Senior Design Engineer (Hand Tools) STS Technical Services United States, Wisconsin, Brookfield 250 South Executive Drive (Show on map) Sep 04, 2026 STS Technical Services is hiring a Senior Design Engineer (Hand Tools) in Brookfield, Wisconsin, to support the design and development of new hand tool products and the continued improvement of existing products. This role is designed for an experienced mechanical engineer with strong product design skills, advanced mechanical analysis capabilities and the ability to serve as a technical leader on complex new product development projects. Position Overview The Senior Design Engineer serves as a primary technical resource and mechanical engineering leader for mid- and high-complexity hand tool development projects. This position combines product design, engineering analysis, testing and technical mentorship while helping project teams make informed decisions based on performance requirements and user feedback. Responsibilities Serve as the chief technical resource and mechanical engineering leader on mid- and high-complexity hand tool new product development projects Contribute to user-focused discussions that help shape product performance based on user needs and feedback Provide clear engineering information to Project Leaders and Global Engineering teams Support technical trade-off decisions throughout product development Establish test regimens for components and assemblies with minimal guidance Analyze test data and develop recommendations to support design decisions Prioritize engineering work based on project impact Serve as a technical resource within areas of expertise Provide consultation and mentorship to other team members Perform mechanical stress analysis Complete tolerance stack analyses Support mechanism development and analysis Use calculations and software-assisted engineering analysis to evaluate product designs Qualifications Bachelor of Science degree in Mechanical Engineering or Engineering Mechanics At least five years of design experience Strong proficiency with 3D CAD software Experience with Creo, SolidWorks, NX or similar platforms Strong experience with finite element analysis Strong mechanical aptitude Broad knowledge of engineering materials Strong understanding of mechanical properties Knowledge of manufacturing processes associated with engineering materials Ability to travel up to 10 percent domestically and internationally Strong interest in tools used within automotive, aircraft or marine mechanic trades Preferred Qualifications Master's degree in Mechanical Engineering, Engineering Mechanics or a related discipline About STS Technical Services STS Technical Services is a Top 100 Staffing Firm that partners with leading aerospace, manufacturing, defense and industrial organizations across the United States. We connect skilled professionals with career opportunities where their experience can make an immediate impact. Apply Today If you have advanced mechanical design experience and are ready to lead complex hand tool development projects, apply today to join STS Technical Services as a Senior Design Engineer in Brookfield, Wisconsin. Equal Opportunity Employer STS Technical Services is an equal opportunity employer. #IndeedSTS