# Senior Mechanical Design Engineer **Company:** [SiPhox Health](https://zerogtalent.com/frontier-companies/siphox-health) **Location:** Burlington, MA, US **Work mode:** On-site **Seniority:** Mid **Employment type:** Full Time **Salary:** USD 100K–200K/yr **Category:** Mechanical **Listed:** 2026-09-23 [View and apply on Zero G Talent](https://zerogtalent.com/frontier-jobs/siphox-health/senior-mechanical-design-engineer-111653) ## What you'll do - Lead mechanical design for medical device subsystems - Design and review parts for injection molding - Plan and execute engineering tests to validate designs - Create 3D and 2D MCAD models per standards - Mentor engineers on MCAD, DFM/DFA, and verification ## What you need - 3+ yrs mechanical design experience - Expert MCAD user; injection molding expertise - Experience scaling products from prototype to volume - Mechanical assembly: ultrasonic welding, laser welding, adhesives - Tolerance studies and design verification experience ## Job description ### **About us** SiPhox Health is building a first-of-its-kind consumer diagnostics platform that brings complex biochemical analyses into the home through integrated silicon photonics, microfluidics, embedded systems, and advanced assay development. Our chip-based solution integrates state-of-the-art biochemistry, photonics, electronics, and microfluidics to deliver the power of large laboratory instruments in a portable device. ### **The role** You will be hands on designing and building the first of its kind home testing system. This person will directly own key parts of the system, with a wide scope to have an impact. You will work closely with the production teams to create systems that are elegant to use, but also manufacturable at scale. ### **Responsibilities** - Lead mechanical designs for defined subsystems of medical and diagnostic devices, ensuring functionality, reliability, and manufacturability - Design and review parts and assemblies optimized for high-volume injection molding and automated assembly methods - Apply rapid prototyping techniques to accelerate product development and iteration, with minimal guidance - Plan and execute engineering tests to validate designs and improve performance - Create and review detailed design specifications, including 3D and 2D MCAD models following ASME Y14.5 or ISO 8015 standards - Closely collaborate with cross-functional teams, including manufacturing engineers and scientists, often owning the mechanical side of complex technical challenges - Lead root cause analysis and drive design or process changes to enhance product quality and performance - Own system design, system and sub-system requirements and verification plans for your subsystems - Mentor Mechanical Design Engineers on MCAD practices, DFM/DFA, and design-verification approach - Review other engineers' designs and drawings for manufacturability and compliance with design standards - Take a leading role in supplier and vendor conversations for the components/subsystems you own ### **What we’re looking for** - Deep knowledge of the challenges of scaling products from prototype to high volume production - Real experience working with pilot and full volume production systems, implementing quality controls and maximizing the product’s quality and yield - Excellent knowledge of injection molding design, including tolerance studies - Excellent knowledge of mechanical assembly techniques, including ultrasonic welding, laser welding, clip design and adhesives - Creative problem solver - Expert MCAD user ### **Nice to have** - Demonstrated ability to design mechanical mechanisms, from concepting through to volume production - Experience in medical devices, or with ISO 13485, ISO 14971, or other design controls process - Experience working at a manufacturing site, as a process, test or tool engineer - Optics, photonics, fluidics, or microfluidics exposure - Experience in SolidWorks and OnShape ### **Employment Details** **Department:** Product Engineering **Work location:** Burlington, MA (on-site), with some travel to manufacturing sites in the US, Europe and Asia. Trips typically for 1-2 weeks in duration as required. **Salary Range:** $100,000 – $200,000 (depending on experience) ### **Benefits:** - 401K - Health Insurance - Dental Insurance - Vision Insurance - Health Savings Account - Health Flexible Savings Account - Dependent Care Flexible Savings Account - Life Insurance - Paid Time Off - Parental Leave - Long Term Disability  - Equity - Gym Membership (Lifetime Fitness — one block from the office) ### **Physical Requirements** - Ability to lift up to 20 pounds. - Ability to do dexterous tasks with hands, e.g. manual assembly with small tools, soldering - This role involves physical activity and routine handling of chemicals. Candidates must adhere to all laboratory safety protocols and be comfortable using appropriate personal protective equipment (PPE). ### **Who Thrives Here** This role is a strong fit for someone who takes ownership without being asked, is energized by variety rather than routine. They are highly motivated by SiPhox’s mission. ### **Why Join SiPhox Health** - Help bring a first-of-its-kind at-home diagnostics platform to market. - Work alongside multidisciplinary engineering and scientific teams solving complex technical challenges. - Competitive compensation, equity, and benefits (including Lifetime Fitness membership). ### **Equal Opportunity Employer** SiPhox Health is an equal opportunity employer committed to building an inclusive workplace. Applicants of all backgrounds and experiences are encouraged to apply. ## Other open roles at SiPhox Health - [Manager, Clinical & Product Operations](https://zerogtalent.com/frontier-jobs/siphox-health/manager-clinical-product-operations-117132) — Burlington, MA - [Senior Customer Support Specialist and Trainer](https://zerogtalent.com/frontier-jobs/siphox-health/senior-customer-support-specialist-and-trainer-117102) — Burlington, MA / Remote - [Customer Support Lead](https://zerogtalent.com/frontier-jobs/siphox-health/customer-support-lead-117042) — Burlington, MA, US / Remote - [System Integration & Test Engineer](https://zerogtalent.com/frontier-jobs/siphox-health/system-integration-test-engineer-111719) — Burlington, MA, US - [Head of Consumer Experience; Home blood testing](https://zerogtalent.com/frontier-jobs/siphox-health/head-of-consumer-experience-home-blood-testing-109475) — Boston, MA, US --- *Source: [Zero G Talent](https://zerogtalent.com), the job board for space, defense, AI, robotics and frontier-tech companies.*