Senior Mechanical Engineer

Location: Broomfield, CO (Hybrid) Type: Full Time Reports To: VP of Engineering Compensation: $70,000 – $100,000 base + Stock Options (4-year vest) + Full Benefits Travel: Occasional domestic and international travel to manufacturing partners

About PSI

Preservation Systems Inc. (PSI) is a seed-funded food technology company commercializing Modified Atmosphere Packaging (MAP) and vacuum systems that meaningfully extend fresh food shelf life. Our portfolio includes consumer devices (MiniMAP), commercial equipment (MAPStation with FreshPrep), disposable containers (Freshware), and retrofit lids (STOR Tops). We are at a critical point with a consumer product launch, contracted B2B customers, and major brand partnership opportunities — your fingerprints will be on our success.

The Role

We're hiring a Senior Mechanical Engineer to work directly under our VP of Engineering as the engineering team's first dedicated technical hire. This is a sleeves-rolled-up, prototype-in-hand, test-data-on-your-desk kind of role. You'll be doing real engineering every day: designing components, running tests, iterating on seal systems, reviewing supplier drawings, and solving problems across our full product portfolio. You'll be on calls with international suppliers, reviewing tooling samples, and pushing back on drawings that aren't right.

The right person is early enough in their career to be genuinely hungry to learn and humble enough to know how much they don't know, but experienced enough to take a problem from "we need to figure this out" to "here's what the data says" without hand-holding. Engineering is a lifelong craft. We want someone who believes that and acts like it.

What You'll Own

Hands-On Engineering Component and subsystem design for consumer and commercial products. Tolerance analysis, material selection, prototyping, and testing. Seal system development and validation across container lines. Drawing packages and revision control.

Testing and Validation Design and execute test protocols for leak testing, gas flushing, vacuum performance, and seal integrity. Collect, organize, and present test data that drives decisions. Support DFMEA and design review processes.

Manufacturing Support Work directly with domestic and international manufacturing partners on DFM reviews, first article inspections, and tooling validation. Travel to supplier facilities as needed. Collaborate with operations on production readiness.

Qualifications

• 3–8 years of hands-on mechanical product development experience with supplier-facing responsibilities
• 1+ year working with injection molding, silicone, or overmolded components
• Has personally built and tested physical prototypes, not just CAD models
• SolidWorks proficiency (PDM experience is a plus)
• Comfortable with GD&T and reading/creating engineering drawings
• Familiarity with test equipment: calipers, force gauges, pressure/vacuum instrumentation
• Direct experience working with suppliers on tooling, first articles, or production issues — international supplier experience (especially Asia) is strongly preferred

Nice to Have

• Food contact products or packaging experience
• Seal system design (gaskets, O-rings, silicone overmolding)
• Experience with Asian contract manufacturers
• Startup or small-team environment experience

Who You Are

• Humble and self-aware
• Relentlessly thorough
• Builds things, not slide decks
• Asks why until they understand
• Takes ownership without being asked