Selected work
Forty-plus production systems shipped across seventeen years. The entries below are the ones most relevant to fractional-CTO engagements: scaled real-time platforms, regulatory-compliant architectures, agentic AI systems, and recovery work.
Engagements
By project
- Insurance platform
- Re-architected a monolithic insurance product into a modular platform, taking it from internal beta to 430,000 users within eight months
- Crypto hedge fund
- Replaced spreadsheet-based position management with an automated delta-hedging system; full workflow live within twelve months
- Cuko AIP
- Founder and lead engineer · open protocol for soulbound AI-agent ownership records — specification, reference contracts, anchor service · 2026 · github.com/Cuko-ltd
Patterns
Recurring engagement shapes
Real-time and high-frequency systems
Order routing, market-data ingestion, low-latency event pipelines. Stack typically Go or Rust on Linux, Kafka or NATS JetStream for transport, custom replay and snapshot tooling for recovery.
Compliance-bound architectures
GDPR, DORA, MiCA, and EU AI Act-aligned designs. Audit trails as first-class, data-residency boundaries enforced in code, breach posture rehearsed before incidents.
0→1 platforms
Greenfield product builds where the first architectural decision must hold for two to three years. Stack selection, build-versus-buy, hiring shape decisions made jointly with founders.
Recovery and rescue
Stalled projects, post-incident infrastructure rebuilds, systems that have outgrown their original design. Three production data-breach incidents handled to closure including regulator and board communication.