Senior Backend Engineer | Node.js, NestJS, TypeScript | APIs, Integrations & Distributed Systems

Remote — Brasília, DF, Brazil
• Engineered backend microservices with Node.js, NestJS and TypeScript, applying clean architecture and SOLID principles to high-volume transactions and system integrations.
• Designed and tuned PostgreSQL data models, indexes and complex queries to reduce latency and support concurrent application traffic.
• Built real-time webhooks, automated document generation and embedded DocuSign API signing services with failure-recovery mechanisms.
• Designed caching and fallback layers for government REST APIs (CATMAT/CATSER) to maintain service continuity during upstream outages.
• Configured GitLab CI/CD pipelines and Docker containers, running automated unit and integration tests before production deployments.

Rio de Janeiro, RJ, Brazil
• Maintained mission-critical administrative and procurement software, supporting legacy-to-modern database integrations and continuity of operations.
• Managed hybrid network infrastructure, messaging protocols and secure server environments under strict regulatory and operational constraints.

Beirut, Lebanon
• Managed critical IT communications and real-time data flow between Brazilian forces and United Nations international headquarters in a high-pressure environment.
• Coordinated daily operations in English with multinational military officers and engineering personnel.

Remote — Caxias do Sul, RS, Brazil
• Implemented production-ready services with JavaScript and TypeScript toolchains and automated build environments.
• Collaborated with backend and product engineering teams through Git and GitLab CI workflows to deliver reliable application modules.

In progress.