Designed and developed a full-stack social media and job-matching platform with real-time chat (WebSockets), live alerts (Server-Sent Events), and email automation; built modular REST API with Express and Prisma; implemented JWT-based authentication and authorization; deployed on a Linux VPS with Nginx and PM2.

Senior Software Engineer at OpenSpec

April 1, 2022 - September 30, 2022

Designed and implemented scalable APIs for the Openspec Core product using JavaScript, TypeScript, Next.js, Prisma, and Apollo GraphQL; contributed to an AI-powered project management platform; integrated Figma, Notion, and Slack; developed relational data models with Prisma and PostgreSQL; helped build AI-assisted task recommendations.

Senior Software Engineer (Tech Lead) at CSDC

August 1, 2018 - February 29, 2020

Led platform improvements, replaced SOAP-based APIs with REST; redeveloped e-Government modules (E-Receipts, TIN, TCC, Payee, and Foreign Receipt); improved uptime and performance; stabilized backend with Spring Boot and Hibernate; architected multi-database support (MSSQL, Oracle, PostgreSQL); implemented CI/CD workflows and automated deployments on Linux VPS with Nginx; mentored junior developers.

Software Engineer at Fifthworld Inc

October 1, 2016 - June 30, 2018

Contributed to the Open Land Administration System; digitized CofO processes and built customer-facing portals for online CofO applications and land title searches; integrated GeoServer for geospatial visualization; automated JasperReports for reporting; led feature delivery and mentoring.