Jane Street Group, LLC jobs

Facilities Operations Engineer Singapore About the Position We are looking for an experienced Facilities Operations Engineer to join a highly technical group responsible for operating and maintaining our physical infrastructure. This includes work on our trading floors, amenity spaces and food service areas which are all supported by dedicated mechanical, electrical and IT equipment. Our team is collaborative in nature, spanning many internal departments and external vendors, contractors, consultants and operations teams. Your work will involve managing projects that cover all aspects of our physical infrastructure, along with our relationships with each of these stakeholders, in order to provide 24/7 critical infrastructure. We are looking for someone who is professionally trained in electrical, mechanical or building services engineering, or has equivalent experience in engineering facilities management. You should also have experience with managing facilities maintenance service level agreements (SLAs) to ensure the scope meets industry standards and service-level agreements (SLAs). You are encouraged to apply, regardless of your specific discipline, if you have a proven ability to deliver excellence no matter the task, have solid technical experience and can make well-reasoned engineering decisions as they relate to operational risk. About You - Have 5+ years of experience working on the maintenance and operation team of mission-critical data centres, trading floors or similar 24/7 environments - Familiar with MEP disciplines including plant infrastructure, CRACs, UPSs, office HVAC, generators, fire prevention and building management systems - Have strong computer skills; comfortable working with technical people in an IT-centric environment and learning new

Mobility/MDM Engineer London, England, United Kingdom About the Position We are seeking an experienced engineer with a strong background in mobile device management (MDM) and remote device solutions. You will play a key role in engineering, managing and maintaining a growing fleet of thousands of iOS and Android devices and ensuring seamless connectivity to essential apps and services that support our business needs. In this position, you'll focus on improving, automating and standardising our fleet of corporately owned and BYOD-managed devices and its supporting infrastructure. This will involve developing and maintaining PowerShell scripts, optimising MDM systems and collaborating globally to resolve issues, deploy updates and enhance systems in this growing and fast-moving domain. You will also develop new solutions for business problems and architect integrations to meet the requirements of a variety of stakeholders. Strong communication and interpersonal skills will be needed as you collaborate with colleagues across the firm globally to find and resolve issues, plan and execute deployments and improve systems where possible. Getting the details right and keeping good records are critical in this role. Good troubleshooting skills are essential and you'll be expected to clearly document problem resolution resulting from root cause analysis. This role is part of our IT Engineering group, a dedicated team that architects and manages a global physical, virtual and mobile computing environment. Your analytical skills and expertise will directly support our colleagues and ensure the highest standard of system performance. About You - 5+ years of proven engineering experience with MDM/UEM

Trading Desk Operations Engineer Hong Kong, Hong Kong About the Position We are looking for individuals eager to use their technical, organizational, and communication skills in a fast-paced environment to join our TDOE team. Our TDOE's are integral to the firm's success, building and maintaining desk infrastructure that supports the trading of thousands of financial products across 200 venues in over 45 countries. Trading Desk Operations Engineers wear many hats, helping to manage the operational side of the trading desk's activities and interfacing with various groups within the firm to ensure our work is accurate and efficient. You'll work alongside traders and developers to take on projects like: - Managing and optimizing infrastructure and operational processes - Supporting trading systems and workflows by executing data queries and coordinating with stakeholders - Designing and implementing solutions for a range of trading and operational related issues on the desk - Communicating with clearing firms and external counterparties to settle and clear trades Our trading desks are central to our collaborative office environment, and we believe the best way to integrate new hires is through a hands-on, interactive approach. You'll receive mentorship from other TDOEs, traders, and developers as you take part in a number of development and training programs over your first few months. We don't expect you to have a background in finance or any other specific field - we're looking for curious people who enjoy solving interesting problems. We're more interested in how you think and learn than what you

