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HVAC Master Technician

Global; Diego Garcia; Diego Garcia,
Full Time On-site

Summary

Job Description

Amentum, a global leader in advanced engineering, technical, and professional services serving the US government, allies, and critical infrastructure sectors, is seeking an HVAC Master Technician to support a unique US Navy program based on the island of Diego Garcia.

JOB RESPONSIBILITIES

The HVAC Master Technician , designated as key personnel, will perform and support inspections, testing, maintenance, and repairs on HVAC systems, ensuring optimal system performance and operation. Responsibilities include, but are not limited to:

  • Performing maintenance and repair of chilled water and Direct Expansion (DX) type centralized air conditioning plant equipment .
  • Supporting Variable Air Volume (VAV) and Constant Volume type air distribution systems with capacities of 100 tons or greater .
  • Conducting inspections, fault diagnosis, testing, and preventive maintenance for HVAC systems.
  • Performing troubleshooting and implementing repairs to ensure the effective and safe operation of HVAC systems in compliance with established guidelines and standards.
  • Assisting with planning and scheduling maintenance activities for HVAC systems.
  • Documenting inspections, test results, maintenance, and repairs in compliance with regulatory and organizational requirements.
  • Supervising and providing technical guidance to team members as needed, ensuring work is performed efficiently and safely.
  • Ensuring adherence to environmental safety regulations and safe refrigerant handling practices.

MINIMUM REQUIREMENTS

  • A valid U.S. HVAC Master License obtained from any U.S. state or territory.
  • At least five (5) years of experience in the maintenance and repair of chilled water and DX-type centralized air conditioning plant equipment with ducted VAV and constant volume air distribution systems, supporting a minimum capacity of 100 tons .
  • Completion of the Refrigeration and Airconditioning Servicing National Certification Level III (RAC NC III) course or its equivalent.
  • Demonstrated knowledge and experience in troubleshooting, inspecting, testing, and repairing large-scale HVAC systems.
  • Familiarity with industry standards and regulations related to HVAC systems and refrigerants.
  • High school diploma or equivalent.
  • Must be in possession of a valid passport and be able to travel internationally.
  • Passport should be valid for a minimum of one (1) year or more at the time of hiring.
  • Ability to successfully pass contract medical requirements and maintain requirements for the duration of deployment.

PREFERRED QUALIFICATIONS:

  • Advanced certifications in HVAC systems, refrigerants, or energy efficiency are preferred.
  • Prior experience in an austere OCONUS (Outside the Continental United States) environment with a multi-national workforce is preferred.
  • Valid country driver’s license and passport.
  • Strong understanding of environmental safety and compliance requirements relating to refrigerants and HVAC system operations.
  • Excellent troubleshooting, organizational, and time management skills.

OTHER RESPONSIBILITIES

  • Safety : Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy-aid responsibilities, participating in emergency response tasks, and serving on safety committees and teams.
  • Quality : Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand their Quality Management and Customer Satisfaction responsibilities.
  • Procedure Compliance : Each employee must read, understand, and implement the general and specific operational, safety, quality, and environmental requirements of all plans, procedures, and policies pertaining to the job.

About Amentum

Amentum

Amentum is one of the largest government services and engineering companies supporting the U.S. military, intelligence community, and federal agencies. Headquartered in Virginia with more than 50,000 employees worldwide, Amentum delivers mission-critical support across defense, cybersecurity, engineering, logistics, intelligence, aviation, nuclear, and space operations. The company plays a major role in helping government agencies solve complex national security and infrastructure challenges.

For job seekers, Amentum offers a wide variety of career opportunities across engineering, cybersecurity, intelligence, logistics, IT, aviation maintenance, program management, and cleared government support roles. The company is especially attractive to veterans, transitioning military personnel, and security-cleared professionals looking to continue supporting national security missions while building long-term career stability. Amentum also has a strong reputation for career mobility, education support, and mission-focused work across hundreds of federal programs.

Unlike many companies focused on a single niche, Amentum supports a broad range of high-impact missions—from military readiness and intelligence operations to NASA programs, cyber modernization, and critical infrastructure support. Employees often work on programs that directly support the Department of Defense, intelligence agencies, and federal civilian missions, creating opportunities to build diverse experience while contributing to meaningful national security outcomes.

As government investment continues to grow in cyber, space, engineering, and mission modernization, Amentum remains one of the strongest employers in the government contracting sector. For professionals seeking a stable, mission-driven career with opportunities for advancement, technical growth, and meaningful impact, Amentum continues to stand out as a top employer in defense and federal services.

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