Understand, decide, hand over

Architecture, code, team, organization, contracts, costs. The assessment comes before the recommendations, and it’s in writing. Not everything gets fixed at once. Three or four projects that change the situation beat a list of thirty. A CTO makes the call. Decisions are explained to the team, defended in front of leadership, and owned by whoever made them. A tool, an automation, or an AI use case gets built with the people who will use it, on their data, and has to earn its place: a cost removed, a delay cut, a risk eliminated. Decisions documented, team self-sufficient, successor hired or trained. The engagement succeeds when the company can do without it.

Principles

Know the craft, drive the agents

Pure-manager profiles are on their way out. A good CTO understands the team’s work hands-on, and drives AI agents to get work done: analyzing code, prototyping an idea, building a tool. They judge on results, and they know how to check what agents produce.

Build the adoption plan with you

AI is new, and few companies have deployed it successfully in a real transformation. No ready-made method applies as is. The adoption plan gets built with your teams, on their real work, in an approach modeled on the forward deployed engineer.

Enough structure, no more

A team of 8 doesn’t need the processes of a team of 80. The level of organization follows the company’s size and stage.

What works for you

The right solutions are the ones your team can keep running, within your constraints and budget. An elegant system no one can maintain is worthless.

Independence

No partnerships with software vendors, integrators, AI providers, or recruiting firms. Every recommendation serves your company alone.

Nicolas Mussat

Founder of Monolithic Lab. 25+ years of experience in software development, architecture, and infrastructure, building and leading engineering teams, and a daily practice of driving AI agents to prototype, analyze, and build.

At MeilleursAgents, as first employee in 2008, he built the company’s three products with the technical cofounder, then the engineering team, which he went on to lead as CTO. Nine years later, MeilleursAgents was France’s leading online real estate valuation platform.

At Prose, the personalized hair and skincare brand, he was cofounder and CTO from 2017 to 2025. He built from scratch the platform that runs the company, from the online consultation to made-to-order manufacturing in two US factories.

He runs every engagement personally, with no junior staff and no subcontractors.

See references · What 25 years of experience brings to the CTO role