John Serafini is a Venture Partner and member of the Investment Committee at Shield Capital. See sector focus and contact routes.
John Serafini is a Venture Partner and member of the Investment Committee at Shield Capital, where he leverages two decades of experience founding and leading national security technology companies, including as CEO of HawkEye 360 and former SVP at Allied Minds. His investment thesis centers on dual-use technologies at the intersection of defense, government, and commercial markets, with specific focus on cybersecurity, artificial intelligence, aerospace, space technology, and advanced data analytics. Shield Capital, the firm he partners with, targets early-stage companies at pre-seed, seed, seed-plus, and Series A stages in AI, autonomy, cybersecurity, and space. While Serafini’s typical check size and lead/follow behavior are not publicly specified, his background as a founder of multiple successful startups suggests a hands-on, operator-oriented approach to investing. Notable portfolio companies linked to his founding track record include HawkEye 360 (low Earth orbit space sensing), BridgeSat (optical connectivity), Federated Wireless (spectrum sharing), and Percipient Networks (cybersecurity). Serafini distinguishes himself through his unique blend of milit
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