Data Centre Engineer Hong Kong, Hong Kong About the Position We are looking for an experienced Data Centre Engineer who can help our team keep Jane Street's data safe and accessible around the clock, which will involve a mix of hands-on work in our data and colocation centres, process thinking and project management. Your work will mostly involve designing, building, scaling and performing daily upkeep in our regional data and colocation centres. You'll also get to collaborate with really talented people from all different areas of expertise across Jane Street to optimise our data environments and prevent major problems before they happen. You will join an interdisciplinary team made up of several groups across Jane Street, including our Network, Server, Facilities Engineering, Market Data and Trading teams, along with some external data centre operators, colocation and smart hands service providers, and cabling, hardware and telco vendors. Together, you will: - Design plans for new equipment deployments using data centre best practices - Coordinate logistical tasks across locations, including procurement, shipping, moving and keeping inventory of our equipment, cabling and parts - Install and configure server OS in a PXE environment (fundamental Linux knowledge is required to deploy our network equipment) - Install, cable, configure and troubleshoot different types of network and server equipment - Ensure that all our data centres uphold the highest standards in terms of security, organisation, documentation, safety, cleanliness and supply management This role provides on-location services that are crucial to our daily operations in Hong Kong,

Market Data Specialist, Metadata London, England, United Kingdom About the Position We're looking for a Market Data Specialist to join our Metadata team, working on improving and supporting our internal golden copy Security Master and Corporate Action Management systems. You'll be responsible for configuring our systems to improve data quality, helping with data cleaning and validation, solving support issues for internal clients, and interfacing with our data providers. You'll be embedded into the Metadata Systems Engineering team and will work with software developers, traders, and operations professionals across the firm. Responsibilities include: - Investigating data quality and reliability issues - Interfacing with exchanges or data vendors, raising, tracking, and resolving issues - Helping us (the Metadata team and internal clients) understand our data better - Potentially advising on solutions, e.g., changing monitoring - Configuring internal services/tools and adding overrides About You - Strong debugging and troubleshooting skills - Excellent written and interpersonal communication skills - Experience with financial instrument metadata, especially reference data preferred - Programming experience in any language and knowledge of SQL or other database language(s) - Confident in a Linux/Unix command-line-driven environment - Responsible, organised, and great attention to detail - Operations, support, and customer-centric experience a plus - Fluency in English required If you're a recruiting agency and want to partner with us, please reach out to [email protected] .

Korea Trading Controls Specialist Hong Kong, Hong Kong About the Position We are looking for a Korea-focused Trading Controls Specialist to join our Hong Kong team. This person will focus on interpretation, design, and implementation of pre- and post-trade controls, whilst working with various internal teams to advise on, analyze and support the continued development of our business in Asia. Additional responsibilities of this role will include: - Gathering continuous feedback from brokers and exchanges on Korea UTP and short sell rules and other trading sensitivities to help advise and guide the business to make informed decisions - Building relationships with onshore counterparties to gather colour on regulatory and market sentiment about the feedback from counterparties - Working closely with our Korea Business Development, Trading, Compliance and Technology teams to translate the rule interpretations into our controls framework - Monitoring and evaluating new flows/increases in trading and their interaction with controls About You - Have 8+ years of relevant experience in trading controls design and implementation - Knowledgeable and experienced with Korea exchange rules (any broader APAC experience would be a plus) - Familiar with electronic trading regulations as well as system design - Experience working with devs (some coding skills would be a plus, but not required) - Fluent in English and Korean If you're a recruiting agency and want to partner with us, please reach out to [email protected]

Recruiting Coordinator New York, New York, United States About the Position We're looking for several Recruiting Coordinators to join our New York team. We want organized, proactive go-getters who are excited to learn and grow on a collaborative team, and care as deeply as we do about getting the little things right and maintaining a warm, welcoming, people-first approach to recruiting. While you should have some professional experience, no prior recruiting experience is required - we can teach you what you need to know. We're hiring for a few different openings across a range of disciplines on the team. Below is an idea of the focus areas you might be asked to support: - Campus, Early Careers Partnerships and Initiatives: Supporting our campus recruitment strategy, including engagement and communications with prospective candidates, external partnership relationships, planning and executing recruitment events and programs, representing us at these events, and managing job and event postings. This area involves regular travel. - Campus Infrastructure Recruiting: Supporting our campus pipelines for infrastructure roles, including coordinating interviews, managing candidate logistics and communications, and supporting related recruitment events. - Experienced Hire, Non-Technology: Supporting lateral hiring for our Infrastructure and Trading teams, including scheduling interviews, managing recruiting calendars, coordinating live interviews, and keeping our applicant tracking system up to date. - Experienced Hire, Technology: Supporting lateral hiring for our software engineering and other technical roles, including scheduling phone screens and on-sites, managing calendars, and coordinating live interviews. - Recruiting Operations: Keeping our recruiting systems running smoothly, building

