Jane Street

Machine Learning Performance Engineer at Jane Street, focusing on optimizing the performance of ML models for both training and inference. This role requires deep expertise in low-level systems programming, GPU optimization, and a whole-systems approach to performance, including storage and networking, within a high-frequency trading environment.

Jane Street is seeking a Machine Learning Engineer to join their ML team and drive the direction of their ML platform. The role involves building and maintaining training and inference infrastructure, enhancing research workflows, and applying ML to financial trading. Requires a strong mathematical background and expertise in ML frameworks.

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 and collaboration.

Senior Network Engineer to scale networks, drive standardization through automation, and explore AI/ML for operational improvements in a multi-vendor, highly available network infrastructure handling high-speed trading and internet connectivity.

Cybersecurity Engineer role focused on firm-wide defenses, providing expertise, leading awareness efforts, and handling incident response. Requires strong technical foundation, automation skills, threat modeling understanding, and good personal cybersecurity hygiene.

Cybersecurity Analyst responsible for developing and using monitoring tools, handling incident response and remediation, and promoting best practices within the firm.

Seeking a Workday Financials Specialist to support system administration, maintenance, and optimization through automation. The role involves collaborating with cross-functional teams, supporting reporting needs, ensuring data accuracy, and monitoring system updates for a global finance and technology infrastructure.

Software Engineering intern role at Jane Street, focusing on learning OCaml and Python, and contributing to real-world projects in high-performance trading systems and programming language design. The internship emphasizes mentorship, collaboration, and problem-solving.

Internship role focused on maintaining and improving the critical Linux infrastructure underlying a firm's technology, including production trading systems. Responsibilities include debugging kernel performance, developing management tools, and resolving production issues.

IT Operations Engineer internship focused on supporting, configuring, and operating various technology systems including desktop engineering, network, and application platforms. Responsibilities include responding to support requests, building/configuring devices, monitoring systems, and optimizing workflows using tools like PowerShell.

Internship role focused on trading desk operations, infrastructure management, and supporting trading systems. Involves data queries, stakeholder coordination, and designing solutions for trading and operations issues. Aims to provide a comprehensive understanding of the trading product lifecycle and regulatory considerations.

Interior Designer/Architect role focused on creating functional and innovative office spaces that reflect Jane Street's culture, collaborating with internal teams and managing external vendors.

Jane Street is seeking a FIX Onboarding and Connectivity Engineer to enhance their trading capabilities and client services. This role involves managing technical processes for accessing new products and exchanges, onboarding clients, and collaborating with trading and technology teams to build advanced connectivity systems. The engineer will prioritize requests, work with various teams, and ensure successful production onboarding. They will also contribute to team process improvements and project delivery strategies, requiring strong communication, coordination, and Unix command-line proficiency, along with coding skills.

Software Engineers to design and build systems and tools for a trading firm, covering areas from trading desks to foundational infrastructure. Experience with functional programming (OCaml) and Python for data analysis and ML is mentioned, but talent in any language is valued.

Jane Street is seeking Linux Engineers to maintain and improve the critical infrastructure for their production trading systems. This role involves debugging kernel performance, developing management tools, resolving production issues, and focusing on deployment automation, configuration management, and monitoring. The ideal candidate has deep knowledge of Unix internals and the Linux ecosystem, with experience in systems programming concepts.

Jane Street is seeking a Trading Desk Operations Engineer to manage and optimize desk infrastructure, support trading systems, design solutions for trading and operational issues, and communicate with external parties for trade settlement. The role emphasizes hands-on building of tools for efficient trading operations within a fast-paced financial environment.

Seeking a talented engineer to manage and automate internal Windows infrastructure, including servers and desktops. Responsibilities involve improving, automating, and standardizing the Windows environment using scripting languages like PowerShell, Python, or C#. The role requires collaboration with a global team to resolve issues, plan deployments, and maintain high standards of performance and reliability.

IT Operations Engineer to support, configure, and maintain systems including desktop environments, network infrastructure, and application platforms. Responsibilities include responding to tech support requests, building/configuring systems, supporting Windows domain infrastructure, monitoring systems, and optimizing operations using automation tools like PowerShell. Collaborates with technically sophisticated users and specialized teams to maintain infrastructure powering trading operations.

Seeking a Cybersecurity Engineer with an offensive security background to join the Cybersecurity team. The role involves hands-on vulnerability identification and remediation, partnering with teams to integrate security from the ground up, and performing threat modeling. Responsibilities include analyzing security implications, building security solutions, and communicating security principles to system owners. The role requires strong technical skills, problem-solving abilities, and excellent communication.

Seeking an experienced Facilities Operations Engineer for a technical group managing physical infrastructure, including trading floors and IT equipment, in 24/7 critical environments. Responsibilities include project management, stakeholder relations, and ensuring maintenance SLAs are met. Requires professional training in electrical, mechanical, or building services engineering, or equivalent experience, with a focus on operational risk and engineering decision-making.

Experienced evening shift Move-Add-Change (MAC) Engineer to support IT Operations in improving desktop trading floor landscapes. Responsibilities include PC setups, deployments, asset management, procurement, user onboarding, desktop technology relocation, and infrastructure expansion projects. The role involves using automated tooling for efficiency and working with vendors. Requires hands-on experience with technical infrastructure projects, hardware, networking, and scripting (PowerShell is a plus).

Unified Communications Engineer to manage global voice and video infrastructure, including end-user setup, asset management, and collaboration/telephony systems. Responsibilities include improving tooling, monitoring, hardware refreshes, and software/hardware configuration changes. The role involves multitasking, alarm monitoring, project tasks, and serving as an escalation point. Collaboration with IT Operations, Cybersecurity, and Networking teams for capacity planning, standards development, and documentation is key. Requires expertise in Cisco UC and Collaboration Product Suite, SIP, UC compliance products, and API automation with Python/PowerShell.

Data Engineer to transform messy real-world datasets into reliable inputs for research and trading, working closely with trading desks to identify data needs, evaluate datasets, and build pipelines for ingestion and transformation.

Cybersecurity Analyst responsible for developing and using monitoring tools, incident response, remediation, threat hunting, and improving detection capabilities and automation.

This role focuses on building and maintaining desk infrastructure, supporting trading systems, and implementing solutions for trading and operational issues within a fast-paced financial environment. It requires strong technical, organizational, and communication skills, with an emphasis on hands-on problem-solving and collaboration.

Data Centre Engineer responsible for designing, building, scaling, and maintaining data centre infrastructure, including hardware, cabling, and network equipment, ensuring security, organization, and operational efficiency.

Production Engineers at Jane Street are software developers who split their time between developing software and providing high-quality support for critical trading systems. They work alongside application developers, taking ownership of the architecture and design of systems that monitor and support the firm's trading, and design/develop their own tools. The role requires strong programming skills, intellectual curiosity, and excellent communication, particularly during production incidents. OCaml is the primary development language.

Linux Engineers at Jane Street are responsible for maintaining and improving the critical infrastructure that powers the firm's production trading systems. This involves debugging kernel performance, developing management tools, resolving production issues, and focusing on deployment automation, scalable configuration management, and monitoring. The role requires deep knowledge of Unix internals and the Linux ecosystem, systems programming concepts, and strong troubleshooting skills.

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.