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Tri Agung Jiwandono
Open to remote roles · Yogyakarta, Indonesia

Frontend & MobileApp Engineer.

I build production interfaces across web and mobile — Flutter, React Native, Next.js — with a particular love for shipping mobile apps end-to-end.

See my workRésumé
Experience
4+ yrs
Apps shipped
10+
Platforms
iOS · Android
Tri Agung Jiwandono
TJ · Available now
FlutterReact NativeNext.jsTypeScriptDartFirebaseClean ArchitecturePWAExpoTailwind CSSGitEASShorebirdMVVMGoogle Maps APIFlutterReact NativeNext.jsTypeScriptDartFirebaseClean ArchitecturePWAExpoTailwind CSSGitEASShorebirdMVVMGoogle Maps API

01 — About

An engineer who ships.

Software Engineer with 4+ years building user interfaces for production web and mobile apps across healthcare, F&B, education, community, and financial services. Strong focus on UI implementation, frontend architecture, and cross-platform delivery. Former Mobile Team Lead — comfortable with code reviews, mentoring, and release coordination.

I led mobile delivery as Team Leader at GMEDIA, mentored interns, and ran code reviews and architecture guidance — then moved into broader frontend work at SoftwareSeni shipping for clients in healthcare, F&B, community, and education. These days I'm freelancing on Flutter products and integrating AI-assisted workflows into delivery to keep speed and consistency high.

When picking a stack I optimise for shipped reliability — a healthy bias for boring choices, careful state and session handling, and tight feedback loops with QA. I care about animation as long as it earns its weight.

Based in

Yogyakarta, Indonesia

Email

tj.triagungj@gmail.com

Open to

Open to remote roles

Toolkit

Languages & Frameworks

TypeScriptJavaScriptDartFlutterReact NativeExpoNext.jsReact.jsVue.jsIonic (Angular)Tailwind CSSLaravel (basic)Python (basic)

Architecture & Engineering

Clean ArchitectureMVVMMVCModularMonorepoREST APIsAuth & SessionsPWAService WorkersReal-timeOffline-first

Tools & Deployment

GitGitLab CIDockerFastlaneEASShorebirdFirebaseGoogle Maps APIGA4GTMTestFlightPlay StoreAI-assisted workflows

02 — Contributed Projects

Production work across industries

A selection of products I've shipped — owned UI implementation, API integration, release management, and architecture decisions end-to-end.

Healthcare

Cenz Health

SoftwareSeni client — health & nutrition

End-to-end auth, onboarding, profile, meal logging, diagnostics, and ordering modules for a cross-platform mobile health app.

  • Implemented auth, onboarding, profile, meal logging, diagnostics, and ordering
  • Owned API integration, edge-case validation, and UAT-driven stability fixes
React NativeExpoEAS
App Store

F&B

32do

SoftwareSeni client — restaurant ordering

PWA + Kitchen Display System for restaurant ordering. Improved cart, checkout, payment, and modular project structure.

  • Enhanced cart, checkout, payment, auth, and session reliability
  • Built order management for the Kitchen Display System
Next.jsPWATypeScript
Web

ISP

Fiberstreamku

GMEDIA — ISP self-service

Major revamp of an ISP customer self-service app: billing, payments, monitoring, real-time push, and Shorebird in-app updates.

  • Contributed to billing, payments, service monitoring, and notifications
  • Implemented real-time push notification delivery
FlutterShorebirdFirebase
App Store Play Store

Other

Visitorku

GMEDIA — visitor management

Visitor registration and validation flows with facial recognition; on-site check-in stability improvements.

  • Implemented visitor registration and validation flows
  • Improved on-site check-in stability
FlutterShorebird
App Store Play Store

More work

  • Escape Nomade

    Freelance — premium tent supplier · Full UI implementation across 3 user roles for a service flow covering design, consultation, manufacturing, delivery, installation, and maintenance. Delivered 3 role-based UIs (Fans, Client, Ambassador) in ~4 weeks

    FlutterDart

  • Sista Indonesia

    SoftwareSeni client — community PWA · Real-time DM, live notifications, offline mode, and analytics for a community-based PWA.

    Next.jsQiscus SDKPWA

  • Tribun Academy

    SoftwareSeni client — online courses · Course management features — chapters, subchapters, lesson flow, PDF viewer — plus checkout reliability fixes.

    Next.jsTypeScript Web

  • Tirta

    SoftwareSeni — white-label medical product · Reusable UI modules and modular architecture improvements for a white-label medical app deployed across multiple clients.

