A&M Technologies, Inc is seeking an experienced Systems Administrator III to support a federal Operations & Maintenance (O&M) program. This individual will serve as a senior member of the infrastructure team responsible for maintaining mission-critical enterprise systems supporting a high-availability government environment. The ideal candidate will possess extensive experience administering Windows and Linux environments, virtualization platforms, enterprise storage, disaster recovery, system hardening, patch management, and troubleshooting complex infrastructure issues. The candidate will also provide technical leadership, mentor junior administrators, and support modernization initiatives. Primary Responsibilities • Administer, maintain, and troubleshoot enterprise Windows and Red Hat Enterprise Linux (RHEL) server environments • Perform installation, configuration, maintenance, hardening, and lifecycle management of enterprise infrastructure • Support VMware virtualization environments including VMware Cloud Foundation (VCF), virtual machines, clusters, and virtual desktop infrastructure (VDI) • Support Cisco HyperFlex infrastructure and enterprise storage platforms including NetApp • Perform server patching, vulnerability remediation, and system hardening in accordance with DoD security requirements • Maintain Active Directory, Group Policy, DNS, DHCP, certificate services, and authentication services • Support enterprise backup, replication, disaster recovery (DR), and Continuity of Operations (COOP) planning • Perform root cause analysis for production incidents and provide advanced troubleshooting support • Maintain Citrix infrastructure and other enterprise application platforms • Support enterprise monitoring solutions including SolarWinds • Produce and maintain technical documentation including: • SOPs • Runbooks • As-built documentation • System diagrams • Capacity plans • Disaster Recovery documentation • Evaluate emerging technologies and develop proof-of-concepts for government review • Participate in Configuration Control Board (CCB) activities • Coordinate infrastructure upgrades, migrations, and modernization efforts • Support Help Desk escalations and participate in an on-call rotation • Provide after-hours support for Priority 1 outages with a required 2-hour response Required Qualifications • Bachelor's degree in Information Technology, Computer Science, Engineering, or related field (or equivalent experience) • 8+ years of Systems Administration experience • Active Top Secret Clearance • DoD 8140/8570 compliant certification (Security+ CE or equivalent) • Strong experience administering: • Windows Server 2016/2019/2022 • Red Hat Enterprise Linux (RHEL) • Experience supporting VMware infrastructure • Experience supporting enterprise storage solutions • Experience with enterprise backup and disaster recovery • Experience performing patch management and vulnerability remediation • Experience with Active Directory, Group Policy, DNS, and DHCP • Experience creating technical documentation • Strong troubleshooting skills across Windows, Linux, virtualization, and enterprise infrastructure • Ability to support on-call operations and after-hours maintenance Desired Qualifications • VMware Certified Professional (VCP) • Red Hat Certified System Administrator (RHCSA) or RHCE • Experience with: • Cisco HyperFlex • VMware Cloud Foundation (VCF) • NetApp Storage • Citrix • SolarWinds • SQL Server • Microsoft Exchange • Virtual Desktop Infrastructure (VDI) • Experience supporting Cross Domain Solutions (CDS) • Experience supporting Multiple Independent Levels of Security (MILS) • Experience with STIG implementation and compliance • Experience supporting DoD or Intelligence Community environments • Knowledge of SECNAV M-5239.2 • Experience with automation using PowerShell, Bash, Python, or Ansible • Experience supporting enterprise GIS environments • Experience participating in disaster recovery exercises Compensation & Benefits Highlights • Target Salary Range: $180,000-$200,000 DOE • Competitive salary and benefits package • Employee referral bonuses of up to $10,000 for eligible hires • Additional bonus opportunities for exceptional performance and contributions to business development and company growth Health & Wellness • Comprehensive medical, dental, and vision coverage for employees and eligible dependents • Deductible reimbursement of up to $1,000 for employee-only coverage and up to $2,000 for family coverage upon meeting plan deductibles Income Protection • 100% company-paid short-term disability insurance • 100% company-paid long-term disability insurance • 100% company-paid accidental death and dismemberment (AD&D) insurance • Company-paid life insurance coverage up to $150,000 Retirement • 401(k) plan with immediate vesting upon eligibility. Employees become eligible after six months of service • Pre-tax and Roth contribution options available • Company Match: A&M provides a dollar-for-dollar match on employee contributions up to 6% of eligible compensation • Non-Elective Contribution (NEC): A&M provides an additional 6% company contribution to all eligible participants, regardless of employee contributions Paid Time Off • Up to 18 days of flexible paid time off (PTO) • Additional PTO awarded based on years of service: +2 days after 3 years, +4 days after 6 years, and +7 days after 10 years • 10 paid holidays annually, including up to four floating holidays Work-Life Balance • Flexible work schedules, including flex time and compressed work schedules, based on contract and project requirements