1 to 25 of 27 Permanent C# Developer Jobs in London

Senior C# Developer/Software Engineer (C# .Net) London onsite to £150k Opportunity to progress your career in a senior, hands-on C# Developer role at a global Asset Manager with c$3 million under management. As a Senior C# Developer within the trading engine team you'll collaborate to … ll often be collaborating with he strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on C# .Net backend and API development although you'll also have elements of 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 such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management More ❯

JUser: :_load: Unable to load user with ID: 987 Job Summary Ambitious C# Developer looking to level-up! Ambitious C# Developer looking to level-up! Ambitious C# Developer looking to level-up! Posted Friday, 24 March 2017 Ambitious C# Developer looking to level-up! Are you a C# … the heart of Shoreditch? Yes, then seriously consider applying for this; With continued ambition, expansion and demand, our established media client has a great opportunity for a go-getting C# Developer. From the outset you will be working on a range of web-based solutions and with many more projects coming online, you will be quickly expanding your skills … before long you will be voicing your own ideas, fleshing them out and if they're good, getting them backed all the way! Right now you are comfortable with; C# SQL HTML CSS JQUERY SQL And soon after starting this role, you will be comfortable with; Web API IIS and Azure administration GIT/Bitbucket JIRA Google Analytics to More ❯

Senior C# Developer/Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows 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 Senior C# Developer … 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 ❯

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 with a … 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 … 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 ❯

.NET C# Developer - FX Options - Pricing - Quant Libraries Contact email: Job ref: C Duration: Permanent Startdate: Negotiable C# Developer - FX Options Trading Technology We are currently seeking a skilled C# Developer to join the FX Options Trading Technology team at a leading global investment bank. This is a front-office role … for real-time pricing logic Partner directly with front-office users including traders, quants, and structurers to gather requirements and deliver solutions Required Skills and Experience Strong experience in C# development Proficiency in SQL Proven ability to work with large-scale, complex codebases Experience integrating with or working alongside quantitative libraries or models Solid understanding of FX Options and More ❯

Lead Software Developer C# & .Net - CPS - G7 Full-time (Permanent) National - £56,640 - £65,490 London - £60,990 - £71,380 + £3150 RRA Published on 13 August 2025 Deadline 31 August 2025 Location Please note that this post can be based in any location within England and Wales, where a CPS office is located. Whilst it's … is a hands-on leadership role where you combine deep technical expertise with strategic influence, mentor others, and drive delivery across high-impact projects. You bring extensive experience in C# (ideally C# 12) and .NET 6-8, with a strong track record in designing and building scalable backend services and RESTful APIs using ASP.NET. Your understanding of cloud … in this role. The start date is expected to be 8-12 weeks after the application deadline. Your roles and responsibilities : You have an in-depth technical understanding of C# and .NET, and coach and mentor others in their use. Proficient in a range of development tools and skills relevant to your specialism, you are a committed learner who More ❯

.NET Developer - Financial Trading - C#, React - London (Tech stack: .NET Developer, .NET 9, C#, React, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client, a market-leading financial trading firm, renowned for its innovation, lightning-fast technology and elite engineering culture, is seeking talented .NET Developer to join their award … to join a company where tech is not a support function, it is the business. The ideal candidate .NET Developer will have commercial experience working with .NET, C# and React.. Prior exposure to trading systems or financial services is highly desirable due to the nature of the role. Our client will provide training in: .NET 9, JavaScript … low-latency trading platforms and tools. This is a greenfield project and a chance to leave your mark on a business-critical system from day one. All .NET Developer positions come with the following benefits: Company shares 15% pension contribution Bupa private healthcare 3 hours per week of personal development time £4.5k annual training allowance 27 days holiday More ❯

.NET Developer - Financial Trading - C#, React - London (Tech stack: .NET Developer, .NET 9, C#, React, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client, a market-leading financial trading firm, renowned for its innovation, lightning-fast technology and elite engineering culture, is seeking talented .NET Developer to join their award … to join a company where tech is not a support function, it is the business. The ideal candidate .NET Developer will have commercial experience working with .NET, C# and React.. Prior exposure to trading systems or financial services is highly desirable due to the nature of the role. Our client will provide training in: .NET 9, JavaScript … low-latency trading platforms and tools. This is a greenfield project and a chance to leave your mark on a business-critical system from day one. All .NET Developer positions come with the following benefits: Company shares 15% pension contribution Bupa private healthcare 3 hours per week of personal development time £4.5k annual training allowance 27 days holiday More ❯

months contract with a global manufacturing client. The C# developer will be involved in the development and architecture of applications and services that process local data and integrate third-party web services. The successful C# developer will have proven and demonstrable experience with application development using C#. The Role: Software architecture, design, and development More ❯

