Linux Engineer at Jane Street | New York

Join Point72 as a Linux Security Lead, where you will spearhead our efforts to enhance the security posture of our Linux systems. In this pivotal role, you will collaborate with cross-functional teams to implement robust security measures, conduct risk assessments, and ensure compliance with industry standards. Your expertise will help safeguard our infrastructure and data integrity.

As a Business Analyst at Point72, you will play a pivotal role in driving informed decision-making through data analysis and strategic insights. You will collaborate closely with various teams to leverage data, enhance operational efficiency, and support our investment strategies.You will have the opportunity to work in a fast-paced, dynamic environment where your analytical skills will be essential in identifying trends, generating reports, and presenting findings to stakeholders.

Join Point72's dynamic team as a 2026 Intern in Transportation Strategy, where you'll have the opportunity to engage in innovative projects that impact urban mobility and transportation planning. This internship will provide you with hands-on experience in analyzing transportation strategies and developing solutions that address real-world challenges in metropolitan areas.

About the Fundamental Research Fellowship Point72 Asset Management, L.P. offers a Fundamental Research Fellowship based in New York, NY. Fellows work alongside seasoned investment professionals and contribute to research that supports investment decisions. What You Will Do Collaborate with experienced team members on research projects Apply analytical skills to assess investment opportunities Gain exposure to the processes and tools used in professional investment research This fellowship provides hands-on experience in the field of investment research within a leading asset management firm.

The Mission Control Specialist at Point72 works at the heart of trading operations, keeping critical systems running smoothly. This position monitors trading platforms, responds to incidents, and coordinates with different teams to keep processes on track. Role overview This role focuses on supporting the daily operation of trading systems. Quick responses to incidents and clear communication help prevent disruptions to trading activities. Analytical thinking and careful attention to detail are key in spotting and resolving issues early. Key responsibilities Monitor trading platforms for performance and stability Respond to incidents affecting trading systems Facilitate communication between teams to resolve operational issues Identify and address potential problems before they impact trading Requirements Strong analytical skills Attention to detail Ability to work collaboratively across teams Experience supporting technical systems is helpful

As a Learning & Development Analyst at Point72, you will play a pivotal role in enhancing the skills and competencies of our employees. You will collaborate with various teams to identify training needs, develop educational materials, and implement effective training programs. Your insights will empower our workforce to reach their full potential in a dynamic and innovative environment.

Join Fluidstack as a Security Lead for Data CentersAt Fluidstack, we are pioneering the infrastructure for abundant intelligence. Collaborating with prestigious AI laboratories, governmental bodies, and leading enterprises such as Mistral, Poolside, and Meta, we aim to deliver computing capabilities at extraordinary speeds.Our mission is to make Artificial General Intelligence (AGI) a reality, and we are committed to creating world-class infrastructure. We prioritize our customers' success and take pride in the systems we develop and the trust we cultivate. If you are driven by a strong sense of purpose, passionate about excellence, and eager to work diligently to shape the future of intelligence, we invite you to be a part of our journey.Role SummaryAs the Security Lead for Data Centers, you will be at the forefront of designing and implementing robust physical and logical security frameworks across our distributed data center network. Your responsibilities will encompass setting security standards for facility developments, spearheading the design and implementation of secure network infrastructure, managing vendor and contractor security protocols, and ensuring adherence to regulatory and customer requirements. This role will involve collaboration with engineering, construction, and operations teams to integrate security throughout every layer of Fluidstack's GPU cloud infrastructure, safeguarding our AI infrastructure from advanced threats.Key ResponsibilitiesDevelop security processes and policies that evolve with Fluidstack's rapid infrastructure expansion.Lead network security engineering initiatives, providing both consultative and implementation support to infrastructure teams.Design and uphold comprehensive security frameworks across Fluidstack's distributed infrastructure.Assist in the development and enforcement of security system standards compliant with US DoD and international standards.Guide cross-functional data center architecture and operations, focusing on infrastructure, operations, and support.Foster strategic alignment across various security functions that integrate into all aspects of data center operations.Who You Are10+ years of experience in designing and implementing security systems for hyperscale or mission-critical environments.In-depth understanding of the threat landscape at the convergence of IT and OT.Proven experience in leading cross-functional teams and initiatives.

