1 to 25 of 45 Permanent C# .NET Developer Jobs in London

Social network you want to login/join with: Sr. C#.Net (core) developer to support support team in delivering bug/fixes, operational enhancements, and new functionality to existing in-house software, London col-narrow-left Client: S.i. Systems Location: London, United Kingdom Job Category: Other - EU work … permit required: Yes col-narrow-right Job Reference: ddd7fb030e85 Job Views: 3 Posted: 29.06.2025 Expiry Date: 13.08.2025 col-wide Job Description: Our valued client is looking for a Sr. C# .Net (core) developer to support support team in delivering bug/fixes, operational enhancements, and new functionality to existing in-house software This is a … Solutions Support team(s) and contribute to Level 3 Support activities for Incident and Problem resolution as required Must have: 7+ years’ experience building APIs and web applications in C# (.netcore) 5+ years’ experience programming for SQL Server and EF Core 3+ years designing, coding, and testing single-page applications utilizing the Angular v4+ framework, utilizing Bootstrap v4/ More ❯

Senior Technical Java and C# .net Software Developer We are currently recruiting a Java with C# .net Senior Software Developer – who can be the lead in the team. You must have at least 5 to 7 years proven track record of developing software with Java and C# .net … risk identification and risk mitigation tactics associated with the designs. Role-specific knowledge: · 5+ years of senior technical lead. · 5+ years of strong hands-on experience as a developer working on JAVA or .NET Framework standards and technologies - C#.NET, ASP.NET, AngularJS, SQLServer, Web Services, Cloud Platforms, AJAX, JQUERY, XML/JSON, HTML, CSS · Retail/digital More ❯

together. If you want to advance the world of fintech, we’d like to ask you: Are you FIS? About the role: We are looking for an experienced Senior C# .NET Developer to help grow and enhance our PTP software platform. The candidate will work on strategic enhancements to the platform as well as on … Platform is a leading-edge, cloud-based Securities Processing solution that provides trade lifecycle processing for a wide range of global financial institutions. About the team: As a Senior C# .NET Developer, you’ll be part of our PTP Platform development group. The group is broken into smaller scrum teams that each hold responsibility for … of system functionality. You’ll become involved with all phases of the development lifecycle and take ownership of key functional areas. What you will be doing: As a Senior C# .NET Developer, you will be involved in: Analysis of user requirements and translation into solution design using the most appropriate technique for the job (including More ❯

Senior C# Developer/Software Engineer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Senior C# … from home three days a week. About you: You are an experienced Software Developer/Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge … and problem solving skills alongside organisation and planning abilities You have business acumen and advanced communication/stakeholder management skills What's in it for you: As a Senior C# Developer/Software Engineer you will earn a competitive package including: Salary to £100k Bonus (c20%) Pension (5% employer contribution) 25 days holiday (increasing to 27 after More ❯

Senior C# Developer/Software Engineer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Senior C# … from home three days a week. About you: You are an experienced Software Developer/Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge … and problem solving skills alongside organisation and planning abilities You have business acumen and advanced communication/stakeholder management skills What's in it for you: As a Senior C# Developer/Software Engineer you will earn a competitive package including: Salary to £100k Bonus (c20%) Pension (5% employer contribution) 25 days holiday (increasing to 27 after More ❯

Social network you want to login/join with: col-narrow-left Client: S.i. Systems Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: 949f7fad5f6f Job Views: 4 Posted: 29.06.2025 Expiry Date More ❯

Summary: A boutique prop trading firm with a strong focus on high quality technology and systematic and quant trading models are looking for a Senior C# Developer to join their small, agile, London-based team. With zero red tape or bureaucracy often associated with bigger buy-side firms and investment banks, this London-based team of engineers … researchers, modellers and traders know how to get things done in a cutting-edge market. Working next to the business, the successful C# Developer will be working with vast, complex data sets, and will be building algorithmic trading models and infrastructure in C#/.NET Core and SQL, directly with London-based quants and … traders. Requirement s: Degree-level education in STEM subject, preference for Computer Science Strong programming experience in C# and SQL Experience with vast data sets with SQL (or equivalent) Experience in multi-threaded environments and networking (TCP/UDP) desired but not essential Benefits: Market-leading compensation including competitive annual bonus in London Greenfield projects available with opportunities to More ❯

Social network you want to login/join with: Senior C# Developer.Net AWS - FinTech, London col-narrow-left Client: Client Server Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: Job Views: 5 Posted: 27.06.2025 Expiry Date: 11.08.2025 col-wide Job Description: Senior C# Developer/Software Engineer … C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Senior C# Developer you will architect and build highly … from home three days a week. About you: You are an experienced Software Developer/Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge More ❯

/50 between back and front end design. This role is primarily home-based and may occasionally require out-of-hours support. Key Responsibilities Design and develop applications using C#, .NET Core, and React. Follow and help define software development standards and best practices. Work with test-driven development, automated testing, and CI/CD pipelines. Support … contribute to various development projects. Collaborate with third-party software providers throughout the development lifecycle. Provide technical guidance and mentorship to less experienced developers. Required Skills Strong experience with C#, .NET Core, Azure, and test automation. Proficiency in JavaScript and a modern front-end framework (React preferred). Familiarity with microservices, containerisation, and site reliability engineering. Solid More ❯

