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Software Developer

Haystack
Department:Web Design
Type:REMOTE
Region:UK
Location:United Kingdom
Experience:Mid-Senior level
Salary:£70,000 - £80,000
Skills:
C#FUNCTIONAL PROGRAMMINGSQLF#HASKELLSCALALANGUAGE-EXTTYPESCRIPTDOMAIN DRIVEN DESIGNPROPERTY-BASED TESTING
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Job Description

Posted on: February 14, 2026

Senior Software Developer | United Kingdom | Remote | £70,000 - £80,000 We're working with our client on this exciting opportunity. They are a thriving software company revolutionizing the medical sector with innovative enterprise web applications, and they're seeking a Senior Software Developer with a passion for functional programming to join their fully remote team. Join a forward-thinking team where your expertise in C# and functional programming will drive the development of cutting-edge medical software. This is a unique chance to advance your career with a company that embraces remote work and values technical excellence. The Role

  • Develop and enhance enterprise web applications for the medical sector using C#.
  • Apply and advocate for functional programming principles, leveraging language extensions in C#.
  • Collaborate on the design and implementation of new features and system improvements.
  • Contribute to a fully remote, agile development environment.
  • Work with modern software development practices including Domain Driven Design and property-based testing.

What You'll Need

  • Proven experience with C# development.
  • Strong understanding and practical experience with functional programming concepts, ideally with languages such as F#, Haskell, or Scala (personal projects welcome).
  • Proficiency in SQL for database management.
  • A passion for writing clean, maintainable, and efficient code.
  • Experience with Language-ext, TypeScript, or Domain Driven Design is a plus.

What's On Offer

  • Competitive salary range of £70,000 - £80,000.
  • Fully remote working policy – no office visits required.
  • Opportunity to work with cutting-edge technologies in the medical software domain.
  • A collaborative and supportive team environment.

Apply via Haystack today!

Originally posted on LinkedIn

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