19 of 19 C# Developer Jobs in London

C# Developer | Remote | Outside IR35 A client is seeking an experienced C# Developer to join their development team and support a key internal initiative. In this role, you'll also play a major part in configuring, enhancing, and integrating Microsoft Dynamics 365 within … collaborate closely with senior stakeholders to deliver clean, efficient, and reliable code that underpins critical business applications. Responsibilities: Produce well-structured and clearly documented C#/.NET code. Configure, customise, and maintain Microsoft Dynamics 365. Build and support integrations across Dynamics 365 and other systems. Develop plugins, workflows ...

C# .Net Developer - 3 months+ - Hybrid - Rate circa £500-£650 We are looking for an experienced C# .Net Developer with experience of GenAI to join a team developing cutting edge AI solutions who will either have current and active SC clearance or have … experts. You will work on projects developing GenAI capabilities and provide guidance to non-technical people. What you will bring to the team Solid C# .Net experience Fine-tune Large Language Models (LLMs) and other generative architectures. Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business ...

Senior Full Stack Developer | C# & React | Greenfield Trading Platform | London, Hybrid | Up to £120k + Bonus, Benefits ❗ Note: This role does not provide Visa Sponsorship ❗ 💹 Our client is looking for a Senior Full Stack Developer with strong expertise in C# to join them … West End) Key Responsibilities Design, develop, and maintain scalable applications within the trading ecosystem. Work across the full stack , with a primary focus on C# back-end development . Ensure performance, maintainability, and testability of all solutions. Work closely with business users to understand requirements and deliver high-impact ...

Senior Microsoft Stack Developer, C#, .NET, Azure, React, Central London, Mainly Remote Senior Microsoft Stack Developer required to work for an exciting and growing business based in Central London. However, this will be mainly remote and the expectation will … office circa twice a month. You will be hugely proficient in Microsoft Stack Technologies such as .NET, C# and Azure. You will also have experience with React, along with having some knowledge of and exposure to DevSecOps. Read on for more details... Experience required: Proven hands-on track record ...

C# Developer - Risk IT - sought by leading investment bank based in London - Contract - Hybrid *inside iR35* What You'll Be Doing Designing and developing enterprise-grade solutions in an Agile team. Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices . … Bring A strong academic background in Computer Science, Engineering, or a related field. Proven experience in SOLID Principles/Design patterns Deep knowledge of C# .NET , RESTful services , and microservice architecture . Hands-on experience with FIX messaging , XML , AMQ , and ideally nHibernate , OData , and TDD . Excellent communication ...

Title: Senior C# Developer (Edinburgh)Location: Edinburgh, Midlothian, Scotland, EH4 2HS, UKCompany: SeeByteBecause of the nature of the work associated with this post it is subject to special nationality rules, and this is post is restricted to individuals who are UK British Nationals.SeeByte, the global leader … developing of smart software solutions for uncrewed maritime systems, are looking to recruit aSenior C# Developerto join their team in theirEdinburghorBristol office, Hybrid (60% of time in office).You will have a unique opportunity to play a significant role in a dynamic and world-respected technology company within ...

Hiring: Junior C# Quantitative Developer | Hedge Fund | London (Hybrid) Are you a talented C# developer with a passion for finance, data, and quantitative problem-solving ? Join a leading hedge fund where technology and mathematics drive every decision. We’re looking for a Junior Quantitative … experienced quants, traders, and engineers — building and optimizing the systems that power our trading strategies. 💼 What You’ll Do Develop and maintain high-performance C# applications used in research, risk, and trading Collaborate with quants to implement pricing models and backtesting frameworks Enhance data processing pipelines and contribute ...

Sr. Full Stack Developer - Asset Management Firm - London/Manchester (Hybrid) - Basic salary of up to £85,000 + Bonus and Additional Benefits package Hays are currently working exclusively with a leading asset management firm assisting them in the recruitment of an experienced Full Stack Developer … Annual bonus of between 10% and 25%, depending on personal and company performance. Desired Skills and Experience Software, Developer, Asset Management, AML, C#, .NET, .NET Core, angular, UI, Front End, Azure, SQL Server, Financial Services, Lead Developer, Senior Developer Hays Specialist Recruitment Limited ...

