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Software Engineer & Systems Architect

Lucas E. Freitas

Senior Software Engineer specializing in .NET 8, Clean Architecture, High-Throughput Distributed Systems, and Modern Cloud Infrastructure. Designing resilient, decoupled platforms with zero vendor lock-in.

Technical Stack & Engineering Philosophy

Contract-first architecture guided by OpenAPI v3.0.3, strict separation of concerns, idempotent database migrations, and edge observability.

Backend & Cloud Core

  • .NET 8 / C#
    Clean Architecture & Minimal APIs
  • EF Core 8
    Code-First, Idempotent Bundles
  • PostgreSQL
    Supabase Pooler & Row Level Security

Frontend & Modern Web

  • Next.js 16 (App Router)
    Server Components & ISR
  • TypeScript & React 19
    End-to-End Type Safety
  • Tailwind CSS v4
    Typography & Responsive Dark Theme

DevOps & Cloud Native

  • Docker & GHCR
    Multi-stage non-root containers
  • GitHub Actions
    Automated CI/CD with testing & deploy
  • Cloudflare & Render
    Edge DNS, Full/Strict SSL & CDN

Featured Systems & Open-Source Projects

Production-grade architectures, real-world systems, and distributed platforms.

Project
Featured

Headless Portfolio & Blog Architecture

Decoupled Clean Architecture system featuring a .NET 8 Web API, Supabase PostgreSQL with RLS, Supavisor connection pooling, automated EF Core migration bundles, and Next.js 16 App Router frontend with Partial Prerendering.

.NET 8Clean ArchitecturePostgreSQLNext.js 16DockerGHCRCloudflare
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Featured

Clean Architecture Modular Engine

A production-grade, 3-layer modular architecture implementing CQRS with Vertical Feature Slices, HMAC-SHA256 JWT security, RFC 7807 ProblemDetails, and multi-language post translations.

C#EF Core 8SupabaseRFC 7807CI/CD
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High-Performance Next.js 16 Jamstack

Turbopack-powered frontend leveraging React 19 Server Components, ISR cache revalidation, client-side BFF proxying, syntax-highlighted Markdown rendering, and dynamic SEO OpenGraph metadata.

Next.js 16TypeScriptTailwind CSS v4React 19

Latest Articles & Engineering Insights

Deep dives into software architecture, .NET performance, database indexing, and DevOps.

web3
EN-US5 min read

Solidity and web3 Fundamentals

A practical guide to Ethereum Virtual Machine essentials: storage slot layout, bytecode immutability, ERC-20 vs ERC-721 token standards, and defensive testing with stateless and stateful fuzzing.

Oct 17, 2026Read article