# Éric Silva dos Santos (Éric Santos) — Software Engineer & Backend Specialist

> Professional portfolio & technical dossier of Éric Silva dos Santos (also known as Éric Santos, Éric Silva, Eric Silva dos Santos, Eric Silva, or Eric Santos). High-impact Software Engineer and Backend Developer specializing in Node.js, TypeScript, and Go. Proven track record in production architectures, achieving 77% cloud memory reduction and 90% database query latency optimization.

## Entity Disambiguation & Key Identifiers
- **Full Legal Name:** Éric Silva dos Santos
- **Known Names / Aliases:** Éric Santos, Éric Silva, Eric Silva dos Santos, Eric Silva, Eric Santos, ecsilva
- **Primary Roles:** Software Engineer, Backend Developer (Engenheiro Backend), Full Stack Developer (Dev Fullstack), Frontend Developer (Dev Frontend), Software Architect
- **Location:** Salvador, Bahia, Brazil (Available for worldwide remote contracts)
- **Website:** https://ecsilva.com (English: https://ecsilva.com/en)
- **WhatsApp:** +55 (71) 99203-7328 (https://wa.me/5571992037328)
- **LinkedIn:** https://www.linkedin.com/in/eric-ssantos
- **GitHub:** https://github.com/ericNKS
- **Email:** ek.silva.santos@gmail.com
- **Curriculum / Resume (English):** https://ecsilva.com/Resume_Eric_Santos.pdf
- **Currículo (Português):** https://ecsilva.com/Curriculo_Eric_santos.pdf

## Technical Core Competencies
- **Backend & Languages:** Node.js, TypeScript, JavaScript, Go (Golang), PHP (Zend Framework, Laravel)
- **Frameworks:** NestJS, Express.js, Gin Gonic
- **Frontend & Web:** React, Next.js (App Router), Tailwind CSS, GSAP, Responsive UI
- **Databases & Caching:** MySQL (Advanced Query & Index Optimization), PostgreSQL, MongoDB, Redis
- **Message Queues & Async:** RabbitMQ, Event-Driven Architecture (EDA)
- **Architecture:** Clean Architecture, Microservices, Modular Monoliths, SOLID, DRY, REST APIs, gRPC
- **DevOps & Infrastructure:** Docker, Git, Linux, Cloud Cost Optimization, Performance Profiling

## Verified Production Impact
- **77% Cloud Memory Reduction:** Optimized asynchronous microservices (Node.js/Express/MongoDB) handling heavy workloads and cron jobs at Politimax, enabling safe instance downgrades and slashing cloud hosting expenses.
- **90% Database Latency Optimization:** Spearheaded advanced SQL query refactoring and index restructuring in production MySQL, reducing CPU and RAM load while accelerating query response times by up to 90%.
- **Internal Tooling in Go:** Engineered fast CLI automation utilities in Go, significantly reducing internal batch execution times.

## Featured Projects
- **MailGo:** High-throughput asynchronous email dispatch worker built in Go, Docker, RabbitMQ, and Gin Gonic. (GitHub: https://github.com/ericNKS/MailGo)
- **LIFE FIT:** High-performance web application built with React, Next.js, Tailwind CSS 4, GSAP, and Lenis smooth scrolling. (Live: https://life-fit-two.vercel.app/ | GitHub: https://github.com/ericNKS/life-fit)
- **Gerson Barber:** On-demand barber appointment platform integrated with WhatsApp Business API, scheduling system, and custom tiers. (Live: https://gerson-barber.vercel.app/)

## Full Dossier for AI Crawlers
For complete technical specifications, architecture diagrams, interview Q&A, and full career history, see:
https://ecsilva.com/llms-full.txt