J
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Joao Victor
From Brazil
$17/hr or $40,000/yr

Active now


Member since Sep 2026

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Mid-level Backend Engineer

Back-end Engineer
Available for hire
Years of experience
4+ years
Experience level
Mid-level
Available for
Full-time, Part-time, Contract, Internship
Available from
30 Sep 2026

Backend .NET Engineer with 4+ years of experience in software development, building web applications, enterprise systems, and APIs using C#, .NET, ASP.NET Core, Angular, and TypeScript.

Throughout my career, I have worked on the development and maintenance of enterprise systems, building REST APIs with ASP.NET Web API, Entity Framework, PostgreSQL, and SQL, as well as maintaining system integrations and implementing business logic. I focus on delivering secure, scalable, reliable, and well-documented APIs, with close attention to performance and consistency.

On the frontend, I have professional experience with Angular and TypeScript, developing user interfaces, reusable components, and API integrations. This full-stack experience allows me to work end-to-end and understand both frontend requirements and API design and contracts on the backend.

I also have experience with Docker, Redis, AWS, Azure, Git, CI/CD, modular architectures, and Domain-Driven Design (DDD), as well as troubleshooting, database optimization, and developing cloud-oriented applications.

Stack: C# • .NET • .NET Framework • ASP.NET Core • Web API • REST APIs • Entity Framework • PostgreSQL • SQL • Redis • Angular • TypeScript • Docker • AWS • Azure • Azure DevOps • CI/CD • Git

My primary focus is backend development with C#/.NET and API design and development, while maintaining solid Full Stack experience with Angular.

Employment History

Backend Engineer – .NET/C# at DeMaria Software 2026 - 2026
• Maintain and modernize a business-critical platform supporting civil registry, notarial, financial, reporting, and digital sealing operations. • Refactor a large C# and .NET Framework codebase, preserving complex business behavior while improving maintainability and component reuse. • Deliver features across multiple business modules, including legal document generation, financial operations, digital sealing, and reporting. • Design parameterized parsers and dynamic document templates that automate data substitution in complex legal documents and reports. • Develop PostgreSQL queries, migration scripts, data validations, and RDLC reports while troubleshooting complex production and legacy-system issues. Tech Stack: C#, .NET Framework, WinForms, PostgreSQL, SQL, RDLC, Git.
Backend Engineer – .NET/C# at Trindtech 2025 - 2026
• Designed and delivered an end-to-end student contract management system using .NET, Entity Framework, PostgreSQL, and Redis. • Automated contract approval and restitution workflows, reducing processing time by 15x and substantially decreasing manual operations. • Improved monitoring-screen response time by 65% and reduced peak server load by 85% through PostgreSQL query optimization, strategic indexing, and distributed caching. • Developed REST APIs and containerized services with Docker, ensuring consistent environments across development, staging, and production. • Automated deployments and infrastructure provisioning using AWS, Terraform, and CI/CD pipelines, contributing to 30% faster delivery cycles. Tech Stack: C#, .NET, Entity Framework, PostgreSQL, Redis, Docker, AWS Lambda, Terraform, REST APIs, CI/CD.
Frontend Engineer - Angular/Typescript at Salux Technology 2023 - 2025
Developed Angular and TypeScript features for hospital management systems used by healthcare professionals in underserved and rural regions of Brazil. • Built reusable UI components and optimized digital prescription workflows, reducing prescription processing time by 48%. • Implemented real-time integration with Brazil’s Unified Health System, improving patient data exchange and reducing clinical record errors. • Created real-time clinical dashboards that helped healthcare professionals monitor patient information and make faster decisions. • Applied Angular lazy loading and RxJS optimizations, reducing application load time by 50% for users with limited internet connectivity. Tech Stack: Angular, TypeScript, RxJS, C#, Oracle Database, Azure, Clean Architecture.

Education

No education history.