Unix System Administrator

About the PositionAs a Linux Systems Engineer at Jane Street, you will play a crucial role in managing the essential infrastructure that supports our technology operations. This dynamic team of Systems Engineers, Administrators, and Programmers is dedicated to enhancing and maintaining the platform that drives Jane Street's production trading systems. With a…

Join our dynamic team at ncs3 as a Senior Unix/Linux Systems Engineer, where you will play a pivotal role in designing, implementing, and maintaining robust Unix/Linux systems. You will leverage your expertise to optimize system performance, enhance security protocols, and ensure high availability of critical services.In this position, you will collaborate with cross-functional teams to deliver innovative solutions while mentoring junior engineers and contributing to the overall success of our projects. If you are passionate about advancing your career in a fast-paced environment and driving technological excellence, we want to hear from you!

Join our innovative team at ncs3 as a Systems Engineer specializing in Linux and Windows environments. This is an excellent opportunity for tech enthusiasts eager to contribute to exciting projects and enhance their skills in a dynamic setting.

Join our dynamic team at Accion Labs as a Linux Systems Engineer, where you'll play a crucial role in enhancing our Linux-based systems. This is a unique opportunity to work in a collaborative environment, utilizing your technical skills to solve complex problems and improve system performance.

Join our innovative team as a Red Hat Linux System Engineer where you will play a critical role in managing and optimizing our systems. You will be responsible for deploying, configuring, and troubleshooting Red Hat Linux environments, ensuring high availability and performance. This position requires a proactive mindset and the ability to work collaboratively in a fast-paced environment.

Execute monthly and ad-hoc patching for various servers as per contract obligations. Conduct ongoing performance tuning, hardware upgrades, and optimize resources as needed. Configure CPU, memory, and disk partitions accordingly. Generate monthly performance reports and collect server health statistics to support capacity planning initiatives. Perform level 1 troubleshooting and maintenance for storage systems, collaborating with level 2 storage teams for deeper troubleshooting and deployment of new storage solutions. Address additional server-related requests as they arise. Facilitate vendor escorts on the customer’s premises when required. Be available for rotating standby to handle night or weekend tasks as necessary.

Join our dynamic team as a System Engineer specializing in RedHat Linux, where you will play a key role in the administration and management of our IT infrastructure. Your expertise will ensure the seamless operation of various operating systems, hardware, and software platforms, enhancing system reliability and ensuring compliance with ITIL V4 standards.System Administration: Oversee and maintain systems across diverse platforms including Windows Server, Linux (RedHat, Suse, Ubuntu), Solaris, IBM AIX, and Oracle Linux.Software & Hardware Management: Manage components such as Active Directory, DNS, DHCP, Azure AD, clustering tools, file servers, SAN/NAS storage, and virtualization platforms.Monitoring & Troubleshooting: Proactively analyze performance issues across development, staging, production, and disaster recovery environments.Transition Management: Facilitate the transfer of responsibilities from existing vendors or internal teams.Compliance & Security: Uphold legal and internal compliance standards through regular patching and security updates.Documentation: Develop and maintain Standard Operating Procedures (SOPs), system configurations, and performance, security, and incident reports.Automation: Introduce tools to automate processes like provisioning, monitoring, and issue resolution to enhance efficiency.User Support: Deliver clear communication and support to users while managing privileged access.Backup: Collaborate with backup teams to ensure effective backup processes, scripts, and restore procedures are in place and tested.Access Control: Administer access rights in compliance with access policies.System Availability: Utilize enterprise monitoring tools to ensure system uptime and hardware maintenance.Disaster Recovery: Engage in the planning, testing, and execution of disaster recovery strategies.Configuration Management: Maintain up-to-date hardware/software configurations.Performance Tuning: Monitor and optimize system performance and configurations.Problem & Change Management: Lead issue resolution, perform impact analysis, and manage change requests for smooth implementation.Audit Compliance: Support audits by providing necessary data and addressing findings.Capacity Planning: Assess usage and forecast future system needs.Security Oversight: Establish and enforce security policies, conduct audits, and assist with investigations.

