Evontro

Evontro builds and runs the backend systems and platforms that businesses depend on — with particular depth in EV charging, healthcare and fintech, where protocol correctness and compliance matter more than shipping fast.

Where we've done this

- A national EV charging network — we built the backend from inception. It now runs 3,000+ chargers and thousands of sessions a day as a multi-tenant platform, with OCPP and OCPI integrations across multiple charger manufacturers.

- A HIPAA-compliant healthcare SaaS for clinics, doctors and insurers — transcription workflows, patient management and insurance submissions, with encryption, access control and audit logging throughout.

- Earned-wage-access fintech — employer-configurable withdrawal policies, with salary deduction and reconciliation against payroll cycles. - An airport-lounge management system replacing a legacy incumbent — access control, real-time check-ins, billing and partner integrations, holding around 30 requests per second.

- Infrastructure work with numbers attached — a 30% reduction in a client's monthly cloud spend, and GPU cold starts cut from roughly three minutes to under ten seconds on a serverless inference pipeline.

How we work We scope before we code. You get a written plan you can correct, and assumptions raised early rather than discovered at delivery.

When the system already exists, we read it and work inside its conventions. We don't propose a rewrite because a rewrite is easier for us.

We own the work through to production — deployed, monitored, migrations safe to run, and documentation your own team can actually use. If it breaks, it's ours. And we'll tell you when a budget or timeline doesn't fit the scope — before you commit, not after.

Stack Node.js · TypeScript · NestJS · React · Next.js · PostgreSQL · MongoDB · React Native · Flutter · AWS (ECS, EKS, RDS, S3, CloudFront) · Terraform · Docker · GitHub Actions · Grafana · New Relic · DataDog · OpenAI and Anthropic APIs · RAG · MC