Lead Infrastructure Engineer

Role overview Trexquant is looking for a Linux Systems Engineer to support and enhance its on-premise infrastructure in New York. The position involves direct, hands-on work with bare-metal Linux servers. Daily tasks include provisioning new hardware, managing storage resources, and working to keep systems reliable and efficient in a production environment. …

Join the City of New York as a Lead Unix/Linux Systems Engineer, where you will play a pivotal role in managing and optimizing our Unix/Linux environments. You will collaborate with cross-functional teams to implement robust solutions that enhance system performance and security. Be part of a dynamic organization that values innovation and excellence.

About the PositionWe are in search of a dynamic leader to guide our expanding team of Linux Engineers at Jane Street.This team, comprising both managers and individual contributors, consists of dedicated Systems Engineers, Administrators, and Programmers who are responsible for maintaining and enhancing the platform that drives Jane Street's production trading systems. (Learn more about the Linux Engineer role here.)We expect our managers to lead by example. While supporting their teams, the ideal candidate will be eager to begin as an individual contributor, develop a solid grasp of Jane Street's technical landscape, and evolve into a managerial role.We value individuals who resonate with our core principles: honesty, collaboration, intellectual curiosity, humility, and a quantitative approach to decision-making and problem-solving. To excel in this role, candidates should be Linux Engineers at heart, with experience in various areas including people management, project and program management, large-scale coordination, partnership facilitation, strategic planning, and service delivery.About YouWe are looking for a Linux Engineering Manager who possesses a robust technical background and substantial leadership experience. Candidates should lead by example, balancing their individual technical contributions with their leadership responsibilities. A willingness to learn OCaml, our programming language of choice, is essential. Candidates should meet the following qualifications:Bachelor's degree in Computer Science, Software Engineering, or a related technical field (or equivalent experience)Exceptional communication skills, capable of engaging in one-on-one meetings as well as larger group discussions, with the ability to analyze and deconstruct complex problems efficientlyA proven track record of supporting individuals and fostering team growthExperience in building and nurturing cross-company partnershipsStrong analytical and troubleshooting abilities across various dimensions (technical, process, interpersonal, etc.)In-depth understanding of operating system fundamentals, particularly LinuxProficiency with the Unix command line and shell scriptingHands-on experience with modern Linux systems and systems programming conceptsBasic understanding of network protocolsProgramming experience in any language

About Five RingsFive Rings is an innovative proprietary trading firm that merges strategy, technology, and creativity to excel in the global markets. With a presence in major cities such as New York, Boca Raton, London, and Amsterdam, Five Rings engages in diverse domestic and international trading activities. Our team is dedicated to discovering new opportunities, assessing their risks and rewards, and developing strategies and tools to leverage them.We foster an open culture that promotes the exchange of knowledge and ideas across all levels of the organization.About the RoleWe are looking for a skilled Linux Systems Administrator to join our expanding systems administration team. In this hands-on role, you will be responsible for managing the workstations and servers that support our trading operations. This includes performing systems work on both desktops and in our data centers, while collaborating with users throughout the organization.As a Linux-focused environment, our operations primarily utilize Linux servers and desktops, with minimal use of Windows servers and desktops as required.

About the Position Join our dedicated team of Linux Engineers at Jane Street, where you will be instrumental in maintaining the vital infrastructure that supports our cutting-edge technology. Our team comprises skilled Systems Engineers, Administrators, and Programmers focusing on enhancing the platform that drives Jane Street's production trading systems. With a blend of proprietary and open-source software, you will have the opportunity to explore and innovate at every level. Your day-to-day activities might include debugging kernel performance, developing management tools, or addressing production issues on the fly. Solving complex systems challenges is our forte. We emphasize deployment automation, scalable configuration management, and meticulous monitoring in our ongoing projects. While we automate as much as possible, it's not out of laziness; rather, we believe that automation minimizes errors and lightens our workload—plus, we find it enjoyable. Working within our team provides a unique opportunity to collaborate with various departments across the company. You will work closely with teams in trading, technology, and operations to develop and sustain systems that have a firm-wide impact. By leveraging feedback from other groups and utilizing our custom monitoring tools, we aim to resolve production issues swiftly, conduct thorough root-cause analyses, and implement long-term solutions in a clean and efficient manner. We don't require you to have extensive experience; we are eager to hire intelligent problem solvers and guide them through their learning journey. You will train alongside seasoned team members in a hands-on environment, acquiring the skills necessary to make significant improvements to our infrastructure daily.

