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Ocaml Jobs (NOW HIRING)

Ahrefs

OCaml Developer

Palo Alto, CA · Hybrid

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. Ahrefs OCaml Basic Requirements:

Ahrefs

OCaml Developer

Palo Alto, CA · On-site

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 ...

Ahrefs

OCaml Developer

Palo Alto, CA · On-site

Ahrefs is a company seeking a backend developer with expertise in OCaml and a solid understanding of networks and distributed systems. The role involves managing a significant amount of live data ...

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

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

New York, NY · On-site

$135K - $178K/yr

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

FPGA Engineer

New York, NY · On-site

$142K - $182K/yr

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

New York, NY

$135K - $178K/yr

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

Low-Latency Engineer

New York, NY · On-site

We build systems primarily in OCaml with only small amounts of C and C++, but you don't need any experience with OCaml in particular (we can teach it to you) or knowledge of the financial markets.

Jane Street

Quantitative Trader

New York, NY

We use OCaml, a statically-typed functional programming language, as our primary development language, and have the largest team of OCaml engineers in any industrial setting. About You We are looking ...

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

Quantitative Trader

New York, NY · On-site

We use OCaml, a statically-typed functional programming language, as our primary development language, and have the largest team of OCaml engineers in any industrial setting. About You We are looking ...

Jane Street

Software Engineer

New York, NY

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

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How much do ocaml jobs pay per hour?

As of Jul 28, 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 company uses OCaml?

Several companies use OCaml for software development, including Jane Street, a major trading firm known for its reliance on OCaml for financial systems. Other organizations like Facebook and Bloomberg have also utilized OCaml for various projects, especially in areas requiring strong type systems and functional programming skills.

What tech jobs pay $400,000 a year?

High-level software engineering roles such as senior software engineers, principal engineers, and engineering managers in top tech companies can earn $400,000 or more annually, especially with bonuses and stock options. Specialized roles in areas like machine learning, cloud architecture, and quantitative trading also have the potential for such compensation levels, often requiring advanced skills and extensive experience.

What jobs use OCaml?

Jobs that use OCaml include software developer roles in finance, formal verification, and research, especially in companies focused on high-assurance systems or functional programming. OCaml is valued for its strong type system and efficiency, often requiring knowledge of functional programming concepts and related tools. These roles typically involve developing complex algorithms, financial modeling, or formal methods for software correctness.

What is an OCaml job?

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.

Do people still use OCaml?

OCaml is still used in industry and academia for applications requiring strong type safety, functional programming, and performance. It is popular in fields like formal verification, financial modeling, and research, with companies and developers maintaining and developing OCaml-based projects.

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 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.

More about Ocaml jobs
What cities are hiring for Ocaml jobs? Cities with the most Ocaml job openings:
What are the most commonly searched types of Ocaml jobs? The most popular types of Ocaml jobs are:
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Ocaml jobs near you
Infographic showing various Ocaml job openings in the United States as of July 2026, with employment types broken down into 60% Full Time, 20% Part Time, and 20% Contract. Highlights an 100% In-person job distribution, with an average salary of $58,502 per year, or $28.1 per hour.

OCaml Developer

Ahrefs

Palo Alto, CA • Hybrid

Other

Posted yesterday

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.

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
  • [Office] First-class workplace (hardware, software, etc) in the modern office
  • [Remote] Hardware allowance

Apply