Overview Company Global Investment Firm Position Senior C# Developer Impact Market Data Ingestion, Analytics, and Distribution Size Elite trading and tech teams across global markets Skills C#, Market Data, High-Performance Systems, Real-Time Infrastructure Location London (On-site) Hybrid On-site working (City-based HQ) Offer Highly competitive base + Bonus (Annual Review) Benefits … Days Holiday, Private Medical, Free Meals, Extensive Learning & Development The Role A global investment firm is seeking a Senior C# Developer to join their Market Data Technology function-an elite team responsible for building and maintaining the infrastructure that powers their global fixed income, FX, equity, and derivatives trading platforms. You'll work across real-time and … architecture and contributing to system scalability under peak load conditions Mentoring junior engineers and supporting broader technology roadmaps What Makes You a Great Fit 5+ years of experience in C# or Java , ideally within high-performance environments Deep understanding of market data infrastructure (feeds, storage, transformation, analytics) Strong knowledge of SQL Server and other database technologies (e.g. Redis) Familiarity More ❯

Senior C# Developer Bank London The Front office (Fixed Income) software development team requires an agile and versatile specialist and team player with extensive expertise in .Net/C# software. The role requires an experienced individual who is comfortable to work in close partnership with a variety of front office stakeholders, globally. Role details Title: Senior … Developer (software engineer) Technical stack C#.NET. Wider stack .Net, .Net Core, SQL Server Permanent role, salary £88,000- £110,000 Location: London City and home working hybrid Focus: Front office Fixed Income Role Summary Work closely with the Front Office (specifically within Fixed Income) to build and develop new amazing softwares. This role reports directly into the Head … within C#.NET & SQL Server This is a very strong team who have been building their front office team and have an excellent reputation Role requirements Core Development Languages covering C# .Net, .Net Core, & SQL Server Experience of Front Office trading systems (including low-touch e-trading platforms) is required Experience and understanding of a Fixed Income Banking is beneficial More ❯

Software Developer/Engineer (C# TypeScript) London/WFH to £65k Would like to progress your career as a Software Developer, working on a modern, web based, tech stack with continual learning and development opportunities as part of a diverse team? You could be progressing your career at a global FinTech consistently voted as a … 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 good knowledge More ❯

Role: Senior Full Stack Developer (C#/.NET) Salary: £90,000 - £130,000 + bonus + benefits Location: Central London - 5 days per week onsite Overview Our client is a high-performing, London-based investment management firm specialising in sports trading. Generating £6.11M in turnover last year, they operate globally across football, cricket, US sports, and more. … on greenfield projects with real-world impact, building predictive modelling systems that power automated trading and investment strategies. Key Responsibilities Design, build, and maintain full-stack software solutions in C#/.NET* Develop predictive models for real-time sports trading and analysis* Contribute to greenfield product development with autonomy and ownership* Collaborate across a highly technical team with strong … Solve complex, data-driven problems that have immediate business impact* Support system integration, testing, and deployment processes Ideal Candidate 5-10 years of software engineering experience* Strong proficiency in C# and the .NET platform* Solid foundation in mathematics, statistics, or quantitative problem-solving* Experience with SQL Server, Oracle, or similar RDBMS* Comfortable working in a fast-paced, collaborative environment More ❯

Python & C# Developer - Front Office Risk (VP) Commodities Tech Overview CITIGROUP is one of the largest players in the financial industry, employing more than 200,000 people across the globe. What We do/The Team The Commodities trading business at CITI has grown significantly in the last 10 years to become one of the leading industry … and day-to-day usage of the latest technology. Role Overview/What will you do: Services Development and maintenance: Design, develop and maintain high performing fault-tolerant Python (& C#/.NET) micro-services, in order to deliver a seamless user experience for our clients. Stakeholder Management : Work with Traders and Risk Managers to gather requirements, perform analysis and … A history of interacting with the trading desks and ability to analyse and address issues and queries quickly and effectively. Proven recent hands-on experience with Python (and ideally C#) plus SQL Server and/or Parquet. Evidence of strong delivery throughout the entire lifecycle. Strong problem-solving skills and capability to write code quickly and accurately to troubleshoot More ❯

