Bridgetree Technologies
Approach

Four phases.
No middle layer.

Every engagement is run by the principal engineers who will do the work. No account managers between you and the people writing the code. No layered teams designed to extract margin from your project.

Input to output pipeline
01
Week 1 – 2

Diagnose

Understand the system as it actually is.

  • Architecture and codebase review
  • Operational and incident-history review
  • Stakeholder interviews across engineering, product and operations
  • Written diagnosis with prioritised options and trade-offs
Artefact

Diagnosis memo. Specific. Actionable. Yours to keep.

02
Week 2 – 6

Architect

Design the target state and the path to it.

  • Target architecture with explicit non-functional requirements
  • Data model, service boundaries and integration contracts
  • Migration sequencing with reversible steps
  • Operational model: observability, SLOs, on-call, runbooks
Artefact

Architecture document, decision log and sequenced delivery plan.

03
Month 2 – 9

Build

Engineering led by the people who wrote the design.

  • Principal engineers writing production code, daily
  • Code review, testing and CI/CD as first-class concerns
  • Continuous deployment behind feature flags where appropriate
  • Weekly written status, fortnightly architecture reviews
Artefact

Working software in production. Tests, dashboards, runbooks.

04
Ongoing

Operate & Hand-over

Set the system up to outlive the engagement.

  • Runbook and observability hand-over with shadow on-call
  • Knowledge transfer sessions for the in-house team
  • Post-engagement review with measurable outcomes
  • Optional retainer for advisory, escalation and incident response
Artefact

An in-house team that owns the system and a clean exit on our part.

Engagement models

Three ways we work.

Most engagements start as one of these and evolve. The shape of the engagement should follow the shape of the problem — not the other way around.

Model A

Diagnostic

Two to four weeks. Independent technical review of an existing system, team or roadmap. Written deliverables, optional verbal walkthrough.

Commercial
Fixed fee
Model B

Embedded

Three to nine months. Principal engineers join your team to design, build and ship. We bring engineering rigour; you keep institutional context.

Commercial
Monthly retainer
Model C

Outcome

Defined deliverable, defined timeline. We take end-to-end ownership of a discrete piece of work — a system, a migration, a platform component.

Commercial
Milestone-based
Governance

How decisions get made.

We keep governance lightweight, written and inspectable. Designed for the people who'll have to defend the system to a board, an auditor or an external security reviewer.

Architecture decision records
Every meaningful technical decision is written down with context, alternatives and consequences. Searchable, dated, attributable.
Weekly written status
Short, structured updates. What shipped, what's blocked, what's next, what changed in the plan.
Fortnightly architecture review
Live working session with your engineering leadership. Open agenda, recorded outcomes.
Incident discipline
Production incidents get post-incident reviews. Root causes get engineered out, not papered over.

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