{"schemaVersion":"jobsearcher.job.v1","id":"588e2a3e347bc32f9dbe43a6","url":"https://jobsearcher.com/jobs/588e2a3e347bc32f9dbe43a6","canonicalUrl":"https://jobsearcher.com/jobs/588e2a3e347bc32f9dbe43a6","title":"RHEL Systems Engineer","description":"Title: Sr. RHEL Designer/Engineer (OT/SCADA)\nLocation: preference for Houston, TX or in Miami, FL, Houston, TX or Reston, VA\nTerm: Full Time, Direct Hire – remote but may need to travel to client locations periodically, especially at the start or kick off of a project.\n\nPosition Overview\nOur client delivers turnkey clean energy and power infrastructure solutions across the Americas. We design, build, and operate advanced Battery Energy Storage Systems (BESS) and mission-critical networks for data centers, utilities, and industrial clients. Our technology-first mindset powers systems from SCADA to cloud—and everything in between.\nAbout The Position\nThe Senior RHEL engineer will own the OS and container platform behind our on-premises energy-management deployments. You'll build and harden the tailored RHEL image and the containerized Ignition SCADA workload running on industrial PCs across U.S. data-center sites, and act as our deep RHEL authority and L3 escalation point. This is a platform-engineering and expertise role — not field installation.\nYou will own our OS architectures, container builds and configuration, and the runtime that hosts Ignition, while the SCADA team owns everything configured inside Ignition (tags, screens, logic). On the network side, the host firewall and OS-level networking (interfaces, routing, DNS, firewalld/nftables) are yours, while the physical and site network beyond the host NIC belongs to Operational Technology (OT).\nTravel to third-party data-center sites is for troubleshooting and support only. The separate OT team commissions and deploys every machine, so you won't install systems in the field.\nResponsibilities:\nBuild, version, and maintain a reproducible, turnkey RHEL image tailored to the SCADA host's needs (time sync, firewall/ports, storage, service ordering, resource tuning).\nOwn the SCADA container image end to end: Containerfile, base image, JVM, persistence, ports, hardening, scanning, and registry.\nRun containers as systemd services via Podman and quadlets.\nHarden the OS and images to a recognized baseline (CIS/STIG) and define a patching and lifecycle strategy for OT uptime and restricted/disconnected sites (offline/mirrored registry).\nTroubleshoot full-stack — OS, container runtime, and application runtime behavior — remotely and on-site, handing off application-level issues to the SCADA team.\nOwn host-level networking and firewall configuration (interfaces, routing, DNS, firewalld/nftables, and port exposure for the SCADA container), and lead connectivity troubleshooting between the host and site infrastructure.\nDocument runbooks for the OT team and help define the connectivity and security posture.\nMaintain the Windows image pipeline (Packer-based) in steady state once established: periodic patching, hardening updates, and image rebuilds.\n\nQualifications\n7+ years of senior, hands-on production RHEL/Linux engineering.\nContainer-native delivery: Podman, quadlets/systemd, building and owning container images (including packaging a JVM-based app such as Ignition), and registry management.\nReproducible, turnkey, versioned RHEL image building (bootc, Kickstart, Image Builder/osbuild, or Ansible-driven).\nOS and image hardening to a recognized baseline (CIS/STIG).\nPatch and lifecycle management for restricted/disconnected environments, including offline/mirrored content and registries.\nAutomation (Ansible) and version control.\nStrong Linux networking and diagnostics: firewall administration (firewalld/nftables) and packet/connectivity tooling (Wireshark, tcpdump, ss, ip), plus containerized debug environments (toolbox).\nConfidence operating as the RHEL authority, with strong documentation habits.\n2vY0NU006G","company":"Ascending","rawCompany":"ascending","city":"Remote","state":"OR","isRemote":false,"isActive":false,"createdAt":"2026-08-05T14:36:17.465Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"RHEL Systems Engineer","description":"Title: Sr. RHEL Designer/Engineer (OT/SCADA)\nLocation: preference for Houston, TX or in Miami, FL, Houston, TX or Reston, VA\nTerm: Full Time, Direct Hire – remote but may need to travel to client locations periodically, especially at the start or kick off of a project.\n\nPosition Overview\nOur client delivers turnkey clean energy and power infrastructure solutions across the Americas. We design, build, and operate advanced Battery Energy Storage Systems (BESS) and mission-critical networks for data centers, utilities, and industrial clients. Our technology-first mindset powers systems from SCADA to cloud—and everything in between.\nAbout The Position\nThe Senior RHEL engineer will own the OS and container platform behind our on-premises energy-management deployments. You'll build and harden the tailored RHEL image and the containerized Ignition SCADA workload running on industrial PCs across U.S. data-center sites, and act as our deep RHEL authority and L3 escalation point. This is a platform-engineering and expertise role — not field installation.\nYou will own our OS architectures, container builds and configuration, and the runtime that hosts Ignition, while the SCADA team owns everything configured inside Ignition (tags, screens, logic). On the network side, the host firewall and OS-level networking (interfaces, routing, DNS, firewalld/nftables) are yours, while the physical and site network beyond the host NIC belongs to Operational Technology (OT).\nTravel to third-party data-center sites is for troubleshooting and support only. The separate OT team commissions and deploys every machine, so you won't install systems in the field.\nResponsibilities:\nBuild, version, and maintain a reproducible, turnkey RHEL image tailored to the SCADA host's needs (time sync, firewall/ports, storage, service ordering, resource tuning).\nOwn the SCADA container image end to end: Containerfile, base image, JVM, persistence, ports, hardening, scanning, and registry.\nRun containers as systemd services via Podman and quadlets.\nHarden the OS and images to a recognized baseline (CIS/STIG) and define a patching and lifecycle strategy for OT uptime and restricted/disconnected sites (offline/mirrored registry).\nTroubleshoot full-stack — OS, container runtime, and application runtime behavior — remotely and on-site, handing off application-level issues to the SCADA team.\nOwn host-level networking and firewall configuration (interfaces, routing, DNS, firewalld/nftables, and port exposure for the SCADA container), and lead connectivity troubleshooting between the host and site infrastructure.\nDocument runbooks for the OT team and help define the connectivity and security posture.\nMaintain the Windows image pipeline (Packer-based) in steady state once established: periodic patching, hardening updates, and image rebuilds.\n\nQualifications\n7+ years of senior, hands-on production RHEL/Linux engineering.\nContainer-native delivery: Podman, quadlets/systemd, building and owning container images (including packaging a JVM-based app such as Ignition), and registry management.\nReproducible, turnkey, versioned RHEL image building (bootc, Kickstart, Image Builder/osbuild, or Ansible-driven).\nOS and image hardening to a recognized baseline (CIS/STIG).\nPatch and lifecycle management for restricted/disconnected environments, including offline/mirrored content and registries.\nAutomation (Ansible) and version control.\nStrong Linux networking and diagnostics: firewall administration (firewalld/nftables) and packet/connectivity tooling (Wireshark, tcpdump, ss, ip), plus containerized debug environments (toolbox).\nConfidence operating as the RHEL authority, with strong documentation habits.\n2vY0NU006G","datePosted":"2026-08-05T14:36:17.465Z","dateModified":"2026-08-05T14:36:17.465Z","hiringOrganization":{"@type":"Organization","name":"Ascending","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Remote","addressRegion":"OR","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"588e2a3e347bc32f9dbe43a6"},"url":"https://jobsearcher.com/jobs/588e2a3e347bc32f9dbe43a6"}}