Operating System Engineer Jobs in Bellevue, WA (NOW HIRING)

Job Summary:
Addison Group is seeking a skilled and motivated hardware infrastructure engineer to join their Enterprise IT team. The role involves managing and operating the physical compute, storage, and power infrastructure in a medium-sized data center while collaborating closely with the networking team.
Responsibilities:
• Maintain and operate a medium-sized private data center, including rack management, cabling, and capacity planning
• Support and manage multiple local MDF (Main Distribution Frame) and IDF (Intermediate Distribution Frame) spaces across company locations
• Perform regular site walkthroughs and inspections to ensure physical infrastructure integrity
• Coordinate with facilities and site management teams on space, power, and cooling requirements
• Manage UPS systems and PDUs (Power Distribution Units) across the data center and MDF/IDF locations
• Monitor UPS health, battery status, load levels, and runtime; coordinate battery replacements and preventive maintenance
• Respond to power alarms, perform load balancing, and support planned maintenance windows involving power systems
• Maintain documentation of power circuits, load maps, and single-line diagrams
• Monitor data center and MDF/IDF environmental conditions including temperature, humidity, and airflow
• Respond to environmental alerts and escalate to facilities or management as appropriate
• Deploy, configure, and maintain VMware vSphere/ESXi environments including vCenter management
• Manage physical server hardware lifecycle: procurement support, racking, cabling, firmware updates, and decommissioning
• Monitor host performance, resource utilization, and capacity; proactively address bottlenecks
• Trouble shoot hardware failures including CPUs, memory, storage controllers, NICs, and drive arrays
• Coordinate with vendors (Primarily HPE) on hardware support and RMA processes
• Administer SAN, NAS, local storage solutions and cloud archives; manage volumes, datastores, and provisioning
• Monitor storage health, performance, capacity and plan and execute expansions as needed
• Manage storage replication and snapshots in coordination with retention policy and backup strategy
• Partner closely with the networking team on rack and cabling coordination, infrastructure changes, and joint projects
• Support change management processes including maintenance windows, change tickets, and post-implementation reviews
• Contribute to IT documentation including runbooks, asset inventories, and infrastructure diagrams
• Participate in on-call rotation for after-hours infrastructure emergencies
• Administer enterprise backup solutions for servers, VMs and Microsoft Office365/Azure assets
• Schedule, monitor, and validate backup jobs; ensure recovery objectives (RTO/RPO) are consistently met
• Perform and document restore tests on a regular cadence per policy
Qualifications:
Required:
• Bachelor of Science or Bachelor of Arts degree, or equivalent work experience
• 6+ years of hands-on experience in a data center or enterprise infrastructure role
• Proficiency with VMware vSphere/ESXi and vCenter administration
• Experience managing physical server hardware from major vendors
• Working knowledge of SAN/NAS storage platforms and concepts (iSCSI, NFS, FC)
• Experience administering enterprise backup solutions and validating recovery procedures
• Hands-on experience with APC UPS systems or similar enterprise UPS platforms
• Familiarity with PDU management and power capacity planning
• Comfort working in data center environments including structured cabling, rack management, and physical hardware installation
• Strong troubleshooting skills with an ability to diagnose and resolve complex hardware and infrastructure issues
• Ability to lift and rack equipment up to 50 lbs. and work in physically demanding data center environments
• Ability to diagnose and resolve complex technical issues quickly, while leveraging IT change management processes
• VMware VCP (vSphere) certification or equivalent experience
Preferred:
• HPE preferred
• APC/Schneider Electric product certifications or formal training
• Experience with environmental monitoring tools (Sunbird, or similar)
• Exposure to DCIM (Data Center Infrastructure Management) tools
• Familiarity with ITIL practices and formal change management processes
• Experience in a multi-site or campus environment
• Scripting or automation skills (Ansible, PowerShell, Bash) for infrastructure tasks
• Excellent communication skills with the ability to explain technical concepts to non-technical users
• Experience partnering cross-functionally with networking, application and cloud technical teams
• Strong communication skills desired. The service provider will possess a high degree of trust and integrity, communicate openly and display respect, and a desire to foster teamwork.
Company:
Addison Group specializes in filling company’s contract, contract-to-hire, or direct hire positions with professional candidates. Founded in 1999, the company is headquartered in Chicago, USA, with a team of 1001-5000 employees. The company is currently Late Stage.