- Designs and builds backend services across three concurrent production projects serving 11,500+ enterprise users: Strapi 4/Node.js for Relink and Hazlo con IA, and Go (Gin/Gorm) for Despega tu Pega — owning each feature from technical design through deployment and monitoring - Designs and maintains RESTful APIs with strict service-boundary separation and idempotent operations; implemented JWT-based passwordless Magic Links authentication handling token issuance, validation, and expiry delivered via email and SMS - Works with PostgreSQL and MongoDB as primary data layers across concurrent production services, writing queries, managing schema changes, and maintaining data integrity - Implements and maintains GitHub Actions CI/CD pipelines for automated testing and zero-downtime deployments across Node.js and Go services - Uses Claude Code through a Plan-Review-Execute workflow as a core delivery accelerator — shipping complex backend features faster while preserving architectural integrity

- Led backend architectural migration from a tightly-coupled Strapi monolith to a hexagonal/clean architecture applying Domain-Driven Design principles — decoupling business domain from infrastructure and establishing technical standards adopted across the team - Built and maintained an async event-driven processing layer with GCP Pub/Sub consumers, Redis caching, and MongoDB storage; designed idempotent consumer patterns for correctness under at-least-once delivery semantics, including dead-letter queue handling - Introduced GCP Pub/Sub and Cloud Run for scalable async processing; led zero-downtime infrastructure migrations on Google Kubernetes Engine (GKE) with Docker-based deployments - Optimized system performance with Redis caching and Elasticsearch; provisioned AWS infrastructure with SST v2/v3 (IaC on AWS CDK) for a high-availability telemedicine platform - Mentored 3+ junior engineers through structured code reviews and technical pairing, establishing engineering standards across a distributed remote team

- Designed and built a domain-driven NestJS backend from scratch, decomposing a Node.js monolith into independently deployable services on AWS Lambda behind API Gateway using Serverless Framework; achieved 80% authentication performance improvement through a cold-start bypass protocol - Built a full-stack payments platform integrating Stripe: webhooks with idempotent event processing, checkout flows, and reconciliation-ready transaction handling with PostgreSQL data layer - Developed and maintained a proprietary SaaS ERP system across the full Node.js/TypeScript stack

- Delivered 5+ custom web applications and CMS solutions for Peruvian companies; deployed on Digital Ocean with MongoDB and automated backups