Systems Administrator (Onsite)

Collins Aerospace, an RTX company, seeks a Windows Administrator for an onsite position in McKinney, TX. The role supports classified IT infrastructure within a collaborative, multi‑platform environment and requires an active U.S. Secret security clearance. What You Will Do Provide system administration in a heterogeneous Microsoft Windows (Primary OS) and RedHat Enterprise Linux environment. Apply Windows Server internals knowledge including DNS, DHCP, AD, and Linux integration. Troubleshoot technical problems of moderate to high complexity, integrating hardware and operating systems. Understand and manage data RAID systems, backup methods, and technologies. Install and configure software applications requested by end users. What You Will Learn Develop relationships with global peers in a collaborative environment. Work with cybersecurity professionals to maintain security requirements. Education & Experience University degree with at least 2 years of relevant experience, or an advanced degree, or 6 years of experience in lieu of a degree. Qualifications U.S. citizenship required. Active DoD Secret clearance required. Obtain DoDD 8140 / 8570 certification within 6 months of start date. Experience with security infrastructure products and capabilities. Hands‑on experience with Windows and Linux/Unix servers and workstations. Experience with VMware vCenter, vSphere, VDI (Horizon), ESXi, or other virtual computing methods. Knowledge of Windows architecture, deployment, administration, performance monitoring/tuning, security hardening, and troubleshooting. Familiarity with infrastructure backup, restore, disaster recovery, and business continuity products. Experience with application installation and multi‑server environment deployment. Skills We Value Experience with NetApp storage systems. Scripting skills in PowerShell, Ansible, and Python. Experience hardening systems using tools like SCAP and following STIGs. Support for engineers in software, simulations, and hardware development. Benefits Medical, dental, and vision insurance. Three weeks of vacation for newly hired employees. Generous 401(k) plan with employer matching and retirement contribution including Lifetime Income Strategy. Tuition reimbursement program. Student loan repayment program. Life insurance and disability coverage. Optional additional coverages: pet, home, auto, extra life and accident, critical illness, group legal, ID theft protection. Birth, adoption, and parental leave benefits. Ovia health, fertility, and family planning support. Adoption assistance and Autism Benefit. Employee assistance program with up to 10 free counseling sessions. Healthy You incentives, wellness rewards program. Doctor on Demand and Teladoc medical experts. Bright Horizons child and elder care services. Salary range: 64,000 USD – 128,000 USD. Salary determination is based on role, function, experience, education, and key skills. Background check and drug screen required for all U.S. new hires; drug screen performed only on re‑hires who have been gone for more than one year. Diversity & Inclusion Statement Diversity drives innovation: inclusion drives success. We believe a multitude of approaches and ideas enable us to deliver the best results for our workforce, workplace, and customers. We are committed to fostering a culture where all employees can share their passions and ideas to tackle the toughest challenges in our industry. #J-18808-Ljbffr