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C# .NET Software Developer FX

Job in City Of London, Central London, Greater London, England, UK
Listing for: Onyx-Conseil
Full Time position
Listed on 2026-05-25
Job specializations:
  • Software Development
    C# / Unity Developer, Backend Developer, Software Engineer, Full Stack Developer
Salary/Wage Range or Industry Benchmark: 50000 - 60000 GBP Yearly GBP 50000.00 60000.00 YEAR
Job Description & How to Apply Below
Position: C# .NET Software Developer with FX
Location: City Of London

C# .NET Software Developer with FX

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 trach record of developing with C# .NET ideally with some understanding FX projects.

The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team.

You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just ‘making up the numbers’.

Initially reporting to the CTO, the successful candidate will become a key member of the global team.

There will be a large amount of autonomy in the role, giving the candidate the opportunity to showcase their development talents,

Responsibilities
  • Re-architecting and building the in-house middle office platform and integrating with a new trading platform.
  • Developing pricing toolsets
  • Integrating to external reporting/tradeflow and pricing APIs.
  • Maintaining the company’s daily operation on the existing platforms.
Essential skills
  • Minimum 3 years experience 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 production ready software.
Desirable skills
  • Knowledge of the FIX protocol
  • Knowledge of FX trade processing
  • Basic knowledge of Foreign exchange products (vanilla/exotic options, fx cash) ( training will be given)
Qualifications

Computer Science related degree preferred At least 3 years experience in a comparable development role.

The Client is based in the City of London.

The salary for this role will be £50K - £60K.

Please do send your CV to us in Word format along with your salary and availability.

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