/50 between back and front end design. This role is primarily home-based and may occasionally require out-of-hours support. Key Responsibilities Design and develop applications using C#, .NET Core, and React. Follow and help define software development standards and best practices. Work with test-driven development, automated testing, and CI/CD pipelines. Support … contribute to various development projects. Collaborate with third-party software providers throughout the development lifecycle. Provide technical guidance and mentorship to less experienced developers. Required Skills Strong experience with C#, .NET Core, Azure, and test automation. Proficiency in JavaScript and a modern front-end framework (React preferred). Familiarity with microservices, containerization, and site reliability engineering. Solid More ❯

Senior C#.NET Developer … Front Office The Front Office (Fixed Income) software development team requires an agile and versatile specialist who is a team player with extensive expertise in .NET/C# software development. The role demands an experienced individual comfortable working closely with a variety of front office stakeholders globally. Role Details Title: Senior Developer (Software Engineer) Technical … Stack: C#.NET, .NET Core, SQL Server Type: Permanent Salary: £88,000 - £110,000 Location: London City and hybrid home working Focus: Front Office Fixed Income Role Summary Work closely with the Front Office (specifically within Fixed Income) to build and develop innovative software solutions. Reporting directly to the Head of Fixed Income IT Development, this role offers high More ❯

platform offers 24-hour access to global markets, allowing clients to trade seamlessly. We use cutting-edge technologies to deliver an exceptional trading experience. We are seeking a Senior C# .NET Web Developer with a strong focus on Kentico CMS to support our next stage of growth. The ideal candidate will have 6-7 years … of experience and demonstrate expertise in C# and Kentico CMS development. As a key member of the web development team, you will collaborate with the Marketing team, UI/UX experts, Product Managers, and other stakeholders, contributing to the development and maintenance of our complex and business-critical CMS platform. Responsibilities: Write and maintain high-quality code in C# … a broad modern technology stack. Actively participate in planning and strategy discussions with stakeholders. Requirements: Minimum 6-7 years of experience in web development with a strong focus on C# and Kentico CMS. Expertise in Kentico CMS, including portal engine, ASPX templates, workflows, macros (k#), BizForms, document types, and search configurations. Proven expertise in writing C# code specifically More ❯

Social network you want to login/join with: Sr. C# (.Net 8.0) developer to contribute to the delivery of new applications and to the maintenance and enhancement of existing applications, and be primarily responsible for technical issues, London col-narrow-left Client: S.i. Systems Location: London, United Kingdom Job Category: Other - EU work permit … required: Yes col-narrow-right Job Reference: 8b8ed3b5492d Job Views: 3 Posted: 29.06.2025 Expiry Date: 13.08.2025 col-wide Job Description: Our valued client is looking for a Sr. C# (.Net 8.0) developer to contribute to the delivery of new applications and to the maintenance and enhancement of existing applications, and be primarily responsible for technical … cloud and on-prem) Must have: Minimum of five years’ experience in software application development with progressively senior roles related to Senior Application Development; Mastery of the following technologies: C# (.Net 8.0) Git REST APIs with JSON payloads OAuth 2.0 Thorough and detailed understanding of application performance issues and troubleshooting/tuning techniques; Proven familiarity with software More ❯

OCS Consulting is now recruiting for an additional experienced .NET Programmer/Developer to work on a number of our client projects based in Switzerland or London, joining an experienced development team. OCS undertakes business software development and support contracts for our clients and as such require experienced .NET … Programmers/Developers to join us and help expand our growing division. Candidates must have 5+ years Microsoft Web and Client/Server application development and support experience using: C# and/or VB.Net ASP.NET nHibernate MS SQL Server with strong SQL and Stored Procedures. Desirable complementary technical skills are: Analysis and design/UML Graphic design/Photoshop More ❯

C# .net Developer – Insurance Our Client is an insurance underwriter in the City of London. They are now looking to grow their software development team and are looking to recruit a C# .net Software Developer. You will have at least 5 to 7 years expertise in developing complex software with C#. A … strong mathematical background would be advantageous but not required. Must have excellent communication and interpersonal skills. Expert in C# Development coupled with Java/jQuery Web development Web API, CSS. You will have solid SQL Server experience (stored procedures, table design and some maintenance). Microsoft Office including VBA and advanced skills in Excel and HTML/IIS. Develop … for our SharePoint Applications. The ideal candidate will have a drive to succeed, take part in IT strategy and work in a technology rich and agile environment. The developer will be part of a small team with responsibilities for ensuring the business has full support regarding IT systems. Key aspects of the role will be to: Initiate and More ❯

