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Hi, I’m Rayhan Syah, a Software Engineer with 4+ years of experience designing, building, and operating enterprise-grade apps across mobile and backend platforms. I specialize in Flutter, Kotlin, and backend development, with a strong foundation in Clean Architecture, modular systems, and production observability. I have a proven track record owning live systems, integrating REST and real-time services, reducing production incidents through automated monitoring pipelines, and delivering end-to-end solutions from system design to production release.…Hi, I’m Rayhan Syah, a Software Engineer with 4+ years of experience designing, building, and operating enterprise-grade apps across mobile and backend platforms. I specialize in Flutter, Kotlin, and backend development, with a strong foundation in Clean Architecture, modular systems, and production observability. I have a proven track record owning live systems, integrating REST and real-time services, reducing production incidents through automated monitoring pipelines, and delivering end-to-end solutions from system design to production release.

Rayhan Syah

Web Developer, Back-End Developer, Front-End Developer, +2

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Hi, I’m Rayhan Syah, a Software Engineer with 4+ years of experience designing, building, and operating enterprise-grade apps across mobile and backend platforms. I specialize in Flutter, Kotlin, and backend development, with a strong foundation in Clean Architecture, modular systems, and production observability. I have a proven track record owning live systems, integrating REST and real-time services, reducing production incidents through automated monitoring pipelines, and delivering end-to-end solutions from system design to production release.…Hi, I’m Rayhan Syah, a Software Engineer with 4+ years of experience designing, building, and operating enterprise-grade apps across mobile and backend platforms. I specialize in Flutter, Kotlin, and backend development, with a strong foundation in Clean Architecture, modular systems, and production observability. I have a proven track record owning live systems, integrating REST and real-time services, reducing production incidents through automated monitoring pipelines, and delivering end-to-end solutions from system design to production release.

Available to hire

Hi, I’m Rayhan Syah, a Software Engineer with 4+ years of experience designing, building, and operating enterprise-grade apps across mobile and backend platforms. I specialize in Flutter, Kotlin, and backend development, with a strong foundation in Clean Architecture, modular systems, and production observability.

I have a proven track record owning live systems, integrating REST and real-time services, reducing production incidents through automated monitoring pipelines, and delivering end-to-end solutions from system design to production release.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

Indonesian

Fluent

English

Advanced

Work Experience

Mobile Engineer at PT Synapsis Sinergi Digital

May 1, 2024 - Present

Designed and maintained the architecture of a multi-module SuperApp serving 1,000+ active users across multiple business domains. Delivered new production modules end-to-end, including the Business Travel Request (BTR) system, from requirements analysis to release. Integrated ML-based face recognition attendance validation to prevent fraudulent on-site check-ins and improve data integrity. Built real-time chatbot features using WebSocket collaboration with the AI engineering team. Improved long-term maintainability through modularization, Clean Architecture, and BLoC / Cubit state management patterns. Reliability, Observability & Incident Response: Owned maintenance and production support for five live applications (Quality Health Safety and Environment App, Fleet Management System, RAA, 001M, and Madhani One App), resolving critical bugs and continuously improving application stability. Improved Crashlytics monitoring and structured logging to detect high-impact crashes and prioritize

Software Developer at PT Innovasi Bakti Nusantara

November 1, 2021 - May 1, 2024

Developed two production mobile apps (Putter and MHC) from scratch, covering UI/UX design, architecture, and backend integration. Implemented reservation, scoring, and operational features optimized for club-level usage across iOS and Android. Managed full release cycles on Google Play and App Store, including build configuration, signing, and submission. Maintained and enhanced the “Tanjidor” PPO B App by restructuring the native Android Kotlin with 5000+ users.

Website Developer at Djogodev Klaten

March 1, 2021 - December 1, 2022

Developed customized WordPress websites, landing pages, and CMS components according to client needs. Improved SEO performance through structured content optimization and analytics monitoring. Created UI/UX wireframes and prototypes to refine user journeys and interface clarity.

Website Developer Intern at CV Karya Hidup Sentosa

October 1, 2020 - March 1, 2021

Contributed to ERP system development, including absence management, illness reporting, and Kaizen features. Wrote and optimized SQL queries (PostgreSQL & MySQL) for performance and reliability. Implemented features using PHP, JavaScript, Bootstrap, and CodeIgniter within the internal development workflow.