About this role
Job Description
We are seeking a skilled and experienced Mechanical and HVAC Systems Technician to install, maintain, troubleshoot, and repair mechanical and HVAC systems supporting commercial and industrial facilities. This role focuses on ensuring the reliable operation of building mechanical infrastructure, including piping, heating, cooling, ventilation, and associated support systems.
The ideal candidate will have hands-on experience with mechanical and HVAC equipment, strong diagnostic skills, and the ability to interpret technical documentation while working in compliance with safety, quality, and regulatory standards.
Primary Responsibilities
Install, maintain, troubleshoot, and repair mechanical and HVAC systems, including heating, cooling, ventilation, and associated support equipment.
Fabricate, install, and repair mechanical piping systems carrying water, steam, chilled water, hot water, air, gas, and other process fluids.
Work with piping materials such as carbon steel, stainless steel, copper, plastics, and specialty piping systems.
Inspect and service HVAC equipment including air handling units (AHUs), fan coil units, pumps, compressors, heat exchangers, valves, and dampers.
Perform preventive, predictive, and corrective maintenance to ensure system efficiency, reliability, and longevity.
Troubleshoot mechanical and HVAC system issues such as leaks, airflow problems, pressure imbalances, temperature control failures, vibration, and equipment malfunctions.
Assemble piping and mechanical systems using welding, brazing, soldering, threading, grooving, and mechanical joining techniques.
Install, test, and commission mechanical service systems including HVAC, chilled water, steam, compressed air, and fire protection systems.
Conduct pressure testing, flushing, balancing support, and system verification to ensure performance and compliance with specifications.
Read and interpret mechanical drawings, piping isometrics, P&IDs, control diagrams, and building plans.
Coordinate maintenance activities, installations, and shutdowns with facilities teams, contractors, and other trades.
Maintain accurate maintenance records, inspection reports, and documentation using CMMS or other tracking systems.
Ensure all work complies with applicable mechanical codes, building standards, safety regulations, and internal procedures.
Basic Qualifications
Active TS/SCI with Polygraph clearance is required
High school diploma or equivalent.
2–4 years of hands-on experience working with mechanical and HVAC systems in commercial, industrial, or facilities environments.
Completion of a technical training program, apprenticeship, or equivalent experience in HVAC, mechanical systems, or industrial maintenance.
Working knowledge of HVAC equipment, piping systems, pumps, compressors, and mechanical components.
Proficiency using mechanical diagnostic tools such as pressure gauges, temperature probes, airflow meters, and vibration monitoring tools.
Ability to safely use hand tools, power tools, and mechanical shop equipment.
Understanding of heating, cooling, ventilation, hydraulics, pneumatics, and preventive maintenance practices.
Ability to work independently and troubleshoot moderately complex mechanical and HVAC system issues.
Preferred Qualifications
Associate degree, trade school certification, or vocational training in HVAC, Mechanical Systems, or a related field.
5+ years of experience maintaining mechanical and HVAC systems in industrial or mission-critical facilities.
HVAC certifications such as EPA 608 or equivalent mechanical trade certifications.
Experience with advanced troubleshooting, root cause analysis, and system optimization.
Familiarity with building automation systems (BAS) and HVAC controls interfaces.
Experience with CMMS platforms, maintenance planning, and work coordination.
Knowledge of applicable mechanical codes, energy efficiency standards, and building regulations.
Strong safety awareness with knowledge of OSHA or equivalent regulatory standards.
EC-DAS
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:
January 28, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range -The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Other facts
About Leidos
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. The company's global workforce of 48,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $15.4 billion for the fiscal year ended December 29, 2023.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
What you'll do
- The technician will install, maintain, troubleshoot, and repair mechanical and HVAC systems, including heating, cooling, and ventilation, while fabricating and installing various mechanical piping systems.
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