What is a fractional CTO?

A senior technical leader who works with your company part time. You get the judgement of a CTO without the cost of a full-time executive.

Founders without a technical co-founder, and small teams that need senior direction on architecture, hiring or delivery.

Do you also write code?

When it helps. The role is leadership first, and we can pair it with a build engagement.

What experience is behind this?

More than a decade of leading engineering teams and delivery programs, plus the products we build and run ourselves.

Fractional CTO and technical leadership

Senior technical leadership for your product, part time, without a full-time hire.

Start a conversation

Early teams often need senior technical judgement long before they can justify a full-time CTO. The cost of going without shows up later, as rework.

We step in part time: set the direction, put a delivery process in place and help you hire. Every decision is written down so the team can carry on without us.

An architecture and stack review, with written decisions
A technical roadmap tied to your product goals
A delivery process: specs, code review, tests and releases
An AI-assisted engineering setup your team can run safely
Help with hiring: role definitions, interviews and onboarding
Vendor and cloud cost reviews

Specify
We agree the goals, the decisions you need made and how much time you need.
Plan
We review the code, the team and the roadmap, and write down the priorities.
Lead and review
We join planning and reviews, unblock the team and keep decisions on record.
Verify
We check progress against the goals on a fixed rhythm and adjust the plan.

Capability
Agentic engineering
Spec-driven agent workflows that plan, build, review and verify software, with a human approving each stage.
Capability
Research and evaluation
Recurring, ranked technical research that informs model, tooling and product decisions.
Blog
How we ship software with AI agents without losing control
Specs, small plans, task-scoped agents, independent review and real checks. How agents do the work while people keep the decisions.
Blog
LLM evals for small teams: a practical starting point
How to build LLM evals with a small team: start from real failures, use pass/fail checks, calibrate an LLM judge and gate every prompt change.

What is a fractional CTO?: A senior technical leader who works with your company part time. You get the judgement of a CTO without the cost of a full-time executive.
Who is this for?: Founders without a technical co-founder, and small teams that need senior direction on architecture, hiring or delivery.
Do you also write code?: When it helps. The role is leadership first, and we can pair it with a build engagement.
What experience is behind this?: More than a decade of leading engineering teams and delivery programs, plus the products we build and run ourselves.

Work with us

Tell us what you want built.

A short form. We reply to every message about client work.

Fractional CTO and technical leadership

What you get

How we work

Specify

Plan

Lead and review

Verify

Where we already do this

Questions

Tell us what you want built.