Built by Tim

Live product

RevenAI

Structural growth diagnosis for B2B SaaS

• The problem: revenue can keep rising while the underlying growth system quietly weakens.
• For whom: revenue leaders before scaling decisions, founders before raising capital, investors assessing structural durability.
• What it does: classifies a company’s growth archetype from ARR data, with an AI Growth Architect to explore the diagnosis.
• My role: co-founder, responsible for growth architecture and strategy. Built together with Cor-Jan Holwerda (product & engineering).

Working prototype

Northstar Diagnostics

How I take a leadership team from commercial evidence to a decision

• The question: “Why is substantially more pipeline producing only modest new-ARR growth and worse predictability?” In the demo case, pipeline is up 42% but new ARR only 14%, and late-stage win rate fell from 36% to 15%.
• How it works: evidence and signals → problem structure → hypotheses and tests → decision and validation plan → pilot operating playbook. Every conclusion can be traced back to the evidence behind it.
• Why it matters: this is how I work as a Revenue Architect. It separates what we know from what we don’t yet know, states its confidence, and ends in a decision instead of another dashboard: here, hold extra pipeline spend and run an 8–10 week validation sprint first.
• Includes: six linked views and a printable A4 executive report.

Fictional case: all companies, people and figures are invented. An independent capability demonstration, not a Winning by Design product.

Live

Operatie Pakjesnacht

A Sinterklaas detective game for children aged 7 to 11 (in Dutch)

Sinterklaas is the Dutch December tradition in which a kindly saint and his helpers, the Pieten, bring presents on the evening of 5 December. In this game, the clumsy helper Plof has lost a sack of presents yet again. Children search the house with a flashlight, solve puzzles and crack a secret code to get the presents back in time.

• The problem: I wanted to give my son a Sinterklaas adventure of his own to play on his tablet, without ads or accounts.
• The journey: five levels through an illustrated house, puzzles, clues and a secret code, ending in a final search. Three difficulty levels, different every time.
• What I built: a tablet game with my own recorded voices for the characters. No account, no ads, no data collected.
• Built with: Claude (AI-assisted development).