Unison Group

Haskell Developer

Warsaw
Level
Mid

Not stated in the posting: salary, work type, visa.

Open. First seen 3 October 2026.

About the role

Job Description

We are looking for a highly skilled Haskell Developer with a strong foundation in Functional Programming and Mathematics/Computer Science concepts. The ideal candidate should have experience in designing and developing scalable applications using Haskell and possess excellent analytical and problem-solving abilities.

Key Responsibilities

  • Design, develop, and maintain applications using Haskell.
  • Write clean, efficient, and reusable code following functional programming principles.
  • Work on complex algorithms, data structures, and mathematical problem-solving.
  • Collaborate with cross-functional teams to understand business requirements and translate them into technical solutions.
  • Optimize application performance and ensure high-quality code through testing and code reviews.
  • Participate in architecture discussions and technical design decisions.

Required Skills

  • Strong hands-on experience in Haskell programming.
  • Deep understanding of Functional Programming concepts:
  • Pure Functions
  • Immutability
  • Recursion
  • Higher-Order Functions
  • Type Systems
  • Monads
  • Strong foundation in:
  • Mathematics
  • Algorithms and Data Structures
  • Discrete Mathematics and Logic
  • Excellent problem-solving and analytical skills.
  • Good understanding of software engineering best practices and version control systems.

Preferred Skills

  • Exposure to other functional languages such as Scala, OCaml, or F#.
  • Experience in distributed systems, backend development, or high-performance computing.
  • Contributions to open-source projects or academic/research experience in functional programming.

Educational Qualification

  • Bachelor's or Master's degree in Computer Science, Mathematics, Engineering, or a related field.
  • Candidates with a strong mathematical background will be preferred.

What this role asks for

Particular to this role

Haskell · Scala

Rare in Unison Group's other 135 open postings.

Compared with Unison Group's other open jobs.

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