15 years shipping production backend systems in Go and Node.js. Last 18 months going deep on applied AI — building products end-to-end from Kubernetes infra up to RAG pipelines.
I work as an independent contractor through MVN Development LTDA (Brazil) for remote teams worldwide. USD only, full overlap with US Eastern.
Playsonora — an AI-powered music school. Solo build. Backend, data layer, RAG pipeline, and human-in-the-loop teacher review. All me. Engineering notes on the blog.
- Production-grade Go and Node.js microservices — NestJS, RabbitMQ, event-driven, sub-200ms p95
- LLM systems in production — RAG pipelines, OpenAI integrations at enterprise scale, human-in-the-loop review loops
- Cloud and infra — Kubernetes/GKE on GCP, Terraform, OpenTelemetry + Prometheus, multi-cloud (GCP/AWS/fly.io)
- End-to-end ownership — from cluster up to product features. One hire instead of three.
| Where | What | Numbers |
|---|---|---|
| Air Apps | OpenAI integrations + ETL/ELT rewrite | +25% user engagement, -50% incident response, -40% data processing time, <200ms p95 |
| Eleven Dragons | Tech Lead Backend — NestJS + Go microservices on fly.io / AWS / GCP | OTel + Prometheus instrumented, mentored junior |
| Mobiplus / Afya | CliqueRX — digital prescription system for Brazilian doctors | Shipped to millions of users |
Full track record: LinkedIn
Go TypeScript Node.js NestJS PostgreSQL Redis MongoDB RabbitMQ Pub/Sub Kubernetes GKE Terraform Docker OpenTelemetry Prometheus OpenAI RAG
Senior or Staff Backend roles, 100% remote, USD, where AI is a core product capability or backend reliability at scale is the core challenge. Talk to me: viniciusmvn@pm.me · LinkedIn DM