SECTION I · THE BRIEF
Brief #72633Updated 24 SEP 2026BURLINGTON, MAYc
Employbl Company Profile

Senior Mechanical Design Engineer

SiPhox Health is hiring a Senior Mechanical Design Engineer in Burlington, MA. Full brief — comp band, interview process, and hiring team — available to Employbl members.

Location
Burlington, MA
Company size
—
Posted
Today
Via
Yc
Section II · Full ProfileFree with an account
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked

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Senior Mechanical Design Engineer

SiPhox Health· Burlington, MA, USView company profile


Job title
Senior Mechanical Design Engineer
Job location
Burlington, MA, US
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.
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