Haskell Developer
Posted 1 week ago by Sanderson
£1,000 Per day
Inside
Hybrid
London Area, United Kingdom
Summary: The role is for a Senior Haskell Developer at a prestigious global investment bank, focusing on advanced Haskell implementations in finance. The position requires extensive experience in building large-scale Haskell systems and leading technical projects. The developer will work as an individual contributor and technical leader within a high-performance team. This opportunity emphasizes pure Haskell expertise rather than financial services experience.
Key Responsibilities:
- Contribute as an Individual Contributor and technical leader in Haskell engineering.
- Build and deploy large-scale Haskell systems.
- Lead complex technical projects with Haskell components integrated into broader technology stacks.
- Collaborate cross-functionally and mentor team members.
- Work with a hybrid compiler architecture leveraging GHC as a frontend to a proprietary language.
Key Skills:
- 20+ years of professional experience in Haskell development.
- Deep expertise in building and deploying large-scale Haskell systems.
- Experience leading complex technical projects.
- Familiarity with the GHC codebase and functional language compilation.
- Experience with or maintaining custom compilers is a strong advantage.
- Clear and confident communication skills.
Salary (Rate): £1000/day
City: London
Country: United Kingdom
Working Arrangements: hybrid
IR35 Status: inside IR35
Seniority Level: Senior
Industry: IT
Contract Opportunity: Senior Haskell Developer Global Tier-1 Investment Bank | £800–£1000/day PAYE | London | 12+ Months
Join one of the most prestigious Haskell engineering teams in global finance. We're partnering with a world-leading investment bank renowned for its sophisticated use of Haskell in production —arguably the most advanced implementation of the language in the banking sector. We’re seeking a Senior Haskell Developer with 20+ years of professional experience to contribute as an Individual Contributor and technical leader. This is a rare opportunity to work at the heart of a team pushing the boundaries of functional programming in a real-world, high-performance environment.
What You'll Bring:
- Deep expertise building and deploying large-scale Haskell systems
- Experience leading complex technical projects with Haskell components integrated into broader technology stacks
- Ideally, familiarity with the GHC codebase and knowledge of functional language compilation
- Experience working with or maintaining custom compilers is a strong advantage
- Clear and confident communication skills for cross-functional collaboration and mentoring
Our current direction includes a hybrid compiler architecture , leveraging GHC as a frontend to our proprietary language. Financial services experience is not required —we’re focused on pure Haskell excellence .
Location: London (hybrid options possible)
Contract Length: 12 months+
Rate: £800 to £1000/day (PAYE, negotiable)
If you’re passionate about Haskell and ready to make an impact in a technically elite environment, we’d love to hear from you—or from anyone in your network who might be a fit. Apply now or reach out for a confidential conversation.