Hudson River Trading is hiring a Junior Trading Systems Engineer to join its Trading Systems Infrastructure team. This group is responsible for designing, building, and maintaining the high-performance infrastructure that supports the firm's global trading operations. The focus is on ensuring reliability and efficiency for ultra low-latency operating systems, automation tools, and platforms that keep trading strategies running around the clock. Key responsibilities Contribute to projects within a real-time trading environment Address challenges that demand high availability, high throughput, and ultra low-latency solutions Support the maintenance and improvement of core infrastructure for global trading systems Assist in developing and automating tools that back trading operations What we look for Strong interest in coding and automation Willingness to learn new skills and technologies to work with a complex technical stack Ability to solve technical problems in a demanding setting Locations Chicago, Illinois, United States London, United Kingdom New York, NY, United States

Join Neota Logic, a pioneering no-code automation platform that empowers insurance, compliance, and legal professionals to effortlessly build and deploy workflow automation solutions without any coding experience. Our platform is trusted by leading corporations, law firms, and educational institutions across the globe.As a DevOps Engineer, you will play a critical role in maintaining and enhancing our secure, high-performance cloud infrastructure on AWS and Microsoft Azure. Your expertise will ensure system reliability and performance, while you support development teams in troubleshooting production issues and manage our internal deployment tools built with Django. Additionally, you will oversee backups, databases, and source control systems such as Git, all while upholding strong security practices and maintaining clear documentation of architecture and networks.

ElectronX™ is a U.S.-regulated marketplace focused on direct access to electricity derivatives. Headquartered in New York City, with an office in Chicago, the company builds financial infrastructure and risk management tools for the U.S. energy sector. ElectronX is backed by venture capital partners including Innovation Endeavors, Systemiq Capital, Equinor Ventures, Shell Ventures LLC, DCVC, Amplo, BoxGroup, and Lightning Capital. ElectronX operates in the competitive world of quantitative capital markets. The team values resourcefulness, curiosity, and adaptability. Collaboration and entrepreneurial thinking are central to the company’s culture, and team members are expected to demonstrate intellectual resilience and a drive for technical excellence. Role overview The Senior Systems & Infrastructure Engineer will guide and improve the core platforms that power the ElectronX exchange. This position covers cloud infrastructure, containerized environments, observability, security operations, and networking. The engineer will join a lean, high-trust team with significant autonomy and direct impact on production systems. ElectronX seeks candidates who are committed to raising organizational standards. The right person approaches architectural challenges and support requests alike with a positive, solution-focused mindset. Clear communication, reliability, and sharing technical best practices are essential. What you will do Cloud Infrastructure: Design, deploy, and maintain multi-tiered cloud environments using infrastructure-as-code tools such as Terraform and Ansible. Manage container orchestration platforms, overseeing lifecycle management, autoscaling, ingress, persistent storage, and workload isolation. Establish and enforce cloud organization policies, Identity and Access Management (IAM), and key network security measures. Apply FinOps principles to optimize cloud spending and resource allocation.

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 BasisBasis is a pioneering nonprofit organization dedicated to applied AI research, driven by two key objectives.The first objective is to comprehend and develop intelligence. This encompasses establishing the mathematical foundations of reasoning, learning, decision-making, understanding, and explanation, while also creating software that embodies these principles.The second objective is to enhance society’s capacity to tackle complex challenges. This involves broadening the scope, scale, and complexity of problems we can address today, and crucially, accelerating our capacity to solve future problems.To fulfill these missions, we are constructing an innovative technological infrastructure inspired by human reasoning, along with a collaborative organization that prioritizes human values.About the RoleAs an ML Systems Engineer at Basis, you will ensure that our training and evaluation infrastructure is fast, reliable, and scalable. You will manage the entire stack, from distributed training frameworks to cloud administration, enabling researchers to rapidly iterate on complex models while efficiently managing computational resources.We are seeking engineers who possess a profound understanding of ML systems paired with operational excellence. The ideal candidate will have experience in distributed training at scale, expertise in debugging numerical instabilities, and the ability to manage cloud infrastructure that seamlessly transitions from experimentation to production. You will be the steward of training stability, an optimizer of computational costs, and a facilitator of reproducible research.This position encompasses both traditional ML engineering and cloud/DevOps responsibilities. You will oversee GPU clusters, optimize cloud expenditures, ensure security and compliance, and build the infrastructure that allows researchers to focus on algorithms rather than operations.We are looking for individuals who are committed to developing robust ML infrastructure, maintaining a culture of documentation for issues and solutions, and prioritizing operational excellence as a core value.