About the PositionAs a Linux Engineer at Jane Street, you'll play a vital role in managing the essential infrastructure that supports our cutting-edge technology. This position is tailored for dedicated Systems Engineers, Administrators, and Programmers who are committed to enhancing and maintaining the platform that drives our production trading systems. With a blend of proprietary and open-source software, you will have the opportunity to explore and innovate across various levels of technology. On any given day, you may find yourself debugging kernel performance, developing management tools, or swiftly addressing production issues. Tackling complex systems challenges is at the heart of what we do.Our ongoing projects emphasize deployment automation, scalable configuration management, and meticulous monitoring. We strive for automation not out of laziness, but because it significantly reduces errors and eases our workload—plus, we enjoy it!Joining our team means engaging with nearly every aspect of the company. Collaborating directly with colleagues in Trading, Technology, and Operations, you'll help design and maintain systems with a company-wide impact. By utilizing feedback from different teams and our custom monitoring tools, we aim to resolve production challenges promptly, conduct thorough root-cause analyses, and implement long-term solutions in a clean and efficient manner.

Role overview fuku is hiring a Senior Unix Systems Engineer in Singapore to support its infrastructure team. This team manages high-availability payment systems that process real-time financial transactions. The position centers on maintaining secure, stable, and high-performing Unix and Linux platforms across production, disaster recovery, and testing environments. Technical ownership of these environments is a key part of the role. What you will do Administer and maintain Unix and Linux servers to ensure reliability in all environments. Handle system upgrades, apply security hardening and patches, and monitor infrastructure for stability and compliance. Respond to incidents, analyze root causes, and implement preventive solutions that align with service level agreements. Oversee change, release, and deployment activities to reduce disruption to payment systems and related services. Monitor system capacity, tune performance, contribute to infrastructure projects, and maintain thorough documentation and operational procedures. Requirements Bachelor’s degree in IT, Computer Science, or a related field. Minimum 6 years of experience managing Unix, Linux, and middleware environments, ideally in enterprise or financial services. Strong hands-on skills with scripting, automation, system monitoring, backup solutions, and SAN storage technologies. Experience with OS hardening, patching, performance tuning, and supporting high-availability production systems. Excellent analytical, communication, and problem-solving skills, with the ability to work independently. Why join fuku? This role supports infrastructure critical to financial operations. It offers exposure to complex enterprise environments and the opportunity to deepen expertise in resilient systems engineering. How to apply To express interest or ask questions, contact Naveen at naveen.vasudevan@Tangspac.com.

Join our passionate team at xcellink as a skilled RHEL Systems Engineer, where you can contribute to exciting projects and enhance your professional journey. You will play a vital role in managing and supporting our Red Hat Enterprise Linux (RHEL) environments. Your expertise in RHEL operations, installation, hardening, upgrade, and patching will be essential in ensuring the robustness and security of our systems. Familiarity with Azure is a valuable asset in this position.Key Responsibilities: RHEL Operations: Provide extensive support for RHEL environments, including troubleshooting, performance optimization, and ensuring continuous availability. Installation & Configuration: Carry out the installation, configuration, and maintenance of RHEL systems, ensuring optimal performance and security measures are in place. Hardening & Security: Develop and implement security hardening strategies for RHEL systems to defend against vulnerabilities and threats. Upgrades & Patching: Execute system upgrades and apply patches to maintain the security and currency of RHEL environments. Collaboration: Collaborate closely with IT teams and stakeholders to ensure smooth integration and operation of RHEL systems. Documentation: Create and maintain comprehensive documentation of system configurations, procedures, and modifications.

Join our dynamic team as a Linux & Ansible Automation Engineer (Level 2)! We are seeking a highly motivated and skilled engineer with a minimum of 3 years’ hands-on experience in infrastructure automation, particularly utilizing Ansible and the Ansible Automation Platform (AAP). In this role, you will be instrumental in developing and managing automation solutions that drive operational efficiency and ensure the reliability of our Linux environments.Key Responsibilities:Design, develop, and maintain Ansible playbooks, roles, and collections for the automated setup of systems, deployment of applications, and provisioning of infrastructure.Oversee and support the Ansible Automation Platform (AAP), including the management of job templates, inventories, workflows, and credentials.Collaborate with DevOps, Cloud, and Security teams to implement Infrastructure as Code (IaC) solutions effectively.Automate critical tasks such as patch management, compliance verification, and system hardening on Linux servers.Diagnose and resolve issues related to automation processes and system performance.Produce and maintain detailed documentation of automation workflows and best practices.Mentor junior engineers and work closely with cross-functional teams to foster automation initiatives.Qualifications:Required Skills and Experience:Minimum of 3 years of experience in automation using Ansible.Strong expertise in Linux system administration (e.g., RHEL, CentOS, Ubuntu).Proficient in developing and managing Ansible playbooks, roles, and modules.Hands-on experience with Ansible Automation Platform or AWX.Familiarity with scripting languages such as Bash or Python.Competent in using Git and adhering to best practices in version control.Basic knowledge of CI/CD pipelines and their integration with automation tools.Excellent troubleshooting and problem-solving skills.Preferred Qualifications:Red Hat Certified Specialist in Ansible Automation or similar certification.Experience with public cloud services, including AWS, Azure, or Google Cloud.Familiarity with containerization technologies like Docker or Podman.Understanding of monitoring tools such as Prometheus and Grafana.Experience with IT service management tools like ServiceNow.

