality: Follow industry coding standards, striving for high-quality, self-documented code. · Debugging and Troubleshooting: Analyze issues, debug critical errors, and resolve bugs. · Better Engineering … be comfortable diving into challenges, and have a problem-solving mindset to deliver effective solutions for our clients and ensure the scalability and robust performance of our platform. Required C# .NET - some years experience: - Backend: DotNet, C#, EF Core - Databases: SQL Server - Frontend: TypeScript, JavaScript, Node.js, modern UI frameworks Additional Skills: - Experience with frameworks such as Angular (preferred More ❯

Full-Stack Software Engineer – C# .NET Business area: Platform Development team Permanent, Hybrid working Located: London, City *Priority hire, so moving quickly!* Talensa are working with a market leading Financial Trading platform company in the City looking to add a talented C# .NET developer to support and drive through platform maintenance, development and innovative … role, team and platform to work with!! Key tasks and responsibilities · Development and Testing: Develop new features, write unit and E2E tests and maintain the company's main software platform. · Coding Practices and Quality: Follow industry coding standards, striving for high-quality, self-documented code. · Debugging and Troubleshooting: Analyze issues, debug critical errors, and resolve bugs. · Better Engineering … be comfortable diving into challenges, and have a problem-solving mindset to deliver effective solutions for our clients and ensure the scalability and robust performance of our platform. Required C# .NET - some years experience: - Backend: DotNet, C#, EF Core - Databases: SQL Server - Frontend: TypeScript, JavaScript, Node.js, modern UI frameworks Additional Skills: - Experience with frameworks such as Angular (preferred More ❯

Senior Software Engineers TypeScript/Node.js/SQL/Kafka/GraphQL &##128205; Equities Trading Business No finance experience required. Miller Maxwell is assisting a leading equities trading business in expanding their core software engineering team. Based in their central London headquarters, the successful Senior Software Engineers will play a key role in the … design and development of their high-performance trading platform, which supports the execution and analysis of equity trades. &##Key Responsibilities for the Senior Software Engineer: Architect, design, and implement scalable backend services using TypeScript and Node.js . Develop and optimize SQL queries and database schemas for high-volume data processing. Integrate and manage Kafka for real … time data streaming and event-driven architecture. Collaborate with cross-functional teams including frontend developers, product managers, and QA engineers. Requirements for the Senior Software Engineer: &##Degree in Computer Science, Engineering, or a related STEM field. &##Minimum 5 years of commercial experience in backend development. &##Strong proficiency in TypeScript and Node.js . &##Solid experience with SQL More ❯

Senior Software Engineer (Python/AWS) Location: London or Manchester Employment Type: Full-time, Permanent About the Role Were looking for a Senior Software Engineer with deep experience in Python and AWS to help design, build, and scale distributed, data-driven Ad-Tech systems. Youll lead the delivery of cross-service features More ❯

Senior Software Engineer AI-Powered Real Estate Startup We re partnering with a fast-growing AI startup that s transforming how investors make decisions in real estate. Their cloud-native SaaS platform combines street-level data, financial modelling, and machine learning to deliver smarter, data-driven investment insights . As the Senior Software Engineer More ❯

Senior Software Engineer Capital Markets Scale-Up They're a fast-growing London-based technology company transforming how institutional players access and use market data in the global energy and commodities space. In an industry still reliant on manual workflows and legacy systems, they're building next-generation analytics and trading intelligence tools that bring automation … precision, and insight to pre-trade decision-making. Theyre looking for a Senior Software Engineer whos eager to take ownership of high-impact projects from idea to execution. Youll collaborate closely with product and engineering to design and deliver new greenfield features, contribute to architectural decisions, and help shape a high-performing, collaborative engineering culture. Take … end delivery of large-scale projects Tackle complex problems that require creative, scalable solutions Champion best practices for code quality, performance, and reliability 5+ years of hands-on software engineering experience Proven ability to take initiative and manage complex projects independently A tech-agnostic approach with proficiency in at least one major language (experience with functional programming is More ❯

Senior Software Engineer AI-Powered Real Estate Startup Were partnering with a fast-growing AI startup thats transforming how investors make decisions in real estate. Their cloud-native SaaS platform combines street-level data, financial modelling, and machine learning to deliver smarter, data-driven investment insights . As the Senior Software Engineer More ❯