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3 contract developer jobs found

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contract developer £700 and up Greater London
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London  (3) Remote  (1)
Outside Spy
Sep 21, 2026
Duration not stated
C# Developer/£750/day | Outside IR35 | 12 month+ | Largely Remote/London at CipherTek Recruitment, ec2a, £600-£775 per day
£600 - £775 per day
Outside Spy Remote (ec2a, UK)
Senior C# Developer - Investment Banking £750/day | Outside IR35 | 12-month rolling contract | Largely Remote If you're a strong C# engineer with genuine Event Sourcing experience and interested in a long term banking project, get in touch I'm working with a leading investment bank looking for a strong Senior C# Developer to join a long-term project building and enhancing a large-scale Structured Notes platform. This is a hands-on engineering role with approximately 80% Back End C#/20% frontend, working on complex, distributed systems. The role: You'll be working across a modern .NET platform, designing and developing scalable Back End services while contributing to the Angular Front End where required. The environment involves large-scale distributed systems, asynchronous processing, Multithreading and event-driven architecture. Core technical requirements: Excellent C#/.NET development experience Strong .NET 8 knowledge Previous commercial Event...
Outside Spy
Sep 17, 2026
Duration not stated
Senior Software Engineer at CipherTek Recruitment, City Of London, £750 per day
£750 per day
Outside Spy City Of London, England, United Kingdom
🚀 Senior C# Developer – Investment Banking £750/day | Outside IR35 | 12-month rolling contract | Largely Remote I’m working with a leading investment bank looking for a strong Senior C# Developer to join a long-term project building and enhancing a large-scale Structured Notes platform . This is a hands-on engineering role with approximately 80% backend C# / 20% frontend , working on complex, distributed systems. The role: You’ll be working across a modern .NET platform, designing and developing scalable backend services while contributing to the Angular frontend where required. The environment involves large-scale distributed systems, asynchronous processing, multithreading and event-driven architecture. Core technical requirements: • Excellent C# / .NET development experience • Strong .NET 8 knowledge • Previous commercial Event Sourcing experience – essential • Strong understanding of multithreading, concurrency and asynchronous...
Outside Spy
Sep 16, 2026
Duration not stated
Senior Java Developer - Up to £725 Per Day at Hunter Bond, London, £725 per day
£725 per day
Outside Spy London, UK
Title: Senior Java Developer Client: Leading Trading Firm Rate: Up to £725 p/d Duration: 6 Month - Rolling Location: London - Hybrid   We are looking for a Java Developer, with strong experience working in the finance sector, to join a leading trading firm based in London.   This role will give you the opportunity to work on Greenfields development projects, focussing on buy side trading platforms, working alongside some of the best developers the sector has to offer!   This is a 6 month rolling contract with very high chance of extension!   Skills/Experience   Strong hands-on/commercial coding experience in Java Strong experience working in the finance sector - experience in crypto or equities trading a big plus Strong Communication skills A personality and genuine passion for technology!   If this sounds like something that may be of interest, then please do not...
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