Lead Bank builds modern banking infrastructure for embedded financial products and services. With headquarters in Kansas City and offices in San Francisco, Sunnyvale, and New York City, the team combines technology, product, design, and legal expertise to help shape the future of finance. The company operates at the intersection of technology and regulation, supporting fintech partners as they grow while remaining compliant and innovative. Technical depth in banking and payments systems, automated compliance, transparency, and operational integrity are core values at Lead Bank. Role overview The Senior Security Analyst joins the Security Operations team in New York on a hybrid schedule. This position focuses on strengthening detection and response capabilities across the organization. Work includes building detections, triaging alerts, responding to incidents, and proactively hunting threats in cloud infrastructure, security tools, and data pipelines. Mentoring junior analysts and collaborating with leadership to improve the security posture are also key parts of the role. Deep understanding of the regulatory landscape and experience defending against advanced persistent threats are important for success in this position. Key responsibilities Develop, tune, and maintain detection rules and alerts in the SIEM. Build queries to identify threats and coverage gaps using the MITRE ATT&CK framework. Lead incident response from start to finish, including containment, eradication, recovery, forensic log analysis, documenting lessons learned, and post-incident reporting. Monitor and investigate security events across endpoints, AWS cloud, identity, and network telemetry to detect misconfigurations, anomalous activities, and suspicious behaviors. Support security audits and regulatory examinations by providing timely and accurate security documentation and evidence.

Join Trexquant as a dedicated Linux Systems Engineer, where you will play a pivotal role in constructing, managing, and scaling our on-premise infrastructure. This hands-on position emphasizes bare-metal Linux systems and offers significant ownership of server provisioning, storage management, and overall system reliability.The ideal candidate will be meticulous, highly disciplined, and adept at thriving in a challenging, production-critical environment. This role is specifically tailored for individuals with extensive experience in physical infrastructure, Linux internals, and automation within a high-performance context.Key Responsibilities:Construct, provision, and manage bare-metal Linux servers, overseeing OS installation, configuration, and lifecycle management.Take full ownership of server infrastructure from hardware through to the operating system and core services, ensuring optimal stability and performance.Configure and manage storage systems, including ZFS and enterprise storage platforms (e.g., NetApp, Dell, or similar).Monitor system health and performance, troubleshoot issues, and implement sustainable long-term solutions.Develop and maintain automation scripts using Ansible and Bash to standardize provisioning, configuration, and operational procedures.Conduct system patching, upgrades, and capacity planning across an expanding server fleet.Engage in incident response and root cause analysis, focusing on the continuous improvement of system reliability.Collaborate with engineering and infrastructure teams to optimize application performance on Linux systems.Contribute to documentation, runbooks, and operational best practices.Support data center operations as required, including hardware troubleshooting, racking, cabling, and server replacements.Occasionally travel to data centers for maintenance, expansions, and problem resolution.

Join Copia as a Lead Security Engineer, where you will play a pivotal role in safeguarding our digital assets and infrastructure. You will lead a team of talented engineers, implementing cutting-edge security measures and developing innovative solutions to protect our organization from cyber threats.In this role, you will be responsible for conducting security assessments, developing security protocols, and ensuring compliance with industry regulations. Your expertise will be crucial in identifying vulnerabilities and enhancing our security posture to mitigate risks effectively.

About the PositionAs a Linux Engineer at Jane Street, you will play a pivotal role in managing the essential infrastructure that supports our entire technology landscape. This dynamic group comprises dedicated Systems Engineers, Administrators, and Programmers focused on enhancing and maintaining the platform that drives Jane Street's production trading systems. Our blend of proprietary and open-source software empowers you to explore and innovate at every level. Whether you're debugging kernel performance, crafting management tools, or swiftly addressing production issues, tackling complex systems challenges is our forte.We prioritize deployment automation, scalable configuration management, and meticulous monitoring as part of our ongoing projects. While we automate extensively, it's not merely for convenience; we believe automation minimizes errors and reduces workload—plus, we find it enjoyable!Being part of our team opens avenues to collaborate with nearly every department within the company. You will engage directly with colleagues in Trading, Technology, and Operations to develop and sustain systems with a firm-wide impact. By leveraging feedback from various teams and our custom monitoring tools, we aim to quickly resolve production challenges, conduct thorough root-cause analyses, and implement long-term solutions in a clean and effective manner.About YouWe seek talented Systems Programmers and Administrators with robust expertise in Unix internals and the Linux ecosystem. Ideal candidates will have a willingness to learn OCaml, our preferred programming language, and should meet the following qualifications:Bachelor's degree in Computer Science, Software Engineering, or a related technical field (or equivalent experience)Excellent communication skills coupled with the ability to analyze and dissect technical problems efficientlyComprehensive understanding of operating system fundamentals, particularly LinuxProficiency with the Unix command line and shell scriptingHands-on experience with modern Linux systems and systems programming concepts, including C, sockets, virtual memory, and process lifecycleBasic knowledge of network protocolsStrong troubleshooting abilities and familiarity with profiling/debugging tools such as gdb, perf, DTrace, eBPF, or SystemTapProgramming experience in any language (functional languages are a plus)

