Principal Mechanical Engineer

About Exokinetics Exokinetics is a fast-growing, innovation-driven company developing breakthrough assistive technologies that help people stay mobile, active, and independent. Our flagship product line, the Zeen, enables individuals with mobility challenges to walk, stand, and sit with dignity—without motors or batteries—through elegantly engineered mechanical systems. (gozeen.com) We are a team of inventors, engineers, and builders who thrive on solving meaningful, complex problems. Our work directly improves quality of life for thousands of people, and there is so much more we can do. The Role We are seeking a Principal Mechanical Engineer to lead the design and development of next-generation products from concept through production. This is a high-impact role for a deeply hands-on engineer who thrives in a fast-paced, startup environment and wants to own major portions of the product architecture. You will drive multiple development efforts in parallel, mentor other engineers, and play a key role in shaping both product direction and engineering culture. What You’ll Do Lead end-to-end mechanical system design across multiple product programs Architect mechanisms, structures, and assemblies for complex mechanical and electromechanical systems Own CAD development (SolidWorks) using advanced modeling techniques (top-down, master modeling) Drive prototyping, breadboarding, and iterative development cycles Plan and execute verification and validation testing; analyze and act on results Apply DFMA principles across injection molding, machining, sheet metal, and welded assemblies Collaborate with industrial design, physical therapists and other stakeholders to deliver manufacturable, high-quality user-facing products Interface with manufacturing partners (domestic & international) to transition designs into production Provide technical leadership, mentorship, and design guidance to the engineering team Support product launches, field testing, and continuous product improvement What We’re Looking For Experience & Skills B.S. in Mechanical Engineering 7-10 years of hands-on product development experience (consumer products, medical devices, mobility, or similar preferred) Proven track record of taking products from concept to production Deep expertise in mechanism design, system architecture, and CAD development Strong experience with DFMA across multiple manufacturing processes (injection molding, CNC machining, sheet metal, welding, etc.) High proficiency in SolidWorks and standard engineering tools Strong background in prototyping, testing, and iterative development Comfortable working in a machine shop environment (mills, lathes, fabrication tools) Leadership & Mindset Builder mentality—hands-on, resourceful, and execution-focused Ability to lead complex technical efforts while remaining deeply involved in the details Strong communication skills (verbal, written, and visual/sketching) Collaborator personality with strong interpersonal skills Highly self-motivated with a bias toward action Passion for creating products that make a meaningful difference in people’s lives Why Join Exokinetics Work on products that directly improve mobility and independence and witness meaningful results. Be part of a high-functioning, motivated team, undergoing foundational growth. Own major technical decisions and collaborate on future product direction Build real, physical products—fast Startup environment with significant growth opportunities Location West Chester, PA – Daily onsite expected Applicants are encouraged to send a cover letter to: Ryan@exokinetics.com