Data Center Technician L3

Milestone Technologies is a global IT managed services firm that partners with organizations to scale their technology, infrastructure, and services to drive specific business outcomes such as digital transformation, innovation, and operational agility. With over 25 years of experience, Milestone supports category-defining enterprise clients and specializes in Application Services and Consulting, Digital Product Engineering, Digital Workplace Services, Private Cloud Services, AI/Automation, and ServiceNow. The company fosters a collaborative, inclusive, and employee-first culture, empowering professionals to deliver transformational IT solutions through best practices and continuous improvement.

About the Role

The Data Center Technician L3 serves as a senior technical resource responsible for advanced deployment, diagnostics, break-fix operations, hardware lifecycle management, and operational support within large-scale AI and accelerated computing environments. This role functions as a technical leader, providing subject matter expertise across compute, accelerators, networking, and supporting infrastructure. The position is critical to maintaining infrastructure availability, reducing repair times, improving deployment quality, and supporting the reliability of mission-critical AI computing environments.

Responsibilities

• Lead installation, integration, and deployment activities for servers, accelerator platforms, networking equipment, and supporting infrastructure.
• Validate deployment quality against customer specifications, rack elevations, port maps, and deployment standards.
• Execute and oversee structured cabling activities, including copper and fiber infrastructure deployments.
• Perform deployment audits, acceptance testing, and operational readiness reviews.
• Support commissioning, site expansion, and infrastructure turnover activities.
• Perform advanced troubleshooting and root cause analysis of server, accelerator, storage, and networking hardware failures.
• Execute customer-directed repair procedures and complex hardware diagnostics.
• Perform FRU replacement activities across compute, accelerator, and network platforms.
• Support firmware upgrades, hardware qualification testing, and post-maintenance validation.
• Serve as the technical lead during hardware incidents and escalations, driving rapid restoration of service.
• Support GPU, TPU, accelerator, and high-density compute platforms.
• Execute return-to-service validation and performance verification activities following repairs.
• Assist customer engineering teams with hardware investigations and diagnostics.
• Support hardware qualification, burn-in, and acceptance testing activities.
• Oversee serialized asset tracking and lifecycle management activities.
• Manage complex RMA workflows, including diagnostics, documentation, chain-of-custody, and return processing.
• Validate asset reconciliation and inventory accuracy.
• Support spare parts planning and inventory optimization efforts.
• Support physical-layer network operations, including fiber plant infrastructure, optics replacement, patching, and connectivity validation.
• Troubleshoot cabling, optics, and hardware-related network issues.
• Support OOB (Out-of-Band) management infrastructure and console access systems.
• Execute physical network changes under customer engineering direction.
• Serve as a technical escalation point for Data Center Technicians and operational personnel.
• Provide coaching, mentoring, and technical development support to L1 and L2 technicians.
• Assist with onboarding, training, and qualification programs.
• Lead technical reviews and knowledge-sharing activities.
• Participate in major incident response and restoration efforts.
• Assist site leadership with technical assessments and risk evaluations.
• Support operational readiness reviews and maintenance planning activities.
• Maintain detailed records of diagnostics, repairs, deployments, and validation activities.
• Support development and refinement of technical procedures and work instructions.
• Ensure compliance with customer quality standards and audit requirements.
• Adhere to all site safety, security, and operational procedures.
• Support Environmental Health & Safety (EHS) initiatives and safe work practices.
• Ensure compliance with customer security controls and access requirements.
• Participate in audits, inspections, and operational compliance activities.

Requirements

• High school diploma, GED, or equivalent experience.
• Minimum 5 years of experience supporting data center operations, hardware deployment, or infrastructure support environments.
• Extensive experience troubleshooting and repairing server, storage, and networking hardware.
• Experience executing complex technical procedures with minimal supervision.
• Strong understanding of hardware diagnostics, component replacement, and system validation.
• Demonstrated ability to lead technical activities and mentor junior personnel.

Preferred Qualifications

• Experience supporting hyperscale, AI, HPC, cloud, or enterprise data center environments.
• Experience supporting GPU, TPU, accelerator, or high-density compute infrastructure.
• Familiarity with liquid-cooled computing environments and advanced rack architectures.
• Strong knowledge of structured cabling systems, fiber optics, and physical-layer networking.
• Experience supporting OOB management systems and console infrastructure.
• Familiarity with asset management, inventory control, and RMA processes.
• Vendor certifications or data center certifications preferred.
• Experience working within 24x7 mission-critical operational environments.

Physical Requirements

• Ability to stand and walk for extended periods within active data center environments.
• Ability to lift, carry, push, or move equipment weighing up to 50 pounds.
• Ability to install and service equipment within rack environments.
• Ability to work in confined spaces and elevated work locations when required.
• Ability to work in hot aisle/cold aisle environments and varying operational conditions.

Work Environment

This position operates within a mission-critical data center environment supporting advanced AI and accelerated computing infrastructure. Work includes deployment, diagnostics, maintenance, repair, validation testing, and technical leadership activities involving large-scale compute, networking, and accelerator platforms. The role may require access to hardware, software, technology, or technical data subject to U.S. export control laws, including the Export Administration Regulations (EAR) and, where applicable, the International Traffic in Arms Regulations (ITAR).

Exact compensation and offers of employment are dependent on job-related knowledge, skills, experience, licenses or certifications, and location.