SaaSCore — Enterprise SaaS Foundation
A €180k/year enterprise deal on hold because two engineers had spent four months rebuilding auth and still couldn't ship SSO. The deal closed in week one of our engagement. Zero billing support tickets since.
Scope: SaaS foundation (billing, SSO, teams, audit) in parallel with the core product team.
The Challenge
60% of engineering budget spent on infrastructure. Stripe webhooks randomly missing events. A €180k/year enterprise deal blocked on SSO, audit logs, and seat-based billing their team couldn't ship.
The Solution
Stripe Billing with seat-based tiers, Google and Microsoft SSO via NextAuth, team invites, granular RBAC, tamper-evident audit logs, and a self-serve upgrade flow — plus a Redis retry queue that fixed the missed webhooks.
Client
David C.
“We had a €180k/year enterprise deal sitting in limbo for six weeks because we didn't have SSO or audit logs. Our engineers had already spent four months on auth — I couldn't ask them to drop everything again. Kiril built the entire SaaS layer alongside us in 10 weeks. The enterprise deal closed in week one once SSO was live. We've had zero billing support tickets in six months. Zero. I genuinely don't know how that's possible, but it is.”
David C.
Co-founder & CTO, Archflow
archflow.io
Key Results
Enterprise deal unblocked in week 1
Free-to-paid conversion (SaaS avg: 5–7%)
Billing support tickets in 6 months
Before → After
Trial-to-Paid Conversion
Engineering on Infrastructure
Timeline
10 weeks · 2024
Completed 2024
Scope: SaaS foundation (billing, SSO, teams, audit) in parallel with the core product team.
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