A UK SaaS platform was losing users because the API couldn't keep up with growth.
When user traction outpaces backend architecture, founders often face a tough choice: endure the churn, or pause feature development for a costly 6-month rewrite. We found a third path.
Approach
Instead of a costly rewrite, we profiled the bottlenecks, fixed the database schemas, and introduced targeted job queues for heavy background tasks.
Learned
"Most scaling problems don't need microservices—they need better indexing, smarter queues, and simple caching. Keep it boring, keep it fast."
