Do you take equity or revenue-share?

Generally no, but case-by-case. I’ve done two equity-only builds in 10 years, both were for friends with strong product-market fit and existing revenue. Default answer for a cold inbound is "cash up front."

What I will consider: 50/50 cash + equity for a series-A or series-B startup with a credible CTO already in seat, where I’m a temporary specialist plug-in (e.g. Hyvä migration, Claude Code rollout). Vesting cliff and acceleration clauses apply.