Mechanical Design Engineer - Power Conversion Unit W/M

INOCEL is a French company in the industrial energy transition, specialized in the design and commercialization of modular, free‑emission hydrogen generators. Our solutions deliver continuous and reliable power to critical industries - from data centers to construction sites and remote locations - without compromising performance.

Backed by more than 25 years of research on hydrogen fuel cells, we offer modular generators for both stationary and mobile applications: GEN‑Z 300, GEN‑Z 600, and GEN‑Z 1300. Beyond equipment, INOCEL provides turnkey solutions, including integration, maintenance, and advanced monitoring to ensure reliability, performance, and durability.

With industrial production in Belfort and R&D centers in Grenoble and Cannes, INOCEL combines innovation, technological expertise, and positive environmental impact. Our scalable and silent solutions enable partners worldwide to transition toward a zero‑carbon future, reinforcing our international vision and our role as a global leader in hydrogen energy.

Today, we are strengthening our expertise and recruiting a Mechanical Design Engineer W/M

About The Role

As part of our R&D Engineering team, you will contribute to the design and development of the Power Conversion Unit (PCU) for next-generation Fuel Cell systems.

The PCU is a complex mechatronic system integrating energy storage, power electronics, cooling systems, structural components, electrical interfaces, instrumentation, and control hardware into a robust stationary power generation solution.

We are looking for a Mechanical Design Engineer with experience in the development of complex industrial equipment , particularly in generator sets (gensets), stationary power systems, industrial machinery, power conversion equipment, or similar electromechanical products .

Working in a multidisciplinary environment, you will collaborate closely with electrical, thermal, controls, manufacturing, testing, procurement, and quality teams to deliver reliable, manufacturable, and cost-effective products from concept through industrialization.

Key Responsibilities

• Design and develop the mechanical architecture of the Power Conversion Unit throughout the product development lifecycle.
• Create 3D CAD models, manufacturing drawings, Bills of Materials (BOM), and engineering documentation.
• Design structural components, sheet metal assemblies, enclosures, cooling systems, mounting structures, cable management, and mechanical interfaces.
• Ensure seamless mechanical integration with electrical, thermal, and control subsystems.
• Perform mechanical calculations, tolerance stack‑up analyses, and support structural and thermal simulations (FEA).
• Prepare technical specifications, participate in design reviews, and support DFMEA activities.
• Collaborate with suppliers on component development, technical validation, and manufacturability.
• Support prototype assembly, testing, root‑cause analysis, and implementation of design improvements.
• Apply Design for Manufacturing (DFM) and Design for Assembly (DFA) principles to optimize product quality, cost, and serviceability.

Profile

Education

• Master's degree in Mechanical Engineering, Mechatronics, Product Design, or a related engineering discipline.

Experience

• 4–8 years of experience in mechanical design of complex industrial or electromechanical systems.
• Experience in stationary power generation, gensets, industrial equipment, electrical enclosures, HVAC, rail, marine, off‑highway, or energy systems is highly desirable.
• Experience working in a multidisciplinary product development environment is expected.
• Fuel cell or hydrogen experience is considered a plus.

Technical Skills

• Strong mechanical design and product integration capabilities.
• Proficiency with SolidWorks, CATIA, Creo, or equivalent 3D CAD software.
• Good understanding of sheet metal, welded structures, machined parts, GD&T, tolerance analysis, and manufacturing processes.
• Familiarity with PLM/PDM systems; experience with FEA tools is an advantage.

Personal Skills

• Strong analytical and problem‑solving skills with a hands‑on engineering mindset.
• Autonomous, organized, and proactive, with excellent communication and collaboration abilities.
• Comfortable working in a fast‑paced, innovation‑driven environment.
• Fluent English is required; French is a plus.

What We Offer

• A high‑impact position within a fast - growing company
• A scope of responsibilities that will expand as the company grows
• An ambitious, supportive, and forward‑looking team

Benefits

• Health insurance
• Meal vouchers (€9.48/day)
• Friendly and collaborative work environment

Compensation

• Based on profile and experience