Global bank based in Canary Wharf. Role - C# Developer - Desktop Applications Duration - 6 months with likely extension Rate - £415 p/d (inside IR35) Location - Hybrid/Canary Wharf Tech Stack C# WPF Winforms SQL Oracle Tasks Tasks range from understanding business requirements, designing application structures ...

partnered with a leading fixed income hedge fund in London seeking a talented C# Developer to join their front-office technology team. The fund has a strong and consistent performance track record and has invested heavily in its quant and tech capabilities as part of a wider … team multiple times so are able to go into detail regarding set up of the team and role The team primarily uses C# for core systems and Python within quant and data teams. C# and .Net experience and knowledge are essential for this role, but the fund will ...

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 10.0, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been … 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 ...

C#/.Net Software Developer Banking London £40-55k This is a new and exclusive opportunity for a bright C#/.Net Software Developer to join my thriving investment banking client as they are expanding their C#/.Net Software Development team … Role details Title: C#/.Net Software Developer Employer: investment bank Location: London City Liverpool street station hybrid working 50/50% in office and home working Permanent role- salary £40,000- £55,000 Requirements: C#/.Net software, platform integration, SQL This ...

Tier 1 Bank - .NET CORE/React/Banking/Architecture Role - C# Developer/.NET Core Duration - 6 months with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Rate - £415 p/d inside IR35 Tech Stack … C# .NET Core SQL/Oracle React/Typescript Role Deliver, modernise, and support business-critical applications, frameworks and services across our stack (.NET Framework/.NET Core, HTML/CSS/TypeScript/React, Python, SQL Server, Oracle). The role focuses on refactoring legacy systems to reduce ...

C# Oracle PL/SQL Developer for Tier 1 bank in Canary Wharf Role - C#, Oracle, PL/SQL Developer Duration - 6 months with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Rate … Inside IR35) Tech Stack C# Oracle PL/SQL Data Lineage Documentation Role Primary responsibility will be to reverse-engineer complex source code to document data flows and transformations. You will collaborate closely with application teams, DBAs, and data governance specialists to ensure that lineage artifacts are complete ...

will develop and consolidate systems, write software, guide a team of developers, and take ownership of several critical platforms. This includes an in‐house C# PnL and Risk system that performs real‐time portfolio valuation, alongside other components that will be integrated into a cohesive, modernised core platform. … date) accounting reconciliations Particular interest in candidates with Fixed Income and Rates experience Technical Skills Strong computer science fundamentals Hands‐on development experience in: C# and .NET (essential for this role) Python within quant or data environments The client will also consider exceptional engineers from other OOP backgrounds such ...

work to owning the analytics infrastructure that shapes how an entire research organization sees its performance. What You'll Own: Production reporting tools in C# and React used across all desks Analytical dashboards that turn performance data into trading insights The platform roadmap - you decide what gets built next … firm scale fast What You Bring: Experience 3+ years building production software Background in quantitative finance or trading environments preferred Technical Skills C# and Python React ...

C#, .NET, .NET Core, SQL Server, T-SQL, Entity, Azure, App Services, Azure Service Bus, Event-driven architecture, API's, CI/CD, DevOps. We have 2 great permanent job opportunities to join our client in early 2026. A degree in computing, software engineering or computer science would ...

Working for a major energy trader (energy/renewables). We are recruiting Lead Developer/Tech Lead with a background in C#/.Net (and ideally Angular). The Role As a member of a skilled large global team (London, NYC, Mumbai) of software engineers … developing the core trading platform. The customers are varied; traders, analysts, researchers and data scientists. Essential Skills: 10+ years of experience working with C#/.NET (8) technologies 5+ years in a leadership role, managing 5+ software engineers (code reviews, architecture) Experience with RDBMS (Oracle, SQL Server, Sybase) Experience ...

Position:Senior Software Engineer (C#) Overview: System development for financial institutions Job Description: Due to the expansion of system development projects for financial institutions, we are seeking engineers with C#.NET Responsibilities: - Develop systems for financial institutions using C# - Design and implement functions from front-end to back ...