• Architect server-side infrastructure using FastAPI microservices on GCP for global card game distribution, choosing microservices over monolithic design to provide component isolation and targeted scaling capabilities.

• Implement comprehensive game analytics combining BigQuery and Amplitude that reduced feature experimentation cycles by 40% and enabled data-driven validation of product-market fit hypotheses.

• Create fault-tolerant synchronized gameplay experience across time zones using Google Tasks, maintaining 99.9% reliability for time-sensitive game mechanics.

• Reduce infrastructure costs by 40% through strategic migration to serverless architecture while maintaining sub-100ms response times and 99.99% availability.

• Drove backend development autonomously in a lean cross-functional team (8 members), coordinating integration points with iOS client, design, and marketing workstreams.

• Rescued production platform by diagnosing and resolving critical Node.js/NestJS memory leak using Chrome DevTools heap snapshots, Node.js --inspect flag, and v8-profiler to identify closure-scoped event listener references that weren't being properly garbage collected.

• Conducted infrastructure audit that cut operational costs by 80% through infrastructure-as-code implementation while preserving performance for NYC gym's booking and streaming services.

• Developed secure OAuth 2.0 authentication system between proprietary platform and third-party services, ensuring credential security and frictionless user experience.

• Assumed key technical leadership role in small 3-person team (1 PM, 2 engineers), driving critical architectural decisions to stabilize and scale gym booking and video streaming application.

• Led frontend modernization implementing micro-frontend architecture with Webpack 5 Module Federation.

• Reduced build times by 70% while enabling incremental migration through independently deployable feature modules.

• Transformed deployment processes that increased release frequency 8x (from monthly to bi-weekly deployments) and reduced feature delivery time by 33% (from 15 to 10 days), enabling faster iteration and customer feedback through CI/CD pipeline optimization and automated testing.

• Provided technical leadership for a cross-functional team of 11 specialists including mobile developers (iOS/Android), backend engineers, product managers, and designers building a comprehensive dealership maintenance, test drive, and vehicle delivery platform.

• Successfully navigated major team reorganization while maintaining development velocity, creating comprehensive documentation, establishing onboarding procedures, and mentoring new team members to ensure seamless knowledge transfer.

• Recognized with multiple MVP awards from team members for exceptional technical contributions, leadership during critical phases, and creating architectural improvements that significantly enhanced system reliability and maintainability.

• Architected and deployed diverse client solutions including a global aviation booking portal and cross-platform Shopify CRM systems while engineering a React Native event discovery platform using serverless architecture.

• Led technical migration from Twilio to Agora WebRTC for a communications client, implementing video and audio capabilities while designing RESTful and GraphQL APIs across multiple projects to optimize data exchange and system performance.

https://www.toptal.com/resume/felipe-machado

• Architected and scaled mission-critical call system from 5,000 to over 100,000 daily calls by implementing distributed processing and intelligent caching strategies, directly contributing to 300% user growth (1M to 4M+) for social networking application.

• Created App Store simulator with automated A/B testing that accelerated marketing concept validation from 2 weeks to 3 days, directly improving user acquisition efficiency.

• Implemented synchronized daily calling mechanisms with custom real-time communication protocols that became the platform's signature engagement feature.