Geanderson Silva

Full Stack Developer

Building scalable ERP & E-commerce, ecosystems with Node.js, React, .NET | 18+ years of experience | Advocate for Clean Code & SOLID principles

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Welcome to my portfolio! Explore my work and skills.

About Me

I am a Senior Full Stack Developer with over 18 years of professional experience, specializing in enterprise solutions, ERP systems, and e-commerce platforms. My journey began with web development using PHP and JavaScript, but I found my passion working with Totvs's ERP Protheus, which opened doors to enterprise environments and complex system integrations.

Throughout my career, I've evolved from creating simple web pages to architecting scalable backend applications with NestJS and TypeScript, developing mobile applications with React Native, and leading development teams. I have extensive experience with database management (Oracle, SQL Server, PostgreSQL) and cloud deployments (Azure, AWS).

I'm passionate about clean code, SOLID principles, and Domain-Driven Design (DDD). I believe in building maintainable, secure, and performant applications while fostering team collaboration and knowledge sharing. Currently based in Famalicão-Braga, Portugal, I'm always eager to take on new challenges and contribute to innovative projects.

Technical Skills

frontend

ReactAngularReact NativeHTML/CSSJavaScriptTypeScript

backend

Node.jsNestJSC# .NETASP.NET MVC.NET Core

database

SQL ServerPostgreSQLOracleT-SQLPL/SQLTypeORM

DevOps & Tools

DockerGitHub ActionsAzureAWSBitbucketCI/CD

ERP & Business

Protheus ADVPLVTEX E-commerceTLPPERP Integration

Best Practices

Clean CodeSOLIDDDDUnit TestingE2E TestingAgile/Scrum

Work Experience

Full Stack Developer

Watermelon - Technology

Sep 2024 - Present

Portugal

Developed and maintained systems using.NET MVC, Razor, JavaScript and HTML
Participated in Agile scrum meetings, ensuring clear communication and timely delivery of project milestones
Enhanced website performance by optimizing images and scripts, improving page load times

C#ASP.NET MVCJavaScriptSQL ServerAzure

Senior Full Stack Developer

Todimo S/A - Retail Building Materials.

2019 - 2024

Brazil

Backend integrations developer and implanting of the E-commerce VTEX
Development React Native for Sales App
Develop backend application (NestJS) to integrate between Mobile App and ERP
Improvements legacy application with C# Desktop integration with Gertec types of equipment

NestJSReact NativeVTEXTypeORMGit Actions

Backend Developer

Facepass Brasil - Startup.

2018 - 2019

Brazil

Create and maintain server-side logic, APIs, and services using Nest.js
Writing unit and E2E tests with (Vitest and Cypress), define patterns to organize the project
Docker to manage, organize, and share development environment
AWS to deploy applications and manage resources of the system

NestJSPostgreSQLDockerAWSRabbitMQ

Tech Lead Software Engineer

Castrillon Auto Parts LTDA - Auto Parts Retail.

2016 - 2018

Brazil

Head of the team develop C# and ADVPL (ERP Protheus), requirements gathering and demand management
Improved the performance of the application by rewriting the SQL queries
Wrote functions and procedures to generate information for the Purchasing, Inventory, and Financial departments

C#ADVPLOracleQlik SenseSOAP/REST