Flutter Developer / Senior Flutter Developer

Flutter Developer / Senior Flutter DeveloperAbout First DematFirst Demat is building a next-generation stock trading and investment platform focused on speed, reliability, and exceptional user experience. Our engineering team develops performance-critical mobile applications powered by real-time market data, WebSocket communication, ultra-low latency order execution, portfolio analytics, and AI-powered investing.We're expanding our Flutter engineering team and hiring across multiple experience levels — from Flutter Developers to a Lead Mobile Engineer. Whether you're looking to grow as a Flutter developer or ready to lead our mobile platform's technical direction, we'd love to hear from you.Location - Mumbai (Hybrid)Open Positions- Flutter Developer — 2-4 years — 2 openings- Senior Flutter Developer — 5-7 years — 1 opening- Lead Mobile Engineer (Flutter) — 8+ years — 1 openingWhat You'll Build- Real-time market data streaming- Trading and order execution- Portfolio analytics- AI-powered investing features- Live charts and market updates- High-frequency UI rendering- Low-latency mobile experiencesTech StackFlutter, Dart, WebSockets, REST APIs, Riverpod/BLoC/Provider, AWS, GitHub, CI/CDResponsibilities (scaled by experience level)- Design, develop, and maintain production-grade Flutter applications- Build responsive, high-performance mobile user experiences- Integrate REST APIs and real-time WebSocket communication- Optimize applications for performance, scalability, and reliability- Collaborate with backend engineers, product managers, and designers- Write clean, maintainable, and testable Dart code- Participate in architecture discussions and code reviews- Troubleshoot and resolve production issues- Mentor junior developers and contribute to engineering best practices (Senior & Lead roles)- Lead technical decisions and design scalable Flutter architecture (Lead role)Mandatory Requirements - All RolesFinTech experience is required for every role (Trading, Brokerage, Banking, Payments, or WealthTech):- Flutter Developer: minimum 1-2 years of FinTech experience- Senior Flutter Developer: minimum 2-3 years of FinTech experience- Lead Mobile Engineer: minimum 3+ years of FinTech experienceExperience in the broking or stock trading industry will be given strong preference across all roles.Additional required skills:- Strong proficiency in Flutter and Dart- Experience integrating REST APIs- Experience with Riverpod, BLoC, or Provider- Good understanding of mobile application architecture- Strong debugging and problem-solving skills- Experience building and maintaining production applications- Familiarity with Git and collaborative development workflowsPreferred Skills- Experience building real-time applications using WebSockets- Experience with Flutter performance optimization- Published applications on Google Play Store or Apple App Store- Experience with AWS, GCP, Azure, GraphQL, CI/CD, or Microservices- Experience working in Agile teamsWhat We're Looking For - By RoleFlutter Developer (2 positions)- 2-4 years of mobile application development- Minimum 2 years of Flutter development- Minimum 1-2 years of FinTech experience (mandatory)Senior Flutter Developer (1 position)- 5-7 years of mobile application development- Minimum 3 years of Flutter development- Minimum 2-3 years of FinTech experience (mandatory)- Experience mentoring developers and building production applicationsLead Mobile Engineer, Flutter (1 position)- 8+ years of mobile application development- Minimum 4 years of Flutter development- Minimum 3+ years of FinTech experience (mandatory)- Experience leading technical decisions, designing scalable architecture, and mentoring engineering teams- Works closely with the CTO and backend engineering teamWhy Join First Demat- Build one of India's next-generation trading platforms- Solve real engineering challenges involving performance, scalability, and reliability- Work with modern technologies and real-time systems- Collaborate directly with the founding engineering team- High ownership and technical impact- Competitive salary with ESOP opportunities- Opportunity to grow with a rapidly scaling FinTech companyHow to ApplyPlease include the following in your application:- Which role you're applying for (Flutter Developer / Senior Flutter Developer / Lead Mobile Engineer)- Total mobile development experience- Total Flutter development experience- FinTech experience (mandatory — please specify years and domain)- Links to Play Store/App Store applications (if available)- GitHub or portfolio link (if available)- Current CTC- Expected CTC- Notice periodWe review every application carefully and map candidates to the role that best matches their experience and technical strengths.