Senior Data Center Technician III — Lead & Resolve

Milestone Technologies, Inc.; Santa Clara (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

Milestone Technologies, Inc. is seeking a Data Center Technician III (L3) to maintain and troubleshoot critical data center infrastructure in our Santa Clara facility.

You will serve as an escalation point for hardware, network, and infrastructure issues while supporting uptime and standards. The role mentors junior staff, leads small projects, collaborates with engineering and facilities teams, and contributes to SOPs and knowledge base articles.

Qualifications

• Associate's degree in Information Technology, Computer Science, Engineering, or equivalent experience.
• Minimum 5 years of experience supporting enterprise or hyperscale data center environments.
• Experience with server hardware from Dell, HPE, Lenovo, Supermicro, or similar platforms.
• Strong understanding of networking fundamentals including TCP/IP, routing, switching, and cabling standards.
• Experience troubleshooting Linux and Windows server hardware platforms.
• Knowledge of data center power, cooling, rack infrastructure, and operational procedures.
• Experience with asset management systems and ticketing platforms such as ServiceNow.

Responsibilities

• Install, configure, troubleshoot, and decommission servers, storage systems, network devices, and related hardware.
• Perform advanced diagnostics and root cause analysis on hardware and infrastructure failures.
• Lead break/fix activities for critical incidents and coordinate resolution efforts with vendors and engineering teams.
• Execute rack-and-stack deployments, cable management, and infrastructure upgrades.
• Perform firmware updates, hardware refreshes, and lifecycle management activities.
• Maintain accurate asset management, inventory, and documentation records.
• Monitor and support data center environmental systems including power, cooling, and physical security.
• Support structured cabling standards for copper and fiber infrastructure.
• Assist with capacity planning, equipment deployment, and site expansion activities.
• Validate power utilization, rack elevations, and hardware placement according to engineering standards.
• Serve as the technical escalation point for L1 and L2 technicians.
• Lead troubleshooting efforts during production-impacting incidents.
• Perform root cause investigations and contribute to post-incident reviews.
• Develop preventive measures to reduce recurring operational issues.
• Lead small to medium-scale deployment, migration, and infrastructure projects.
• Coordinate hardware deployments and relocations across multiple data center environments.
• Partner with network, systems, and facilities teams to ensure successful project implementation.
• Create and maintain technical documentation, SOPs, and knowledge base articles.
• Provide technical guidance and training to junior technicians.
• Assist with onboarding and skills development of new team members.
• Promote safety, compliance, and operational excellence practices.
• Participate in on-call and after-hours support as required.

Skills

Server hardware troubleshooting

Rack and stack

Fiber cabling

Asset management

Hardware diagnostics

Network troubleshooting

Linux/Windows server support

Incident management

Documentation and processes

Education

Associate's degree in IT/CS/Engineering

Tools

Dell/HP/Lenovo server hardware

Job description

Milestone Technologies, Inc. is seeking a Data Center Technician III (L3) to maintain and troubleshoot critical data center infrastructure in our Santa Clara facility.

You will serve as an escalation point for hardware, network, and infrastructure issues while supporting uptime and standards. The role mentors junior staff, leads small projects, collaborates with engineering and facilities teams, and contributes to SOPs and knowledge base articles.