Felipe Santos

- Production Reliability & Crisis Management • Collaborate on enterprise-scale TypeScript/Node.js applications built with Nest.js, maintaining 99.9%+ uptime across distributed systems serving millions of users • Architect comprehensive monitoring solutions using CloudWatch, proactively identifying bottlenecks before they impact business operations • Execute complex MongoDB data migrations and system recovery procedures, ensuring zero data loss during critical operations • Develop automation scripts and workers for instant production hotfixes, reducing system downtime from hours to minutes and saving thousands in revenue loss • Contributing to system design, long-term bug fixes and architectural decisions to reduce techincal debt and effectively ensuring state-of-art code and systems • Provide rapid response to urgent enterprise channel reports while mastering complex production workflows • Build intelligent retry mechanisms eliminating 80% of manual interventions, dramatically improving operational efficiency - Architecture & Strategic Solutions • Collaborate on hexagonal architecture and Domain-Driven Design implementations, ensuring systems scale with rapid business growth • Drive technical debt reduction by analyzing production patterns and proposing sustainable improvements that prevent future issues • Optimize RabbitMQ event-driven systems, increasing message throughput and reducing system dependencies • Develop robust TypeScript/Nest.js applications implementing CQRS patterns and event-driven architecture across distributed systems spanning multiple business domains • Maintain production-grade APIs enabling external developers to seamlessly integrate our SaaS platform, ensuring reliable third-party implementations • Deploy and maintain CI/CD pipelines using GitLab, orchestrating hexagonal architecture deployments across AWS environments with zero-downtime releases

Freelance Backend engineer @ Hermès International - Global scale E-commerce development - Distributed systems and Microservices - Domain-driven Design - Clean Architecture - Event-driven design and Hexagonal architecture - Functional Programming • Node.js and TypeScript • REST APIs following JSON API specification - Express.js, Swagger, PACT • PostgreSQL for data persistence • Apache Kafka for data streaming between distributed domains • Docker and AWS services for cloud development, monitoring and deployment • GitLab for code management and CI/CD actions • Code reviewing, Mob, and Pair programming • Architectural decision contribution • Grafana, OpenTelemetry and Prometheus for monitoring - Test-driven Development • Cucumber.js (Domain features / Acceptance tests) • Jest (Domain Infrastructure / Unit and Integration tests) - Agile SCRUM and Kanban - Jira and Confluence for technical specifications and documentation - Slack and Microsoft Teams - JetBrains IDE ecosystem - Grafana for monitoring

Full-stack developer for companies in the United States and Brazil developing a variety of software such as e-commerce REST APIs and full-stack development with Node.js and Ruby on Rails in MVC/Microservices and Monolith architectures respectivelly, and automated task schedulers. - Ruby on Rails - Node.js - Amazon AWS - GitHub - Express.js - TypeScript - PostgreSQL - MongoDB

- Write technical specifications for the features defined with the Product team - Develop frontend features with HTML/JavaScript/CSS with Ember.js - Assist in the frontend framework migration from Ember.js to React.js - Develop backend features in Node.js + TypeScript and Express.js code with related tests with Mocha - Make sure the app is responsive and works across browsers - Help build a scalable infrastructure on AWS - Build a robust API consumed by our Web and our SaaS clients - Review code from other developers

Back-end developer in media intelligence projects in an agile environment with daily and weekly scrums with team members and managers. • Developed industry-leading RESTful APIs with Node.JS, Express.JS, AWS API services, and PostgreSQL across multiple projects. • Effectively maintained and enhanced existing code base between projects with different technologies with code management on GitHub

Front-end trainee working with JavaScript, CSS, HTML, jQuery, and Framework7 (Vue.JS similar), developing mobile and web applications.

My main role was to gather and analyze information about the user’s issue and determine the best way to resolve their problem. Also handling broken hardware and peripherals, configuration issues, troubleshooting, software installations, and hardware repair (including in-house repair or coordinating depot services). Filtering Help Desk calls and providing basic support and troubleshooting, such as password resets, printer configurations, break/fix instructions, ticket routing, and escalation to higher-level support. May also escalate to IT applications support or call for outside vendor maintenance (Level 4), as needed.

My main role was to gather and analyze information about the user’s issue and determine the best way to resolve their problem. Also handling broken hardware and peripherals, configuration issues, troubleshooting, software installations, and hardware repair (including in-house repair or coordinating depot services). Filtering Help Desk calls and providing basic support and troubleshooting, such as password resets, printer configurations, break/fix instructions, ticket routing, and escalation to higher-level support. May also escalate to IT applications support or call for outside vendor maintenance (Level 4), as needed.

My main role was to gather and analyze information about the user’s issue and determine the best way to resolve their problem. Also handling broken hardware and peripherals, configuration issues, troubleshooting, software installations, and hardware repair (including in-house repair or coordinating depot services). Filtering Help Desk calls and providing basic support and troubleshooting, such as password resets, printer configurations, break/fix instructions, ticket routing, and escalation to higher-level support. May also escalate to IT applications support or call for outside vendor maintenance (Level 4), as needed.