Jane Street

Machine Learning Performance Engineer role focused on optimizing the performance of ML models for both training and inference. Requires deep low-level systems programming and GPU knowledge, debugging skills, and experience with ML libraries and distributed training.

Seeking an engineer with low-level systems programming and optimization experience to join the ML team, focusing on optimizing the performance of ML models for both training and inference in a real-time trading environment. This role requires a deep understanding of GPU architecture, networking, and distributed systems to ensure efficient large-scale training and low-latency, high-throughput inference.

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.

Machine Learning Engineer at Jane Street to drive the direction of their ML platform, focusing on building and maintaining training and inference infrastructure, enhancing research workflows, and applying ML to financial trading. Requires strong mathematical foundations and experience with ML frameworks.

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.

Jane Street is seeking a Machine Learning Engineer with a strong mathematical background to join their ML team and drive the direction of their ML platform. The role involves applying various ML techniques to aid decision-making in their trading environment, enhancing research workflows, and building/maintaining training and inference infrastructure to move concepts to production.

Quantitative traders at Jane Street identify market signals, analyze strategies, build quantitative and algorithmic trading systems, manage risk, and develop new businesses. They use a wide range of statistical and ML techniques, from linear models to deep learning, on large datasets and computing clusters.

Seeking an experienced Data Center Mechanical Engineer to manage cooling infrastructure for high-density AI workloads, supporting trading operations. This role involves designing, implementing, and monitoring power and cooling systems, bridging theoretical design with practical compute needs, and collaborating with ML researchers and engineers. Requires deep understanding of data center infrastructure from power distribution to chip level, with a focus on GPU/HPC systems.

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.

Software Engineer role at Jane Street, a quantitative trading firm. The role involves using technology across various business areas, with a focus on functional programming (OCaml) and increasing use of Python for data analysis, visualization, and machine learning. The company values open-source contributions and offers training in necessary technologies.

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. Responsibilities include data center initiatives, WAN optimization, stakeholder interfacing, leading support and improvements, and documenting solutions. The role involves a passion for innovation, building scalable systems, and curiosity about AI in network operations.

This role focuses on network analysis and support, with an emphasis on building automation and DevOps-driven solutions. The analyst will enhance existing workflows, streamline processes, and ensure network stability, security, and adaptability. Key responsibilities include diagnosing and resolving network issues, supporting site expansions, maintaining monitoring systems, and using scripting/development tools for automation and AI integration.

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.

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 supporting distributed systems and high-speed trading.

Jane Street is seeking an ASIC Physical Design Engineer for their Ultra Low Latency team. This role involves designing, testing, and deploying advanced hardware, with a focus on owning the physical design flow end-to-end while also having the ability to read/write RTL and understand front-end/back-end design interactions. The ideal candidate has 8+ years of experience in modern physical design flows and is interested in leveraging software engineering techniques and better tools to improve the hardware design process.

Video Editor (1 Month Fixed-Term) to join a creative team, editing a 3-4 minute promo/documentary-style video, working from a paper cut to shape narrative, build musical arc, and construct b-roll sequences. Will also cut interview footage snippets for other formats during revision waiting periods. Proficiency in Premiere Pro or DaVinci Resolve required.

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 Engineer role focused on protecting company infrastructure, data, and people. Responsibilities include firm-wide defenses, providing expertise, leading awareness efforts, and handling event analysis and incident response. Requires strong technical foundation, automation skills, threat modeling understanding, and awareness of cybersecurity developments.

Cybersecurity Engineer to protect company's people, data, and infrastructure. Responsibilities include firm-wide defenses, providing expertise, leading employee awareness efforts, and handling event analysis and incident response.

Cybersecurity Engineer to protect company's people, data, and infrastructure. Responsibilities include firm-wide defenses, providing expertise, leading employee awareness efforts, and handling event analysis and incident response.

Jane Street is hiring an ASIC Physical Design Engineer to join their Ultra Low Latency team. This role involves designing, testing, and deploying advanced hardware, with an emphasis on owning the physical design flow end-to-end while also having the ability to read/write RTL and understand cross-functional design decisions. The team utilizes Hardcaml, a hardware development toolchain embedded in OCaml, and seeks engineers interested in improving hardware design processes with software engineering techniques.

Logistics Coordinator role focused on managing equipment inventory, delivery, installation, and deployment for offices, data centers, and co-locations, with responsibilities including logistics planning, call-off process management, installation coordination, inventory level management, asset transfers, customs broking, and process improvements. Requires 5+ years of experience in logistics and project management, preferably in IT or data center environments, with strong communication and problem-solving skills.

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

Experienced Network Engineer to join the Network Security team, focusing on running, scaling, and improving network security infrastructure. Responsibilities include hands-on operations, design, implementation, managing firewalls and proxies, network segmentation, threat detection, and evaluating new security platforms.

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.

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.

