Objective Caml jobs

New York, New York

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13d ago

About the Position Our trading is based on our own proprietary models and on busy days we engage in over a million trades. Traders work in teams to seek out and trade on pricing inefficiencies, develop models, manage risk, investigate new products, and push into new business areas. Experienced traders teach and oversee the less-experienced. New traders serve as assistants while they learn the ropes, getting increasing responsibility as they demonstrate their ability to handle it. Technology is

Full-time

Software Engineer / Writer

New York, New York

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13d ago

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 suppor

Full-time

Compiler Engineer

New York, New York

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23d ago

About the Position We are looking for an experienced software engineer to work on code generation in the OxCaml compiler, which is open source. OxCaml is Jane Street's variant of the OCaml language, equipped with powerful features for high-performance and parallel programming, with data race freedom guarantees. This role involves the full cycle of identifying new optimizations, coding, testing, benchmarking, and deployment. There will be the opportunity to work across a wide variety of intermedi

Full-time

Production Engineer

New York, New York

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13d ago

About the position We are hiring Production Engineers in our New York office. Jane Street Production Engineers are software developers who spend time both developing software and also providing high-quality support for software systems that are critical to Jane Street's trading business. Many of our Production Engineers are embedded in various software teams; others are in standalone teams. In both situations we work alongside application developers with a common goal of creating and running gr

Full-time

Software Engineer

New York, New York

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23d ago

About the Position We're always hiring software engineers for all of our offices. Technology is at the core of how we approach our work, and engineers are intimately involved in every area of the business. 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's research and trading work, acting as the go-to language for data analysis, visualization, and ma

Full-time

Hardware Engineer (FPGA/ASIC)

New York, New York

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13d ago

About the Position We are looking to hire engineers with experience in both software and hardware design to help us build our FPGA or ASIC-based applications. We're big believers in the ability of tools to make programming faster, more pleasant, and more reliable. We apply these same principles to our hardware engineering work, and we're looking for people who are interested in using programming language technology to improve the process of designing, testing, and validating hardware designs. Th

Full-time

ASIC Engineer

New York, New York

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23d ago

About the Position We are looking to hire an experienced ASIC Engineer to help us design, test and deploy advanced hardware designs. As part of our Ultra Low Latency team, you'll have the opportunity to collaborate with people in areas across the firm, including trading, networking and research infrastructure. We are looking for someone who can contribute to all of our projects and be happy to work on both FPGA-based and ASIC-based technologies. We're big believers in the ability of tools to imp

Full-time

ASIC Physical Design Engineer

New York, New York

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13d ago

About the Position We are looking to hire an ASIC Physical Design Engineer to help us design, test, and deploy advanced hardware. As part of our Ultra Low Latency team, you'll have the opportunity to collaborate with people in areas across the firm, including trading, networking, and research infrastructure. This isn't a traditional PD role. We're a small team where everyone works across the chip design process, and we expect our PD engineers to lead with physical design expertise but think lik

Full-time

Linux Engineer

New York, New York

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11d ago

About the Position Linux Engineers work with the critical infrastructure underlying the rest of the firm's technology. Members of this group are hard-working Systems Engineers, Administrators and Programmers, tasked with maintaining and improving the platform that powers Jane Street's production trading systems. Our mix of in-house and open source software allows you to investigate and innovate at every level. On any given day, you could be debugging kernel performance, developing management too

Full-time

Embedded Haskell Engineer, EW

Costa Mesa, California

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Today

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c

Full-time

USD 129,000.00 - 171,000.00 per year

Linux Engineering Manager

New York, New York

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13d ago

About the Position We are seeking a leader for our growing team of Linux Engineers. Members of this group, managers and individual contributors alike, are hard-working Systems Engineers, Administrators, and Programmers, tasked with maintaining and improving the platform that powers Jane Street's production trading systems. (Find out more about the Linux Engineer role here). We expect managers to come in and lead by example. As well as supporting their teams, the ideal candidate will be excited

Full-time

Windows Engineer

New York, New York

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13d ago

About the Position Our goal is to give you a real sense of what it's like to work at Jane Street full time while also providing a truly unparalleled educational experience. As an intern, you are paired with full-time employees who act as mentors, collaborating with you on real-world projects we actually need done. As a Windows Engineering intern, you'll work side by side with full-timers in the IT department to learn how we design, deploy, secure, and maintain the automation tools and key infra

Full-time

Front End Software Engineer

New York, New York

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13d ago

We're looking for a software engineer who is passionate about front-end development, user-interface design, and typed functional programming. You would take part in the design and implementation of our next-generation of browser-based tools for operating our trading infrastructure. We're building for expert users, which means we want to maintain a high UX bar, and at the same time create tools that are flexible and powerful enough to satisfy the needs of deeply engaged users. Beyond working on

Full-time

Compiler Engineer

New York, New York

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Today

Full-time

Software Engineer

New York, New York

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Today

Full-time

Meet us at ICFP 2026!

Indianapolis, Indiana

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30+d ago

We're looking forward to #ICFP2026 in Indianapolis! OCaml is our primary development language at Jane Street, and we're actively building new language features and formal verification tools. See our recent blog post, and come chat with out team at the conference.

Full-time

Data Engineer

New York, New York

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13d ago

About the Position Our goal is to give you a real sense of what it's like to work at Jane Street full time. Over the course of your internship, you will explore ways to approach and solve exciting problems within your field of interest through fun and challenging classes, interactive sessions, and group discussions - and then you will have the chance to put those lessons to practical use. As a Data Engineering intern, you'll learn how we turn messy, real-world data into reliable foundations for

Full-time

Hardware Engineer (FPGA/ASIC)

New York, New York

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Today

About the Position Our goal is to give you a real sense of what it's like to work at Jane Street full time while also providing a truly unparalleled educational experience. As an intern, you are paired with full-time employees who act as mentors, collaborating with you on real-world projects we actually need done. In this internship, you'll learn how we use tools to make programming faster, more pleasant, and more reliable. We apply these same principles to our hardware engineering work, and w

Full-time

Developer - .NET

Harrisburg, Pennsylvania

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Today

Developer- .NET This is a remote role D&H is growing! Join 100+ year old Employee-Owned technology distributor, offering end-to-end solutions for today's resellers, retailers, and the clients they serve across the SMB and Consumer markets. We are empowered by our employee Co-Owners who provide the industry's best service, and we promote a collaborative culture. We offer an Employee Stock Ownership Plan, 401k, Paid Time Off, Medical, Prescription, Dental and Vision benefits as well as Gym Rei

Full-time

Formal Methods Engineer

New York, New York

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Today

About the Position We're looking for software engineers and researchers to establish a new Formal Methods team at Jane Street. With the emergence of agentic programming, we think formal methods will play a major role in providing feedback for agents and helping validate agent-generated code. Our vision is to make formal methods as useful a tool for building software as type systems are for us today, both by leveraging existing tools and technology, and pursuing novel approaches. We're looking

Full-time