Mechanical Engineer III

Mechanical Engineer III As a Mechanical Engineer III, you'll take hands-on ownership of components and subassemblies throughout the product lifecycle-from early concepts and rapid prototypes through design validation, production tooling, release, and continuous improvement. Using SolidWorks and Arena PDM, you'll create reliable, manufacturable designs with a strong focus on plastic injection molding and integrated electromechanical systems. You'll work closely with electrical engineering, firmware, industrial design, supply chain, quality, and manufacturing to solve complex design challenges and turn ideas into products that perform reliably in demanding, real-world environments. This is an opportunity to sharpen your technical craft, expand your ownership, and see your work deliver meaningful customer impact at scale. Success in the Role In the first 90 days, you will: • Build strong partnerships across mechanical engineering, electrical engineering, firmware, industrial design, supply chain, quality, and manufacturing while developing a solid understanding of Evolv's products and development priorities. • Become proficient in Evolv's SolidWorks and Arena PDM workflows and contribute effectively to design reviews, documentation, and engineering-change processes. • Take ownership of defined components, subassemblies, or sustaining-engineering assignments and deliver high-quality designs, prototypes, drawings, or analyses with support from the broader team. In the first 12 months, you will: • Independently own mechanical design work for assigned product features, components, or sustaining initiatives from concept through validation and release. • Deliver reliable, manufacturable, and serviceable designs that appropriately balance performance, cost, quality, and schedule. • Drive product improvements by identifying root causes and partnering across manufacturing, quality, and supply chain to implement well-documented design solutions. The Work • Execute mechanical design and development for new and existing products, with an emphasis on injection-molded plastic components • Create detailed 3D models, assemblies, and production-ready drawings in SolidWorks or an equivalent CAD system • Translate product requirements into mechanical design specifications and contribute to design reviews and technical decisions • Design precision electromechanical assemblies and enclosures, and manage the full product lifecycle from concept and prototyping through production tooling and sustainment • Apply design for manufacturability and design for reliability principles to improve robustness, quality, yield, and long-term product performance • Perform tolerance analysis, structural and thermal validation, and root-cause analysis on mechanical issues • Collaborate with electrical engineering, firmware, industrial design, supply chain, quality, and manufacturing partners to ensure cohesive system integration • Work directly with contract manufacturers and suppliers, including international partners, to improve manufacturability and yield • Support tooling, fixture, test-equipment design, prototype builds, factory validation, test plans, failure analysis, and design-transfer activities • Manage and maintain CAD data, bills of materials, engineering change orders, test plans, and other engineering documentation using Arena PDM • Ensure compliance with Evolv quality-system and product-certification standards, including UL and CE requirements, and support risk assessments and DFMEA development • Research emerging materials, manufacturing processes, and design methods; propose and prototype creative solutions that improve performance and cost efficiency • Contribute to a collaborative, iterative engineering culture grounded in precision and curiosity Leadership, Team Structure & Culture You will join the R&D organization and report to the Director of Hardware Engineering. The organization fosters a collaborative, mission-driven culture that values trust, curiosity, kindness, and innovation. Role Location This is an onsite role, based at our headquarters in Waltham, Massachusetts. Compensation and Transparency Statement The base salary range for this full-time position is $114,000- $184,000. In addition to base salary, this role offers a competitive target bonus, equity, and a comprehensive benefits package. This range reflects our commitment to pay transparency and equity, in alignment with applicable state laws. Our compensation ranges are determined based on factors such as role, level, location, market benchmarks, and internal equity. The posted range represents the good-faith estimate of what we expect to pay for this role across U.S. locations. Actual compensation within the range will be based on the candidate's skills, experience, education, and geographic location. In accordance with state and local pay transparency laws-including those in California, Colorado, Massachusetts, New York, New Jersey, and others-we disclose salary ranges in all job postings and provide additional information upon request. We are committed to fair pay practices, and we regularly review our compensation programs to ensure they are competitive, equitable, and aligned with our values. Requirements • Bachelor's or master's degree in Mechanical Engineering or a related field • 4+ years of experience in mechanical design of electromechanical products, preferably in consumer electronics, industrial, or security systems • Proficiency with SolidWorks or an equivalent CAD system; PDM experience preferred • Understanding of processes and part design for plastic injection molding, sheet metal, and machined parts • Understanding of processes for molding large plastic parts, such as RIM, structural foam, or structural web molding • Knowledge of DFM/DFx, tolerance stack-up analysis, GD&T, materials selection, and expected variation in injection-molded, sheet-metal, and machined parts • Experience with Arena PDM or a similar product lifecycle management system • Experience working with suppliers, global contract manufacturers, and mid-volume production environments • Familiarity with structural, thermal, and vibration analysis using FEA or other simulation tools • Experience with modern prototype fabrication such as 3D printing • Strong cross-functional collaboration, communication, documentation, and presentation skills • A portfolio of professional or personal work with a brief description of key challenges and individual contributions • Experience with basic hand tools for concept and prototype assembly Preferred Experience • Experience with highly constrained electronics packaging and thermal management • Familiarity with design for reliability, FEA, and testing methodologies for mechanical reliability • Experience in regulated industries such as medical devices, automotive, or security technology • Experience using shop tools: drill, end mill, CNC router, and 3D printers Benefits Our Benefits Include: • Equity as part of your total compensation package • Medical, dental, and vision insurance • Health Savings Account (HSA) • A 401(k) plan (and 2% company match) • Flexible Paid Time Off (PTO)- take the time you need to recharge, with manager approval and business needs in mind • Quarterly stipend for perks and benefits that matter most to you • Tuition reimbursement to support your ongoing learning and development • Subscription to Calm