Seeking an AV Engineer with an events focus to lead technical execution and user experience for in-house events. Responsibilities include technical direction, AV equipment operation, vendor management, troubleshooting, and developing best practices for global replication. The role also involves supporting conference rooms, deployments, and project work.

Experienced Senior Data Center Engineer to design, build, scale, and perform daily upkeep in a regional data center. This role involves hands-on work, project management, and collaboration with interdisciplinary teams including Network, Server, Facilities Engineering, Research, and Trading teams.

Seeking an experienced Construction Project Manager/Engineer to design, construct, and operate data centers, focusing on planning, overseeing projects, managing schedules and budgets, and coordinating with various internal and external stakeholders.

Seeking a Dividend Trader in London to trade index and single stock dividend futures, manage dividend exposure, and grow European dividend trading capabilities. Requires 3+ years of dividend trading experience, strong quantitative skills, and Python programming is preferred.

Security Operations Engineer role focused on deploying and implementing security controls, managing vulnerabilities, and responding to security incidents within an IT infrastructure. Requires experience with Windows, macOS, and identity platforms, scripting for automation, and strong troubleshooting skills.

Qualified Accountant to join Financial Reporting team, responsible for maintaining books and records for European businesses, preparing financial statements, and collaborating with accounting teams globally. Role involves preparing reconciliations, supporting financial statements, working with auditors, and documenting policies. Opportunity to improve and automate processes with the accounting-specific Technology team.

Seeking a Technical Program Manager to provide organization and coordination for engineering initiatives in a core technology group that builds and optimizes trading technology. The role involves leading projects from definition to delivery, managing timelines, risks, and communication across various teams, including external financial entities. Requires strong technical background, communication skills, strategic thinking, and comfort with ambiguity.

Identity Security Engineer with a strong background in engineering hybrid Windows platforms, focusing on securing access to IT platforms, implementing security controls, identifying security gaps, and providing technical leadership for cloud adoption.

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 an experienced Campus Recruiter to hire interns for their Software Engineering teams. The role involves managing the full recruitment pipeline, bringing fresh ideas to processes, and contributing to the growth and diversification of recruiting efforts. The ideal candidate has 5+ years of recruiting experience, preferably in university tech recruiting, and possesses strong organizational, communication, and problem-solving skills.

Seeking a Unified Communications (UC) Engineer to manage and grow global voice and video infrastructure. Responsibilities include improving tooling, deploying UC products, executing configuration changes, and acting as an escalation point. The role involves collaborating with IT Operations, Cybersecurity, and Networking teams on capacity planning, standards, and documentation.

Operations Specialist role at Jane Street focused on managing trade settlements, trade record and position management, or cost and cash management. Requires working with large datasets to find patterns and irregularities, and improving data processing efficiency. No prior finance experience needed, emphasis on learning and critical thinking.

Software Engineering intern role at Jane Street, focusing on learning OCaml and Python while working on real-world projects in high-performance trading systems and other areas. The internship emphasizes problem-solving, collaboration, and learning.

Experienced Facilities Operations Engineer to manage and maintain physical infrastructure for trading floors and amenity spaces, ensuring 24/7 critical operations. Requires expertise in MEP systems, data center maintenance, and managing SLAs, with a collaborative approach to stakeholder and vendor relations.

Seeking an experienced ASIC Engineer to design, test, and deploy advanced hardware designs for the Ultra Low Latency team. The role involves collaboration across trading, networking, and research infrastructure, with opportunities to work on both FPGA and ASIC technologies. Experience with RTL design, verification, and ASIC design flows (Synopsys or Cadence) is required. Familiarity with software engineering techniques and high-level programming languages is a plus.

Seeking an experienced ASIC Engineer to design, test, and deploy advanced hardware designs for the Ultra Low Latency team, collaborating across trading, networking, and research infrastructure. The role involves both FPGA and ASIC technologies, with an emphasis on improving hardware engineering productivity through advanced tools like Hardcaml (OCaml-based).

IT Security Engineer with a strong Windows engineering background and practical exposure to modern platform security controls. Responsibilities include proposing, designing, testing, implementing, and documenting strategic security controls, coordinating security solutions, identifying opportunities to automate workflows, securing internal IT and remote working platforms, building scalable security controls, investigating emerging threats, developing new security tooling, and driving vulnerability management initiatives. The role requires proficiency in securing Windows OS platforms, hands-on experience with integrated security technologies, skills in administering endpoint security and vulnerability management solutions, knowledge of security best practices, understanding of common threat tactics, techniques, and procedures, familiarity with Windows core infrastructure services, and proven experience automating workflows in PowerShell or other scripting languages.

Jane Street is seeking an experienced educator to develop and deliver courses on OxCaml, a specialized branch of OCaml, to internal engineers. The role involves creating educational materials, teaching new hires and experienced developers, and mentoring other educators, while also contributing to the development of OxCaml through coding.

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.