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Esox Engineering, LLC · 3 days ago

Senior/Lead Product Development Engineer (Mechanical)

Grand Haven, MI

Full-time

Onsite

Senior Level, Lead/Staff

8+ years exp

Esox Engineering, LLC is a trusted product R&D consulting firm known for honesty, integrity, and transparency. They are seeking a Senior/Lead Product Development Engineer to own technical decisions and product viability on client programs while mentoring early-career engineers and ensuring high-quality design and analysis.

Mechanical Or Industrial Engineering

Hiring Manager

Ben Edinger, PE

Responsibilities

Lead & ship: Own technical direction, trade-offs, and risk mitigation; deliver 2–3 programs from concept through kickoff (~70% billable utilization target)

Decide with clarity: Approve technical choices (materials, mechanisms, tolerances, manufacturing, etc); coordinate schedule/budget impacts with PM

Mentor & system-build: Elevate early-career engineers; contribute to standards, peer review practice, and broader SOPs (DFM/DFA, tolerance analysis, drawing quality)

Hands-on engineering: PTC Creo 8,9,10 surface modeling (bonus); complex assemblies/family tables (bonus); GD&T and tolerance stacks (must); review FEA (Ansys) for boundary conditions and assumptions

Client-facing: Translate complex decisions simply; support scoping/quotes/updates; represent Esox Engineering in technical reviews

Cross-disciplinary: Collaborate with ID, EE, manufacturing partners; leverage shop resources (3D printers, test rigs, measurement tools, tensile tester, and standard power/hand tools)