About me

I hold a Bachelor’s degree in Information Systems from UNA and work as a Junior Developer Analyst at Rumo Soluções, where I build and maintain .NET and React systems, APIs and data collection bots.

I believe AI amplifies my career, but it only multiplies what I already know. That’s why I keep studying code and am taking a postgraduate course in Software Architecture with AI at Full Stack Club: AI writes more and more of the code, and I want to be the person who decides how a system is designed, tested and maintained.

Outside the company, I build projects for my community, such as the website and the inventory system of Primeira Igreja Batista em Lagoa Santa, a local church, and the website of the Recanto Vida care home.

See how I work with AI
Based in
Lagoa Santa, Minas Gerais, Brazil
Languages
Portuguese (native) and English (intermediate)
Photo of Davi Afonso

Timeline

2021Started my degree in Information Systems.
2023First projects in C# and .NET.
2024Website for the youth group of Primeira Igreja Batista em Lagoa Santa.
2025Finished my degree at UNA, started a web development internship at Rumo Soluções, and built an inventory system for the church and the website of the Recanto Vida care home.
2026Promoted to Junior Developer Analyst at Rumo Soluções, the CRC Equipamentos work order system and the church website in production, AI training for the company, and the start of my postgraduate course.

Technologies and skills

Architecture
Clean Architecture, DDD, hexagonal architecture, modular monolith, ADRs, OpenAPI, REST APIs, JWT, role-based access
Scalability and performance
Vertical and horizontal scaling, distributed caching, load balancing, indexes, pagination
AI
Spec-Driven Development (SDD) with Spec Kit, Harness Engineering, orchestration of agents and subagents, Claude Code, OpenAI Codex, OpenCode, Kiro, MCP, Context7, Serena, TestSprite, OpenAI and Gemini integration
Backend
C#, .NET, ASP.NET Core, Entity Framework Core, Node.js, Fastify
Frontend
React, Next.js, TypeScript, Tailwind CSS, TanStack Query, shadcn/ui
Databases
PostgreSQL, SQL Server, MongoDB, MySQL, Supabase
Infrastructure
Docker, Azure, Azure DevOps, GitHub Actions, Nginx, VPS, Vercel
Testing
xUnit, Vitest, Pest, Playwright, TestSprite
Automation
Puppeteer, Azure Service Bus, SignalR
Davi Afonso | Full Stack Developer, .NET and React | DaviDev