Three things I can show, explain and defend line by line.
Own product · in production
chipa — an ERP in Go
Invoicing, stock, customers and reporting for small businesses in Paraguay. Go and gRPC behind Envoy, CockroachDB, a Next.js dashboard. Two customers in production; 700+ Go tests, end-to-end suites and CI. It ships an LLM assistant with ten tools, a control leash, a per-question audit ledger, hard spend caps and a 27-case evaluation bank run against three models.
GogRPCCockroachDBEnvoyNext.jsLLM toolingOpenTelemetry
chipaerp.com ↗
Client work · 2026
Investor-onboarding platform backend
For an investment firm serving European clients: KYC, document custody and GDPR data-subject rights. Go and gRPC on GCP (Cloud Run, Cloud SQL) with KMS envelope encryption, TOTP 2FA, four-eyes approvals and end-to-end OpenTelemetry tracing. Delivered in about four weeks.
GogRPCPostgreSQLGCPCloud KMSGDPRTOTP 2FA
Machine learning · hands-on
Models trained from scratch, and the checks around them
A CNN image classifier trained on a dataset I captured myself — dumb baseline measured first, time-based split so nothing leaks. Multi-head attention written by hand and verified identical to PyTorch's. A DQN agent on Atari Pong. The classifier served over FastAPI with a parity check against the training script. It's a short track record and I'd rather say so plainly; what I bring alongside it is the engineering.
PyTorchPythonComputer visionAttentionDeep Q-learningFastAPI