Full-Time

Senior Mechanical Engineer

Hardware

Neptune Medical

Neptune Medical

1-10 employees

At-home fertility diagnostics and non-invasive device

Compensation Overview

$150k - $180k/yr

+ Equity

Burlingame, CA, USA

In Person

Bachelor's

Category
Mechanical Engineering (2)
,
Required Skills
SolidWorks

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Requirements
  • B.S. in Mechanical Engineering with 5+ years experience; Related degrees are acceptable, but you should be able to convince us that you are very competent in mechanical design.
  • Demonstrated experience designing and building mechanical mechanisms, interfaces, and structures.
  • Ability to document designs and assemblies in a manner that is reproducible and follows good documentation practices.
  • Experience testing, iterating, and documenting prototype solutions to undefined problems.
  • Knowledge of various types of motors, encoders, sensors, power transmission, and drive-train-related components.
  • Experience in electromechanical design.
  • Experience using various rapid prototyping techniques and basic machinery such as 3D printing machines and basic machinery (mill/lathe).
  • Demonstrated experience designing novel solutions to unsolved problems.
  • An inventive aptitude balanced with discipline and detail-orientation.
Responsibilities
  • Design structural and electromechanical aspects of complex robotic test systems.
  • Design and select motors, gear boxes, drivetrains and sensors to meet performance targets.
  • Design structural and interface elements as defined by cross functional needs and requirements.
  • Rapidly iterate test systems through 3D printed concepts to machined parts.
  • Engage in cross functional collaboration with Endoscopy, Systems and Manufacturing teams to generate elegant test capabilities.
  • Create and maintain Solidworks CAD models, interconnect diagrams, specifications and detailed drawings.
  • Create manufacturing methods and fixtures, including assembly fixtures and in-line/end-of-line test fixtures, to ensure final capital and endoscopy products meet specifications and safety.
  • Lead and participate in technical design reviews.
  • Work closely with colleagues to brainstorm, collaborate, and share knowledge, demonstrating a team forward mentality with honest work ethic.
  • Work effectively within the confines of a regulated, quality-system driven, FDA-monitored medical device environment.
Desired Qualifications
  • Experience with test bench and complex test system design.
  • Demonstrated experience in mechanical analysis including modeling tolerance stacks, static and dynamic analysis, FEA and thermal analysis.
  • Experience designing for manufacturability and understanding common manufacturing processes such as machining, sheet metal, etc.
  • Experience with risk analysis and risk mitigation to develop robust systems.
  • Demonstrated ability to generate original ideas by history of patents and IP.
  • Experience in a fast-paced environment.
  • Experience creating and managing schedules, budgets, and plans.

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 Jobs

Simplify's Take

What believers are saying

  • May 2026 Triton CARE 1 reported no adverse events and 100% cecal intubation.
  • Pathfinder's growing hospital base generates real-world evidence and commercial pull.
  • August 2024's $97 million Series D finances commercialization and clinical validation.

What critics are saying

  • Triton remains investigational in 2026; FDA clearance can slip beyond 2027.
  • Medtronic, Olympus, and colonoscopy incumbents can outspend Neptune on trials and distribution.
  • If Pathfinder adoption slows, Neptune becomes a one-product company reliant on venture capital.

What makes Neptune Medical unique

  • Pathfinder became Neptune's first FDA-cleared product, used in 15,000 patients by 2026.
  • Triton's Dynamic Rigidization targets full-colon robotic control with AI-assisted detection.
  • Neptune pairs endoscope access, robotic colonoscopy, and endovascular spinouts under one platform.

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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.