10 of 10 Permanent C# Software Engineer Jobs in London

C# Software Engineer/Developer (Windows Desktop Trading Systems) London to £140k Are you a seasoned Software Engineer with strong C# desktop development skills combined with banking/financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a C# … support trading, operations, finance, compliance and investor relations, optimising system performance to ensure efficient real-time data processing, reporting and automation of operational workflows. You'll focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and/or Angular. This … flexibility to work from home once a week; there's a friendly and collaborative environment with casual dress code and a range of facilities. About you: You have strong C# desktop development experience on Windows within a banking or financial services environment You have a strong knowledge of SQL databases You have a good understanding of asset classes e.g. More ❯

Senior 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. As a Senior Software Engineer … 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 Senior 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 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 C# & .NET d/f/m London, City of London, GB, EC2R 8HP RWE Supply & Trading GmbH To start as soon as possible, full time/part time, permanent Functional area: IT/Digital Remuneration: tariff/non-tariff Department Insights It's an exciting time to join us! RWE Supply … trading and analysis communities as well as support functions and will become an ever increasing asset across the group in the future. You will work apply your expertise in C# and .Net to build robust data services within the Mix system and help us future proof our architecture from a security and technological perspective . This role is perfect … with strong skills in working with AWS environments. If this sounds appealing, then apply now! Your future responsibilities Design and develop scalable back-end services and APIs using both C# and .NET 8 Implement extraction and transformation logic within .NET environments. Utilize Python for data processing, automation, and specific application logic as needed. Work directly on the Market Data More ❯

Principal Software Engineer -C#/.Net,React Introduction: Are you searching for an opportunity to play a key role in driving the dramatic growth of a highly successful software company? At Poppulo, we're working on what's next in communications and workplace technology. As a pioneer in this industry, we understand that … Experience or enthusiasm for AI technologies, especially Large Language Models (LLMs), generative AI, or agentic coding tools, is strongly preferred. Key Responsibilities: Drive the migration and modernization of existing C#/.NET-based integration services to a contemporary web stack (TypeScript, NodeJS, React). Develop, maintain, and enhance scalable integrations and APIs to facilitate seamless third-party data exchange. … in integration and data transformation. Proven ability in migrating legacy systems to modern technology stacks. Practical experience or strong enthusiasm for AI and generative technologies. Strong experience with both C#/.NET and modern web technologies (TypeScript, NodeJS, React). Proficiency in relational databases (MS SQL) and data integration methodologies. Experience developing APIs and working with diverse third-party More ❯

C# Software Engineer - Open to any OO- Leading Discretionary Trading Fund This leading UK-based discretionary trading fund, boasting AUM of over $16 billion, is looking for a highly skilled C# developer to join their technology team. This team works directly with the researchers and quantitative professionals to solve the toughest of technical challenges … as they are encouraged to take ownership of technical projects, such as delivering massively scalable, high-performance computer operations which the whole firm will use. Although this is a C# role, candidates will be interviewed in their preferred language. Requirements: Minimum 2:1 degree in Computer Science or a related field Excellent programming skills, with an in-depth understanding … of C# desirable Experience with SQL databases Ability to own all aspects of development projects from start to finish Strong problem-solving ability and a desire to solve business problems Tech Stack: C# 9.0, .Net, SQL, React Contact If you're interested in C# roles, please get in touch! Henry Breeze henry.breeze@oxfordknight.co.uk linkedin.com/in/ More ❯

Endeavour Recruitment has an exciting opportunity for a skilled C# Software Engineer with WPF and MVC/MVVM experience to join our client. Our client has a site in Bristol and Sutton in Surrey, so either location is fine for a Hybrid worker, and they would also consider fully remote for the right person. Our … client provides award-winning products, solutions, and services powering enterprise software for hundreds of clients across four continents and fourteen countries. They have a world-class component content management platform as well as creating the documentation, online help, visual media, training materials, and other types of content required to compete at the highest level. The role: To develop … improve the development process. Learn new technologies and keep abreast of existing technologies. Work with QA and operations teams to identify and resolve customer issues. Skills: Developing applications with C#/.NET web and back-end functionality using Microsoft Visual Studio. Developing solutions with the Windows Presentation Foundation (WPF) framework for desktop applications. .NET, WPF, PRISM, Unit Testing, Async More ❯

We're looking for a Software Engineer to join the team working on Camo ( ). Camo helps you easily get great video for meeting, streaming, or recording, and it's available on Windows, Mac, iOS, Android, with more platforms in the pipeline. Camo was nominated for an Apple Design Award in 2023 and featured in Microsoft … working at a values-led, remote, indie business. Here's Aidan the CEO & founder talking about the role. You will: Build and enhance robust, accessible functionality in our native C# desktop apps Build new and delightful experiences for our users Help evolve our tooling, architecture and development practices Contribute to the product & design vision across the company We will … small, focused team of individual contributors, and like taking ownership of projects from initial planning to release. Wish there were more apps that felt 'just right'. Have strong C# and WPF skills, with familiarity working with a great stack: git, Nunit, Azure, etc. Have the ability and desire to learn, develop, and share new ideas, and implement those More ❯

Full-Stack C# Developer Sports Analytics & Trading | London (5 days in Office) Up to £130k+ Are you a C#/.NET developer who thrives in fast-paced, high-intellect environments? I'm hiring for a tight-knit, high-performing software team working at the intersection of sports analytics , automated trading , and modern software development … Central London - expect autonomy, ownership, and flexibility Greenfield projects - make architectural decisions and ship fast No prior trading or sports market experience required - just strong engineering skills Tech Stack C#/.NET (Latest versions) SQL Server , plus experience with Oracle or equivalent Bonus: exposure to JavaScript/React , multi-threading , or network programming (TCP/UDP) What You'll … scalable, performant code in a flat, agile structure Engage with real-time systems and data-heavy platforms (where accuracy is everything) What We're Looking For Solid experience with C# and the .NET platform Good grounding in SQL and relational database design Strong attention to detail and code quality Excellent written and verbal communication A scientific, curious mindset - and More ❯

Software Developer Location: London - Hybrid Contract OR Permanent Salary/Rate DOE 2 to 3 days a week onsite in London We are currently searching for multiple Software Engineers … for a leading Energy client to support the expansion of thier trading technology. This will be heavily involved with the build out of their ETRM capabilities. Experience needed in C# .Net Java Develop and customize Endur Integrate Endur with other systems (market data, risk engines, etc.) Commodities Troubleshoot and support live environments Devops, python scripting tools etc Please apply More ❯