Data Center Technician L3

Milestone Technologies, Inc.; Atlanta (GA); On-site; USD 70,000 - 100,000; Full time

Job summary

Milestone Technologies, Inc. is seeking a Data Center Technician III to install, troubleshoot, and maintain critical data center infrastructure. You will lead hardware diagnostics, support GPU and high-density compute environments, and coordinate with vendors for RMAs.

This is a senior-level technical role requiring hands-on expertise in server hardware, storage, networking, and Linux. The role emphasizes on-site operations, change management, and mentoring junior technicians.

Qualifications

• 5+ years of experience in data center, infrastructure, or hardware support.
• Rack-and-stack installations and structured cabling experience.
• Strong server hardware troubleshooting and repair skills.
• Experience supporting enterprise storage and networking infrastructure.
• Familiarity with Linux operating systems and command-line tools.
• Knowledge of data center power, cooling, and operation best practices.
• Experience with ticketing and change management platforms (ServiceNow preferred).
• Ability to lift and move equipment up to 50 lbs in data center environments.

Responsibilities

• Install, rack, stack, cable, and commission servers, storage, network devices, and infrastructure.
• Perform advanced hardware diagnostics, troubleshooting, and component replacement.
• Execute break/fix activities on production systems within SLAs.
• Support data center migrations, expansions, and lifecycle projects.
• Maintain asset inventories, rack elevation diagrams, and deployment docs.

Skills

Linux administration

Server hardware troubleshooting

Rack & stack

Storage & networking

ServiceNow ticketing

On-call support

Tools

VMware vCenter

iLO / iDRAC / BMC

Kubernetes

Job description

Company Overview

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. Milestone is focused on building an employee-first, performance-based culture and for over 25 years, we have a demonstrated history of supporting category-defining enterprise clients that are growing ahead of the market. The company specializes in providing solutions across Application Services and Consulting, Digital Product Engineering, Digital Workplace Services, Private Cloud Services, AI/Automation, and ServiceNow. Milestone culture is built to provide a collaborative, inclusive environment that supports employees and empowers them to reach their full potential.

Our seasoned professionals deliver services based on Milestone’s best practices and service delivery framework. By leveraging our vast knowledge base to execute initiatives, we deliver both short-term and long-term value to our clients and apply continuous service improvement to deliver transformational benefits to IT. With Intelligent Automation, Milestone helps businesses further accelerate their IT transformation. The result is a sharper focus on business objectives and a dramatic improvement in employee productivity. Through our key technology partnerships and our people-first approach, Milestone continues to deliver industry-leading innovation to our clients. With more than 3,000 employees serving over 200 companies worldwide, we are following our mission of revolutionizing the way IT is deployed.

Job Overview

The Data Center Technician III (L3) is a senior-level technical resource responsible for the installation, maintenance, troubleshooting, and repair of critical data center infrastructure. This role provides advanced support for server, storage, networking, and GPU-based platforms while serving as an escalation point for complex technical issues. The L3 Technician works independently, leads operational activities, supports project deployments, and mentors junior technicians.

Key Responsibilities

Data Center Operations

• Install, rack, stack, cable, and commission servers, storage systems, network devices, and supporting infrastructure.
• Perform advanced hardware diagnostics, troubleshooting, and component replacement.
• Execute break/fix activities on production systems while adhering to established SLAs.
• Support data center migrations, expansions, and hardware lifecycle projects.
• Perform server decommissioning, asset recovery, and secure hardware disposal processes.
• Maintain accurate rack elevation diagrams, asset inventories, and deployment documentation.

Hardware & Infrastructure Support

• Troubleshoot and replace components including: CPUs GPUs Memory Power supplies Motherboards NICs Storage devices Switches Cabling infrastructure
• Support high-density compute, AI/ML, and GPU cluster environments.
• Validate hardware health using monitoring and diagnostic tools.
• Coordinate RMAs and vendor support engagements when required.

Network & Storage Support

• Install and troubleshoot copper and fiber optic cabling.
• Support ethernet, Fibre Channel, and InfiniBand environments.
• Verify network connectivity and perform basic switch troubleshooting.
• Assist with SAN, NAS, and storage cluster deployments.
• Perform cable audits, trace work, labeling, and documentation updates.

Systems & Remote Management

• Utilize remote management tools such as iLO, iDRAC, BMC, and KVM solutions.
• Support Linux and Windows server environments.
• Execute firmware, BIOS, and hardware upgrades.
• Support operating system installations and recovery activities as needed.
• Assist with cluster validation and infrastructure readiness testing.

Operational Excellence

• Respond to incidents and escalations within established service levels.
• Lead maintenance activities and change management implementations.
• Develop and maintain technical documentation and standard operating procedures.
• Participate in on-call and after-hours maintenance activities as required.
• Mentor L1 and L2 technicians and provide technical guidance.

Required Qualifications

• 5+ years of experience in a data center, infrastructure, or hardware support environment.
• Experience with rack-and-stack installations and structured cabling.
• Strong server hardware troubleshooting and repair skills.
• Experience supporting enterprise storage and networking infrastructure.
• Knowledge of Linux operating systems and command-line tools.
• Familiarity with data center power, cooling, and operational best practices.
• Experience with ticketing and change management platforms (ServiceNow preferred).
• Ability to lift and move equipment up to 50 lbs and work in raised-floor or data center environments.

Preferred Qualifications

• Experience supporting GPU-based infrastructure (NVIDIA preferred).
• Experience with Kubernetes, virtualization, or cluster environments.
• Knowledge of AI/ML or HPC infrastructure.
• Experience with Fibre Channel, SAN, and InfiniBand technologies.
• Knowledge of scripting or automation tools such as Python, Bash, or PowerShell.
• Vendor certifications from Dell, HPE, Cisco, NVIDIA, VMware, or equivalent.

Technical Skills

• Linux Administration
• Server Hardware Diagnostics
• Rack & Stack Operations
• Copper and Fiber Cabling
• GPU Installation & Support
• VMware/vCenter
• SAN Storage