Keith Vaughan

Cloud, security, and the systems that now have to run AI.

Cloud Security · Infrastructure · AI Systems. Founder of Cipher Projects and SumoSign.

PracticeThree modes

Build, advise, invest.

One standard across all three: software that ships and compounds.

Build to production

Ship systems operators can trust.

Cloud architecture and hardened backends first. AI agents and private retrieval when the work demands it — evaluated as a security problem, not a demo.

Advise with signal

Senior technical partnership without theatre.

Fractional CTO and advisory for founders and leadership teams — architecture, delivery, and enough operator presence to keep decisions honest.

Invest as operator

Selective stakes in software and infrastructure.

Backing early-stage companies where build capacity and systems judgment matter — investor and operator, not a spectator seat.

Read the operating layer.

Vision in writing. Durable facts in the machine file.

Open writing