    FlutterMonorepo

  • DifaBike

    GMEDIA — ride-related app · Real-time order synchronization, reusable components, and Android/iOS production releases for a ride-related mobile app.

    FlutterGoogle Maps API Play Store

  • Joyful Space Booking

    GMEDIA — space reservations · Booking creation, modification, cancellation, check-in/out flows, plus reminder & notification features.

    Flutter App Store Play Store

03 — Experience

My Journey

  1. March 2026 — Present · Remote

    Software Engineer

    Freelance

    Working with a remote client delivery team on Flutter mobile apps. Responsible for architecture planning, stack decisions, and AI-assisted delivery during early-stage product development.

    • Delivered Escape Nomade end-to-end across 3 user roles in ~4 weeks
    • Planned application architecture and stack from the ground up
    • Prepared the application for backend integration

  2. March 2024 — March 2026 · Yogyakarta, Indonesia

    Software Developer

    SoftwareSeni — PT Software Service Indonesia

    Delivered product features for company and client projects across healthcare, F&B, community, education, and financial services. Authored guidelines to standardize AI-assisted workflows across teams.

    • Cenz Health (RN/Expo): auth, onboarding, meal logging, diagnostics, ordering; managed Android/iOS releases
    • 32do (Next.js PWA): cart/checkout/payment overhaul; Kitchen Display System; modular refactor
    • Sista Indonesia (Next.js + Qiscus): real-time DM, live notifications, offline mode
    • Tribun Academy, Tirta, and a confidential Ionic Angular + Laravel project

  3. September 2023 — November 2025 · DI Yogyakarta, Indonesia

    Master of Information Technology — Business Intelligence

    Education

    University of Technology Yogyakarta

    • GPA 3.53
    • Thesis: Stock Market News Sentiment Analysis with Fine-Tuned IndoBERT
    • Scopus Q4 journal manuscript accepted

  4. September 2022 — February 2024 · Sleman, Indonesia

    Mobile Team Leader

    GMEDIA — PT Media Sarana Data

    Led the mobile development team at GMEDIA. Responsible for code reviews, mentoring interns, architecture guidance, and coordinating delivery across multiple products.

    • Led mobile team and supervised interns; ran code reviews and architecture guidance
    • Coordinated task distribution, monitored progress, and ensured timeline + quality
    • Shipped Fiberstreamku (billing, payments, monitoring, Shorebird in-app updates)

  5. March 2022 — August 2022 · Sleman, Indonesia

    Mobile Developer

    GMEDIA — PT Media Sarana Data

    Hired full-time at GMEDIA (sister company of VARX) as a Mobile Developer. Contributed to Flutter app development using Clean Architecture and CI/CD pipelines.

    • Applied Clean Architecture, MVVM; Firebase, Google Maps, GitLab CI, Fastlane
    • Shipped Visitorku, Joyful Space Booking, and Mejaseni

  6. September 2021 — February 2022 · Sleman, Indonesia

    Mobile Developer Intern

    VARX — PT Media Sarana Akses

    Started career as a Mobile Developer Intern building Flutter apps. Learned production mobile development practices and contributed to live product features.

    • Built features for DifaBike — a mobility/rental app in Flutter
    • Practiced Clean Architecture and MVC under senior developer guidance

  7. September 2018 — December 2022 · DI Yogyakarta, Indonesia

    Bachelor of Informatics

    Education

    University of Technology Yogyakarta

    • GPA 3.75
    • Best Graduate Student, Period II, AY 2022/2023
    • Thesis: Genetic-algorithm scheduling app — Laravel + Vue.js + Flutter

04 — Writing

Notes from the build.

Short essays on shipping mobile and web — architecture, animation, and the boring decisions that make products feel fast.

All posts

May 4, 2026

Your App Should Know How to Talk

Most apps nail the happy path but go silent when things get slow, empty, or broken. Here's how to handle loading, error, empty, and success states — and why good UI is a conversation, not a monologue.

#frontend#ux#react

April 30, 2026

API Spec Dulu, Baru Ngoding: Prinsip Lama yang Makin Relevan di Era AI

Selesai mengerjakan UI yang rapi, lalu ternyata struktur API backend-nya berbeda dari asumsi awal. Cerita ini terjadi di hampir setiap project tanpa API Contract. Inilah mengapa menulis spec dulu justru menghemat lebih banyak waktu — terutama di era AI.

#api#clean architecture#frontend