Solidity Developer

Maintained and evolved a microservices architecture composed of 4+ services (Node.js/Express, NestJS, Golang, Python), each handling distinct domains including geospatial indexing, PDF processing, and public government data ingestion. Reduced API response time from ~2s to 0.5ms on critical endpoints through query optimization and caching strategies. Led internalization of a third-party service, eliminating $3,000/month in external costs while improving reliability and maintainability. Built Elasticsearch-powered indexing service with NestJS for geospatial data and image search used in an interactive map product. Managed asynchronous processing pipelines using Azure Service Bus for high-throughput background jobs. Implemented observability practices including structured logging and queue monitoring across distributed services.

Developed and maintained APIs for a payroll loan (crédito consignado) fintech platform, ensuring reliability and compliance with financial regulations. Refactored compliance scoring logic, improving user credit evaluation accuracy and reducing processing complexity. Optimized critical endpoints, directly improving response times and system throughput for a high-volume financial product. Mentored and led a team of 3 (2 interns + 1 junior developer), conducting code reviews and ensuring consistent delivery quality. Applied clean architecture principles and design patterns to improve maintainability and scalability across the codebase.