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ahrefs Logo ahrefs · IT - Software Development

Ocaml developer

· Job Posted December 16, 2025
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Job Description

Ahrefs is looking for a backend developer with deep understanding of networks, distributed systems, OS fundamentals and taste for simple and efficient architectural designs. Our backend is mostly implemented in OCaml with some C++. In this role, be prepared to deal with 25 petabytes of live data, OCaml and Linux on a daily basis.

Requirements

  • Proficiency in OCaml
  • Independently deal with bugs, schedule tasks and investigate code
  • Make well-reasoned technical choices and take responsibility for them
  • Understand the whole technology stack at all levels: from network and user-space code to OS internals and hardware
  • Handle full development cycle of a single component i.e. formalize task, write code and tests, setup and support production, resolve user requests
  • Approach problems with a practical mindset and suppress perfectionism when time is a priority
  • Write flexible, maintainable code and adapt to post-launch requirements/tweaks

Nice to have

Knowledge of C++ is a plus but not essential

What we offer

  • Competitive compensation package
  • Informal and thriving work atmosphere
  • Above-average perks and fringe benefits
  • First-class workplace (hardware, software, etc) in the modern office
  • Hardware allowance
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