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14 followers · 38 following

Achievements

Achievement: Pair Extraordinairex2Achievement: Pull Sharkx3Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Pair Extraordinairex2Achievement: Pull Sharkx3Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

Organizations

@wongames-course @fusion-real-estate @infra-devops-full @whitelabel-store @crivo-sync @zapix-sync

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geraldobl58/README.md

Hi 👋, I'm Geraldo Luiz

Senior Full-Stack Engineer | 15+ Years | Multi-Tenant SaaS · NestJS · Next.js · Java · Spring Boot · Kubernetes

Building production systems at scale for over a decade. Currently Senior Software Engineer at UOL Group (one of Brazil's largest tech companies), previously 7+ years at Casas Bahia — Brazil's biggest retailer — delivering e-commerce platforms for global brands like HP and AOC.

  • 🚀 Specialized in: Multi-tenant SaaS, e-commerce platforms, AI-integrated applications
  • 🛠️ Stack: NestJS · Next.js · TypeScript · Java · Spring Boot · PostgreSQL · Kubernetes · Stripe · Claude API
  • 📫 Reach me: geraldobl58@gmail.com

🚀 Featured Projects

Project Stack Description
Ecommerce Wlstore Whitelabel Java · Spring Boot · Next.js Microservices · Microfrontend · RabbitMQ · Saga
Snap Financial NestJS · Next.js · Claude API · Stripe AI-powered personal finance — snap a receipt, AI extracts the data
Crivo SaaS NestJS · Prisma · Keycloak · Stripe · Kong Production-grade multi-tenant SaaS boilerplate
Infra Lab K8s · ArgoCD · Helm · Prometheus · Grafana Full GitOps platform with 4 environments and observability

🛠️ Technical Stack

Category Technologies
Frontend Next.js 15/16, React 19, TypeScript, Tailwind CSS, MUI, Styled Components
Mobile React Native, Expo (Router, EAS), NativeWind, Tamagui, Reanimated, Skia
Backend NestJS, Node.js, Prisma, REST APIs, Java, Spring Boot
Database PostgreSQL, MongoDB, Redis
Message RabbitMQ, Kafka, NATS
DevOps Docker, Kubernetes, ArgoCD, Helm, GitHub Actions, Azure DevOps
Auth & Payments Keycloak, OAuth/OIDC, Stripe (subscriptions, webhooks, billing)
API Gateway Kong, rate limiting, JWT validation
Observability Prometheus, Grafana, Loki, OpenTelemetry
AI Integration Anthropic Claude API, OpenAI, DeepSeek
Testing Jest, Vitest, React Native Testing Library, Cypress, Storybook

💼 Experience Highlights

  • UOL Group (Jan 2026 – Present) — Senior Engineer building high-traffic e-commerce dashboards with Next.js 15, MUI, and large-scale REST integrations
  • Estadão (Nov 2024 – Nov 2025) — Tech Lead on WordPress → ARCXP CMS migration: 100% data integrity, 40% performance boost
  • Casas Bahia / Via (Jun 2017 – Sep 2024) — 7+ years building B2B/B2C platforms for HP, AOC, and other global brands

🌐 Connect with me

LinkedIn Email Portfolio

Pinned Loading

  1. infra-devops-full/infra infra-devops-full/infra Public

    Complete GitOps lab — k3d local cluster with ArgoCD, Helm charts, 4 environments (dev/qa/staging/prod), and full observability (Prometheus + Grafana + Loki)

    Shell

  2. g3developer g3developer Public

    Specialized in full stack development, focused on React, Next.js, Node.js, and modern technologies. Passionate about creating exceptional digital experiences that make a difference in people's lives.

    TypeScript

  3. snap-financial snap-financial Public

    AI-powered personal finance tracker — snap a receipt and Claude extracts the data automatically. Built with NestJS, Next.js 16, Prisma, and Anthropic API , Deepseek and Gemini and React Native

    TypeScript

  4. crivo-sync/crivo crivo-sync/crivo Public

    TypeScript

  5. whitelabel-store/wlstore-be whitelabel-store/wlstore-be Public

    Java

  6. whitelabel-store/wlstore-fe whitelabel-store/wlstore-fe Public

    TypeScript