// about
We are a small firm, and we like it that way.
Gravexa, LLC is an engineering consultancy focused on identity for connected products. From the device's root of trust to the user's mobile-app login, we work with startups building their first connected SKU and with enterprises hardening systems that have served customers for a decade.
What sets the work apart isn't a methodology or a framework. It is the insistence on writing things down and shipping them. Every engagement leaves behind documents your team will keep reading, code your engineers can keep extending, and decisions whose tradeoffs are legible.
Identity is not a brand to put on a website. It is a set of choices that determine whether your connected product survives contact with reality. We make those choices in your favor.
// principal
linkedin.com/in/gregpowell ↗Greg Powell
Founder & principal engineer
Thirty years at the intersection of cryptography, secure systems architecture, and product development. Building companies and platforms that became foundational infrastructure for automotive, IoT, defense, and connected mobility.
Founded Valicore Technologies, whose secure device-lifecycle management platform was acquired by Green Hills Software and now operates as OmniTrust's security services business. From whiteboard to acquisition to scaled global deployment, that arc is the lens I bring to every engagement: solving the immediate technical problem and designing systems that grow, endure, and create lasting value.
Hands-on technical depth alongside strategic leadership. Architected globally deployed PKI and device-lifecycle systems, led engineering organizations of 30+ people, and delivered security infrastructure used by Fortune 50 companies. Currently powering a consumer service platform accessed by more than 100,000 customers daily across North America, growing worldwide.
Early and extensive practitioner of AI-augmented engineering. Integrated Claude Code into my core development workflow since its earliest release, meaningfully accelerating prototyping, code quality, and delivery cycles. This site is one example.
If your company needs a partner who has founded, built, shipped, and scaled security-critical systems, not just advised on them, let's talk.