Judged by outcomes, not slideware.

Challenge

A European retail bank had to exit a sunsetting API gateway platform — 47 production proxies, regulated payment flows, partner integrations, and a hard licence deadline. Consumers could not be asked to change a single line.

What we did

• Proxy-by-proxy re-platforming on the TechyWave Method: behavioural parity proven by replaying captured production traffic against the new platform before each cutover.
• shared-flow fault-handling and logging patterns standardised.
• HSM-backed mTLS rebuilt correctly on the target.
• 100% automated CI/CD from day one.

Challenge

A payments platform saw 5–6% of authorisation calls fail HMAC verification — intermittently, untraceably, and at real revenue cost. Two vendors had looked; neither owned the seam between the signing service and the verifying gateway.

What we did

• One team, both sides of the seam: byte-level comparison of signed and verified payloads isolated a character-encoding divergence between serialisation layers.
• the fix was three lines, the diagnostic framework reusable. Runtime detection then tuned to catch any recurrence.

Challenge

An industrial group had GenAI ambition, a nervous risk committee, and the EU AI Act on the horizon. Two pilots had stalled at the demo stage — no guardrails, no evaluation, no governance story to take to the board.

What we did

• RAG over the group's own knowledge with evaluation harnesses and guardrails.
• LLM red-teaming against the OWASP Top 10 for LLM Applications.
• model inventory and risk classification aligned to the EU AI Act.
• the existing gateway and identity controls extended to model traffic.