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Neptune Medical

At-home fertility diagnostics and non-invasive device

Product Development Engineer 2

Full-TimeUpdated on 10/23/2026
$100k - $130k+ Equity + 401(k) match
Mid
Bachelor's, Master's
Burlingame, CA, USA
In PersonLocated in Burlingame, California, near the Millbrae Caltrain and BART Station.
Biology & BiotechBiomedical Engineering & Medical Devices

About the job

Requirements
  • A B.S. or M.S. in Mechanical, Biomedical, or a related field of Engineering.
  • Three or more years of work experience.
  • Demonstrated experience working with cross-functional teams.
  • Experience with test engineering and/or design verification.
  • A solid understanding of design controls and risk management.
  • A strong desire to succeed as an engineer, as a team, and as a company.
Responsibilities
  • Develop and execute test methods for a complex, robotically driven medical device.
  • Design, prototype, and build custom electromechanical fixturing.
  • Develop software scripts to control robotic platforms and tools for data post-processing and analysis.
  • Apply principles of systems engineering, design controls, and risk management to medical device development.
  • Define and maintain design requirements based on stakeholder needs and product safety.
  • Use statistical analysis techniques to support data-driven decision-making and define acceptance criteria for design verification testing.
  • Identify and root-cause product issues or defects.
  • Implement test process improvements to improve the accuracy, repeatability, and reproducibility of results.
  • Author, release, and maintain robust documentation in a product lifecycle management system.
  • Prepare and present technical read-outs to cross-functional audiences, including engineers, quality and regulatory personnel, and leadership.
  • Emphasize product quality, patient safety, data integrity, and other principles of GxP.
  • Support company goals and objectives, and follow policies and procedures that comply with FDA Quality System Regulations, ISO 13485, and applicable domestic regulations, including Cal FDB, OSHA, and Cal-OSHA.
Desired Qualifications
  • Experience working in the medical device industry and/or other regulated environments.
  • Experience with disposables/consumables.
  • Experience with electromechanical and/or robotic systems.
  • Experience working in a start-up environment.
  • Experience with product lifecycle management (PLM) and application lifecycle management (ALM) tools.
  • Experience using statistical techniques to analyze quantitative data.
  • Experience with rapid prototyping.
  • Familiarity with test method validation, fixture qualification, and/or non-product software validation.
  • Proficiency with Minitab.
  • Proficiency with SolidWorks.
  • Proficiency with Linux-based operating systems.
  • Proficiency with Python.

About the company

Neptune Medical develops devices and tests to address male infertility. Its two main products are Pro-Test, an at-home diagnostic kit that lets individuals test fertility parameters from home, and Neptune, a non-invasive device designed to improve sperm quality. Pro-Test provides a convenient way to assess fertility without clinic visits, while Neptune uses a proprietary, non-invasive method to enhance key sperm metrics and is intended for home use alongside clinical fertility treatment. The company serves both clinics (B2B) and individual consumers (B2C) and markets its products to help diagnose and treat male infertility, a factor in about half of all infertility cases. Neptune Medical differentiates itself by offering integrated, consumer-accessible diagnostics and treatment tools, backed by grant funding and participation in precision medicine programs, aiming to make diagnosis and treatment more private, accessible, and effective.

Company Size

1-10

Company Stage

Series D

Total Funding

$97M

Headquarters

Burlingame, California

Founded

2016

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Simplify's Take

What believers are saying

  • FDA clearance on September 16, 2026 unlocks U.S. hospital purchasing cycles.
  • Neptune expanded headcount to 155 employees by March 2026, supporting commercialization.
  • 2026 hiring and DDW study momentum signal active physician interest and pipeline execution.

What critics are saying

  • No public evidence shows meaningful revenue from Triton by October 5, 2026.
  • Pathfinder still is not available for sale outside the United States on October 3, 2026.
  • A missed commercial rollout for Triton would strand Neptune’s $97 million platform investment.

What makes Neptune Medical unique

  • Dynamic Rigidization makes Neptune’s scope control mechanically distinct from standard endoscopy.
  • Triton 1 won FDA clearance on September 16, 2026 for colon procedures.
  • Pathfinder reached 15,000 patients, proving clinical adoption before Triton’s launch.

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Benefits

  • 401(k) Company Match
  • Company Equity

Company News

The Robot Report
Oct 4th, 2024
Robotics Investments Near $1B In August

Listen to this articleSwiss-Mile raised $22M in August 2024 for its wheeled quadruped. Fifty producers of robots and robotics enabling technologies received funding in August 2024, pulling in a total of approximately $1 billion. This figure is on par with the $1.2 billion average The Robot Report has tracked each of the previous 12 months. Investment targeted to robotics companies for the first eight months of 2024 equals about $10.86 billion. You can follow The Robot Report‘s investment section here. The largest investments in August were secured by developers of autonomous driving technologies

Business Wire
Aug 17th, 2024
Neptune Medical Announces $97M Series D Financing and Spinout of Jupiter Endovascular

Neptune Medical announces $97 million in Series D financing, along with the spinout of its Jupiter Endovascular subsidiary.