Senior Software Engineer

Senior C# Engineer – City of London (On-site)

Permanent | £90,000 – £120,000

We’re partnered with an innovative proprietary trading firm in the City of London that is hiring a Senior C# Software Engineer . You’ll work on greenfield projects, cutting-edge technology, and play a key part in shaping systems that directly influence trading performance.

Key Benefits

• Competitive salary with a strong benefits package
• Work on greenfield projects where your ideas genuinely shape the outcome
• Exposure to the latest .NET technologies in a high-performance trading environment
• Clear opportunities for career growth and progression
• Collaborative, non-corporate culture where innovation and creativity are encouraged
• Great work-life balance supported by wellness perks, healthcare, and team socials

Key Requirements

• Strong background in C# and the .NET platform (working with the latest versions)
• Database knowledge (SQL Server, Oracle, or equivalent)
• Degree in Computer Science or related subject
• Fluent in English with excellent communication skills
• Detail-oriented, with a drive to deliver high-quality solutions

Nice to have (but not essential):

• ASP.NET, HTML5, CSS, JSP
• Multi-threaded application development
• TCP/UDP network programming
• Git, PlasticSCM, or other distributed version control
• Solid knowledge of Windows technologies

Key Responsibilities

• Develop and maintain high-performance trading applications in a C#/.NET/SQL Server environment
• Take ownership of new, greenfield projects , influencing design and implementation from the start
• Collaborate with a talented team of engineers and researchers in a supportive environment
• Continuously innovate and improve tools, processes, and systems
• Deliver solutions that directly contribute to trading success and business growth

To apply, please use the link provided or reach out directly to arrange a confidential conversation: ollie.bluck@harringtonstarr.com