Talent Development Specialist New York, New York, United States About the Position We are looking for an enthusiastic self-starter with excellent communication skills to join our Talent Development team. Our Talent Development Specialists help organize and run a variety of internal programs, such as our Tech and Strategy & Product internships. Additionally, you may support various rotational programs and internal education offerings for full-time employees across different departments. You will work closely with key program stakeholders across HR and other areas of the firm to execute daily tasks involved with preparing for our high-priority programs, providing on-site support during programs, and tracking feedback and historical data. Additional responsibilities of the role will include: - Coordinating all aspects of learning and development programs, including scheduling events, managing rosters, creating materials, and overseeing logistics - Preparing and analyzing participation data and feedback with exceptional attention to detail and accuracy; identifying and proposing areas for improvement - Responding to employee queries and fielding to other team members as appropriate - Being the on-site point of contact available to support participants and programs as they're running - Assisting with talent development and other company-wide projects and initiatives About You - Have a bachelor's degree or equivalent relevant practical experience, and 3-6 years of experience in program/project management or a related field - Proactive and self-motivated with strong organizational skills and attention to detail - Interested in understanding and improving processes - Able to handle competing priorities in a challenging, fast-paced environment - Strong analytical

Linux Engineering Manager London, England, United Kingdom About the Position We are seeking a leader for our growing team of Linux Engineers. Members of this group, managers and individual contributors alike, are hard-working Systems Engineers, Administrators, and Programmers, tasked with maintaining and improving the platform that powers Jane Street's production trading systems. (Find out more about the Linux Engineer role here ). We expect managers to come in and lead by example. As well as supporting their teams, the ideal candidate will be excited to start off as an individual contributor, establish a fundamental understanding of Jane Street's technical environment, and gradually grow into a management role. We are looking for people who are enthusiastic about our values: honesty, cooperation, intellectual curiosity, humility, and a quantitative approach to decision making and problem solving. To succeed in this role, they should be Linux Engineers at heart who have grown into several of the following areas: people management, project and programme management, large-scale coordination and communication, partnership facilitation, short- and long-term planning, and service delivery, among others. About You We are looking to hire a Linux Engineer Manager with a strong technical background and solid leadership experience. Candidates are expected to lead by example, prioritising their individual technical work and their leadership responsibilities accordingly. They should have a willingness to learn OCaml, our language of choice, and meet the following requirements: - Bachelor's degree in Computer Science, Software Engineering, or other technical discipline (or equivalent experience) - Clear and concise communication skills,

Procurement Specialist, IT Services New York, New York, United States About the Position We are looking to add a Procurement Specialist to our growing Global Procurement team. In this newly created role, you'll provide end-to-end sourcing and procurement support for technology services in the Americas, which includes SaaS, cloud-based, IT, co-location, and telecom. Responsibilities of the role will include: - Collaborating with internal stakeholders to anticipate needs and manage renewals, ensuring alignment on key project requirements and expected outcomes - Cultivating robust vendor partnerships through effective communication and ensuring supplier performance aligns with business goals - Negotiating and redlining agreements in collaboration with our legal team - Using creative negotiation strategies and tactics to engage with vendors and formulating contracts that encompass our needs while ensuring compliance and protection of our interests - Executing full-cycle RFP processes, from development to bid analysis and award - Efficiently issuing purchase orders and reconciling any invoicing discrepancies About You - 5-10 years of related experience, with a deep understanding of RFPs, MSAs, and SOWs - Exceptional communicator; can articulate complex procurement terms and conditions - An independent worker who is confident and effective, even when direction is limited - Can work effectively amidst complex and ambiguous scenarios - Strong negotiator; capable of both working collaboratively and leading project management activities - Can manage both strategic projects and operational tasks, like generating purchase orders - Proficient with P2P systems (e.g., Oracle, Ariba, Coupa, Workday) - Wants to understand both the macro-level strategies and micro-level

