Facilities Mechanical Engineer (Mission-Critical Infrastructure)

We are seeking an experienced Facilities Mechanical Engineer to lead the mechanical design and integration for large-scale, high-complexity industrial facilities. You will be responsible for the design of robust utility and infrastructure systems that support mission-critical manufacturing, testing, and development operations. This is a fast-paced role for an engineer who thrives on “the hard stuff”-retrofitting existing complex facilities, integrating new high-capacity equipment, and solving the unique mechanical challenges that arise in advanced production environments. You will partner with stakeholders, multidisciplinary engineering teams, and contractors to bring design concepts through construction and final commissioning., Mechanical Design & Engineering System Design: Design and specify integrated mechanical systems, including HVAC, hydronic loops, high-purity process piping, specialized exhaust, plumbing, and fire protection. Infrastructure Upgrades: Lead the design for facility retrofits and equipment expansions. Perform complex engineering calculations, system analysis, and component selection to meet rigorous operational requirements. Utility Integration: Develop comprehensive utility requirement packages in collaboration with equipment manufacturers and facility stakeholders. Multidisciplinary Coordination: Act as a technical lead within multidisciplinary teams, ensuring mechanical designs are seamlessly integrated with electrical, structural, and architectural systems.

Project & Construction Support Technical Documentation: Produce detailed construction documents, installation packages, and engineering reports. Lifecycle Support: Interface directly with clients, contractors, and project owners from conceptual design through project closeout. Field Engineering: Provide construction-phase support, including the technical review of RFIs, submittals, and the resolution of field-related engineering issues. Compliance: Ensure all designs comply with applicable codes, safety standards, and project-specific technical requirements.

Education: Bachelor’s degree in Mechanical Engineering from an ABET-accredited university. Credentialing: Active Engineer-in-Training (EIT) certification is required; candidate must be actively pursuing Professional Engineer (PE) licensure. Experience Baseline: Minimum of three (3) years of experience applying mechanical facilities engineering principles in high-complexity industrial or commercial environments. Technical Proficiency: Proven track record in HVAC, hydronic systems, process piping, and industrial exhaust/infrastructure.

Preferred Attributes Hands-on field experience within a large-scale industrial facility. Technical proficiency with AutoCAD and Navisworks (for clash coordination and spatial integration). Excellent analytical and troubleshooting abilities; comfort working in a dynamic, multidisciplinary project environment. Passion for complex building systems and a commitment to engineering excellence.

For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program. _Participation_Poster_ES.pdf

We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.