Open to opportunities

Vinícius Gabriel de Souza

@vinciusgabrieldesouz

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I build and modernize .NET backend systems for ERP, manufacturing, and identity platforms.

Brazil

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What I'm looking for

I'm looking to build and modernize backend platforms where I can make technical decisions grounded in architecture, performance, and business impact. I'm also interested in AI-assisted development and LLM-based tooling.

I've built and modernized .NET systems for Karsten S.A., Bludata Software, Benner Sistemas, and Pilar Sistemas, spanning factory-floor platforms, driver education, B2B ERP, and accounting software.

At Bludata, I served as the main technical reference for a new driver-education platform, leading decisions for a three-developer team and reviewing roughly 20 pull requests per week. I designed a Redis-backed SSO using JWT and UUID, integrated AWS Rekognition Face Liveness for attendance validation, and supported the migration from SQL Server to PostgreSQL and .NET 6 to .NET 8.

For Karsten, I modernized manufacturing systems with .NET REST APIs and React interfaces, integrated real-time machine monitoring, and improved high-volume data access through indexing, caching, and Entity Framework query tuning.

Earlier, I helped evolve large-scale and multi-tenant ERPs, built SignalR notification infrastructure reused across projects, reduced a document-processing query from about 120 to 40 seconds, and implemented AWS S3 document storage. I focus on understanding architecture, performance, and business impact before writing code, while exploring AI-assisted development and LLM-based tooling.

Experience

Work history, roles, and key accomplishments

Software Engineer (Consultant)

Mouts IT

Aug 2025 - Jan 2026 (5 months)

Modernized manufacturing systems by building .NET REST APIs and React interfaces, gradually migrating Windows Forms functionality while keeping the platform stable. Built integrations with a third-party monitoring platform and optimized data access in high-volume environments.

C#.NET ASP.NET Core REST APIs React SQL Server Indexing Caching

Full Stack Developer (Backend-focused)

Bludata Software

Apr 2024 - Aug 2025 (1 year 4 months)

Led technical decisions for a three-developer team on a driver-education platform, including task prioritization, estimates, and mentoring. Designed and implemented a Redis-backed SSO and integrated AWS Rekognition Face Liveness for biometric validation.

.NET C#PostgreSQL Redis RabbitMQ AWS Kubernetes JWT UUID GitHub Actions Docker Terraform SQL Server

Backend Developer

Benner Sistemas

Mar 2023 - Mar 2024 (1 year)

Developed backend features, performance improvements, and integrations for a large-scale ERP platform with 200+ companies and 5,000+ active users. Contributed to the gradual migration of the legacy Delphi desktop system to the modern .NET web platform.

C#.NET ASP.NET Core SQL Server REST APIs

Full Stack Developer

Pilar Sistemas

Nov 2021 - Mar 2023 (1 year 4 months)

Developed web applications and APIs for the accounting sector, including a multi-tenant ERP. Designed and implemented real-time notification infrastructure with SignalR and restructured database queries to reduce execution time from ~120 to ~40 seconds.

C#.NET ASP.NET Core SignalR SQL Server PostgreSQL REST APIs