25 of 25 Permanent C# Developer Jobs in London

Senior C# Developer Location: London (Fully Onsite) Employment Type: Permanent Salary: £50,000 - £70,000 (DOE) Visa Sponsorship: Not available We're working with a London-based organisation that is looking to hire an experienced Senior C# Developer to join their engineering team … ideal for someone who enjoys hands-on development, working closely with the business, and taking ownership of complex systems. The Role As a Senior C# Developer, you'll be responsible for designing, developing, and maintaining business-critical applications built on C#/.NET and SQL . ...

C# Developer/Backend Software Engineer (.Net Azure API) London/WFH to £90k Are you a backend focused C# Developer with a strong knowledge of Azure? You could be progressing your career in a senior, hands-on C# Developer role … days holiday Pension Gym membership Private Health and Dental Insurance Access to a wide range of financial services Hybrid working Your role: As a C# Developer you'll join a team acting as a 'tech incubator' within the wider business who are enabling the business to transform ...

Senior C# Developer - 8 Month contract role - Hybrid (London)*** RED now has a new contract opportunity for a C# Developer to join one of our key partners for a brokerage project . The initial contract will be for 8 months with excellent extension opportunities. … start 14th of May and will be hybrid with 3 days pr week on-site in London , United Kingdom. Role responsibility: As a Senior C# developer, you will lead the design and development of high-performance software while bridging the gap between application code and cloud infrastructure. ...

C# Developer/Backend Software Engineer (.Net Azure API) London/WFH to £90k Are you a backend focused C# Developer with a strong knowledge of Azure? You could be progressing your career in a senior, hands-on C# Developer role ...

Senior C# WPF .NET Developer – Investment Banking A project at a leading investment bank in London seeks an experienced C# Developer to join their fast paced, dynamic and growing team where you will be given the opportunity to work in an agile development team … Credit Risk platform. Your primary focus will be on developing the server-side components, but you can expect to have full stack exposure, including C# service tier and WPF front-end. You'll be working closely with business analysts and directly with end users – including Transaction Management & Operations ...

C# Developer – Fixed Income Options London | Hybrid | Leading Options Market Maker A leading global options market maker is expanding its Fixed Income Trading team in London and is seeking a junior to mid-level C# Developer to join a high-impact, front-office engineering … enhance trading tools and systems that support pricing, execution, and research across fixed income options markets. About this role: Develop and enhance high-performance C# trading applications used by front-office teams Collaborate closely with traders and quantitative researchers to enable new trading strategies Build scalable, low-latency systems ...

Title: C# Developer Client: Elite FinTech Firm Experience Level: 2+ years' Salary: Up to £100k + Bonus + Package Location: London (Flexible Working) An elite fintech firm are searching for C# Developers to join a group of the highest-regarded talent around! This team … high performance tools - utilising cutting edge technology across a diverse range of greenfield projects Tech driven environment - most recent versions/frameworks of C# used daily Skills/Experience Strong knowledge of C# STEM degree - strong computer science fundamentals (Preferred ...

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 ...

client, a high-performing, data-driven hedge fund, is seeking a top-tier Graduate/Junior C# Developer to join their London-based technology team. This is a rare opportunity to join a lean, high-calibre environment where technology sits at the core of the business. … weekly production releases, requiring engineers who are both pragmatic and delivery-focused. Key Responsibilities will include: Building and enhancing high-performance systems in C# supporting trading and analytics workflows Developing tools for market data processing, trading infrastructure, and internal platforms Working across the full development lifecycle: design, implementation, testing ...

Lead C# Backend Developer Location: Central London (Onsite) Salary: £75,000 - £85,000 Type: Permanent Sponsorship: Not available (must be UK-based) Overview We are working with an established software house based in Central London who are looking to hire a Lead C# Backend Developer … environment and enjoys working closely with both technical and non-technical stakeholders. Role & Responsibilities Lead the design and development of scalable backend systems using C# and .NET Framework Provide technical leadership and mentorship to a team of developers Take ownership of backend architecture and ensure best practices are followed ...

Lead C# Backend Developer Location: Central London (Onsite) Salary: £75,000 - £85,000 Type: Permanent Sponsorship: Not available (must be UK-based) Overview We are working with an established software house based in Central London who are looking to hire a Lead C# Backend Developer ...

Lead Developer, Azure, .NET, C#, React, LogicApps, Full Stack Engineer, Mainly Remote Lead Developer required for a Professional Services business based in Central London. There will be a requirement to be present in the office circa twice a month. On the odd occasion … more than this We need someone with the following skills: The following skills as absolute PRIME - .NET, C#, Azure (including Logic Apps) and React. AZURE FIRST! Not AWS or GCP Strong Leadership where you have operated as a Lead Developer in a current of previous role Solid ...

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 ...

Working for a major energy trader (energy/renewables). We are recruiting a Tech Lead with a background in C#/.Net/Angular/Oil. The Role As a lead member of a skilled large global team (London, NYC) of software engineers, you will play a role … 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 ...

