Outcome pod
Legacy Modernisation
A structured 10–20 day programme that moves a legacy system to a modern architecture — incrementally, with tests at every step.
- Duration
- 2–4 weeks
- Pod
- 2–3 senior experts + orchestrated agents
- Price guide
- $18,000–$35,000
- Billing
- milestone
What you get
- Strangler-fig migration plan with milestones and rollback points
- Tests written against legacy behaviour before any code is moved
- Extracted modules with clean interfaces, deployed to production
- CI/CD improvements that make future migrations cheaper
- Knowledge-transfer sessions so your team owns what we built
How it runs
- 01Day 1-2: legacy system audit and migration seam identification
- 02Day 3-5: test harness over existing behaviour (no changes yet)
- 03Day 6-15: extraction sprints — one seam per sprint, deployed daily
- 04Day 16-18: integration testing, performance benchmarks, rollback verification
- 05Day 19-20: handover, documentation, and knowledge-transfer sessions
Outcomes
- Highest-pain seams modernised and in production
- Test coverage over previously untested legacy behaviour
- Engineering team confident to continue the pattern independently
How it works
## What is it?
You have a system that works but can't move fast. Deployments are risky, adding features takes weeks, and the codebase repels new engineers. Legacy Modernisation takes that system and rebuilds the parts that are blocking you — without a big-bang rewrite and without stopping feature delivery.
We work in a strangler-fig pattern: identify the highest-pain seam, write tests against the existing behaviour, extract it behind an interface, replace the implementation, verify, ship. Repeat until you have a system you can accelerate on.
You get engineering velocity back. The debt doesn't disappear, but it stops compounding.
Related accelerators
Often paired with this engagement.
Outcome pod
Codebase Audit
A 5-day deep audit of an existing codebase: architecture, technical debt, AI-readiness, and modernisation paths.
Outcome pod
Engineering Productivity
A 5-day sprint that identifies, instruments, and fixes the biggest drag on your engineering team's output — build times, test flakiness, or tooling gaps.
Begin
Start the engagement. Or ask a question first.
Selecting Start creates a pre-scoped project with the plan and deliverables already populated. Your expert reviews and personalises it with you in the first session. No commitment until you sign.