The role is for a C# developer who will be working within a small team on Commodities Marking and Market Discovery Platform used by traders across the regions. We offer the opportunity to grow professionally, learn new technologies and gain business knowledge. Responsibilities: Develop thePlatform using C# with an opportunity to learn React during WPF to … to testing, documentation and release process as per business requirements and firm standards Collaborate with other global Commodities technology teams and more widely across markets technology Knowledge/Experience: C# development experience with understanding of multi-threading JavaScript, Python, WPF, messaging, React and/or Angular are a plus but not required Experience in financial services is a plus More ❯

Senior Lead C# Software Developer We urgently require a Senior C# Lead Developer with at least 5 to 10 years solid expertise in developing financial systems ideally banking systems. Your experience should include extensive knowledge of developing complex financial systems in C# as Teal Leader. Any experience of SQL Server or backend database More ❯

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 9, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage, and … customers by delivering inbound experiences that are relevant, helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should be created, and … roles would be suitable Graduate/Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, Linux, C# or Java; which might have been acquired as part of your degree course or through a placement year in industry. At the center of our client's culture is More ❯

Graduate/Junior Developer, Python, Linux, C#, Java - London (Tech stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 9, C#, J2EE, Agile, TDD, BDD) Since 2006, our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage, and delight customers by delivering inbound experiences … that are relevant, helpful, and personalized. Having recently launched in the UK, they are looking to hire a Graduate/Junior Developer (Python, Linux, C#, Java) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should be created and how it should … These roles would be suitable for Graduate/Junior Developers who have recently graduated from university and have a basic understanding of any of the following technologies: Python, Linux, C#, or Java; which might have been acquired as part of your degree course or through a placement year in industry. At the center of our client's culture is 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 and support applications using … 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 ❯

Hays Software Engineering are looking for a Lead C# Developer to join a Commodities team within a world-renowned Investment Bank to be hands-on & lead their Front Office Commodities Trade Development team.What you will be doing: Manage the Commodities Development team and act as primary liaison with business and IT stakeholders. Oversee key deliveries and organise … pricing, market data, risk, and reporting tools. Collaborate with global teams to design scalable, resilient systems supporting front and support offices. What we are looking for: Programming & Frameworks: .NET (C#, .NET Core), Entity Framework, WPF; microservices architecture Frontend Development: Angular/AngularJS Databases: SQL Server, Oracle, MongoDB Tools & APIs: Visual Studio, Bloomberg API, RMDS, Reuters EIKON Asset Class Knowledge More ❯

Hays Software Engineering are looking for a Lead C# Developer to join a Commodities team within a world-renowned Investment Bank to be hands-on & lead their Front Office Commodities Trade Development team. What you will be doing: Manage the Commodities Development team and act as primary liaison with business and IT stakeholders. Oversee key deliveries and … pricing, market data, risk, and reporting tools. Collaborate with global teams to design scalable, resilient systems supporting front and support offices. What we are looking for: Programming & Frameworks: .NET (C#, .NET Core), Entity Framework, WPF; microservices architecture Frontend Development: Angular/AngularJS Databases: SQL Server, Oracle, MongoDB Tools & APIs: Visual Studio, Bloomberg API, RMDS, Reuters EIKON Asset Class Knowledge 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 framework coupled with SQL Server. … 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 technology experience More ❯

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some … external reporting/tradeflow and pricing APIs. Maintaining the company's daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies(C#, ASP.NET Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested More ❯

MARGO is partnering with a leading financial institution to find a Senior C# WPF Developer with experience in Risk and Profit and Loss. Knowledge of Greeks is important in this role. What you'll do: Design & Development Build and enhance high-performance WPF C# applications Collaboration & Delivery Work closely with trading desks, pricing heads, and global … Follow all legal, regulatory, and internal compliance standards (e.g., market-abuse regulations) Contribute to change-management processes, ensuring minimal business disruption Tech stack & skills: Deep expertise in WPF and C# Agile delivery mindset; rapid prototyping and iterative improvement Systematic reasoning, transparency, and accountability Ability to juggle competing priorities with a solutions-driven attitude Continuous learner: eager to adopt new … technologies and share insights Technical fit - what we're looking for: Degree (or equivalent) in Computer Science, Engineering, Mathematics, or related field 6+ years' experience building WPF C# desktop applications in a high-performance trading environment WHAT'S NEXT? First meeting: You will meet with a Talent Acquisition Manager and a member of the executive committee to discuss your More ❯

to join their team. The role will be working in one of their commodity teams. More specifically a power and gas trading team. Requirements Experience developing with C#/.NET. Commodity trading/Investment banking experience. SQL/Database Experience. Azure. Blazor would be desirable This is a long term contract via umbrella with high chance of More ❯