Level 3 Linux Administrator

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

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.

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.

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. What you will do Set up and maintain physical Linux servers Oversee storage systems and uphold data integrity Monitor system health and implement improvements to reliability in production environments Who thrives in this role Approaches system administration with care and discipline Feels comfortable in production-critical situations Brings a strong grasp of Linux internals, automation tools, and high-performance system setups Location This role is based in New York, New York, United States, with a focus on managing on-premise, physical infrastructure.

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.

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)

Are you a passionate Cloud Engineer with expertise in Linux looking to advance your career? Join Collabera, a leading technology solutions provider, where you will be part of a dynamic team dedicated to innovation and excellence. In this role, you will design, deploy, and manage cloud infrastructure while ensuring optimal performance and security.

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.

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.

Role overview Smith Engineering is seeking a Director of Design Engineering to lead its design team in New York City. This leader will oversee the development of engineering solutions that meet client requirements and comply with industry standards. The role involves shaping project direction and supporting the growth of a skilled group of engineers. What you will do Guide and manage the design engineering team Drive the creation of efficient, high-quality engineering designs Ensure all work aligns with client needs and industry standards Mentor and develop engineering talent within the team Influence the direction of engineering projects at Smith Engineering

About the Role Smith Engineering is hiring a Director of Energy Engineering to guide the energy solutions team in New York City. This senior leader will shape project direction and help set the strategy for energy initiatives across our portfolio. What You Will Do Lead a team focused on delivering energy engineering projects Develop and implement strategies that strengthen our energy solutions Oversee project execution and ensure alignment with company goals What We’re Looking For Extensive experience in energy engineering Proven leadership and team management skills Ability to drive strategic initiatives in a technical environment This position is based in New York City.

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

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.

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 AccorHotels as an Engineering Manager and lead a dynamic team of engineers dedicated to delivering exceptional service and innovative solutions. You will be responsible for overseeing engineering projects, ensuring compliance with safety regulations, and fostering a culture of continuous improvement. Your leadership will drive the success of our operations in a fast-paced environment.

At Smith Engineering, we are on a mission to foster a sustainable future through enhanced operations and efficiency in critical facilities. With over a decade of experience in central plant design and optimization, we have built a strong reputation for unraveling facility challenges and optimizing plant performance. Our multidisciplinary team combines expertise in design, energy management, controls, and workforce development to empower our clients to achieve their operational and sustainability objectives.We are currently looking for passionate and knowledgeable Part-Time Technical Trainers to join our dynamic team in the New York Metro area. In this role, you will work from our Manhattan office as well as various client sites, delivering impactful training in renewable energy and Chiller Plant Design.Your RoleAs a key member of our Training Group, you will contribute to building a top-tier technical training organization. We seek individuals who possess credible technical expertise and a knack for creating engaging learning experiences tailored to diverse audiences.

Join Middesk as an Engineering Manager for Entity Management, where you will lead a team of talented engineers focused on developing and optimizing solutions for managing entities. Your expertise will help us innovate and drive growth in our platform.

Join Our Team as an Engineering ManagerAt ModernFi, we are seeking an Engineering Manager who will play a crucial role in the development and scaling of our innovative technology platform that serves banks and credit unions across the nation. You will collaborate closely with our leadership team to enhance engineering execution, uphold technical standards, and empower a highly skilled team of engineers. Your contributions will significantly influence the operational effectiveness of financial institutions, enhancing the financial well-being of millions of Americans.We believe in attracting remarkable talent and providing them with the autonomy, responsibility, and trust to innovate. You will work alongside a talented team that prioritizes technical excellence, knowledge-sharing, and ongoing learning. This is a unique opportunity to influence the engineering culture, practices, and systems of a rapidly growing fintech company.Your role at ModernFi is vital. Our platform enables banks and credit unions to better serve their communities and enhance financial stability at scale. The systems you design will have a profound impact on the U.S. financial ecosystem.Your ResponsibilitiesKey DutiesLead, mentor, and develop a high-performing engineering team, nurturing growth, accountability, and technical excellence.Oversee the end-to-end delivery of significant engineering projects, from concept through architecture, implementation, testing, and launch.Collaborate closely with Product, business stakeholders, and leadership to define project scope, align on priorities, and ensure the rapid and reliable delivery of high-quality features.Establish and continuously refine engineering best practices, tools, and processes to support our growth.Take ownership of all code produced by your team. Conduct code reviews and actively participate in coding efforts to help achieve our objectives. At this stage, all team members are individual contributors regardless of title, committed to advancing our goals.Support recruitment, onboarding, and leveling initiatives to build a diverse and skilled engineering team.Ensure effective execution through clear goal-setting, thorough sprint planning, and proactive risk management.Maintain high technical standards by engaging in architecture discussions, reviewing code, and guiding engineers through complex technical challenges.Work cross-functionally to transform client feedback and business needs into scalable technical solutions.

As the Water and Wastewater Engineering Manager at Ramboll, you will lead a talented team in delivering innovative engineering solutions for water and wastewater projects. Your expertise will play a crucial role in ensuring the sustainability and efficiency of our systems, contributing to the well-being of communities.In this position, you will oversee project management, coordinate with multidisciplinary teams, and cultivate relationships with clients and stakeholders. You will be responsible for mentoring junior engineers and ensuring compliance with industry standards.