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I'm Reyhan, a Flutter Architect and Full-Stack Engineer with 6+ years of experience delivering scalable, production-grade apps for mobile and web. I specialize in Flutter, Node.js, and TypeScript, with a strong foundation in clean architecture, SOLID principles, CI/CD, and test-driven development. I’ve led complex projects end-to-end and I'm comfortable working with AWS, Firebase, and Supabase to build robust, users‑focused experiences. In addition to building great software, I enjoy exploring AI-powered tooling and developer-friendly solutions, such as app builders and real-time simulators. I thrive in collaborative environments and love turning intricate requirements into reliable, delightful products.…I'm Reyhan, a Flutter Architect and Full-Stack Engineer with 6+ years of experience delivering scalable, production-grade apps for mobile and web. I specialize in Flutter, Node.js, and TypeScript, with a strong foundation in clean architecture, SOLID principles, CI/CD, and test-driven development. I’ve led complex projects end-to-end and I'm comfortable working with AWS, Firebase, and Supabase to build robust, users‑focused experiences. In addition to building great software, I enjoy exploring AI-powered tooling and developer-friendly solutions, such as app builders and real-time simulators. I thrive in collaborative environments and love turning intricate requirements into reliable, delightful products.

Reyhan Javier

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

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I'm Reyhan, a Flutter Architect and Full-Stack Engineer with 6+ years of experience delivering scalable, production-grade apps for mobile and web. I specialize in Flutter, Node.js, and TypeScript, with a strong foundation in clean architecture, SOLID principles, CI/CD, and test-driven development. I’ve led complex projects end-to-end and I'm comfortable working with AWS, Firebase, and Supabase to build robust, users‑focused experiences. In addition to building great software, I enjoy exploring AI-powered tooling and developer-friendly solutions, such as app builders and real-time simulators. I thrive in collaborative environments and love turning intricate requirements into reliable, delightful products.…I'm Reyhan, a Flutter Architect and Full-Stack Engineer with 6+ years of experience delivering scalable, production-grade apps for mobile and web. I specialize in Flutter, Node.js, and TypeScript, with a strong foundation in clean architecture, SOLID principles, CI/CD, and test-driven development. I’ve led complex projects end-to-end and I'm comfortable working with AWS, Firebase, and Supabase to build robust, users‑focused experiences. In addition to building great software, I enjoy exploring AI-powered tooling and developer-friendly solutions, such as app builders and real-time simulators. I thrive in collaborative environments and love turning intricate requirements into reliable, delightful products.

Available to hire

I’m Reyhan, a Flutter Architect and Full-Stack Engineer with 6+ years of experience delivering scalable, production-grade apps for mobile and web. I specialize in Flutter, Node.js, and TypeScript, with a strong foundation in clean architecture, SOLID principles, CI/CD, and test-driven development. I’ve led complex projects end-to-end and I’m comfortable working with AWS, Firebase, and Supabase to build robust, users‑focused experiences.

In addition to building great software, I enjoy exploring AI-powered tooling and developer-friendly solutions, such as app builders and real-time simulators. I thrive in collaborative environments and love turning intricate requirements into reliable, delightful products.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Flutter Architect at Walturn LLC

November 1, 2025 - November 1, 2025

Led architecture and end-to-end development of production Flutter applications, including Tank Payments (YC), Social Optics, LightBridge, and Steve AI Hub. Built OS-like UI system for Steve AI Hub with windowed tools and multi-instance interfaces. Developed Vibe Studio, an AI-powered Flutter app builder with a real-time app simulator. Rebuilt Social Optics using Stacked and Cubit; implemented Supabase Edge Functions (TypeScript) and CI/CD automation. Built secure payment and transaction systems using AWS Cognito, REST APIs, and Sentry. Integrated Stripe, Apple Pay, and Google Pay using modern PaymentMethod APIs.

Senior Software Engineer at Timegap Exchange Indonesia

June 1, 2022 - June 1, 2022

Built the Timegap Flutter mobile app and AWS backend (AppSync, Lambda, Cognito, DynamoDB). Implemented real-time booking, map-based search, chat, and multi-region payments (Stripe, Xendit). Developed Firebase Cloud Functions (TypeScript) to automate notifications and background processes.

Frontend Engineer at Trimagnus Prima Dharma

July 1, 2020 - July 1, 2020

Developed dashboards and internal tools using React.js and Vue.js. Implemented modular, reusable front-end components.

Flutter Developer at Indonesia Electricity Company (Pusertif Project)

June 1, 2020 - June 1, 2020

Built certification management system including role-based workflows, inventory tracking, and document submission features.

Freelance Flutter Developer at 1 Freelance & Academic Projects

January 1, 2020 - January 1, 2020

Delivered multiple Flutter applications including Digkontrol, a fleet management and driver tracking system.