Nicolás Cancino

Migrated legacy pricing services to Google Cloud (GKE, Pub/Sub, Cloud SQL) following the platform team's target architecture, modernizing critical systems serving multiple Falabella retail brands. Designed the event-driven ingestion channel via Pub/Sub for the core pricing platform, complementing existing bulk-file and REST API channels (price creation, expiration, and competition tracking). Built a data unification pipeline using Apache Beam / Dataflow (Java), Pub/Sub, and Kubernetes to consolidate heterogeneous pricing data from multiple stores into a single normalized response. Implemented PostgreSQL → BigQuery historical offload, freeing transactional capacity and enabling analytics at scale. Tuned PostgreSQL with pg_stat_statements + targeted indexes for high-frequency operations.

Led the from-scratch rebuild of a production service using hexagonal architecture in Go, plus a custom migration tool to transform and move ~30M records across 10 tenants from Firestore to PostgreSQL — enabling complex filtering not feasible in the previous NoSQL design. Drove adoption of code-first API documentation by introducing OpenAPI/Swagger generation directly from Go code via swaggo. Refactored multiple Go microservices to hexagonal architecture, decoupling domain logic from infrastructure. Implemented end-to-end request tracing via context.Context propagation and structured logging with zerolog.

Designed and built backend microservices and REST APIs in Node.js for the Falabella e-commerce platform, supporting production traffic across the retail ecosystem. Owned the full microservice lifecycle: API design, implementation, integration with internal platforms, deployment, and observability.

Built proof-of-concept solutions for LATAM corporate clients, including a 'Things to do' recommendation chatbot integrating Google Maps and DialogFlow.

Developed Java/Spring microservices for a corporate internal application along with the corresponding Angular frontends consuming those services.

Ambrocito Training

Online platform for selling and streaming calisthenics video courses. Course catalog, lesson player with HMAC-protected HLS streaming, MercadoPago checkout, JWT auth with Google sign-in linking, transactional email.

DaniG Yoga

Online platform for selling and streaming yoga video courses. Hexagonal Go backend, Astro PWA frontend with hls.js video player, full deploy stack on Cloud Run + Cloudflare Pages + Supabase.