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Jay Crisostomo

@jaycrisostomo

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I build and modernize enterprise applications with C#, .NET, React.js, SQL, and REST APIs.

United States

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What I'm looking for

I'm looking to build and modernize enterprise or web applications, contribute across the full stack, solve production issues, and deliver reliable features in Agile teams.

I've built, optimized, and maintained mission-critical enterprise applications at Louisiana Farm Bureau using C#, .NET, and React.js.

I modernized legacy workflows into .NET Core architectures, delivered scalable full-stack features in Agile sprints, and worked across teams to troubleshoot production issues and optimize database performance.

Earlier at LeNgineer, I developed responsive React.js components, real-time messaging, and secure data pipelines with Firebase and MongoDB. I also programmed autonomous drone navigation and delivery logic using C++ and Python.

Experience

Work history, roles, and key accomplishments

Software Developer

Louisiana Farm Bureau

Aug 2022 - Aug 2025 (3 years)

Developed, optimized, and maintained mission-critical enterprise applications using C#, .NET, and React.js. Modernized legacy system workflows by transitioning functionality into .NET Core architectures.

C#.NET React ASP.NET Core SQL REST APIs Agile Scrum Database Optimization

Software Engineering Intern

LeNgineer

Jun 2021 - May 2022 (11 months)

Developed responsive frontend components for a mobile application using React.js, Redux, and Tailwind CSS. Built a real-time messaging system and secure data retrieval pipelines using Firebase and MongoDB.

React Redux Tailwind Firebase MongoDB JavaScript Peer Review