Hudson River Trading seeks a Trading Systems Engineer to join the Trading Systems Infrastructure team. This group builds and maintains the technology behind global trading operations. Their work supports high performance and reliability for the ultra-low latency operating systems, automation tools, and development platforms that keep trading strategies running worldwide, around the clock. Role overview The Trading Systems Engineer will help support and improve real-time production trading environments. The work centers on solving challenges that require high availability, high throughput, and ultra-low latency. This role contributes to the development and automation of essential infrastructure components, working alongside a team committed to keeping trading systems operating smoothly at all times. What you will do Support and improve real-time production trading environments Address challenges involving high availability, high throughput, and ultra-low latency Contribute to developing and automating critical infrastructure Collaborate with a team focused on system reliability and uptime Requirements Experience with coding and automation Strong interest in enhancing technology stacks Ability to solve complex technical problems in demanding environments Comfort working where uptime and performance are essential Locations Austin, TX, United States Boulder, Colorado, United States Chicago, Illinois, United States London, United Kingdom New York, NY, United States Seattle, Washington, United States

Join our dynamic team at 360itprofessionals1 as a Hadoop Engineer specializing in Unix/Linux environments. In this role, you will leverage your expertise to manage and optimize large-scale data processing systems, ensuring efficiency and reliability.

Location: Hybrid (3 days in office / 2 days remote) – New York, NY About StubHub StubHub helps fans and sellers connect for live events around the world. The company focuses on making every ticket search, purchase, and event entry smooth and secure, whether for a first-time attendee or a seasoned fan. This commitment extends to sellers, from individuals listing a single ticket to promoters managing global tours. Safety and convenience are central to StubHub’s platform, serving millions of users worldwide. Team Overview: Infrastructure The Infrastructure team builds and maintains the technical foundation that supports StubHub’s products and services. This group manages the internal service catalog, core compute platforms, and tools that enable engineers across the company to deliver quickly and reliably. Areas of responsibility include build systems, deployment pipelines, artifact management, infrastructure provisioning, and cloud resource management. The team also leads on service attribution and works closely with other engineering groups to encourage best practices, self-service adoption, and strong operational standards. Role Overview: Engineering Manager - Infrastructure This leadership role involves working with systems that are central to StubHub’s growth and reliability. The position is visible across the organization and has executive support. Responsibilities include collaborating with teams from multiple disciplines, shaping architectural decisions, mentoring engineers, and driving results that make a tangible impact on StubHub’s platform and user experience.

Key Responsibilities:Deliver expert technical support to VFX Artists utilizing Linux workstations.Guide and mentor Technical Engineers, fostering their professional development within the department.Oversee the maintenance of server room and colocation facility equipment in collaboration with Technology Engineers.Design, manage, and troubleshoot network infrastructures, focusing on Layer 2/3 network switches.Maintain and support physical security systems and applications to ensure optimal performance.Install, deploy, and troubleshoot various VFX tools including Flame, Maya, Nuke, and Baselight.Administer and uphold infrastructure that includes Linux render nodes, Isilon storage, Linux servers, workstations, network equipment, and virtual machines.Take ownership of diverse projects involving evaluation, installation, development, and decommissioning, supporting the Technology team.Manage preventative maintenance schedules effectively.Possess knowledge of relevant security technologies and processes, including encryption and authentication methods.Demonstrate understanding of virtualization, containerization, and cloud computing technologies.Upgrade and configure infrastructure systems and software as required.Support and mentor junior team members to enhance their skills.

As an On-Premise Distribution Manager at Red Bull, you will spearhead our distribution strategy within the dynamic New York market. Your role will involve collaborating with various stakeholders to optimize the flow of our iconic products, ensuring that they reach consumers efficiently and effectively. You will be a key player in enhancing our brand presence and driving sales through innovative distribution methods.

