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Senior Full Stack Engineer with 8+ years of experience building scalable web applications, with a strong focus on backend systems, REST APIs, and cloud architecture across AWS and Azure. I’ve led teams and delivered performance improvements for large-scale search and analytics. I’m currently working as a freelance full stack developer for international clients, integrating modern frontend frameworks, robust backend services, Docker-based deployments, CI/CD, and LLM/OpenAI-powered features to ship reliable products end-to-end.…Senior Full Stack Engineer with 8+ years of experience building scalable web applications, with a strong focus on backend systems, REST APIs, and cloud architecture across AWS and Azure. I’ve led teams and delivered performance improvements for large-scale search and analytics. I’m currently working as a freelance full stack developer for international clients, integrating modern frontend frameworks, robust backend services, Docker-based deployments, CI/CD, and LLM/OpenAI-powered features to ship reliable products end-to-end.

Jayson Balingbing Vista

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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Senior Full Stack Engineer with 8+ years of experience building scalable web applications, with a strong focus on backend systems, REST APIs, and cloud architecture across AWS and Azure. I’ve led teams and delivered performance improvements for large-scale search and analytics. I’m currently working as a freelance full stack developer for international clients, integrating modern frontend frameworks, robust backend services, Docker-based deployments, CI/CD, and LLM/OpenAI-powered features to ship reliable products end-to-end.…Senior Full Stack Engineer with 8+ years of experience building scalable web applications, with a strong focus on backend systems, REST APIs, and cloud architecture across AWS and Azure. I’ve led teams and delivered performance improvements for large-scale search and analytics. I’m currently working as a freelance full stack developer for international clients, integrating modern frontend frameworks, robust backend services, Docker-based deployments, CI/CD, and LLM/OpenAI-powered features to ship reliable products end-to-end.

Available to hire

Senior Full Stack Engineer with 8+ years of experience building scalable web applications, with a strong focus on backend systems, REST APIs, and cloud architecture across AWS and Azure. I’ve led teams and delivered performance improvements for large-scale search and analytics.

I’m currently working as a freelance full stack developer for international clients, integrating modern frontend frameworks, robust backend services, Docker-based deployments, CI/CD, and LLM/OpenAI-powered features to ship reliable products end-to-end.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Japanese

Intermediate

Work Experience

Freelance Full Stack Engineer at Self-Employed

April 1, 2026 - Present

Building and maintaining full-stack web applications for international clients using Angular, Symfony (PHP), and Twig. Developing frontend components, backend REST APIs, and third-party integrations to support evolving product requirements. Integrating OpenAI API and LLM-powered features into client applications. Improving performance, reliability, and code quality across client codebases, with Docker-based deployments and CI/CD pipelines.

Senior Full Stack Developer / Frontend Lead Developer at Aidma Holdings

March 1, 2021 - March 31, 2026

Built shared React and Vue.js UI libraries used across 5+ products, reducing feature build time by ~30%. Grew to Lead Developer in 2 years; managed a team of 5+ engineers and improved sprint output by ~25%. Improved Elasticsearch search across 50M+ records, cutting response time from ~2s to under 300ms.

Full Stack Developer / Backend Lead Developer at Openfair

July 1, 2018 - February 28, 2021

Built backend for an AI-powered business marketplace using Node.js, Firebase, and Elasticsearch. Set up BigQuery pipelines processing millions of events monthly, cutting manual reporting by 60%. Introduced code review practices that reduced post-release bugs by ~40% in the first quarter.