Custom Mechanical Systems, Corp. is a construction subcontractor that specializes in mechanical system installation and project estimating for federal government contracts. The company provides procurement support, bid development, and on‑site installation services across multiple locations, ensuring compliance with federal regulations and delivering high‑quality mechanical solutions.
Open Positions
Skilled Laborer
High school diploma required. 2-3 years mechanical construction experience, specifically HVAC & pipe work. Must be able to read blueprints and use hand tools
Superintendent - DoD Installations
Associate’s degree in construction. 3+ years of experience. High school diploma with similar experience. Proficiency in Microsoft Office and construction practice knowledge
Project Coordinator
Bachelor’s degree in related field or equivalent 3-4 years experience. Proficiency in Microsoft Office, valid driver's license and insurable work history
Quality Control Manager - Guam
Bachelor's degree in related field and experience as a QC Manager or experienced engineer. Must be competent in QC and Construction Management process. Must possess current or recent CQM certification
Quality Control Manager/Specialist (POL)
5+ years DoD POL management, 3+ years on-site experience as a POL Quality Control Specialist, and Associate's degree or equivalent. Must be eligible for USG facility access and hold current certifications
Quality Control Manager - DoD Installations
Bachelor's degree or associate's degree with equivalent experience. 2-4 years of project experience or 4-6 years related experience. Completion of US Army Corps of Engineers course.
Journeyman Welder
Must be proficient in TIG, Stick, and X-ray welding. Operating heavy equipment & working safely are essential. Knowledge of welding processes (shielded metal arc, etc.) is needed
Journeymen Pipefitter
High school diploma, 8+ yrs pipefitter experience, blueprint reading skills and organization required
Project Manager- DoD Installations
Bachelor’s degree in Construction Management or related field. 2+ years in a project management role. Valid driver's license & insurable under company policy
Project Manager - Mechanical Construction
Bachelor's degree in a related field. 3-7 yrs experience as Assistant Project Manager, or 7-9 yrs exp. outside experience. Proficiency in Microsoft 365, Primavera P6, and construction practices
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