Jobs at Jane Street

Interns work on FPGA and ASIC projects using OCaml and Hardcaml to design, test, and validate RTL. Paired with mentors, you'll build end-to-end hardware designs, use vendor tools (Vivado/Quartus/Genus/Innovus), and apply hardware construction languages in a networking context.

The Korea Trading Controls Specialist will design and implement trading controls, analyze market feedback, and collaborate with internal teams to enhance trading operations in Korea.

The Network Engineer will manage network security infrastructure, improve observability, collaborate with teams, and enhance network processes. Requires strong communication and analytical skills.

As an Events Coordinator, you'll manage event planning and execution, working with various departments to create engaging experiences for employees and recruits.

The HR Partner will support strategic and operational HR tasks, resolve employee issues, collaborate globally, and improve people processes.

As a Data Specialist, you will analyze, onboard, validate, and improve large data sets for trading while collaborating with engineers and traders.

This role requires managing financing transactions, developing relationships with brokers, optimizing financing strategies, and conducting cost-benefit analysis on financing opportunities.

The Learning and Development Specialist will design and facilitate engaging learning experiences, manage projects, and improve content based on feedback. Requires collaboration with HR and subject-matter experts.

The AML Onboarding Analyst will onboard trading counterparties, analyze counterparty risk, and develop compliance policies in collaboration with various teams.

As a Quantitative Researcher at Jane Street, you will build models, analyze datasets, create strategies for trading, and write implementation code, primarily in OCaml.

Lead and coordinate security initiatives: perform threat modeling, security audits, penetration testing, architecture reviews, and incident response; build security frameworks and SDLC practices; assess low-latency trading systems; implement controls and monitoring; mentor junior staff and work across multiple teams to translate security requirements into practical implementations.

Operate and improve trading desk workflows and infrastructure, building automation and quantitative tools. Monitor proprietary trading systems and market data, ensure correct trade booking and settlement, and coordinate with internal and external groups to resolve operational issues. Develop software (primarily OCaml and Python), maintain databases and spreadsheets, and train/join recruiting for junior staff.

Lead selection, implementation, integration, and lifecycle management of enterprise third-party applications. Drive vendor assessments, design SSO and API integrations, partner with cross-functional and international teams, mentor junior staff, produce technical documentation, and lead continuous improvement and customization initiatives to meet business needs.

The Commercial Contracts Attorney will review and negotiate contracts, support procurement processes, and advise teams on legal matters related to commercial contracts.

Build a Formal Methods team to develop practical tools that apply proof assistants, theorem provers, static analysis, and related techniques to validate agent-generated code and integrate those tools across the firm.

The IT Operations Engineer will support, configure and maintain systems across various platforms, respond to support requests, and optimize operations using automation tools.

The Cybersecurity Engineer will protect company infrastructure, lead cybersecurity awareness efforts, handle incident responses, and collaborate on security practices.

Build and grow a Formal Methods team to develop practical tooling that verifies and validates agent-generated code. Combine deep formal-methods research (proof assistants, theorem provers, static analysis, refinement types, program logics) with strong software engineering to create tools used across the firm.

We seek enthusiastic Software Engineers to design and build systems and tools, utilizing OCaml and Python for various tasks including data analysis and machine learning.

The analyst will conduct due diligence, perform valuation analysis, represent the firm in meetings, and communicate investment theses within a global capital markets team.