Formal Methods Engineer London, England, United Kingdom About the Position We're looking for software engineers and researchers to establish a new Formal Methods team at Jane Street. With the emergence of agentic programming, we think formal methods will play a major role in providing feedback for agents and helping validate agent-generated code. Our vision is to make formal methods as useful a tool for building software as type systems are for us today, both by leveraging existing tools and technology, and pursuing novel approaches. We're looking to build a new team with engineers who have: - Deep experience with formal methods. There's no specific checklist. We're broadly interested in people with backgrounds in interactive proof assistants, automated theorem provers, static analysis, refinement types, program logics, property-based testing, and related areas. - Top-notch software engineering skills. We're looking for people who can turn cutting-edge research ideas into practical tools, and get these tools in use across the firm and beyond. - Strong interpersonal skills. Software engineering at Jane Street is highly collaborative, and we're looking for people who can work effectively in small, close-knit teams. We are interested in exploring a wide variety of approaches. While we are eager to integrate new tools into our existing infrastructure, no previous experience with OCaml or functional programming is required. Why do it here? The whole world is thinking about what agents mean for the future of programming, and there's no shortage of efforts trying to mix formal methods and agents. But think there

Compensation Specialist New York, New York, United States About the Position We are looking for a detail-oriented Compensation Specialist to help our growing Compensation team with a wide range of operations and analytical work, while partnering closely with many teams, managers, and employees across the firm. Day to day, you will support high-volume compensation operations, including offer modeling and production, as well as year-end processes and a variety of other operational workflows. You will also take on some analytical and project-based work, such as participating in broad market data surveys, conducting compensation deep dives on specific job families, and exploring broader questions such as regionalization effects on pay. Over time, we expect you to take on increasingly complex projects as you develop expertise in our compensation practices. Additional responsibilities of this role may include: - Building and maintaining compensation models in Google Sheets, including complex formulas and data manipulation - Analyzing candidate long-term incentive structures, such as RSU vesting schedules and buyout valuations - Speaking directly with candidates to explain our compensation philosophy and walk through offers - Supporting our annual compensation planning cycles and related operational processes - Collaborating across HR functions, including Recruiting, HR business partners, HR Operations, and Mobility and Immigration - Getting comfortable with our internal tools, with the potential to eventually learn some light coding About You - Have 2-5 years of compensation-specific experience, or a mix of compensation and related HR roles (e.g., operations, analytics, HRBP) - Compensation consulting experience is a plus, but

Fixed Asset Accountant New York, New York, United States About the Position We're looking for a Fixed Asset Accountant to join our Accounting team. In this role, you will assist in the design, implementation, and oversight of our financial accounting and reporting for all costs and accounting matters related to fixed assets and leasing arrangements. You'll also analyze relevant accounting literature as needed, and work closely with other teams across the firm to streamline processes and support better strategic decision-making. Additional responsibilities of the role will include: - Owning the end-to-end global financial accounting and reporting for fixed asset costs, ensuring accurate capitalization, classification, and useful life determinations - Partnering with our Accounting Policy team to assess infrastructure expenditures for proper classification as capital expenditures or capital leases under ASC 842, ensuring compliance with financial reporting requirements - Managing our global accounting for fixed assets, including depreciation schedules, impairment assessments under ASC 360, and asset lifecycle tracking - Ensuring timely month-end and quarter-end accounting for all related transactions - Driving improvements in data quality by working with stakeholders to solve problems with big data and complex cost allocation methodologies - Partnering closely with our Financial Reporting and Procurement teams to drive analysis and build financial models that inform decisions around capacity planning, efficiency initiatives, and cost optimization - Assisting in the development of scalable processes and automated solutions to support rapid growth while maintaining strong controls and data integrity - Collaborating with our Procurement and other infrastructure teams to understand

