Jane Street Group, LLC has multiple openings for the position of Senior Software Engineer in New York, NY.

The position duties are as follows: Develop software in OCaml as part of the trading and operational infrastructure for a proprietary trading company.

• Support traders and other users of the company's technology infrastructure on Windows, Linux, and MacOS platforms;
• Analyze and respond in real-time to problems arising from the firm's technological infrastructure;
• Work in all parts of the software lifecycle, including gathering requirements, design, documentation, management of code review, creation of testing plans, as well as implementation and management of deployment and monitoring of the resulting software systems;
• Proactively identify, propose, and implement improvements to our systems including infrastructure optimization, reliability enhancements, and operational efficiency gains; and
• Train junior developers in all of the above.

The position requires a 3 or 4 year Bachelor's degree or foreign equivalent in Information Technology, Computer Science, Engineering or a related quantitative field plus two (2) years of experience in any occupation where an individual gains experience developing software. Experience must include:

• One (1) year of experience developing software using OCaml, including utilizing algebraic data types and pattern matching, applying functional programming principles, implementing concurrent operations, and optimizing code based on understanding of OCaml's runtime behavior;
• One (1) year of experience managing software release cycles and software QA processes;
• One (1) year of experience using the Mercurial distributed version control system;
• One (1) year of experience using asynchronous programming, typeful software design, and monadic programming;
• One (1) year of experience rapidly diagnosing and resolving software issues in time-sensitive production environments; and
• One (1) year of experience programming on the Linux platform, including working with network programming and scripting tools.
• All technical requirements for this role may be subject to employer conducted testing to assess minimum proficiency.

Part time telecommuting may be permitted with manager approval.

Ref. SSE26