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Senior Flutter Developer – Real-Time / Trading Systems

First Demat

5 - 10 years

Mumbai

Posted: 02/03/2026

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Job Description

Were Hiring: Senior Flutter Developers (38 Years)


Company: First Demat

Location: Mumbai / WFH

Open Positions: 4

Joining: Immediate

Compensation: Competitive Salary + ESOPs


About First Demat

First Demat is building a next-generation stock trading and investment platform designed for serious traders and long-term investors.

Our platform focuses on real-time market data, ultra-low latency execution, portfolio analytics, and AI-powered insights.


Role Overview

We are hiring Senior Flutter Developers (38 years) to join our core engineering team and build high-performance, real-time trading applications for Android, iOS, and Web.

This role is for engineers who have hands-on experience building production-grade Flutter apps with real-time data and performance-critical UI.


Key Responsibilities

  • Design, develop, and maintain high-performance Flutter applications
  • Build real-time features using WebSockets (market feeds, trades, alerts)
  • Integrate REST APIs and high-frequency data streams
  • Optimize applications for low latency and smooth UI rendering
  • Handle large data volumes with continuous UI updates
  • Collaborate closely with backend, product, and design teams
  • Review code, enforce best practices, and mentor junior developers


Required Skills & Experience

  • 38 years of professional Flutter development experience
  • Strong proficiency in Flutter and Dart
  • Proven experience with WebSockets and real-time data streams
  • Expertise in state management (BLoC, Riverpod, Provider)
  • Experience handling high-frequency UI updates and large datasets
  • Strong knowledge of performance optimization and memory management
  • Experience debugging and maintaining production applications


Preferred / Nice to Have

  • Fintech, stock trading, brokerage, or WealthTech experience
  • Apps published on Play Store / App Store
  • Familiarity with AWS, GCP, or Azure
  • Experience with GraphQL, microservices, or CI/CD pipelines


Why Join First Demat

  • Build a real-time trading platform from scratch
  • Competitive salary with ESOP opportunities
  • Work directly with the founding engineering team
  • High ownership and impact as part of the early core team
  • Opportunity to solve complex, performance-critical engineering problems


Important Note for Applicants

Please apply only if you have worked on real-time or WebSocket-based Flutter applications in production.

Profiles without relevant Flutter experience may not be considered.


Application Instructions

While applying, please include:

  • Your total Flutter experience
  • One real-time / high-performance Flutter project youve worked on
  • Play Store / App Store link or GitHub profile (if available)

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