Jane Street

This role focuses on maintaining and improving the critical Linux infrastructure that powers Jane Street's production trading systems. Responsibilities include debugging kernel performance, developing management tools, resolving production issues, and implementing deployment automation, configuration management, and monitoring. The ideal candidate has deep knowledge of Unix internals, Linux systems, and systems programming concepts.

Jane Street is hiring Production Engineers in London. This role involves both software development and providing support for critical trading systems. Production Engineers work embedded in software teams or in standalone teams, collaborating with application developers. The role emphasizes functional programming, OCaml, and solving real-time issues to make a firm-wide impact. They own the architecture and design of monitoring and support systems, and develop their own tools. The role requires strong programming skills, intellectual curiosity, and excellent communication, especially during production incidents.

Jane Street is hiring Production Engineers in New York. This role involves a split between OCaml software development project work and a support rotation, where engineers resolve live issues in critical trading systems. Production Engineers interact with various departments, own system architecture and design for monitoring and support, and develop internal tools. The role requires strong programming skills, intellectual curiosity, and excellent communication, particularly during production incidents. The firm emphasizes functional programming and OCaml.

Seeking an experienced Senior Data Center Engineer to design, build, scale, and maintain data center infrastructure, ensuring data safety and accessibility. Responsibilities include hands-on work, process optimization, project management, and collaboration with various internal and external teams.

Seeking a Technical Program Manager to provide organization and coordination for engineering initiatives in a core technology business. The role involves leading projects through their lifecycle, defining goals, managing timelines, tracking milestones, identifying risks, and communicating status. Requires strong communication, strategic thinking, and the ability to manage competing priorities in a fast-paced, flexible environment. Experience with software development project management and planning tools is essential.

Quantitative Trader role at Jane Street, a technology-focused trading firm. Responsibilities include developing models, managing risk, and trading on pricing inefficiencies using proprietary systems. The role emphasizes a strong quantitative background and collaborative problem-solving, with technology being central to their approach. OCaml is the primary development language.

Quantitative Trader role at Jane Street, a trading firm that heavily relies on technology and proprietary models. The role involves seeking and trading on pricing inefficiencies, developing models, managing risk, and investigating new products. It emphasizes a strong quantitative mind and collaborative problem-solving. New traders receive training and increasing responsibility. The firm uses OCaml as its primary development language.

This role focuses on automating infrastructure processes within a financial trading environment, involving coding, process optimization, and tool development. It requires understanding trading cycles and regulatory considerations.

Seeking an engineer to manage and automate internal Windows infrastructure, including servers and desktops, focusing on performance and reliability. Requires scripting experience (PowerShell, Python, C#) and collaboration within a global IT Engineering team.

Engineer to manage and automate internal Windows infrastructure, including servers and desktops, focusing on performance and reliability. Requires scripting/programming experience (PowerShell, Python, C#) and collaboration within a global IT Engineering team.

Software Engineer role at Jane Street, a trading firm that uses technology at the core of its business. The role involves working with OCaml and Python, with Python being used for data analysis, visualization, and machine learning. The company values open-source software and collaborative work. No prior experience in functional programming, OCaml, Python, or finance is expected, as training will be provided.

Software Engineer role at Jane Street, a trading firm that uses technology at the core of its operations. The role involves using OCaml and Python for data analysis, visualization, and machine learning. The company values open source and collaboration. No prior experience in functional programming, OCaml, Python, or finance is expected, as training is provided.

Quantitative Trader role at Jane Street, a technology-driven trading firm. Focuses on developing models, managing risk, and executing trades using proprietary technology and a functional programming language (OCaml). The role involves learning and growing within a collaborative, problem-solving environment.

This role focuses on maintaining and improving the critical Linux infrastructure that powers Jane Street's production trading systems. Responsibilities include debugging kernel performance, developing management tools, resolving production issues, and implementing deployment automation, configuration management, and monitoring. The ideal candidate has deep knowledge of Unix internals and Linux, with practical experience in systems programming and troubleshooting.

Jane Street is hiring an experienced Software Engineer to join their OCaml Language team. This role focuses on improving OCaml for their technology stack, collaborating with the OCaml community. Responsibilities include enhancing the type system, optimizing code performance, improving compiler speed and usability, and developing toolchain tools for profiling, debugging, and documentation. Most work is open-source.