FL
Engineer II, Mechanical Engineering.
full-time•San Diego•$105k - $115k
About this role
We are seeking a highly motivated Mechanical Engineer II to join our multidisciplinary
engineering team. In this role, you will design mechanical components, develop and validate complex system architectures, and drive experimental efforts to mitigate technical risks across thermal, fluidic, and motion subsystems. You will contribute directly to improving system performance, developing automation validation tools, and enabling data-driven decisions that influence product direction.
Responsibilities:
-Design, prototype, and refine mechanical components and assemblies using sound
engineering principles with close collaboration with cross-functional teams (electrical,
fluidics, optics, software, systems engineering) to ensure seamless system integration.
-Select and integrate key components such as motors, bearings, encoders, pumps, valves,
sensors, seals, heaters, and thermoelectrics.
-Generate detailed CAD models, engineering drawings, and documentation.
-Design and execute experiments to characterize key system performance metrics.
-Develop and execute test hardware setup to mitigate risks associated with thermal, fluidic, and motion system performances, including selection, integration and qualification of necessary metrology tools and sensors, as well as developing custom scripts to execute
tests.
-Analyze data to identify root causes, validate design hypotheses, and guide system
improvements.
-Conduct critical parameter mapping (CPM) tests to identify optimal performance parameters and characterize system limits.
-Translate experimental insights into actionable design or operational recommendations.
Document and communicate findings clearly for engineering and leadership review.
Minimum qualifications:
B.S. or M.S. in Mechanical Engineering or related field.
2–5 years of mechanical engineering experience.
Proficiency in CAD tools (e.g., SolidWorks).
Experience with data acquisition, scripting (Python/MATLAB), and test development.
Strong analytical, communication, and documentation skills.
Usage of basic fabrication tools (milling, drilling, mechanical assembly, fluidics assembly)
Preferred qualifications:
Comfortable with rapid build-measure-learn cycles.
Basic electronics knowledge (microcontrollers, motor drivers)
Basic knowledge of data analysis and statistical processing.
Salary 105K – 115K, Offer Bonus Offer Equity
Please attach your portfolio link here.
We are an equal opportunity employer. We thrive on diversity and collaboration.
What you'll do
- The Mechanical Engineer II will design mechanical components and develop complex system architectures while collaborating with cross-functional teams. They will also conduct experiments to mitigate technical risks and improve system performance.
About Foresite Labs (Stealth Co)
Foresite Labs creates companies at the intersection of AI/machine learning and science. We believe AI, generative AI, and data science—when applied with scientific rigor—can accelerate discovery and drive innovations that benefit humanity.
We provide the foundation for bold ideas to take shape and accelerate, shaping a better future for all. We offer competitive salaries, excellent benefits, and a flexible work environment where employees learn from top thinkers across multiple disciplines. With headquarters in San Francisco and Boston, we’re building a culture where scientific rigor meets entrepreneurial ambition.
Foresite Labs Values
Truth over progression: We follow the science, pursuing ideas that are grounded in data and abandoning them when not supported by the evidence.
Take good risks: Our culture values informed risk-taking: good decisions are celebrated even when they result in bad outcomes. Everyone feels safe to contribute ideas and to learn from failure.
Single accountable person: The project team lead is accountable for all decisions and for maintaining transparency and information flow within the team; we trust the project teams. The Review Committee unlocks capital and sets directions.
Simplicity and Focus: “Companies die from indigestion, not starvation” (Bill Hewlett) We will focus on a few ideas aggressively and minimize all other distractions. Everyone will have a few key goals that have measurable outcomes.
Respect and Community: Our employees are our greatest asset; everyone invests in creating an environment of collaboration and respect. We support their careers and career development whether they stay, go to a Labs company, or end up somewhere else.
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Frequently Asked Questions
What does Foresite Labs (Stealth Co) pay for a Engineer II, Mechanical Engineering.?
Foresite Labs (Stealth Co) offers a competitive compensation package for the Engineer II, Mechanical Engineering. role. The salary range is USD 105k - 115k per year. Apply through Clera to learn more about the full compensation details.
What does a Engineer II, Mechanical Engineering. do at Foresite Labs (Stealth Co)?
As a Engineer II, Mechanical Engineering. at Foresite Labs (Stealth Co), you will: the Mechanical Engineer II will design mechanical components and develop complex system architectures while collaborating with cross-functional teams. They will also conduct experiments to mitigate technical risks and improve system performance..
Is the Engineer II, Mechanical Engineering. position at Foresite Labs (Stealth Co) remote?
The Engineer II, Mechanical Engineering. position at Foresite Labs (Stealth Co) is based in San Diego, California, United States. Contact the company through Clera for specific work arrangement details.
How do I apply for the Engineer II, Mechanical Engineering. position at Foresite Labs (Stealth Co)?
You can apply for the Engineer II, Mechanical Engineering. position at Foresite Labs (Stealth Co) directly through Clera. Click the "Apply Now" button above to start your application. Clera's AI-powered platform will help match your profile with this opportunity and guide you through the application process.