About Method SecurityAt Method Security, we are at the forefront of transforming cybersecurity to combat the escalating threats posed by artificial intelligence. Our mission is to safeguard vital sectors—spanning government, defense, and key commercial industries—against these advanced challenges by developing innovative, autonomous defense solutions. We unite our expertise in AI, cybersecurity, and software engineering to create cutting-edge products that aim to shift the balance of power from attackers to defenders.Our Culture and ValuesBy joining Method, you become a part of an elite, purpose-driven team that champions innovation, transparency, and exceptional quality. We are dedicated to fostering an inclusive environment that embraces diverse perspectives while maintaining rigorous standards. Our team operates on the principles of trust, efficiency, and respect, enabling everyone to make meaningful contributions. At Method, you will be empowered to advance projects independently, receive the support needed to overcome challenges, and play a pivotal role in redefining the future of cybersecurity.Role OverviewAs the Deployment Lead at Method, you will oversee customer engagements with some of the most crucial security teams globally. Your primary focus will be to ensure that our clients maximize their success with the Method platform by serving as the key liaison for managing tactical customer relationships. This multifaceted role encompasses account management, business development, technical analysis, product enhancement opportunities, and user support. We are looking for a versatile, proactive individual who is passionate about revolutionizing cybersecurity. At Method Security, we often deploy our Engineering team directly to client sites, and in this role, you will be instrumental in identifying product value, customer prospects, and business improvements.You may currently be associated with a top-tier consulting firm or managing an operational function within a technology company and are eager to engage with a critical mission while leveraging your analytical skills. You will collaborate closely with a technical counterpart in the Mission Operations Engineer role, who is responsible for delivering, administering, and extending the Method platform.Key ResponsibilitiesEngage with customer stakeholders, ranging from analysts to executives, to ensure Method's solutions are effectively integrated and addressing critical challenges.Oversee deployment projects to facilitate a seamless adoption of the Method platform within client organizations.

About the RoleJoin Zip Security as a Founding Product Lead, becoming a pivotal force in shaping our product vision and operational execution. In this influential role, you will oversee crucial product areas from inception to delivery, focusing on resolving customer challenges and streamlining intricate security and IT processes.Collaborate closely with Engineering, Design, and Go-To-Market teams to devise product strategies, facilitate execution, and implement robust product practices as we expand. This role suits a seasoned product manager who excels in uncertain environments, embraces complete ownership, and is passionate about establishing the product function from the ground up.This is a hybrid position, offering flexibility to work in our New York City or Washington, DC offices.Your ResponsibilitiesSteer product strategy and execution for essential components of the Zip Security platform as one of the initial product leaders.Initiate product discovery — pinpointing customer pain points, validating solutions, and shaping the product roadmap in collaboration with Engineering and Design.Convert customer requirements, business objectives, and technical limitations into clear product specifications and priorities.Establish and refine product processes and best practices as the organization grows.Compose precise product specifications that align teams and drive effective execution.Manage prioritization and trade-offs across features, technical investments, and new initiatives.Collaborate with Sales, Customer Success, and Marketing to integrate customer feedback and guarantee successful product launches and adoption.Utilize product metrics to evaluate success, iterating swiftly based on outcomes.Serve as a strong internal advocate for product impact, emphasizing customer value and long-term vision.Qualifications5–8+ years of product management experience with ownership of products or significant product areas.Experience in fast-paced or early-stage environments, with a knack for building structure in undefined settings.Comfortable navigating ambiguity and making informed decisions in the absence of complete information.Strong communication skills with a passion for customer-centric product development.

Join Coast as a Security Engineer, where you'll play a critical role in safeguarding our digital infrastructure and data integrity. You will collaborate with our engineering teams to design and implement security measures, assess risks, and respond to security incidents. Your expertise will help us ensure that our systems are robust and secure against emerging threats.

Join our dynamic team at Artemis as a Security Analyst in the heart of New York City. In this pivotal role, you will be tasked with identifying, analyzing, and mitigating security threats to our organization. You will collaborate with IT and business units to develop security policies, procedures, and best practices to ensure the safety of our data and systems.