Join Akuna Capital:At Akuna Capital, we pride ourselves on being a pioneering trading firm with a strong emphasis on teamwork, state-of-the-art technology, and data-driven automation. As an options market maker, we are dedicated to providing competitive quotes for buying and selling. Our success is rooted in our ability to design and implement our own low-latency technologies, innovative trading strategies, and sophisticated mathematical models. With a flat organizational structure, every voice is heard, and the best ideas come to the forefront.Founded by visionaries including Andrew Killion in Sydney, Akuna opened its first office in 2011 in Chicago, the global hub for derivatives and options trading. Our reach has since expanded to include offices in Sydney, Shanghai, Singapore, and London.Your Role as a Systems Engineer:We are seeking a skilled Systems Engineer to ensure the optimal health of Akuna’s Linux server platform. This role involves the design, deployment, and maintenance of our high-performance platform that underpins our trading operations. You will automate daily software and hardware tasks while developing and maintaining scripts and tools. The ideal candidate is self-driven, proactive, and capable of managing projects with minimal oversight. In this position, you will:Explore new products and techniques to enhance efficiency and performance.Architect and maintain a tiered storage solution.Oversee the management of Akuna’s server infrastructure across both third-party and local data centers.Engage in system analysis, monitoring, performance tuning, and provide additional support as necessary.

Join our dynamic cybersecurity team as a Cyber Security Software Engineer, specializing in Linux systems. You will be at the forefront of developing robust security solutions that protect our clients from emerging threats. This role offers a unique opportunity to work on innovative projects, collaborate with industry experts, and enhance your skills in a fast-paced environment.

We are seeking a highly skilled and motivated Systems Engineer / Senior Systems Engineer to join our innovative team. In this pivotal role, you will be responsible for designing, implementing, and maintaining complex systems to ensure optimal performance and reliability. You will collaborate with cross-functional teams to deliver cutting-edge solutions that meet our clients' needs.

ncs3 is seeking a Systems Engineer focused on Security Systems to join the team in Singapore. This position centers on designing, implementing, and maintaining security solutions that protect client assets and sensitive information. Role overview As a Systems Engineer, the main responsibility is to ensure the integrity and confidentiality of data through robust security practices. The role involves hands-on work with security systems and requires technical expertise to address evolving security needs. What you will do Design and implement security solutions tailored to client requirements Maintain and support existing security systems to ensure ongoing protection Collaborate with cross-functional teams to develop and refine security protocols Conduct risk assessments to identify and address vulnerabilities Provide ongoing technical support for deployed security systems Requirements Technical background in security systems Strong interest in technology and best practices for security Commitment to excellence in safeguarding information Ability to work effectively with teams across different functions

Role overview NCS3 is hiring a Senior Systems Engineer in Singapore. The role centers on designing, implementing, and improving complex systems that underpin company operations. Daily work involves integrating various technologies and processes to keep performance smooth and dependable. What you will do Design and implement system architectures that meet business needs. Optimize current systems to boost reliability and performance. Work with teams from different functions to create solutions tailored for clients. Support integration of a mix of technologies and workflows. Collaboration This position partners with colleagues across departments to deliver solutions that enhance operational efficiency for clients.

Join our innovative team at ncs as a System Engineer, where you will play a crucial role in designing, implementing, and maintaining systems that drive our operations. Your technical expertise will contribute to optimizing our processes and ensuring seamless integration across various platforms.

Join Accion Labs as a System Engineer, where you will play a crucial role in designing and implementing innovative systems that drive our business forward. As a System Engineer, you will collaborate with cross-functional teams to develop solutions that meet the needs of our diverse clientele.

Join our dynamic team at ncs3 as a Senior Systems Engineer specializing in Security Systems. In this pivotal role, you will be responsible for designing, implementing, and maintaining advanced security infrastructure to protect organizational assets. Your expertise will guide the development of innovative security solutions that enhance operational efficiency and safeguard sensitive information.We seek a proactive individual with a passion for technology and a strong commitment to excellence. You will work collaboratively with cross-functional teams to identify security vulnerabilities and propose effective solutions.