Skip to content
Carlos A. Negrón Serra - Senior Software Engineer

Carlos A. Negrón Serra

Senior Software Engineer (Remote)

Location: Vega Alta, PR

Email: carlosnegronserra@gmail.com

Languages: English & Spanish (Fluent)

Contact Me Download Resume LinkedIn

About

Senior Software Engineer with 10+ years of experience building, maintaining, and improving production-grade web platforms. Strong background in .NET ecosystems, Angular/Blazor, API-driven systems, and relational databases. Known for autonomy, clear communication in fully remote environments, and delivering reliable, maintainable solutions.

Core Skills

Backend

C# ASP.NET Core REST APIs Microservices SQL Server MySQL gRPC Dapper JWT/OAuth

Frontend

Blazor (WASM & Server) Angular TypeScript JavaScript HTML CSS Tailwind Component-driven architecture

Dev Practices

CI/CD Code Reviews Clean Code Azure DevOps YAML Pipelines AI-Assisted Development Technical Documentation

Platforms

Windows Linux macOS

Experience

  1. Kayros Technologies / Assertus Holdings — Senior Software Engineer

    Guaynabo, PR | 2024 - PRESENT
    • Contributed to the design, development, and maintenance of scalable, multi-tenant web applications in production environments.
    • Developed and maintained backend services and RESTful APIs using C#, ASP.NET Core, Blazor, and SQL Server.
    • Collaborated closely with product, business, QA, and DevOps teams to translate requirements into reliable technical solutions and ensure smooth deployments.
    • Improved application performance, reliability, and maintainability through refactoring, optimization, and adherence to best practices.
    • Participated in code reviews and technical discussions, supporting consistent coding standards and overall system quality.
    • Provided guidance and support to other developers through reviews and technical collaboration.

  2. Óptima Seguros — Software Developer (2022–2024)

    • Designed and maintained enterprise applications using C#, Blazor, and SQL Server.
    • Worked across the SDLC: requirements, development, testing, and support.
    • Troubleshot and resolved production issues in a timely manner.
    • Contributed to documentation and system improvements.

  3. CitaMed — Software Developer (2021–2022)

    • Developed automation platforms for appointment confirmations, scheduling, and messaging.
    • Built backend services using ASP.NET Core integrated with SMS/voice systems.
    • Supported high-volume production workflows and improved reliability.

  4. Delta Dental of Puerto Rico — Programmer Analyst (2019–2021)

    • Built and maintained internal tools supporting customer service and operations teams.
    • Developed database-driven applications using SQL Server and MS Access.
    • Automated operational workflows and data processing.

  5. Network Puerto Rico (NTPUR) — Full Stack Developer (2012–2024)

    • Delivered full-stack web solutions for multiple clients across different industries.
    • Built backend systems using PHP, Perl, and MySQL; maintained long-term client platforms.
    • Developed and supported websites, web apps, and e-commerce solutions.

Education & Learning

Contact

Email: carlosnegronserra@gmail.com