Immigration and Mobility Specialist New York, New York, United States About the Position We're looking for an experienced Immigration and Mobility Specialist to help manage our global immigration and international relocation programs. As a trusted subject matter expert, you'll help our employees, candidates, managers, and HR partners navigate the complexities of employees' immigration and international relocation journeys with clarity, responsiveness, and sound judgment. We believe strong cross-functional partnerships are essential to great immigration work. You'll collaborate closely with our Recruiting, Payroll, and Tax teams, HR partners, employment lawyers, and external immigration counsel to deliver a seamless experience for our global workforce. Additional responsibilities of this role will include: - Partnering with external immigration counsel to support the full lifecycle of employees' immigration journeys with accuracy and efficiency - Serving as a point of contact for employees and candidates on immigration matters, providing clear guidance and timely updates - Maintaining a high standard of immigration compliance by tracking visa expirations, work authorization status, and key deadlines, while adapting to evolving rules and regulations - Advising on mobility policies and coordinating international relocation with external relocation management companies - Partnering with the team to analyze immigration data and trends to inform strategic planning, and identifying opportunities to streamline processes and enhance the employee experience - Collaborating with Recruiting to advise on visa sponsorship considerations during the hiring process - Contributing to internal immigration resources, process documentation, and employee communications About You - Have 3+ years of experience in corporate immigration, global mobility,

Software Engineer Hong Kong, Hong Kong About the Program Our goal is to give you a real sense of what it's like to work at Jane Street full time. Over the course of your internship, you will explore ways to approach and solve exciting problems within your field of interest through fun and challenging classes, interactive sessions, and group discussions - and then you will have the chance to put those lessons to practical use. As an intern, you are paired with full-time employees who act as mentors, collaborating with you on real-world projects we actually need done. When you're not working on your project, you will have plenty of time to use our office amenities, physical and virtual educational resources, attend guest speakers and social events, and engage with the parts of our work that excite you the most. If you've never thought about a career in finance, you're in good company. Many of us were in the same position before working here. If you have a curious mind, a collaborative spirit, and a passion for solving interesting problems, we have a feeling you'll fit right in. About the Position As a Software Engineering intern, you'll learn how we use OCaml (our primary development language) in our day to day work, and gain exposure to the libraries and tools that are foundational to our internal systems. Some teams also use Python, so depending on the project, you might do some work with Python as well. During the internship, you'll

Linux Engineer Hong Kong, Hong Kong About the Program Our goal is to give you a real sense of what it's like to work at Jane Street full time. Over the course of your internship, you will explore ways to approach and solve exciting problems within your field of interest through fun and challenging classes, interactive sessions, and group discussions - and then you will have the chance to put those lessons to practical use. As an intern, you are paired with full-time employees who act as mentors, collaborating with you on real-world projects we actually need done. When you're not working on your project, you will have plenty of time to use our office amenities, physical and virtual educational resources, attend guest speakers and social events, and engage with the parts of our work that excite you the most. If you've never thought about a career in finance, you're in good company. Many of us were in the same position before working here. If you have a curious mind, a collaborative spirit, and a passion for solving interesting problems, we have a feeling you'll fit right in. About the Position As a Linux Engineering intern, you'll work side by side with full-timers to learn how we maintain and improve the critical infrastructure underlying our firm's technology, including our production trading systems. On any given day, we might be debugging kernel performance, developing management tools, or resolving production issues in real time. Our mix of in-house and open source software