At Momenti, we are pioneering a new era of content creation, transforming traditional media into immersive experiences that resonate deeply with audiences. Our focus is on interactive video that dismantles the 4th wall, fostering profound connections and emotions. Join us in redefining audience engagement and bringing moments to life in an innovative way.Job Overview:We are looking for a skilled and dedicated Security Engineer to become our inaugural security hire at Momenti, reporting directly to our Engineering Director. In this influential role, you will be charged with safeguarding the security and integrity of our systems, applications, and data. You will collaborate closely with cross-functional teams to identify vulnerabilities, formulate and implement security protocols, and provide continuous support to ensure a secure environment. This role offers a unique opportunity to make a lasting impact and help shape the security framework at Momenti.Key Responsibilities:• Design and implement robust security strategies, policies, and procedures to protect Momenti's technological assets.• Conduct ongoing security evaluations, vulnerability assessments, and risk analyses to uncover and mitigate potential security threats.• Work alongside software engineers and other team members to establish secure coding standards and practices to ensure secure software development.• Actively monitor and respond to security incidents, investigating and resolving breaches, intrusions, and unauthorized access attempts.• Keep abreast of the latest developments in security technologies, trends, and best practices, and provide actionable recommendations to enhance our security posture.• Conduct training sessions for employees to foster a culture of security awareness and best practices within the organization.

At profound, we are dedicated to empowering organizations with the insights and control they need over their AI presence. We are seeking a proactive Security Engineer to spearhead the security framework of our platform, infrastructure, and corporate environment. You will collaborate closely with our Engineering and Operations teams to establish and uphold security controls, compliance procedures, and threat mitigation strategies that safeguard customer data while facilitating our rapid expansion.This position is perfectly suited for an individual who perceives security as a catalyst for business growth, rather than an impediment, and who is passionate about constructing practical, scalable security systems from the ground up. As our inaugural dedicated security hire, you will play a pivotal role in shaping our strategies for access control, vulnerability management, compliance, and incident response as we grow.

About Method SecurityAt Method Security, we are on a mission to redefine the landscape of cybersecurity in response to the rapid evolution of AI-driven threats. Our commitment lies in protecting essential institutions—ranging from government and defense to critical commercial sectors—against these advanced threats through the development of state-of-the-art, autonomous defense solutions. By integrating our expertise in AI, cybersecurity, and software engineering, we aim to shift the balance of power in security from the attackers to the defenders.Our Team and ValuesWhen you join Method, you become part of a distinguished, mission-oriented team that champions innovation, transparency, and excellence. We operate with intention, embracing a myriad of perspectives and experiences while upholding rigorous quality standards. Our culture is founded on trust, efficiency, and respect, fostering an environment where everyone can make significant contributions. We believe in the power of small, agile teams that can tackle complex challenges and yield remarkable results. At Method, you will have the freedom to lead projects, receive the support to overcome obstacles, and play a pivotal role in shaping the future of cybersecurity.Role OverviewAs a Security Engineer at Method Security, you will play a vital role in enhancing our product's capabilities by crafting tools and workflows that bolster the AI-driven defenses of our platform. This position demands a unique combination of security engineering expertise and software development skills to transform intricate security workflows into solutions that our product can autonomously utilize. You will collaborate closely with developers and product teams to ensure that the tools and security primitives within our offering empower users to address a variety of dynamic cybersecurity challenges.Key ResponsibilitiesDevelop and fortify both defensive and offensive security tools and workflows that augment the efficacy of our AI-driven platform.Create automated solutions within our product to optimize security workflows and facilitate intelligent responses to identified vulnerabilities and misconfigurations, utilizing Python and Go.Construct and maintain infrastructure utilizing Terraform and virtualization software for continuous testing and simulation.Engage with cross-functional teams to integrate security capabilities that align with user requirements and uphold high operational standards.Explore and implement diverse security tools and develop integration points within our product to support comprehensive security strategies.

About the Position Join our global team at Jane Street as an IT Security Engineer, where your extensive Windows engineering expertise and hands-on experience with contemporary security controls will play a pivotal role in safeguarding our IT platforms. You will be instrumental in enhancing the security of our internal IT and remote work environments through a blend of technical execution, consultation, and strategic influence across the IT team. We seek a candidate who possesses exceptional judgment and an eye for prioritizing intricate remediation efforts. Your insights will guide our mitigation strategies, while you provide essential technical counsel and decision-making support as required. Your responsibilities will include: Proactively proposing, designing, testing, implementing, and documenting advanced security controls. Coordinating and delivering security solutions across our IT platforms, while identifying opportunities for further automation of intelligent workflows. Developing scalable security controls, investigating emerging threats, creating new security tools, and spearheading vulnerability management initiatives. This role is part of our dedicated IT Engineering team, which monitors and manages our computing environment across three continents. Your analytical skills and expertise will be critical in supporting our colleagues' daily operations and ensuring our systems are maintained to the highest standards.