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Ocaml Jobs (NOW HIRING)

Ahrefs

OCaml Developer

Cambridge, MA · On-site

Our backend is mostly implemented in OCaml with some C++. This role is based out of one of our offices - Palo Alto, Cambridge (MA), Singapore or Tokyo. You can be based in whichever of these you have ...

Linuxcareers

$90K - $119K/yr

Develop software in OCaml for trading and operational infrastructure systems * Support traders and infrastructure users across Windows, Linux, and macOS platforms * Analyze and respond in real-time ...

Trading Interview

Implement, configure, and maintain production trading systems in OCaml; * Review and vet research performed by Junior Quantitative Researchers; * Mentor and train Junior Quantitative Researchers in ...

Jane Street

Software Engineer

New York, NY

We are big believers in functional programming and, using OCaml, a statically -typed functional programming language, as our primary tool. More recently, Python has become a vital part of Jane Street ...

Jane Street

Hardware Engineer (FPGA/ASIC)

New York, NY · On-site

We use Hardcaml, an OCaml library for succinctly describing hardware in RTL. Hardcaml is tightly integrated into our development environment, so you'll also gain lots of exposure to the libraries and ...

Jane Street

Hardware Engineer (FPGA/ASIC)

New York, NY · On-site

We use Hardcaml, an OCaml library for succinctly describing hardware in RTL. Hardcaml is tightly integrated into our development environment, so you'll also gain lots of exposure to the libraries and ...

Jane Street

Software Engineer

New York, NY · On-site

We are big believers in functional programming and, using OCaml, a statically -typed functional programming language, as our primary tool. More recently, Python has become a vital part of Jane Street ...

Jane Street

Hardware Engineer (FPGA/ASIC)

New York, NY · On-site

We use Hardcaml, an OCaml library for succinctly describing hardware in RTL. Hardcaml is tightly integrated into our development environment, so you'll also gain lots of exposure to the libraries and ...

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How much do ocaml jobs pay per hour?

As of Sep 11, 2026, the average hourly pay for ocaml in the United States is $28.13, according to ZipRecruiter salary data. Most workers in this role earn between $23.32 and $32.69 per hour, depending on experience, location, and employer.

What is an OCaml?

An OCaml job typically involves software development using the OCaml programming language, which is known for its functional and statically typed features. Professionals in this role often work on building reliable and high-performance applications, including compilers, financial systems, and formal verification tools. OCaml developers may be responsible for writing and maintaining code, optimizing performance, and integrating with other technologies. These roles are commonly found in industries such as finance, academia, and systems programming.

What types of projects do OCaml developers typically work on, and what does a day-to-day workflow look like?

OCaml Developers are often involved in projects that require high reliability and mathematical precision, such as financial software, compilers, static analysis tools, or research applications. On a typical day, you might write and test functional code, participate in code reviews, collaborate with teammates during agile sprints, and troubleshoot existing software modules. Interaction with cross-functional teams is common, as you may need to align closely with product managers or QA engineers to deliver robust solutions. The work environment is often collaborative and intellectually stimulating, providing opportunities to continually enhance programming and problem-solving skills.

What are the key skills and qualifications needed to thrive in the OCaml position, and why are they important?

To thrive as an OCaml Developer, you need strong proficiency in functional programming concepts, in-depth knowledge of the OCaml language, and a background in software engineering or computer science. Familiarity with version control systems like Git, CI/CD pipelines, and OCaml-specific build tools such as Dune is typically required. Excellent problem-solving abilities, attention to detail, and the capacity to communicate complex ideas clearly are valuable soft skills. These competencies are crucial for producing reliable, high-performance code and collaborating effectively within engineering teams using OCaml.

What can I do with OCaml?

OCaml is a functional programming language used in roles such as software development, data analysis, and formal verification. Job opportunities often involve developing high-performance applications, working with compilers, or creating tools that require strong type safety and concurrency support. Proficiency in OCaml can also be valuable in research, finance, and systems programming environments.
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Ocaml jobs near you
Infographic showing various Ocaml job openings in the United States as of September 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 50% In-person, and 50% Remote job distribution, with an average salary of $58,502 per year, or $28.1 per hour.

OCaml Developer

Cambridge, MA • On-site

Ahrefs
See more jobs at Ahrefsexternal

Full-time

Re-posted 2 days ago

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++.
This role is based out of one of our offices - Palo Alto, Cambridge (MA), Singapore or Tokyo. You can be based in whichever of these you have the legal right to work in, but this is an on-site role: we're looking for someone who'll be in the office with the team.
In this role, be prepared to deal with 25 petabytes of live data, OCaml and Linux on a daily basis.
Ahrefs OCaml
Basic Requirements:
  • Proficiency in OCaml
  • Knowledge of C++ is a plus but not essential
The ideal candidate is expected to:
  • 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

These requirements stem naturally from our approach to development with fast feedback cycle, highly-focused personal areas of responsibility and strong tendency to vertical component splitting.
If your preference is leaning towards making the web functional and working on user-facing stuff, you may want to consider our ReasonML position instead.
What You Get
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

Location: Palo Alto, Cambridge (MA), Singapore or Tokyo - on-site
Ahrefs does not engage with agencies or third party recruitment solutions for the roles we hire for. If at any point we need help, we'll let you know!

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