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JANSON DE CASTRO

@jansondecastro

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Fullstack Engineer specializing in C#/.NET and AI-enabled solutions.

Philippines

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What I'm looking for

I seek a collaborative, Agile team where I can build scalable .NET systems, integrate AI features, strengthen automated testing, and grow into technical leadership while working with cloud-native deployments.

I am a dedicated Fullstack Engineer with deep expertise in C# and Microsoft .NET technologies, experienced in building and maintaining scalable enterprise applications and integrating front-end and back-end systems. I apply object-oriented design principles and best practices (DRY, SOLID, modular design) to deliver reliable solutions, implement automated testing with NUnit and Selenium, and manage production deployments and monitoring.

I have contributed to AI workflow creation and integrated AI capabilities to enhance automation and system functionality, collaborated in Agile/Scrum teams, and supported cloud-native deployments using Azure and AWS services. My background includes developing fullstack features, improving UI/UX with modern JavaScript frameworks, and providing technical insights during planning and design to align development with business goals.

Experience

Work history, roles, and key accomplishments

Current

Fullstack Engineer

Current

Trend Micro PH

Nov 2023 - Present (2 years 2 months)

Developed full‑stack features and integrations, refactored code for readability and scalability, implemented automated tests (NUnit, Selenium), and created AI workflows to enhance application automation and efficiency.

C++.NET Core ReactJS MSSQL NUnit Selenium Azure DevOps AWS Integration

Software Developer

Deployed Philippines Inc.

Jun 2023 - Oct 2023 (4 months)

Enhanced UI using Vue.js and Vue Material Dashboard Pro, participated in Agile stand-ups, and implemented automated testing (NUnit, Selenium) to improve reliability and UX.

Vue.Js HTML5 CSS3 MSSQL MySQL Amazon S3 DynamoDB NUnit Selenium .NET Core

Software Engineer

Accenture

Apr 2021 - Apr 2023 (2 years)

Delivered .NET features in Agile teams, created and executed test cases, monitored AKS container health, and traced microservice failures using Azure Application Insights.

C++.NET Core MVC AKS Azure DevOps Application Insights NUnit Cypress

Web Developer

Geodata Solutions Inc.

Jul 2019 - Nov 2020 (1 year 4 months)

Analyzed requirements, developed and tested front‑end and back‑end modules in ASP.NET MVC, and collaborated with QA to deliver completed modules.

C++ASP.NET MVC Entity Framework HTML CSS jQuery AJAX Bootstrap

C# Programmer

M. Ayroso Lumber and Hardware Inc.

Jun 2018 - Jul 2019 (1 year 1 month)

Designed user interfaces, performed system upgrades, ensured system and equipment communication, and maintained Windows applications built in C# with MySQL backend.