Job#: 3026313 Job Description: Mid-Senior Linux Engineer - Onsite | Contract-to-HireA major technology services provider supporting a large county-wide enterprise environment is seeking a
Mid-Senior Linux Engineer for a long-term contract-to-hire opportunity. This position plays a critical role in maintaining and advancing core infrastructure that supports essential public-sector operations. The environment is mature, stable, and highly collaborative, with long-standing program continuity.
This opening is a
backfill for a senior Linux/AIX engineer who was foundational to ongoing platform and ERP initiatives.
AIX is strongly preffered.
Position OverviewThe Linux Engineer will support a large enterprise environment with a heavy focus on
Red Hat Enterprise Linux and automation. The role requires strong hands-on operational experience, deep troubleshooting skills, and the ability to support mission-critical systems. AIX experience is highly preferred, though Linux is the primary workload.
Work Model & Location- Onsite in Santa Ana, CA
- Standard business hours with occasional after-hours maintenance
- 6-month contract-to-hire
- Long-term program stability (multi-year contract extension already in place)
Key Responsibilities- Administer and support enterprise Red Hat Linux environments across production and non-production systems
- Perform monthly patching, system hardening, and compliance activities
- Troubleshoot OS-level, application-level, and infrastructure-level issues
- Manage privileged access integrations and security controls
- Automate operational tasks using Ansible or similar tools
- Support ERP-related infrastructure and other mission-critical platforms
- Collaborate with cross-functional teams, including network, storage, and application groups
- Participate in on-call rotations and support high-availability environments
- Contribute to documentation, runbooks, and operational standards
- Provide AIX support where applicable (preferred but not required)
Required Qualifications- 5+ years of hands-on Linux engineering or administration experience
- Strong experience with Red Hat Enterprise Linux in large enterprise environments
- Proficiency with:
- System patching, hardening, and lifecycle management
- Troubleshooting performance, networking, and OS-level issues
- Privileged access tools and security integrations
- Experience with Ansible (or similar automation tools) for operational automation
- Ability to operate as an "in-the-trenches" engineer-hands-on, detail-oriented, and execution-focused
- Strong communication skills and ability to work in a collaborative team environment
- Must have lived in the U.S. for 10+ years (background requirement)
Preferred Qualifications- AIX administration experience (LPARs, VIOS, storage integration, patching)
- Experience supporting ERP or large enterprise application environments
- Familiarity with virtualization platforms (VMware preferred)
- Experience with monitoring, logging, and configuration management tools
- Scripting experience (Bash, Python, or similar)
About the EnvironmentThis role supports a large, county-wide managed services program with a long history of stability and ongoing modernization initiatives. The team values reliability, ownership, and strong operational discipline. Engineers who enjoy deep technical work, automation, and supporting critical infrastructure will thrive here.
Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.
Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.
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