- Platform architecture
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Distributed and decentralized systems, edge compute, sharding and fan-out, and the
unglamorous parts — quotas, metering, and billing — that decide whether a platform
survives its own success.
- Applied cryptography
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End-to-end encryption, zero-knowledge authentication, forward-secret messaging, key
derivation and recovery, PKI. Shipped as products people use, not as papers.
- Engineering leadership
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Building teams that teach each other. Hiring, mentoring, and setting a delivery
cadence; translating tangled domain workflows into software people trust daily.
- Compliance under pressure
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GDPR, SOC 2, Schrems II, and data residency — designed into architecture rather than
bolted on, at a scale where getting it wrong carried a nine-figure price.
- Languages & runtimes
- TypeScript · JavaScript · Java · Kotlin · PHP · SQL · WebAssembly
- Cloud & data
- AWS · Cloudflare Workers · Durable Objects · PostgreSQL · MySQL · SQLite · R2 / S3