Case studies

A Series B fintech was losing engineering velocity behind a decade-old ledger service. We rebuilt it on an event-sourced Postgres foundation with a compatibility shim in front so the old API kept working during cutover.

Outcome: p99 latency down 78%, zero customer-facing downtime, ledger errors eliminated.

A specialty clinic network needed a patient intake app that survived audit and worked on tablets in the lobby. Built on a hardened stack with row-level security and on-device encryption for offline capture.

Outcome: Intake time down from 22 to 6 minutes, passed third-party HIPAA audit on first attempt.

A support-tooling SaaS wanted an in-app copilot that drafted replies grounded in the customer's own knowledge base. We built the retrieval layer, eval harness, and per-tenant guardrails.

Outcome: 41% of replies accepted verbatim, average handle time down 28%.

Under NDA we can share detailed write-ups from regulated industries and enterprise engagements. Email info@rvlstech.com with your industry and use case.