Case study / Clearyst° Benchmark
A certification platform, rebuilt without losing a customer.
Clearyst° Benchmark, formerly Green Business Benchmark, helps businesses measure their sustainability work and earn a recognised, tiered certification. The existing product had outgrown the systems it ran on, and every certified business had to come with it.
We rebuilt it end to end: a React app for businesses, an admin console, public profiles with live certification seals, Stripe billing and AI-assisted evidence checks, then moved existing customers across with a reviewed import. Nine months and 85 releases in, we still ship it.
- React
- .NET
- PostgreSQL
- Stripe
- Azure
- Claude
85releases
From January to October 2026
15modules
Backend feature modules
270+endpoints
Typed API surface
680+tests
Unit and integration tests gating every deploy
5tiers
Certification levels, from Committed to Platinum
3days
To re-skin the whole product for the rebrand