[Remote] Linux Systems Engineer

Note: The job is a remote job and is open to candidates in USA. Apex Systems is a world-class IT services company that serves thousands of clients across the globe. They are seeking a Linux Systems Engineer to lead the design, implementation, and lifecycle management of mission-critical OT platforms across Windows and Linux environments, ensuring secure and scalable infrastructure solutions. Responsibilities • Design, implement, and maintain enterprise-grade systems across Windows Server and Linux platforms, ensuring high availability, security, and compliance in OT environments • Architect and optimize Linux systems for performance and scalability, including advanced security hardening (SELinux, firewalls, SSH) and lifecycle management using automation tools (Ansible, Puppet) • Lead identity integration across Active Directory and Linux directory services, ensuring seamless authentication and authorization • Develop and enforce IAM strategies, including IGA and PAM solutions, while collaborating with cybersecurity teams to implement zero-trust principles • Drive automation of provisioning, configuration, and patching through advanced scripting (PowerShell, Bash, Python) and orchestration frameworks • Oversee software deployment and configuration management using SCCM, Intune, and Linux-native tools • Integrate and secure hybrid cloud platforms (Azure, AWS), ensuring regulatory compliance and operational resilience • Troubleshoot complex system issues across Windows and Linux, including kernel, networking, and storage, and lead root cause analysis and remediation • Configure and maintain core Linux services (DNS, DHCP, NTP, syslog) and support containerization/orchestration initiatives (Docker, Kubernetes) • Monitor and optimize system performance, implementing proactive measures for disaster recovery and business continuity • Produce and maintain architectural documentation, operational procedures, and governance frameworks • Act as a technical advisor in a Scaled Agile (SAFe) environment, influencing system roadmaps and enterprise architecture decisions • Mentor junior engineers and foster knowledge-sharing across teams Skills • Expertise in Linux system administration, including performance tuning and advanced troubleshooting • Strong knowledge of Linux security frameworks and compliance standards • Hands-on experience with Linux automation and configuration management tools (e.g., Ansible, Puppet, Chef) • Familiarity with Linux networking concepts and tools (iptables, netfilter, tcpdump) • Extensive experience in enterprise systems engineering, with proven leadership in designing and managing large-scale Windows and Linux environments • Advanced knowledge of Windows Server (2016/2019/2022) and Linux distributions (RHEL, Debian, Ubuntu) • Deep understanding of Active Directory architecture and Linux identity management (LDAP, Kerberos, SSSD) • Proficiency in IAM, IGA, and PAM technologies (e.g., SailPoint, CyberArk) • Strong scripting and automation skills across PowerShell, Bash, and Python • Expertise in SCCM, Intune, and Linux-native configuration management tools • Hands-on experience with cloud platforms (Azure, AWS) and hybrid integration strategies • Proven track record of leading enterprise migrations and modernization initiatives • Experience implementing zero-trust architectures and advanced security frameworks • Familiarity with containerization and orchestration (Docker, Kubernetes) in OT contexts • Knowledge of virtualization technologies (VMware, Hyper-V) and disaster recovery planning Benefits • Medical • Dental • Vision • Life • Disability • ESPP (employee stock purchase program) • 401K program • HSA (Health Savings Account on the HDHP plan) • SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions • Corporate discount savings program Company Overview • Apex Systems, a division of On Assignment, provides organizations with IT staffing solutions to address gaps in their current workforce. It was founded in 1995, and is headquartered in Richmond, Virginia, USA, with a workforce of 1001-5000 employees. Its website is Company H1B Sponsorship • Apex Systems has a track record of offering H1B sponsorships, with 24 in 2025, 21 in 2024, 35 in 2023, 26 in 2022, 29 in 2021, 38 in 2020. Please note that this does not guarantee sponsorship for this specific role. Apply tot his job