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IT Security Engineer New York, New York, United States About the Position We are looking for an IT Security Engineer with a strong Windows engineering background and practical exposure to modern platform security controls to join a global team dedicated to securing Jane Street's IT platforms. In this role, you will help secure our internal IT and remote working platforms through a combination of hands-on technical work, consultancy, and security influence to the wider IT team. The ideal candidate will demonstrate strong judgment and discerning taste in prioritizing potentially complex and extensive remediation efforts. We'll lean on you to suggest where to focus our mitigation efforts, and to provide both technical advice and decision making on behalf of the group where needed. This role will encompass a range of responsibilities, including: - Proactively proposing, designing, testing, implementing, and documenting strategic security controls - Coordinating and delivering security solutions across our IT platforms while identifying opportunities to further automate intelligent workflows - Building security controls that scale, investigating emerging threats, developing new security tooling, and driving vulnerability management initiatives This position sits within our IT Engineering group, a highly dedicated team of engineers who monitor and manage our environment across a physical/virtual computing landscape spanning three continents. Your analytical thinking and expertise will be invaluable as we support the daily work of our colleagues and keep our systems operating at the highest standard. About You - Proficient in securing Windows OS platforms and resolving complex technical issues in a fast-moving environment

Personal Accounts Trading Analyst New York, New York, United States About the Position We are looking for a Personal Accounts Trading Analyst to join our growing Legal & Compliance team and act as a point of contact in administering various employee compliance requirements. You'll work alongside seasoned colleagues, learning to manage the many moving pieces that keep our systems and processes running smoothly. The regulatory landscape within our industry is complex and evolving. In this role, you'll be responsible for the day-to-day operations of our personal accounts, outside business activities, private securities transactions, and gifts areas of the employee compliance program, including tasks such as statement reviews and transaction exceptions. While you'll be based in New York, you'll also be involved in employee compliance workflows for our London and Hong Kong offices, collaborating with colleagues across regions to ensure consistent global standards. The right person for this role will enjoy working with both paperwork and people, and be able to answer questions and explain policies clearly to a wide range of colleagues across the firm. About You - Have a bachelor's degree and 2+ years of corporate experience (compliance experience with Personal Accounts is a plus, but not required) - Professional and trustworthy; you show excellent judgment with sensitive information - A strong communicator with great people skills - A motivated self-starter who can handle competing priorities and work effectively in a challenging, fast-paced environment - Organized with excellent attention to detail - A reliable, courteous, and flexible team player

Commodities Trader New York, New York, United States About the Position We are looking for a commodity trader based in New York to work closely with our local and global commodities teams and help manage our commodity delta one and options book with an emphasis on larger, longer tenor trades. In this role you'll have responsibility for running our systematic and more discretionary strategies, whilst looking for opportunities to grow them. A strong candidate will have an interest in the whole lifecycle of a trade from understanding the signal and idea generation, through trade execution and then book and risk management. Partnering with sell-side counterparts for risk lay-off is a core business for the team, and we are looking for someone who can manage these relationships strategically. Commodity trading interfaces closely with our broader commodities and derivatives operations. We have a culture of strong collaboration both across teams and across regions. Your working relationships, trader intuition, and ability to analyze special situations will add value to our team. About You - 3+ years of experience in commodity trading options (gas, power or oil preferred) - Familiarity with the inter-dealer broker market and transacting bilaterally - Able to think critically and implement new ideas - Understanding of commodity market structure and sources of natural order flow in the market - Strong quantitative skills in understanding options pricing and risk management - Open to learning new techniques - Strong communicator with excellent planning, analytical, and people skills; comfortable coordinating across time zones

Programming Language Engineer New York, New York, United States About the Position We're looking to hire an experienced Software Engineer with a background working on programming languages to join us. Jane Street's OCaml Language team focuses on improving OCaml as a foundation for our ever-growing technology stack, in collaboration with the greater OCaml community. We work on many different aspects of the language, aiming to make it easier for developers to express their ideas in OCaml, to improve the performance of the generated code, and to make the OCaml compiler itself faster and easier to use. Over the years, we've extended the type system with support for novel language features, re-engineered the optimizer ground-up, and added feedback-directed optimization. We also extend and enhance the surrounding toolchain, working on tools for profiling, debugging and generating documentation. The vast majority of our work is open-source, and we upstream as much as we can to the mainstream OCaml compiler. About You For this specialized role within the OCaml Language team, we are seeking candidates with multiple years of experience in practical language design and implementation in an industrial-strength implementation. Research experience and publications in programming languages is a plus, but not a requirement. No previous experience with OCaml or functional programming languages is required. If you're a recruiting agency and want to partner with us, please reach out to [email protected] .

