Emerson – PostgreSQL, Next.js, Node.js

High-concurrency Remote Game Server (RGS) and real-time iGaming platform built to support regulated casino operations. Leading the full-stack architecture, I owned the end-to-end development of the core transaction engine and interactive game clients—enabling ultra-low latency game sessions (10,000+ concurrent requests in 70–150ms), real-time betting events, regulatory compliance auditing, and seamless frontend gaming experiences.

• Engineered a scalable Remote Game Server (RGS) processing 10,000+ concurrent requests in 70–150ms using Node.js, NestJS, PostgreSQL, and Redis Streams for real-time betting events and ACID-compliant distributed transactions.
• Implemented fault-tolerant microservice patterns—including idempotent event consumers, automated retries with exponential backoff, and circuit breakers—to eliminate duplicate event processing under peak traffic.
• Built asynchronous data pipelines using Node.js Streams and Worker Threads to process massive regulatory audit logs (GLI/SIGAP compliance) without blocking the event loop.
• Architected immersive, hardware-accelerated iGaming interfaces and ultra-fast responsive UI components using Next.js, React, Tailwind CSS, and PixiJS.
• Leveraged Claude Code AI agents to automate Playwright E2E test generation and optimized GitHub Actions CI/CD pipelines to accelerate production deployments.

Enterprise B2C e-commerce marketplace serving 120,000+ daily retail consumers. Promoted to Tech Lead within 4 months, I led the end-to-end architecture transition from a legacy storefront into an open multi-vendor marketplace—featuring high-concurrency catalog management, dynamic search, fraud-protected checkout, and third-party seller API integrations.

• Promoted to Tech Lead within 4 months after taking ownership of a stalled marketplace initiative, aligning priorities with stakeholders, negotiating deadlines, and reallocating resources to achieve a successful Go-Live.
• Diagnosed and resolved critical platform downtime caused by external partners mistakenly flooding internal Admin APIs; restructured API routing, enforced rate limiting, and redirected traffic to dedicated high-throughput Node.js endpoints.
• Led the frontend modernization from a legacy Knockout.js architecture to a scalable React, Redux, and Oracle Store Front (OSF) ecosystem, eliminating N+1 query bottlenecks across catalog and order services.
• Implemented client-side ClearSale device fingerprinting and custom Node.js backend routing middleware for low-latency fraud prevention during checkout.
• Orchestrated Black Friday platform stability (120,000+ daily visits) by configuring Datadog observability, aggressive Akamai CDN caching, and SSR optimizations for search crawlers, alongside a modular UI library (Tailwind CSS, Chakra UI, Material UI).

• Pioneered one of Brazil's first enterprise Oracle Store Front (OSF) implementations, defining scalable architectural standards, UI component blueprints, and development guidelines.
• Developed custom Server-Side Extensions (SSEs) using Node.js to process complex business rules and handle high-throughput backend data exchange.
• Reduced API processing latency by 50% through targeted response caching and endpoint optimization during high-traffic shopping peaks.
• Built responsive storefront modules and streamlined cart/checkout state synchronization using React, Redux, and modern JavaScript.

• Pioneered one of Brazil's first enterprise Oracle Store Front implementations for Mickey.com.br.
• Defined technical standards and development blueprints.
• Developed custom Server-Side Extensions using Node.js to process complex business rules.
• Reduced processing time by 50% and scaled backend API efficiency.

Large-scale IoT automation ecosystem for corporate and residential environments, enabling real-time device control, telemetry monitoring, and intelligent management across connected hardware systems.

• Engineered a scalable corporate IoT automation platform integrating a responsive React front end with robust AWS cloud services for real-time device monitoring.
• Developed backend APIs and telemetry data pipelines using Node.js and Python to process automated hardware events and status updates.
• Integrated backend services with dynamic React front-end interfaces to ensure a seamless, real-time user control experience.