Leon Lee
@leonlee1
Senior Full Stack Engineer specializing in backend systems, cloud delivery, and frontend integrations.
What I'm looking for
I am a Senior Full Stack Engineer with 8+ years building SaaS products across backend services, web apps, mobile integrations, and cloud infrastructure. I bring strong backend expertise in Ruby on Rails, Node.js, Python and API architecture combined with frontend delivery using React and TypeScript.
I've designed and maintained RESTful APIs and shared service modules used by web and mobile clients, shipped React Native features, and improved release reliability through Docker, Kubernetes, and CI/CD pipelines on AWS.
At previous roles I reduced endpoint latency by ~35% through query tuning and optimizations, helped sustain ~99.8% uptime through improved operations, and implemented secure RBAC and audit-friendly workflows for sensitive data domains.
I prioritize ownership, mentoring, disciplined code review, and clear remote collaboration with cross-functional teams to deliver reliable production software and grow engineering capability.
Experience
Work history, roles, and key accomplishments
Senior Full Stack Engineer
Golden Owl Solutions
Nov 2022 - Jun 2025 (2 years 7 months)
Built multi-industry web platforms and SaaS features with Ruby on Rails and Node.js backends and React/TypeScript frontends; managed AWS-based containerized delivery and CI/CD to improve release reliability and engineering quality.
Software Engineer
Medgate Philippines
May 2020 - Oct 2022 (2 years 5 months)
Developed and optimized backend services and REST APIs for high teleconsultation demand, reducing latency ~35% and helping sustain ~99.8% uptime through improved DB tuning and AWS operations.
Software Developer
CoreProc Inc
Apr 2017 - Apr 2020 (3 years)
Delivered full-stack solutions using PHP/Laravel, JavaScript, and SQL databases; customized WordPress/WooCommerce sites, built REST APIs, and maintained Docker-based deployment and support workflows.
Education
Degrees, certifications, and relevant coursework
Technological University Dublin
Bachelor of Science, Computer Science
2012 - 2016
Completed a Bachelor of Science in Computer Science focusing on software development and systems from September 2012 to November 2016.
Availability
Location
Authorized to work in
Job categories
Skills
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