Network Analyst London, England, United Kingdom About the Position We are looking for a Network Analyst who can provide support as our team builds automation and DevOps-driven solutions - encouraging creativity in leveraging AI wherever possible. Our global network infrastructure underpins a variety of traffic profiles, from fast-paced trading to broader internet connectivity. You'll partner with our senior engineers and developers across the firm to enhance existing workflows, streamline processes and ensure that our network remains stable, secure and adaptable. We seek candidates who enjoy solving complex problems and want to develop expertise in both operations and creative infrastructure engineering. A typical day in this role includes: - Providing hands-on support to diagnose and resolve network issues across LAN, WAN and colocation environments - Working with project managers on site expansions, new market data feeds and connections to third-party services - Maintaining and improving our monitoring and alert systems, with a strong emphasis on automation, AI integration and DevOps practices - Using scripting or development tools to reduce manual tasks, enhance network visibility and explore innovative AI-driven solutions This position is an exciting chance to be directly mentored by experienced network engineers with cutting-edge hardware, protocols and DevOps tools. Your daily support will have a direct impact on our operational excellence and your contributions to automation, AI integration and tooling will define the future of our network. About You - Experienced with operating and troubleshooting LAN/WAN networks - Familiar with common routing and switching protocols (e.g., OSPF, BGP, PIM-SM) -

Statistical Arbitrage Research Analyst New York, New York, United States About the Position We are looking for a Statistical Arbitrage Research Analyst who is excited to apply rigorous math and statistical methods to analyze a variety of input datasets to create novel alpha-focused trading strategies for Jane Street. Your work has the potential to span across any and all liquid asset classes, including, but not limited to, U.S. and global equities, equity and fixed income futures, FX, and corporate bonds. Ideally, you will have previous experience working in a buy-side or sell-side financial firm with some combination of asset price returns data, non-returns-based traditional data, and “alternative” data sets. However, if you are an economist or data scientist in a different field (such as tech) we're open to teaching you what you need to know to thrive in this role. We are looking for someone who is eager to dig deep into the details of data sets to assess quality and consider outliers, dimensionality, feature engineering, causality, aligning dates across datasets, and more. You'll help us stay vigilant in our efforts to find and correct errors or mistakes in code, which inevitably happen - though we expect this role to involve as much time delving into the lovely messiness and complexity of data as it will on advanced statistical modeling. The problems we work on rarely have clean, definitive answers, and they often require insights from people across the firm with different areas of expertise. We find that we make

Machine Learning Engineer London, England, United Kingdom We are looking for an engineer with robust experience in machine learning and strong mathematical foundations to join our growing ML team and to help drive the direction of our ML platform. Machine learning is a critical pillar of Jane Street's global business. Our ever-evolving trading environment serves as a unique, rapid-feedback platform for ML experimentation, allowing us to incorporate new ideas with relatively little friction. Our ML team is full of people with a shared love for the craft of software engineering, and for designing APIs and systems that are delightful to use. We'll rely on your in-depth knowledge of the ML ecosystem and understanding of varying approaches - whether it's neural networks, random forests, gradient-boosted trees or sophisticated ensemble methods - to aid decision-making so we apply the right tool for the problem at hand. Your work will also focus on enhancing research workflows to tighten our feedback cycles. Successful ML engineers will be able to understand the mechanics behind various modelling techniques, while also being able to break down the mathematics behind them. If you've never thought about a career in finance, you're in good company. Many of us were in the same position before working here. While there isn't a fixed list of qualifications we're looking for, if you have a curious mind and a passion for solving interesting problems, we have a feeling you'll fit right in. We're looking for someone with: - Experience building and maintaining training