for pre-seed startups solving hard problems with hard tech
HAX is the world’s first and most active program built for pre-seed startups working at the intersection of science and engineering. We back founders tackling the hardest industrial-scale challenges, in fields like energy, advanced compute, transportation, health tech, and manufacturing, employing the most innovative new technologies, including everything from plasma and physical AI to advanced chemistry.
more than capital – a global engineering organization
Most investors wire money and wish you luck. We embed an elite, global engineering organization directly into your startup. Anchored in our 35,000 sq. ft Newark HQ headquarters and our upcoming 10,000 sq. ft. HAX Plasma Forge in Princeton, we provide the industrial-grade space and technical mastery required to transform complex research into category-defining products.
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$550K
$11B
$225M+
$1.5B
$3.5B
a seasoned team of scientists & engineers
we are SOSV
HAX is built on the foundation of SOSV, the world’s most active deep-tech venture capital firm. We invest at company inception, with pre-seed rounds and bring founders into one of three fully resourced locations in San Francisco, New York, and Newark. We continue to back companies through seed and later stages, supporting a global portfolio of 800+ startups across 58 countries.
founder community →
join the founder community by applying to a HAX program
jobs in hard tech →
join a high-growth HAX startup across disciplines
become a mentor →
support and advise startups with your unique expertise
industry partnerships →
corporate collaboration around the world’s hardest problems
invest with us →
meet startups currently raising or invest in SOSV
university partners →
pathways for students & researchers into hard tech