Sr. Data Center Technician L3

Sr. Data Center Technician L3

The Sr. 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 within the data center, providing subject matter expertise across compute, accelerators, networking, and supporting infrastructure platforms.

The Data Center Technician L3 is expected to independently diagnose and resolve complex hardware issues, execute advanced repair procedures, support commissioning and deployment activities, and provide technical guidance to junior personnel. The role serves as a primary escalation point for technical issues and works closely with customer engineering teams, OEM partners, network teams, and site leadership to maintain operational excellence.

This position is critical to maintaining infrastructure availability, reducing repair times, improving deployment quality, and supporting the reliability of mission-critical AI computing environments.

Minimum Qualifications

• 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 Data Center Technician L3 serves as a senior technical resource responsible for driving operational reliability, accelerating problem resolution, mentoring technical personnel, and ensuring the successful execution of customer-directed operational activities.

This position 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). Any offer, assignment, or continued access to controlled items is contingent upon the company's determination that the individual is legally authorized to access such items or that any required government authorization can be obtained.

Compensation

Estimated Pay Range: Exact compensation and offers of employment are dependent on circumstances of each case and will be determined based on job-related knowledge, skills, experience, licenses or certifications, and location.

Our Commitment to Diversity & Inclusion

At Milestone we strive to create a workplace that reflects the communities we serve and work with, where we all feel empowered to bring our full, authentic selves to work. We know creating a diverse and inclusive culture that champions equity and belonging is not only the right thing to do for our employees but is also critical to our continued success. Milestone Technologies provides equal employment opportunity for all applicants and employees. All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race, color, religion, gender, gender identity, marital status, age, disability, veteran status, sexual orientation, national origin, or any other category protected by applicable federal and state law, or local ordinance. Milestone also makes reasonable accommodations for disabled applicants and employees. We welcome the unique background, culture, experiences, knowledge, innovation, self-expression and perspectives you can bring to our global community. Our recruitment team is looking forward to meeting you.