Jobs at Jane Street

Join Jane Street’s trading Operations team, initially learning daily processes and developing expertise in products and workflows. Over time, identify inefficiencies, redesign processes, improve tools and systems, reduce handoffs, and apply AI where useful. The role involves solving ambiguous problems, communicating complex ideas clearly, driving process improvements, and collaborating across Operations teams to implement changes and achieve adoption.

Supports UK and EU regulatory position reporting and disclosure obligations for a global trading business. Monitors positions, prepares submissions, reviews disclosure requirements, interprets regulatory changes, advises trading desks, improves compliance tools and controls, and responds to internal and external queries. The role requires strong attention to detail, sound judgment, communication skills, and comfort working with data and technology.

Develop and use cybersecurity monitoring tools, investigate and remediate security incidents, and protect company employees, data, and infrastructure. The role requires methodical threat investigations, programming, threat modeling, security decision-making, incident response, and communicating cybersecurity best practices across the firm while mentoring and learning from colleagues.

Secures Jane Street’s Windows and macOS platforms by deploying endpoint security controls, managing vulnerabilities, supporting incident response, and developing automation, playbooks, procedures, and standards. The role collaborates closely with IT, engineering, and operations teams to troubleshoot security and production issues, analyze logs and trends, and communicate security guidance across the firm.

Maintains books and records for European businesses and prepares monthly and annual financial statements. Responsibilities include reviewing reconciliations, supporting schedules, collaborating with auditors, interpreting accounting standards, documenting policies and controls, and improving accounting processes with technology teams.

Build and maintain trading desk infrastructure, support trading systems and workflows, execute data queries, solve operational issues, and coordinate with traders, developers, clearing firms, and external counterparties. The role combines coding, process optimization, stakeholder communication, trade settlement support, and collaborative problem-solving in a fast-paced environment. Mentorship and training are provided, and prior finance experience is not required.

Supports the design, deployment, security, maintenance, and automation of Windows desktops, servers, and company infrastructure. Develops Windows automation and configuration-management tools, improves CI/CD systems and cross-platform frameworks, enhances monitoring and scalability, and streamlines coding and deployment workflows. Works with OCaml, F#, PowerShell, and .NET technologies alongside experienced engineers on mission-critical projects.

Create print and digital assets across recruiting, events, conferences, puzzles, games, swag, packaging, logos, and brand systems. Translate complex financial, technological, and mathematical concepts into clear, engaging visual designs. Manage multiple projects from brief through production, collaborate with stakeholders, present work, incorporate feedback, and provide constructive design guidance.

Design and implement browser-based trading tools with polished, sophisticated UIs. Build reusable UI libraries and abstractions, collaborate across the stack, and work closely with traders to capture user needs. Emphasizes typed functional programming and high UX standards.

Provide hands-on support for network issues, enhance workflows, focus on automation, and integrate AI in network operations.

The Windows Engineer will manage and optimize the Windows infrastructure, automate deployment processes, and collaborate globally to resolve issues and document outcomes.

As a Technical Product Manager, you'll lead engineering projects, manage timelines, and coordinate with teams to ensure timely delivery and optimal outcomes.

Support, configure and maintain desktop, server and network systems across Windows, Linux and macOS environments. Troubleshoot end-user issues, manage Windows domain infrastructure (AD, Group Policy), support MDM (Workspace ONE/Jamf), monitor critical systems, and build automation (PowerShell/Bash/Python) to reduce manual toil and scale IT operations.

Manage the firm's capital usage, cost allocation, and position management systems; reconcile margin and billing models; execute funding and financing trades; build automation, monitoring, and visualization tools; identify and remediate financing inefficiencies; collaborate across teams and external counterparties.

Machine Learning Engineer needed to enhance ML platform, build infrastructure, and utilize ML frameworks to solve problems in a financial context.

The Machine Learning Researcher will build deep learning models for trading strategies, collaborating with a team to optimize systems and approaches to tackle market challenges.

As a Cybersecurity Engineer, you'll assess threats, remediate vulnerabilities, and guide teams in building secure applications while fostering collaboration across departments.

Design, implement, test and document scalable Windows platform security controls. Automate security workflows and integrate security products via APIs. Manage endpoint security, vulnerability scanning and patching, investigate emerging threats, and advise IT teams on remediation and best practices.

Operate, scale, and improve network security infrastructure. Design and deploy perimeter security, manage segmentation/DMZ, evaluate security platforms, collaborate on threat detection/mitigation, and enhance observability and automation.

Manage engineering initiatives through the entire lifecycle, coordinating projects, communicating schedules, and ensuring timely delivery while collaborating across teams.