Senior Product Design Engineer
HeirloomCalifornia, United States
Posted February 17, 2026
Full Time
About the Company
Heirloom develops the world's most cost-effective direct air capture (DAC) technology, permanently removing CO₂ from the atmosphere by accelerating limestone's natural carbon-sequestration process from years to days. In 2023 the company opened North America's first and only DAC facility, delivering proven, permanent CO₂ capture at scale. Its clients include major corporate carbon-removal purchasers such as Microsoft, JP Morgan, McKinsey, Stripe, and Shopify, underscoring the technology's commercial viability. Heirloom's unique blend of rapid limestone chemistry, low operating cost, and proven permanence positions it as a leader in the climate-tech sector, offering job seekers a chance to contribute to a scalable, science-based solution for climate mitigation.
Job Description
The Senior Product Design Engineer will own the design and execution of complex mechanical subsystems that directly influence the economics, reliability, and scalability of Heirloom's core technology.
Requirements
- 5+ years of experience designing and delivering products through the full lifecycle
- Strong passion for product design and solving complex engineering problems
- Excellent engineering fundamentals, with the ability to apply first principles, modeling, and data to real-world design decisions
Benefits
- Excellent health, dental and vision insurance
- 16 weeks paid parental leave
- Generous stock options
- Unlimited PTO for exempt employees & 120 hours for non-exempt employees
- 401(k)
- Monthly health and wellness reimbursement
- Annual education and conference budget
