Kim Phong

Projects

Apps I've built or maintained — trading, fintech, healthcare, booking and more.

Product names are withheld for confidentiality.

Feb 2026 — Present
FlutterNode.js

A household budgeting app that links bank, credit card, brokerage and e-money accounts and shows income and spending by category.

Highlights

  • Developed the iOS/Android app in Flutter and the backend APIs in Node.js through the 2026 launch, and continue to maintain both.
  • Integrated sign-in through an in-house OIDC-based SSO (Authorization Code + PKCE).
  • Built account linking for banks, credit cards, brokerages and e-money services.
  • Designed the Git branching and release workflow around Shorebird code push and GitHub Rulesets.
Aug 2025 — Present
FlutterFCM / APNs

An online medical care app where patients find a clinic, see a doctor over video and pay in the app.

Highlights

  • Developed the iOS/Android app in Flutter, released in 2026.
  • Integrated real-time chat between patients and clinics.
  • Implemented push notifications end to end: FCM server-side sending and APNs auth key setup for Development and Production.
Jan 2025 — Present
Flutter

An app for finding and booking coworking and rental spaces on a map, with QR code check-in.

Highlights

  • Developed the iOS/Android app in Flutter through its launch and have maintained it since.
  • Integrated a card payment gateway into the booking checkout, with card details tokenized by the gateway so they never reach our own backend.
  • Optimized map search with marker clustering, keeping panning and zooming smooth.
Jul 2024 — Dec 2024
Flutter

A trading app for FX, stock indices and commodities, with real-time charts and ordering straight from the chart.

Highlights

  • Developed the iOS/Android app in Flutter during its initial development phase, ahead of its 2025 launch.
  • Optimized chart rendering for real-time price updates to keep scrolling and zooming smooth.
Jan 2024 — Jun 2024
watchOSSwiftUISwift

The Apple Watch version of a CFD trading app, for checking rates, charts and buying power and placing orders from the wrist.

Highlights

  • Built the watchOS app from scratch with SwiftUI: rates, charts, buying power, economic calendar and order placement from the watch.
  • Developed iPhone–Watch communication with WatchConnectivity, syncing account data from the iPhone app.
  • Released in 2024.
Nov 2023 — Dec 2023
SwiftUIKit

An FX trading app with real-time rates, advanced charts and ordering straight from the chart.

Highlights

  • Developed an in-app tutorial that guides first-time traders through the app's core functions, shipped in 2024.
Sep 2022 — Feb 2023
React NativeTypeScriptRedux-Saga

A mobile app for poker players in Japan, designed to make visiting and playing at poker clubs more convenient.

Highlights

  • Implemented features for the user-facing app from specifications, including a custom points-by-day graph built with react-native-svg (no chart library) and animated views with PanResponder.
  • Fixed notification issues and reviewed code.
  • Managed the mobile repository's branching strategy and release scope.
  • Set up GitLab runners and CI/CD for dev and staging, with Fastlane and DeployGate.
Sep 2022 — Feb 2023
SwiftUIKit

A rewards app that gives users points for everyday movement, such as walking, cycling, driving and taking the train.

Highlights

  • Maintained the iOS app, resolving issues raised directly by the client and implementing requested updates.
  • Built a custom home dashboard cell showing today's movement data.
  • Added deep links and dynamic links; built custom popups and sliders.
Sep 2021 — Aug 2022
LaravelSwiftSwiftUI

Preschool review and comparison platform for Vietnamese parents. Worked on it part-time as a final-year student.

Highlights

  • Backend: built a Facebook post management API for school owners and automated API documentation generation.
  • iOS: set up the project foundation and shared utilities.