London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: d97cb09fae98 Job Views: 3 Posted: 29.06.2025 Expiry Date: 13.08.2025 col-wide Job Description: C# Developer in Test/Automation Engineer (C# .Net TypeScript) London/WFH to £85k Do you enjoy breaking things to see how they work … itself on the quality of its first class solutions with 99.999% uptime and ability to deliver thousands of trade prices with millisecond latency. Your day to day: As a C# Developer in Test you will focus on automated testing of newly developed backend software, you'll be using a variety of automation tools and coding with C# … you can you enjoy a range of facilities including large kitchen, café, roof top bar, showers and all the latest kit to work on. About you: You have strong C# or TypeScript coding skills (will also consider Java or other OO language) You have experience of developing and testing software using Microsoft technologies (.Net, SQL Server, Windows More ❯

Summary: A London-based hedge fund with a specialisation in quant and systematic trading are looking for a senior C# developer to join their London-based, agile team. Working on complex quantitative modelling and solutions, the successful C# developer will be working with the latest technologies in an agile and highly diverse environment. Technology … includes the latest version of C#/.NET Core, SQL and cloud technology. Requirements: STEM education Proficiency in C#/.NET Core Experience with low latency, scalable software and distributed computing is a plus Benefits: Competitive salary and performance-related bonus Highly flexible working environment in London Extremely diverse culture and working alongside top … engineering talent, globally. Contact If you're interested in C# development roles in London, please get in touch! Rosie Griggs rosie.griggs@oxfordknight.co.uk linkedin.com/in/rosie-oxfordknight #J-18808-Ljbffr More ❯

Job Title: C# Developer/Software Engineer (C# .Net SQL) Location: London (onsite) Salary: Up to £180k+ Client: Client Server Posted: 23.05.2025 Expiry Date: 07.07.2025 Job Description Join a leading Hedge Fund managing over $17 billion as a C# Developer working on complex algorithmic trading systems. Collaborate with finance and tech … London office with excellent facilities. About You Academic excellence with a minimum 2.1 in a STEM degree from a top-tier university and A grades at A-levels Strong C# .Net skills, including .Net Core; Java, Python, or C++ experience considered if willing to switch to C# Solid knowledge of SQL databases Understanding of More ❯

.Net Developer/Software Engineer (C# TypeScript) London/WFH to £85k Would like to progress your career as a .Net Developer, working on a modern, web based, tech stack with continual learning and development opportunities as part of a diverse team? You could be joining a global FinTech consistently voted … you'll collaborate to design and develop new features and enhancements to the company's flagship web based trading product. You'll focus on backend systems using C# and TypeScript but will also have exposure to front end components in Angular and React within a TDD environment. Location/WFH: You can work from home most of … you can you enjoy a range of facilities including large kitchen, café, roof top bar, showers and all the latest kit to work on. About you: You have backend C# .Net, ASP.Net MCV application development skills You also have experience with TypeScript, Angular or React You have a good understanding of Docker for Containerisation You have a More ❯

Yes col-narrow-right Job Reference: 0e6bcab2a643 Job Views: 4 Posted: 25.06.2025 Expiry Date: 09.08.2025 col-wide Job Description: .Net Developer/Software Engineer (C# TypeScript) London/WFH to £85k Would like to progress your career as a .Net Developer, working on a modern, web based, tech stack with … you'll collaborate to design and develop new features and enhancements to the company's flagship web based trading product. You'll focus on backend systems using C# and TypeScript but will also have exposure to front end components in Angular and React within a TDD environment. Location/WFH: You can work from home most of … you can you enjoy a range of facilities including large kitchen, café, roof top bar, showers and all the latest kit to work on. About you: You have backend C# .Net, ASP.Net MCV application development skills You also have experience with TypeScript, Angular or React You have a good understanding of Docker for Containerisation You have a More ❯

C# Developer/Software Engineer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist 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 C# Developer you'll collaborate … 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 … entrepreneurial with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a C# Developer/Software Engineer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly More ❯

C# Developer/Software Engineer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist 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 C# Developer you'll collaborate … 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 … entrepreneurial with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a C# Developer/Software Engineer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly More ❯

Join to apply for the C# Developer .Net SQL - Quant Trading role at Free-Work UK . This range is provided by Free-Work UK. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range C# Developer/Software Engineer (C# … 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 C# Developer, you'll collaborate with a team of highly intelligent technologists and finance professionals to develop algorithmic trading systems using a modern tech stack, with opportunities for … minimum 2.1 in a STEM discipline from a top-tier university (i.e., Russell Group or top 100 global university), backed by A grades at A-level. You have advanced C# .Net programming skills including .Net Core (considering candidates with Java, Python, or C++ backgrounds willing to transition to C#). You possess a strong More ❯

C# Developer/Software Engineer (C# .Net SQL) *London onsite* to £180k+ Ensure you read the information regarding this opportunity thoroughly before making an application. Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over … billion under management. As a C# Developer you'll collaborate with a team of highly intelligent technologists and finance professionals to develop algorithmic trading systems working with a modern tech stack, with opportunities for technical ownership from day one. You'll partner with Quant teams to help architect valuation, risk and pricing systems, delivering massively scalable, high … 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 More ❯

Software Developer/Engineer (C# .Net SQL) *London onsite* to £180k+ Are you a technologist 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 Software Developer you'll collaborate with a team … 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 … care for elderly relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this Software Developer/Engineer (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 More ❯