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Ocaml Jobs (NOW HIRING)

Jane Street

Software Engineer / Writer

New York, NY · On-site

We have a ton of programs that new and experienced hires go through, ranging from an OCaml Bootcamp to Dev Teach-ins that expose students to interesting technical problems from around the company.

Jane Street

ASIC Physical Design Engineer

New York, NY · On-site

$148K - $153K/yr

We don't expect you to know OCaml (we'll teach you here), but we are looking for hardware engineers who are excited about the advantages that better tools can bring, and are willing to try new things ...

Jane Street

Production Engineer

New York, NY

As a firm we are big believers in functional programming, and use OCaml as our primary development language. Production Engineers play an essential role interacting with a wide variety of departments ...

Jane Street

Software Engineer

New York, NY · On-site

As a Software Engineering intern, you'll learn how we use OCaml (our primary development language) in our day to day work, and gain exposure to the libraries and tools that are foundational to our ...

Jane Street

Software Engineer

New York, NY · On-site

As a Software Engineering intern, you'll learn how we use OCaml (our primary development language) in our day to day work, and gain exposure to the libraries and tools that are foundational to our ...

Jane Street

Software Engineer

New York, NY · On-site

As a Software Engineering intern, you'll learn how we use OCaml (our primary development language) in our day to day work, and gain exposure to the libraries and tools that are foundational to our ...

Jane Street

Software Engineer

New York, NY · On-site

As a Software Engineering intern, you'll learn how we use OCaml (our primary development language) in our day to day work, and gain exposure to the libraries and tools that are foundational to our ...

Jane Street

Front End Software Engineer

New York, NY · On-site

Experience with languages like Elm, ReasonML, Purescript, and Typescript is a plus. (we don't expect experience in OCaml in particular.) The role will provide opportunities to work in multiple parts ...

Jane Street

Linux Engineering Manager

New York, NY · On-site

They should have a willingness to learn OCaml, our language of choice, and meet the following requirements: * Bachelor's degree in Computer Science, Software Engineering, or other technical ...

Jane Street

Front End Software Engineer

New York, NY · On-site

Experience with languages like Elm, ReasonML, Purescript, and Typescript is a plus. (we don't expect experience in OCaml in particular.) The role will provide opportunities to work in multiple parts ...

Jane Street

Data Engineer

New York, NY · On-site

$125K - $150K/yr

You'll write Python, SQL, and OCaml; use open-source tools and proprietary software; and work with a mix of structured and unstructured data (think world news, decades of weather patterns ...

Jane Street

Data Engineer

New York, NY · On-site

$125K - $150K/yr

You'll write Python, SQL, and OCaml; use open-source tools and proprietary software; and work with a mix of structured and unstructured data (think world news, decades of weather patterns ...

Jane Street

Formal Methods Engineer

New York, NY · On-site

While we are eager to integrate new tools into our existing infrastructure, no previous experience with OCaml or functional programming is required. Why do it here? The whole world is thinking about ...

Workila

Senior Backend Engineer (Scala)

New York, NY · On-site

Bonus points for experience with additional backend languages such as OCaml, Haskell, Go, C++ (with preference towards functional languages). Candidate should also have experience leading a team of ...

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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.

Software Engineer / Writer

New York, NY • On-site

Jane Street
Finance and Insurance • 1 - 5K employees
Learn more about Jane Streetexternal

Full-time

Re-posted 15 days ago

Job description

About the Position

We're looking to hire a programmer-who-writes, or a writer-who-codes.

Here are the kinds of things we'd like to have this person work on:

  • Documentation. We've always believed that developers should spend time and effort documenting their own code, but at the same time, a great writer with a feel for the technology can raise the level of quality in a way that few developers can. Establishing a culture of great docs is especially important as we grow.
  • Building tools that support documentation. So much documentation is auto-generated by our systems, whether as error messages, logs, automated emails, or library docstrings. Getting your hands dirty hacking on documentation-adjacent tools will help not just to a first order, but will also make your other writing more effective.
  • Training material. We have a ton of programs that new and experienced hires go through, ranging from an OCaml Bootcamp to Dev Teach-ins that expose students to interesting technical problems from around the company. Part of the job is to make these better and mint more of them where valuable.
  • Writing longer pieces. We need more tutorials and overviews on a variety of topics. We have an internal developer handbook that we're writing, with a backlog of chapters-each one an opportunity to dive deep into some part of our stack. But there's also a lot of external writing to be done, for instance on our blog, our programming podcast, for conferences, recruiting events, and more.

In terms of skills, we want someone who is both an excellent writer and good enough at programming to navigate our codebase, work through our tutorials, and write up examples. You might spend meaningful time embedded as an engineer on one of our projects, just to understand how we write software. But experience with functional programming, expressive type systems, OCaml, or finance are all unnecessary-we're happy to teach you about these things here.

If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com.

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