Taming a Refactoring
Regain control of a legacy codebase in an iterative and incremental way — without breaking everything, without blocking deliveries.
The problem
The codebase has become a drag. Every new feature takes three times longer than it should. Developers avoid certain parts of the code out of fear of side effects. Regressions pile up with every release.
The temptation to "rewrite everything" is real — but the big bang rewrite almost always fails: too long, too risky, impossible to deliver incrementally. Without a method, refactoring stalls, monopolises the team for months, and often ends up abandoned — leaving the codebase in an even worse state.
Delivered in contexts of technical debt recovery, architecture modernisation and craft coaching — with fast-growing startups and large enterprises alike.
How it works
Codebase analysis
Analysis of the existing codebase to understand the root causes of the refactoring need: mapping hotspots, coupling, and risk areas. Identification of delivery constraints and dependencies. Goal: establish a shared diagnosis before choosing a direction.
Refactoring techniques presentation
A sharing session on patterns and methods suited to the context — Strangler Fig, Bubble Context, Mikado Method, Branch by Abstraction, characterisation tests... A collective discussion to identify the most relevant approaches and define the first lines of work.
3 Mob Programming sessions
Mob work with the whole team to define the concrete strategy and actually start the refactoring. Baby steps, characterisation tests, safe refactoring: the right reflexes take hold by practising together on the real code, in real delivery conditions.
Deliverables
Codebase map
Hotspots, coupling and risk areas identified — a shared picture of the existing state to guide refactoring decisions.
Documented refactoring strategy
Chosen patterns, incremental migration plan and success criteria — a concrete roadmap shared by the whole team.
First iterations delivered
Actual refactored code produced with the team — not theory, a concrete start that proves it works.
Continuation guide
Principles, reflexes and watch-outs so the team can carry on autonomously after the engagement.
Legacy doesn't go away on its own — but it can be tamed.
Response within 48 hours.
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