Open to opportunities

Leon Lee

@leonlee1

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Senior Full Stack Engineer specializing in backend systems, cloud delivery, and frontend integrations.

Philippines

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What I'm looking for

I seek roles where I can own backend and platform delivery, mentor teams, work remotely within cross-functional squads, and improve reliability and scalability through cloud-native practices.

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.

Ruby on Rails Node React TypeScript AWS Docker Kubernetes CI CD

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.

PostgreSQL MySQL RESTful APIs React React Native AWS Performance Tuning RBAC

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.