Senior Software Engineer
Senior Full-Stack Ruby on Rails Engineer with 6 years+ experience. I architect and optimize backend systems that handle millions of requests, process billions of records, and directly impact business outcomes. My work spans complex financial engines, multi-tenant architectures, PCI-compliant payment systems, and legacy modernization projects that enable early market launches and enterprise acquisitions.
What I Deliver:
• 60% reduction in page load times through PostgreSQL optimization, table partitioning, and raw SQL migration • Sidekiq job failure rates reduced from 25% to under 2% using ActiveJob workflows with DLQ support • 30% infrastructure cost savings through AWS migration (Heroku to AWS via Terraform) • Scrapers processing billions of records monthly, winning major client contracts (LegitScript/Shopee) • Multi-tenant commission engine handling 300% more traffic without additional infrastructure (Concert Finance)
Recent Impact:
• At YourParsley, I independently managed a 2.5+ year project with no guidance, migrating legacy PHP/Perl to Rails/TypeScript. This enabled early go-to-market launch and helped secure client funding. Employers recognized my work for "taking ownership" and delivering "practical, well-rooted solutions." • At Omise Chargeback, I built PCI-compliant payment infrastructure that saved ฿200K-฿500K monthly from APM fraud and reduced manual operations by 20-40 hours per month. Tech Stack: • Ruby on Rails (4-7), Python (FastAPI, Django), React/TypeScript, PostgreSQL, Redis, Elasticsearch, AWS (EC2, RDS, Lambda, Terraform), Kubernetes, Sidekiq, Kafka, Microservices, CI/CD (CircleCI, Jenkins), TDD/BDD (RSpec, Cypress, Playwright)
What Sets Me Apart:
• AWS Certified Solutions Architect with deep infrastructure optimization experience • C2-level English fluency with 3+ years direct U.S. client collaboration • Two-time Employee of the Quarter for outstanding project delivery • Comfortable working across US, Europe, and Asian time zones
I solve real business problems through scalable, maintainable systems that remain resilient under production pressure.
Skills
Employment History
No employment history.
Education
No education history.