Lead Developer, Azure, .NET, C#, React, LogicApps, Full Stack Engineer, Mainly Remote Lead Developer required for a Professional Services business based in Central London. There will be a requirement to be present in the office circa twice a month. On the odd occasion ...

Power Platform Developer (D365/C#/Azure) London/Hybrid £50,000-£58,000 + bonus + benefits A leading financial services organisation is seeking a hands-on Power Platform Developer to join its in-house PP team. This is a pure developer … focused on building and supporting a mature Microsoft Power Platform and Dynamics 365 estate. The role combines low-code development with traditional engineering, including C#, plug-ins and Azure Function Apps, to deliver robust, scalable solutions for a regulated, buy-side environment. The role Develop and enhance solutions using ...

with pragmatic, commercial solutions. You’ll have direct interaction with PMs, quants, and the CTO, contributing across design, architecture, and production support. Tech Environment C# and .NET are central to the team’s core systems Python is widely used across quant and data groups Open to candidates from other … essential, but interest in Fixed Income/Rates is beneficial Requirements Strong academic background in Computer Science or related field Excellent programming ability in C# and .NET Experience with large or complex data sets 1–5 years’ experience in a software engineering role Interest in finance; exposure to fixed ...

C# Front Office Developer- TOP HEDGE FUND! Robert Half Limited is representing this client. This is a Permanent role with a high bonus Hybrid working -Based in the city and 3 days in the office and 2 days from home This isn't a large PM environment … Forwards Why this role? Small, elite team (no big firm bureaucracy) Real ownership & direct impact High-volume, fast-paced environment Strong engineering culture (C#, Python, SQL, MUST HAVE Azure, CI/CD) Must have: Strong C# experience in financial markets with at least 4+ years' experience Exposure ...

Senior .NET/Full Stack Developer – Hybrid – £600/day Outside IR35 | C# | Azure | Event-Driven Systems | Payments | API-Driven We have a unique opportunity for a Senior .NET/Full Stack Developer to join a payments company. As a Senior .NET/Full Stack … volumes Contribute to improving engineering velocity, delivery quality, and platform resilience What we’re looking for Strong experience building production systems with .NET/C# Experience building cloud-native systems in Azure Experience with event-driven architectures (e.g., Kafka, Service Bus, Event Grid, messaging systems) Proven experience building distributed ...

Lead Developer, Full Stack Engineer, Azure, .NET, C#, React, LogicApps, Mainly Remote Lead Developer required for a Professional Services business based in Central London. There will be a requirement to be present in the office circa twice a month. On the odd occasion … Development perspective. Previous candidates usually fall down on their lack of skills with LogicApps this is essential Good, hardened Full Stack Development skills within C#, .NET, React, JavaScript, HTML/CSS, Azure PaaS (Azure Functions, Azure Logic Apps, Cosmos DB, Azure App Service, ARM/Bicep templates), SharePoint Acceptance ...

Level .NET/Full Stack Developer – Hybrid – £450/day Outside IR35 | C# | Azure | Event-Driven Systems | Payments | API-Driven We have a great opportunity for a Mid-Level .NET/Full Stack Developer to join a growing payments company. As a .NET Developer … engineering best practices Support the team in delivering scalable and reliable distributed systems What we’re looking for Experience developing applications with .NET/C# Exposure to cloud platforms such as Azure Experience building or consuming REST APIs Understanding of microservices or event-driven architectures Experience working in agile ...

Lead Developer, Full Stack Engineer, Azure, .NET, C#, React, LogicApps, Mainly Remote Lead Developer required for a Professional Services business based in Central London. There will be a requirement to be present in the office circa twice a month. On the odd occasion … more than this We need someone with the following skills: Strong Leadership where you have operated as a Lead Developer in a click apply for full job details ...

Lead .NET/Full Stack Developer - Hybrid - £700/day Outside IR35 | C# | Azure | Event Driven Systems | Payments | API Driven We have a unique opportunity for a Lead .NET/Full Stack Developer to join a payments company. As the Lead .NET/Full Stack … volumes Contribute to improving engineering velocity, delivery quality, and platform resilience What we’re looking for Strong experience building production systems with .NET/C# Experience building cloud-native systems in Azure Experience with event-driven architectures (e.g., Kafka, Service Bus, Event Grid, messaging systems) Proven experience building distributed ...

C# Front Office Developer- TOP HEDGE FUND! Robert Half Limited is representing this client. This is a Permanent role with a high bonus Hybrid working -Based in the city and 3 days in the office and 2 days from home This isn't a large PM environment ...

hiring a Senior Unity Developer Join Offroad Games, a fresh, London-based game studio founded by ex-Space Apes in 2025. We’re running two live games, Chrome Valley Customs and Fastlane and tackle exciting technical challenges with a ship fast, improve constantly mindset. You’ll work closely … least one launched mobile title. Comfortable working independently while collaborating closely with the fast-moving wider team Be a flexible game developer and be ready to give feedback and suggestions on anything we create. Have the drive to make fun and engaging game mechanics with great feedback. Hybrid ...