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Principal Functional Back End Engineer

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Modus Create

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Job Description:

Join Our Team as a Principal Functional Back End Engineer at Modus Create! We are looking for a Principal Functional Back End Engineer (Haskell, Nix) to partner with cross-functional teams and provide strategic consulting, full lifecycle product development.

Job Responsibility:

  • Partner with cross-functional teams and provide strategic consulting, full lifecycle product development
  • Leading, mentoring, and coaching both clients and Modus teammates
  • Deep diving into customer needs and translating them into actionable requirements
  • Exploring new tech and continuously learning
  • Sharing your knowledge and participating actively in the community
  • Giving back through opportunities such as blog posts, open source contributions, and event speaking
  • Travel & connections during remote meet-ups
  • Teaching and learning by working in active teams on internal and external projects
  • Being a self starter with autonomy and proactivity
  • Client interaction representing Modus and our values while connecting directly with our clients

Requirements:

  • Principal Level experience
  • Experience with Haskell, written Haskell professionally
  • Knowledge of advanced features of Haskell and ability to navigate a large codebase using them
  • Comfortable working on the core (consensus, ledger, APIs, testing, etc.) of a blockchain project
  • Interest in and some experience of open source community contributions
  • Passionate about Nix (or similar systems such as Guix)
  • Interest in declarative, reproducible builds, with experience in systems like Bazel, Buck2, or Meson
  • Fluent with the command line
  • Skilled in managing development pipelines, test automation, continuous integration, and cloud-based deployments
  • Knowledgeable in software architecture, design patterns, and development methodologies
  • Ability to distinguish between accidental and essential complexity
  • Experience working in teams on large codebases or completing independently-driven projects
  • Overlap with some EST hours daily is expected
  • Reliable high-speed internet is a must

Nice to have:

  • Likely a contributor to nixpkgs, or hosting private flakes or overlays
  • Participate in public communication via writing blog posts and communicating with colleagues and the Functional programming community
  • Optionally, you have experience with at least one non-Haskell functional programming language (Scala, OCaml, Erlang, Clojure, etc.)
What we offer:
  • Remote work with flexible working hours
  • Modus Global Office Programme: on-demand access to private offices, meeting rooms, coworking spaces and business lounges in locations in over 120 countries
  • Employee Referral Program
  • Client Referral Program
  • Travel according to client or team needs
  • The chance to work side-by-side with thought leaders in emerging tech
  • Access to more than 12,000 courses with a licensed Coursera account
  • Possibility to obtain paid certification/courses if they align with company goals and are relevant to the employee's role

Additional Information:

Job Posted:
January 26, 2026

Work Type:
Remote work
Job Link Share:

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