Senior Mechanical Engineer

About UsPowerUP Energy Technologies is a dynamic and innovative tech company based in Tallinn, Estonia. We are dedicated to tackling the global climate crisis by providing clean energy solutions through cutting-edge hydrogen technology. We are an international team of creative, collaborative, and practical experts who are encouraged to think outside the box when taking on big challenges.Read more about us: https://www.powerup-tech.com/ Facebook: @powerupenergytechnologies and Instagram: @powerupenergytechRole OverviewWe are seeking a Senior Mechanical Engineer to take a key role in the development and manufacturability of our cutting-edge hydrogen generators and other state-of-the-art products. This position involves hands-on mechanical design, deep involvement in the development process with a focus on design for manufacturing, and close collaboration with multidisciplinary teams. The ideal candidate brings strong technical expertise, solid experience in developing products for fuel cell prototypes or in similiar fields of heat exchanger prototypes, automotive applications. This role combines hands-on expertise with strong technical development and manufacturing knowledge to ensure effective execution of product development. This is a full-time, onsite position in Tallinn, Estonia. The working language is English.Key ResponsibilitiesResponsible for the mechanical architecture and detailed design for complex gas system and hydrogen products: enclosures, mechanisms, mounting strategies, thermal management, sealing, coolant and electronic materials, and EMC-aware mechanical layout.Conduct and contribute to Failure Modes and Effects Analysis (FMEA) to identify design risks and opportunities for improvement in design of generators.Select materials and processes (injection molding, sheet metal, die casting, machining, 3D printing) aligned with durability, regulatory, and supply-chain constraints.Optimize designs for manufacturability, focusing on Bill of material cost and cost-effectiveness.Plan and execute Validation and Verification for mechanical systems: test strategies, protocols, fixtures, and gas systems; support environmental testing (vibration, shock, thermal). Ensure stable mechanical design for transportation and lifting, including center-of-gravity control and structural integrityCollaborate closely with fuel cell engineers, electrical engineers, software developers, system integration engineers and production teams to ensure integration of mechanical systems.Collaborate with suppliers and manufacturing partners to evaluate design feasibility, resolve technical challenges, and facilitate scalable production.Essential Skills/Experience/RequirementsBachelor’s or Master’s degree in Mechanical Engineering or a related field.5+ years of relevant work experience in mechanical engineering and manufacturing environments.Proven experience in design for manufacturing (DFM) and its application in product development is required.Proficiency with CAD tools (e.g., SolidWorks, AutoCAD, CATIA).Solid understanding of mechanical design principles, materials, and various manufacturing techniques.Proven ability to manage multiple tasks and projects independently and drive results under deadlines.Practical, hands-on skills in assembly, prototyping, and mechanical troubleshooting.Excellent communication and collaboration abilities.Fluent in written and spoken English.Advantageous Skills/ExperienceExperience working with fuel cells, heat exchangers, electrolysers, or battery technologies.Familiarity with mechanical and thermal FEA simulations.A strong interest in sustainable energy technologies.Company OffersAt PowerUP, you will have a unique opportunity to join a groundbreaking company and contribute to the emergence of sustainable energy technology. You will work in a collaborative environment and have great opportunities for professional growth in a friendly multinational team.