Journeyman HVAC

Amentum is looking for an experienced HVAC Mechanic to join our team in Springfield, VA. The Heating, Ventilation, and Air Conditioning Mechanic installs, modifies, and repairs refrigeration - hermetic, semi-hermetic, mechanical, screw, scroll and centrifugal units to 1100 tons; air conditioning, ventilation; reverse osmosis systems, computer rooms; process coolers; ice machines; evaporative cooling; air compressing and related control systems, including pneumatic, DDC, and building control systems equipment. Maintains and repairs stationary steam boilers and boiler house auxiliaries by performing the following duties.

Must possess and maintain an active TS/SCI clearance.

Responsibilities:

• •Diagnoses, troubleshoots, maintains, and repairs Honeywell Enterprise Building Integrator (EBI) Direct Digital Control (DDC) system systems and equipment as well as related mechanical equipment and systems, such as HVAC and utilities.
• •Assures calibration and maintenance of instrumentation, equipment, and controls for optimum performance.
• •Installs, repairs, and maintains machinery and mechanical equipment such as motors, engines, pumps, belts, fans, air handling units, VAV and fan powered boxes.
• •Maintains the safe operation of systems including electronic/pneumatic environmental controls, oil/gas fired water tube boilers, and auxiliary equipment such as various types of pumps, de-aerating tanks, air compressor blowers, etc.
• •Must be able to quickly become familiar with the design and layout of the facilities; to learn the locations of installed environmental control and monitoring systems / equipment; and understand operating procedures relating to environmental controls.
• •Site Subject Matter Expert (SME) for recommendations of site operations procedures for equipment and recommends facilities reliability improvements.
• •Analyzes and resolves work problems or assists maintenance workers in solving work problems.
• •Demonstrates attention to detail, good comprehensive and analytical skills, and excellent organizational skills.
• •Operates a variety of equipment such as hand tools, computers, and diagnostic hardware to perform work.
• •This person performs difficult installation tasks involving assembly, testing, calibrating, and adjusting of temperature control and environmental control systems such as air conditioning plants, air environmental control systems, air distribution systems and complex dual equipment cooling installations, specialized refrigerated warehouses and facilities, and evaporative mechanical ventilation, and dehumidification systems.
• •Installs new or repaired component and performs complex modifications of systems and components in accordance with applicable electrical publications and directives and will maintain and repair specialized laboratory equipment such as fume hoods, de-ionized water systems, bio-clean systems, vacuum systems, cascade refrigeration systems, and laboratory sinks.
• •This mechanic may perform complex repair of systems component such as compressors, condensers, heat pumps regulators, fluid and refrigerant gas lines valves, meters, gages, thermostats, pumps, mechanical linkage, and electrical sensing, switching, and controlling devices including pneumatic controls, variable speed drives, digital controlled devices, electronic, hydraulic heating and cooling and economizer systems.

Experience and Qualifications:

• •High School diploma or equivalent.
• •Formal or informal education or training which ensures the ability to read and write at a

level necessary for successful job performance.

• •Minimum of five years of HVAC Mechanic experience required.
• •Ability to lift 45 lbs.
• •Computer Skills- Microsoft Office Suite (Word, Excel, etc.) preferred.

Compensation Details:

US $49.12 per hour

Original Posting:

05/07/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters .