Software Engineer
Metro Manila
Software Engineer with 11+ years of experience architecting and maintaining backend systems and APIs using Java and Spring Framework, with full-lifecycle ownership from design through production. I balance performance-driven architecture against real infrastructure budgets, modernize legacy systems in place rather than rewriting from scratch, and practice layered testing (unit, integration, end-to-end) to keep systems reliable under real production load.
TwistResources, Inc., full_time
Apr 2018 to Present
I design, build, and operate production APIs in Java/Spring, owning them end-to-end from architecture through deployment and support. Standout work: I migrated an image-processing service to AWS Serverless Image Handler, cutting incidents and significantly improving uptime, and modernized a legacy app from manual on-premise deployment to an automated AWS/GitLab CI/CD pipeline with zero downtime. I also handle API security, code quality, and observability.
Trust International Paper Corp., full_time
Feb 2015 to Jan 2018
Full-stack development and internal systems ownership across on-prem infrastructure, the ERP system, and customer-facing systems. Standout work: I built and maintained the company's in-house ERP system end-to-end using Java and Spring, and led end-to-end development of a customer ticketing system from requirements through deployment. I also set up the in-house on-premise server (CentOS, RAID, networking, Tomcat) and tuned application performance across internal systems.