Tech Lead @ ForU AI, Singapore · Building mobile apps since 2015

Yusuf Fachroni, Senior Mobile Engineer & Tech Lead

I lead the engineering of mobile products people actually keep. Building mobile apps since 2015, shipping Flutter and native Android for AI & Web3 startups, fintech, telecom and government. From first commit to 5★ store listings and 500K+ active users.

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Focus
Flutter · Android · Mobile architecture
Leadership
Tech Lead, 2 AI & Web3 startups
Founder
Founder & Product Engineer, PaperPlay Studio

01 · Selected work

Flagship products, led end to end.

Since 2024Singapore · AI × Web3

ForU AI

Tech Lead & Senior Mobile Engineer

An AI-powered identity app combining decentralized identity (DID) and blockchain so users own, verify and monetize their digital reputation with badges, rewards and the $FORU token ecosystem. I lead the tech team across mobile and the ForU Chrome extension, and own technical documentation and delivery.

  • 10K+ downloads
  • 4.9★ Google Play
  • iOS + Android
  • Flutter
  • GetX
  • Firebase suite
  • Flavors
  • SSL Pinning
  • Web3 / DID
foruai.io

2023 to 2024Singapore · AI Marketplace

Untukmu AI

Tech Lead & Senior Mobile Engineer

An AI gift-giving marketplace built from zero: smart reminders, AI gift suggestions and one-tap sending for personal and corporate gifting. I led requirements analysis with the business, architected the app and shipped it to both stores.

  • 50K+ active users
  • 5.0★ both stores
  • Built from scratch
  • Flutter
  • GetX
  • Socket.IO
  • Google Maps
  • Apple & Google Sign-In
  • SSL Pinning
untukmu.ai

2022 to 2023Jakarta · Fintech

CFund Asia

Senior Mobile Engineer

A crypto investment app where users buy products with different capital, top-up minimums, locking periods and risk/return profiles. Owned the Flutter client, GraphQL integration with backend, and translated advanced UI/UX designs into a secure, high-trust financial experience.

  • Fintech-grade security
  • GraphQL API
  • Real-time charts
  • Flutter
  • Riverpod
  • Flutter Hooks
  • GraphQL
  • FL Chart
  • SSL Pinning

PaperPlay StudioFounder · EdTech

Advanced English Dictionary

Founder & Lead Developer

An AI-powered English to Indonesian dictionary: offline & online translation of text, photos and audio, advanced grammar checks, TOEFL practice with thousands of questions and progress charts. Part of a studio portfolio of 20+ apps with up to 500K downloads.

  • Offline-first
  • AI grammar
  • Self-funded product
  • Flutter
  • GetX
  • Firebase
  • Google Sign-In
  • AdMob
Google Play

02 · Archive

More shipped work.

Nine more products across public health, mining, public safety and government, plus consumer apps with 100K+ downloads.

  1. 01

    Government

    E-Sakip

    Performance management and reporting for Malang District’s Housing & Settlement Agency.

    Flutter · GetX · FCM

  2. 02

    Public health

    Sutera Emas

    Community-based epidemiological surveillance for the Malang District Health Office, with real-time PHEIC monitoring.

    Kotlin · MVVM · Maps

  3. 03

    Mining

    Coal Mine Management

    Production & haulage status, shipments, customer balances and void approvals for PT Lestari Cipta Persada.

    Flutter · BLoC · FCM

  4. 04

    Public safety

    GO Sigap

    Panic-button app for Gresik Police: online/offline emergency calls, SIM & SKCK registration, Jitsi video calls.

    Android Java · Maps · Jitsi

    Watch on YouTube
  5. 05

    Environment

    Klinik Hutan

    Forest condition monitoring with geo-tagged reports, documents and discussion threads.

    Android Java · Push

  6. 06

    Game · 100K+

    Kuis Cerdas Cermat

    Trivia game with hundreds of questions across subjects and levels. 100K+ downloads.

    Unity3D · C# · AdMob

    Google Play
  7. 07

    Game · 100K+

    Kuis Tebak Tebakan

    A riddle game for all ages with five progressive levels. 100K+ downloads.

    Unity3D · Illustrator

    Google Play
  8. 08

    Health

    Drug Dictionary

    Medication reference covering dosage, interactions, toxicity and metabolism for healthcare pros.

    Android Java · SQLite

    Google Play
  9. 09

    Health

    Resep Obat Tradisional

    Offline library of traditional herbal remedies.

    Android Java · SQLite

    Google Play
All PaperPlay Studio apps on Google Play

03 · Achievement deck

The story in ten slides.

Education, the studio I founded, a decade of roles and the projects I’m proudest of. Keep scrolling to flip through it, or use the arrows.

01Achievement deck

Yusuf
Fachroni

Technical Lead · Senior Mobile Engineer

10+ yrs20+ apps500K+ downloads

02Executive summary

A decade of shipping mobile products.

10+years of software engineering
8+years of mobile development
6+years of Flutter
3+years as Technical Lead for an AI marketplace & Web3
20+mobile apps delivered on Android & iOS

Experience spanning startups, enterprise, government, fintech, AI, Web3 and freelance consulting.

End-to-end product ownership, from architecture and development to deployment and maintenance.

03Education journey · 2011 to 2016

Universitas Muhammadiyah Malang.

  • Student and laboratory assistant.
  • Champion and finalist titles in national technology competitions.
  • Graduated cum laude with a GPA of 3.8 / 4.0 and invited as a speaker at campus events.

04Founder journey

PaperPlay Studio.

  • Built 20+ mobile apps & games with 500K+ downloads.
  • Learned product development, publishing and monetisation.
  • Featured by Tech in Asia, detikINET and other media.
  • Received several awards.

05Career journey · part 1

From indie studio to national scale.

  1. 1

    2014

    Opened the PaperPlay Studio developer account: 20+ apps & games, 500K+ downloads, Intel Top Developer.

  2. 2

    2016 to 2017

    Joined Brixzen and built the GO Sigap panic-button app for the Police Department.

  3. 3

    2017 to 2021

    PT Exel Sistem Solusindo: MyAds & mobile banking for Telkomsel, forest monitoring for government.

  4. 4

    2017 to 2022

    Unimasoft (freelance): apps for the National Public Health Office.

06Career journey · part 2

Fintech, AI and Web3.

  1. 5

    2022 to 2023

    Senior Mobile Developer at a crypto hedge fund, building cryptocurrency financial apps.

  2. 6

    2023

    Untukmu AI Pte Ltd (Singapore): launched an app with 50K+ downloads and a 5★ rating.

  3. 7

    2024

    Tech Lead & Senior Mobile Developer for AI & Web3: the ForU AI app and Chrome extension.

07Career highlight

Untukmu AI.

4.9★store rating50Kdownloads
  • Technical Lead: requirement analysis, team collaboration, technical planning and engineering coordination.
  • Developed the Flutter application.
  • Prepared the technical documentation.

08Career highlight

ForU AI.

  • Led the tech team: requirement analysis & technical planning.
  • Developed the Flutter app & Chrome extension.
  • Kept the monthly tech cost in check.
  • Team collaboration & coordination.
  • Supported deployment activities.

09Project highlight

GO Sigap.

10Kusers handled1engineer, end to end
  • Sole mobile developer of the panic-button app for Polres Gresik.
  • Designed the UI/UX.
  • Appreciated by former Indonesian President Joko Widodo.

10Thank you

Let’s build
what’s next.

Get in touch Download CV
01 / 10

04 · Writing

My articles on Medium.

All articles on Medium