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Software Architecture Excellence

You’ve been told “we need to rewrite it” for three years. The rewrite never ships. The old thing gets slower. Every quarter another six months disappears. We fix that — in months, not years — with foundation-model agents doing the evidence-heavy work and senior humans holding the judgment.

Legacy code modernisation

The codebase nobody wants to touch. Modernised while it keeps shipping.

  • Agents read the code and rebuild the mental model your team lost.
  • Safety nets first — characterisation tests before anything moves.
  • Extract in reversible slices behind feature flags. No big-bang rewrite.
  • Every slice ships to production. Nothing lives on a migration branch.

Turn slow into fast

The dashboard that takes twelve seconds. The API that times out. Fixed with evidence.

  • Baseline first: latency, throughput, cost per request — real numbers, not opinions.
  • Kill N+1s, sync bottlenecks, and chatty RPCs where the profiler points.
  • Cache, batch, and go async at the layers that actually earn it.
  • Rewrite the two or three hottest paths in a shape that fits the workload.

Modernise things you never got around to

The dependency graph from 2019. The auth flow nobody understands. The CI that takes 40 minutes. Cleared.

  • Batch dependency upgrades with agent-authored codemods and per-slice tests.
  • Close CIS Controls v8 security debt as first-class work, not a follow-up.
  • Rebuild CI/CD for fast feedback, reproducible builds, and deployable trunk.
  • Generate ADRs, runbooks, and onboarding docs from real system behaviour.
Modernisation stops being a rewrite gamble when the agent trail, the safety nets, and the human-in-the-loop review all line up. See how the same evidence discipline underpins our buy-side due diligence and sell-side preparation engagements.

Tired of the rewrite that never ships?

Book a call. We’ll baseline the current system, scope the first slice, and give you a real answer in weeks — not another six-month promise.

Contact us