John Aldrin Santos

I’m a Senior Software Engineer with 7+ years of experience building, enhancing, and supporting mission-critical banking and financial systems. I take full ownership—from requirements analysis to production support—especially in regulated, reliability-focused environments.

At GDS LINK in Makati City, I’ve served as a technical owner for Loan Origination, Appraisal, and Credit Decision systems used in live production by Taiwan’s largest private bank, along with banking clients across Thailand and the Philippines. I also supported front-end system designs for US and UK banking clients.

I lead end-to-end delivery including system design, development, deployment, and post-production support. I built and optimized data warehousing pipelines using MySQL, SQL Server, SSIS, and Lua, and developed credit risk aggregation logic consolidating multiple Philippine credit bureau sources for applicant scoring.

I’m known for “wearing multiple hats”—developer, system analyst, technical lead, and client-facing consultant. I deliver real-time credit validation and reporting through REST API integrations with JWT Authentication and RSA encryption, and I continuously improve performance through database tuning, query optimization, and rigorous production issue triage.