About UsAt Percepta, we are dedicated to revolutionizing vital sectors through the power of applied AI. Our goal is to ensure that key industries such as healthcare, manufacturing, and energy harness the benefits of cutting-edge technology.We partner with leading organizations to facilitate AI transformation, providing:Expertise in engineering, product development, and researchMosaic, our proprietary toolkit designed for the swift deployment of intelligent architecturesStrategic alliances with notable entities like Anthropic, McKinsey, AWS, and the General Catalyst portfolioOur team is a dynamic collective of Applied AI Engineers, Embedded Product Managers, and Researchers driven by the mission to integrate advanced AI into the systems that shape our world.Percepta is a proud partner of General Catalyst.Role OverviewWe are on the lookout for an AI Infrastructure Engineer who will be responsible for the infrastructure, deployment, and operational reliability that underpin Percepta's AI systems, including the autonomous agents driving our innovations.Your role will involve enhancing existing systems: refining our Terraform configurations, fortifying deployment pipelines, and implementing more robust management of infrastructure across various regions and providers. You will also be tasked with constructing missing components and exploring uncharted territories, defining what Site Reliability Engineering (SRE) means in the context of autonomous decision-making systems.The infrastructure paradigms for future autonomous systems are yet to be established, and you will play a crucial role in shaping them.What Sets This Role ApartYou will be working with autonomous systems, where the infrastructure dynamics shift significantly when workloads have agency.Observability entails understanding the rationale behind an agent's decisions, not merely checking the health of a pod.There is a tangible gap between research and production in our environment. Our teams transition optimization algorithms and AI systems from research settings to production, and you will be integral to this process. While MLOps experience is not mandatory, you will be closer to this boundary than most infrastructure roles.Join a small team with significant ownership. You will make foundational decisions rather than inherit pre-existing ones.Your ResponsibilitiesDesign infrastructure patterns for multi-agent systems that are observable, controllable, and recoverable in innovative ways.

Join the dynamic team at Red Bull as an On-Premise Specialist in Upper Manhattan! In this exciting role, you will engage with local venues to enhance brand visibility and drive sales through innovative marketing strategies. You will be responsible for building relationships with bar and restaurant staff, ensuring that the Red Bull brand remains top of mind in the competitive beverage market.

About the RoleAt Counsel Health, we have developed an innovative product that has garnered admiration from both patients and physicians, utilizing a fast-paced technology stack. As we continue to grow, the complexity between our application code and infrastructure is expanding. We are seeking a talented individual who thrives in this dynamic intersection.We are in search of a Backend Infrastructure Engineer who embodies both software engineering and infrastructure expertise. This role is not about working in isolation writing Terraform scripts all day or solely delivering product features in React. Instead, you will work within the essential layer that connects our CI/CD pipelines, Infrastructure as Code (IaC) for our AWS environment, backend services, and the developer tools that empower our rapidly expanding engineering team.Your ResponsibilitiesEnhance Our Infrastructure-as-Code: Design and manage our cloud infrastructure utilizing Terraform.Optimize CI/CD Processes: Take ownership of our build, test, and deployment pipelines from start to finish. Aim to make production deployments effortless, speedy, reliable, and automated.Backend Development: Create production-level backend services and contribute to our core server-side systems. You are proficient in writing application code, not just orchestrating it.Create Core Archetypes: Develop production-grade archetypes for new deployments, jobs, consumers, and workers. You are adept at building an abstract base stream consumer or cron executor for widespread application.Enhance Developer Experience: Act as the engineer who accelerates the productivity of other engineers. Streamline local development workflows, decrease build times, resolve flaky infrastructure issues, and create internal tools that the team genuinely values.Security & Compliance: Collaborate closely with our security and compliance team to strengthen our infrastructure security posture, including secrets management, IAM policies, network isolation, and audit logging in a HIPAA-compliant environment.Who You AreA Bridge Builder: You feel at home in an IDE crafting application code as well as in a terminal managing cloud infrastructure. You view backend and infrastructure as intertwined disciplines.An Automation Advocate: If a task is done manually more than twice, you are already scripting it for automation.A Systems Thinker: You comprehend how a request traverses through various systems and how they interact.

About BlacksmithAt Blacksmith, we revolutionize CI workload infrastructure, delivering unparalleled speed and cost-effectiveness through our proprietary fleet of global bare-metal machines, which eliminates the need for generic cloud VMs.We successfully orchestrate tens of millions of Firecracker VMs monthly, supporting over 1,200 companies while achieving approximately $10 million in annual recurring revenue in under two years.Our operations span thousands of bare-metal machines across various regions, managing a petabyte-scale Ceph cluster and consistently scheduling over 30,000 vCPUs concurrently.Backed by $13.5 million in funding from notable investors such as Google Ventures (GV), we are focused on cultivating a small yet exceptional team.Founded by experts with extensive experience in systems and scaling, including roles at Faire and Cockroach Labs, we are expanding our CI infrastructure into a comprehensive platform that includes running agent sandboxes at scale and developing our own background coding agent.