Senior Data Center Technician – Night Shift Lead (L3)

Milestone Technologies, Inc.; Santa Clara (CA); On-site; USD 33,000 - 55,000; Full time

Job summary

Milestone Technologies seeks a Data Center Technician III (L3) to oversee overnight data center operations, troubleshoot complex issues, and mentor L1/L2 staff in a production environment.

You will manage hardware, storage, GPU, and network deployments, coordinate maintenance activities, and collaborate with engineering to implement reliability improvements while ensuring SLA adherence.

Qualifications

• 5+ years of experience supporting enterprise data center operations or critical infrastructure environments.
• Advanced experience troubleshooting server, storage, GPU, and network hardware.
• Proven experience leading deployments, migrations, and infrastructure projects.
• Strong understanding of data center power, cooling, and operational best practices.
• Experience managing high-priority incidents and major outage responses.
• Ability to work independently and make critical decisions with minimal supervision.
• Strong verbal and written communication skills.
• Demonstrated leadership and mentoring experience.

Responsibilities

• Serve as the primary technical lead during overnight operations.
• Oversee daily data center activities to ensure operational continuity and SLA compliance.
• Coordinate and execute complex maintenance activities and infrastructure changes.
• Lead incident response efforts during service-impacting events.
• Ensure adherence to operational standards, procedures, and best practices.
• Lead large-scale server, storage, GPU, and network deployment projects.
• Design and oversee rack layouts, power distribution planning, and cabling strategies.
• Validate infrastructure readiness prior to production deployment.
• Coordinate server migrations, hardware refreshes, and data center expansion initiatives.
• Perform advanced hardware installations and configuration activities.
• Troubleshoot and resolve complex hardware, storage, networking, and infrastructure issues.
• Perform root cause analysis for recurring incidents and major outages.
• Provide Tier 3 escalation support for operational and technical issues.
• Coordinate vendor support engagements and hardware warranty replacements.
• Develop corrective and preventive action plans to improve reliability and reduce recurring failures.
• Support GPU-based systems, AI environments, and high-density compute infrastructure.
• Diagnose GPU, accelerator, and specialized compute hardware failures.
• Coordinate large-scale hardware replacement programs and platform upgrades.
• Assist engineering teams with performance validations and infrastructure testing.
• Develop and maintain operational procedures, runbooks, and troubleshooting guides.
• Ensure accurate documentation of incidents, maintenance activities, and infrastructure changes.
• Review operational metrics and identify opportunities for efficiency improvements.
• Drive process standardization and continuous improvement initiatives.
• Provide technical leadership for L1 and L2 Data Center Technicians.
• Mentor junior technicians on troubleshooting methodologies and operational best practices.
• Assist in onboarding, training, and development of team members.
• Act as a point of contact between operations, engineering, project management, and vendor teams.
• Support workforce planning and shift handoffs to ensure operational continuity.
• Support power, cooling, environmental monitoring, and facility-related systems.
• Perform capacity planning reviews for racks, power utilization, and infrastructure growth.
• Validate compliance with safety, security, and operational requirements.
• Assist with disaster recovery, business continuity, and critical infrastructure planning.

Job description

Milestone Technologies seeks a Data Center Technician III (L3) to oversee overnight data center operations, troubleshoot complex issues, and mentor L1/L2 staff in a production environment.

You will manage hardware, storage, GPU, and network deployments, coordinate maintenance activities, and collaborate with engineering to implement reliability improvements while ensuring SLA adherence.