Esox Engineering, LLC · 1 day ago
Senior/Lead Product Development Engineer (Mechanical)
Grand Haven, MI
Full-time
Onsite
Senior Level, Lead/Staff
8+ years expEsox Engineering, LLC is a trusted product R&D consulting firm known for building practical solutions in medical devices, furniture, and consumer products. They are seeking a Senior/Lead Product Development Engineer who will own technical decisions and product viability on client programs, mentor early-career engineers, and ensure high-quality design and analysis.
Mechanical Or Industrial Engineering
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)
Qualification
Required
8+ years in mechanical product development (medical/furniture/consumer preferred)
BS in Mechanical Engineering (required)
PTC Creo 8.0–10.0, with depth (must)
GD&T and tolerance stack analysis (must); familiarity with ASME Y14.5
Proven decision-making, follow-through, and technical depth; excellent verbal/written communication
Portfolio ready: CAD screenshots, drawings (GD&T), tolerance stacks, FEA summaries, DFM notes, prototype/test photos
Preferred
Windchill PDM; Ansys hands-on; complex assemblies/family tables; DOE/test methods; Verification & Validation experience; PE or MSME
Benefits
Health/dental/vision
SIMPLE IRA (3% match)
10 holidays + 15 PTO
Discretionary bonus
Limited relocation for the ideal candidate
Company
Esox Engineering, LLC
What’s different about Esox Engineering? Sure, we’re all about the product idea, but our mission is greater.
2-10 employees
Funding
Current Stage
Early StageCompany data provided by crunchbase