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Migrations that survive the next sprint.

Roadmaps, architectures and migrations that translate business priorities into measurable systems. No transformation as a label — only explicit decisions, signed ADRs, systems that hold the day after go-live.

Engagement8 — 24 weeks
Team1 — 2 senior
OutputSystem in production
DisciplineXP + Extreme Contracts
01 · The premise

Digital transformation fails when it becomes a program. It works when it's a well-defined technical migration.

Companies don't need another transformation framework. They need someone who opens the monolith, understands what it actually does, and proposes the minimum path that takes you from point A to point B — without freezing the business for six months.

We work with the discipline of Extreme Programming: small releases, continuous refactoring, simple design, continuous integration. Transformation is measured in increments that ship to production, not in milestone slides.

And we work with the Extreme Contracts approach: every engagement has explicit pre-conditions, measurable post-conditions, and invariants we never violate. You know what we need at the start, what comes out at the end, and what does not change in between.

02 · What we deliver

What we deliver.

/01

Signed technical audit

Current map of the system: stack, dependencies, debts, operational constraints. A document produced by the people who will then touch the code — not by a consultant who disappears.

/02

Migration roadmap

Sequence of reversible steps. Each step has a production value and a rollback threshold. No big-bang.

/03

Architecture Decision Records

Every non-trivial choice leaves a signed ADR. The "why" outlives us.

/04

Production pilot

The first slice of the new architecture, live, with real traffic, full observability, runbook written.

/05

Structured handover

Living documentation + pair-engineering sessions with the internal team. Success is measured by their autonomy.

03 · XP in action

How we operate.

XP / Small Releases
Weekly releases, never monthly.

Every Friday something goes live. Big decisions are made when they have real effect on the system — not early, not late, not "just to be safe".

XP / Refactoring
Refactor as a discipline, not a season.

We don't rewrite the system. We bring it to a maintainable form, piece by piece, while keeping it alive in production.

XP / Simple Design
Postgres before Cassandra.

Complexity is paid for in operations. We add tech novelty only when it pays back in a measurable way.

Contracts / Invariants
Three invariants we never violate.

The system stays observable. Stays type-safe. Stays testable from day one. On these three, we don't negotiate.

04 · The contract

Pre-conditions, post-conditions, invariants.

Every engagement has explicit pre-conditions, measurable post-conditions, and invariants we never violate. You know what we need at the start, what comes out at the end, and what we don't negotiate in the middle.

Pre-conditions / what we need from you
  • Access to repositories and current systems within the first week.
  • An internal technical decision-maker available on a weekly cadence.
  • Business stakeholders aligned on the "why" of the migration, before we start.
  • Budget and timeline confirmed for at least phase one (12 weeks minimum).
Post-conditions / what we guarantee
  • Target system in production, with defined SLOs and live dashboards.
  • Complete ADRs on all non-trivial choices, in the client's repo.
  • Operating runbook and tested rollback procedures.
  • Internal team able to operate the system without us within 30 days of handover.
05 · When it works

Right fit, wrong fit.

YESRight fit if…
  • You have a monolith that's slowing you down and need to migrate without freezing the business.
  • You have accumulated legacy debt and a hard deadline (audit, M&A, scaling).
  • You have multiple stacks that need to converge toward a single architecture.
  • You want the internal team to grow with the migration, not watch from outside.
NOWrong fit if…
  • You're looking for an agency that executes turnkey without your team's involvement.
  • You want a PoC to show the board and nothing more. We don't build PoCs that accidentally become production.
  • You don't have business stakeholders aligned. We can't be the ones selling transformation internally for you.
/start

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