Flutter Developer - Mobile Applications
First seen by Alion on Oct 27, 2026.
Why This Role Exists:
Most of our traders will live on their phones. They'll check positions between meetings, place an order from a cab and watch an option chain tick during market open. On mobile, a lagging price or a frozen order screen at 9:15 isn't a minor glitch, it's a missed trade. We need someone who can build an app that stays fast, accurate and steady when the market is at its busiest.
What You'll Own:
- Core trading screens: watchlists, stock pages, option chain, order entry, positions, holdings and P&L, built for speed and one-handed use
- Real-time data layer: WebSocket streams for live prices, order updates and alerts, with reconnection logic, subscription management and smooth handling of patchy mobile networks
- AI on mobile: the chat interface where traders ask questions and get answers as live cards, charts and widgets
- Charts and visualisation: fast, readable charts and payoff diagrams that hold up on smaller screens
- App performance: smooth scrolling on long lists, low startup time, sensible memory and battery use, and no dropped frames during market hours
- Release and quality: clean builds and releases on Play Store and App Store, crash monitoring, and working closely with QA on every release
What We're Looking For:
- 5 - 7 years building mobile apps, with at least 2 years of production Flutter and Dart. Apps you've shipped that are live on both stores
- Solid state management at scale with Riverpod or Bloc. You know why you picked one over the other
- Real-time experience: WebSockets, streams and keeping the UI responsive while data updates every second
- A clear understanding of how Flutter renders, and the habit of profiling before guessing at a slowdown
- Comfort with platform channels when you need native Android or iOS features
- Design sense. You can take a Figma file and make it feel better on an actual device
Bonus Points:
- Experience building a trading, broking or fintech app
- You trade yourself
Skills
Flutter, Dart, Android, iOS, Figma, Mobile App Architecture