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Mainline SaaS Co. · Software / Cloud & Infrastructure
Took a Toronto founder from idea to first paying customer in 11 weeks: full-stack SaaS, billing, auth, multi-tenant — built, deployed, and onboarded.
8 weeks
Idea → V1 in production
Week 11
First paying customer
<$120
Monthly infrastructure cost
A solo founder with a sharp idea, a 6-month savings runway, and no engineering co-founder. They needed a real product in the market fast enough to validate, not a prototype that would need rebuilding when traction came.
Two-week discovery to lock the MVP feature set and rule out everything that wasn't essential.
Built on a stack chosen for solo-founder maintainability post-handover.
Shipped V1 to production at week 8 with auth, Stripe billing, and core workflow.
Sat with the founder for two demos a week through onboarding — closed the first deal at week 11.
First paying customer 11 weeks after kickoff. Founder still owns and maintains the codebase six months in — exactly the goal.
“I have a real product in the market and I can read the code. That's the brief I gave them and they delivered it.”