Sr. Engineer – Critical Facilities

Job Overview

This role supports a highly dynamic lab environment responsible for the assurance, development, and lifecycle management of network infrastructure technologies. The lab operates as a critical testing ground where platforms and services are validated, deployed, and evolved to support the broader network experience.

Job Responsibilities

• Conduct daily site walks to review and QA ongoing tickets (maintenance, break/fix, customer projects), confirming vendor and customer needs are fully met.
• Direct and manage vendors for upgrades and Operations-initiated projects, ensuring quality, safety, and adherence to scope, schedule, and budget.
• Maintain vigilant safety awareness in a complex, high-risk environment with critical infrastructure and diverse occupants.
• Identify, troubleshoot, and drive resolution for tactical issues discovered during walks or reported by customers, seeing them through to final solution.
• Participate in construction and project meetings, collaborating as both service provider and customer to ensure Operational and critical facility requirements are represented.
• Share in an on-call rotation with a teammate to provide 24x7 emergency response coverage for facility-impacting events.
• Oversee day-to-day operation of facility infrastructure in close collaboration with vendors, maintaining resilience and performance targets.
• Produce routine, periodic, and ad hoc reports as requested (operations, incidents, capacity, risk, etc.).
• Apply strong budget awareness to maintenance, projects, and recommendations, dynamically balancing cost, risk, and customer need.
• Dedicate at least 20% of your time to “moving the bar forward” through continuous improvement, innovation, and initiatives that increase resiliency, efficiency, and customer experience.

Education and Work Experience

• Bachelor's Degree plus 3 years of related work experience OR advanced degree with 1 year of related work experience OR combination of education and experience deemed equivalent (Required)
• Acceptable areas of study include Engineering, facilities, or related field (Preferred)
• 4-7 years' Experience in mechanical/HVAC, electrical, or a combination of the two. (Preferred)
• 4-7 years' Experience in data center facilities operations, working with equipment mentioned above, preferably in the telecommunications industry. (Preferred)
• 4-7 year's Experience managing vendor work and quality control. (Preferred)
• 4–7 years of direct experience operating, designing, constructing, maintaining, and managing large-scale production data centers or critical facilities at the enterprise level. (Required)
• Demonstrated engineering leadership across disciplines required to sustain continuous availability (power, cooling, controls, fire/life safety, etc.). (Required)
• Proven experience in critical facility operations and construction support, including vendor management, maintenance programs, fault analysis, and emergency response. (Required)

Knowledge, Skills and Abilities

• You’ll support and lead operations and construction for large-scale, high-availability critical infrastructure, including:
• AC and DC power systems: UPS, generators, rectifiers, and low-to-medium-voltage distribution supporting megawatt-scale infrastructure and continuous availability.
• Cabinet-level power engineering: Design and support failover and redundancy strategies to achieve zero downtime from utility through end use.
• High-performance, high-density cooling: From rooftop units to critical and contained cooling systems serving both people spaces and high-density infrastructure.
• Building envelope / property management: Oversight in a multi-tenant facility, coordinating building systems and services to meet critical operation’s needs.
• Fire and life safety systems: Pre-action and wet sprinklers, nitrogen sprinklers, gaseous fire suppression systems, and VESDA/pre-alert detection and discharge systems.
• Building Management Systems (BMS) and capacity tools: Monitoring, control, and failover operations for power and environmental systems to sustain emergency operations.
• Physical security systems: Security cameras, badge access, and related controls across the facility.
• Project management: Partner with A/E firms, vendors, contractors, and internal stakeholders—from large-scale consulting engagements to individual product/user requests—to evaluate and implement new technologies and critical systems changes.

Soft Skills

• Conceptualize and co-design solutions with customers, solving facility-related challenges in a development environment with constant demand for innovation and collaboration.
• Support a wide variety of needs—from infrastructure for radios, devices, non-standard equipment, and lab configurations to both temporary and permanent solutions.
• Listen deeply to customers, translate feedback into clear, actionable solutions, and pick up cues that help you design approaches tailored to tactical priorities.
• Work to “future-proof” every project as much as possible within priority, schedule, and budget constraints, recognizing the pace of change in lab environments.
• Manage multiple priorities and dynamic customer demands while appropriately balancing facility risk, particularly in a lab setting that can be more variable than a traditional hardened facility.
• Communicate effectively at all levels of leadership and engineering, translating complex technical issues and contributing constructively in each forum.
• Work effectively with an extremely culturally diverse customer base, actively supporting and modeling T-Mobile’s Diversity, Equity & Inclusion principles in how you collaborate and make decisions.