We're Hiring: Senior Frontend Engineer (React / Next.js) (5+ Years)
Company: First Demat
Location: Ranchi / Mumbai / Hybrid
Open Positions: 3-4
Joining: Immediate
Compensation: Competitive Salary + ESOPs
About First DematFirst Demat is building a next-generation stock trading and investment platform for serious traders and long-term investors.
Our focus is on real-time market data, low-latency execution, portfolio analytics, and AI-driven insights.
Role OverviewWe are hiring Senior Frontend Engineers to join our core team and build a high-performance, real-time trading web platform.
This is not a typical UI role you'll be working on a real-time system with live market data, fast updates, and complex workflows.
- What You'll Work OnWebSocket-based real-time systems (live ticks, P&L updates)
- Trading dashboards (watchlist, order book, positions)
- Option chain with high-frequency updates
- TradingView chart integration
- Multi-panel trading UI with fast interactions
- Performance optimization for large-scale, data-heavy screens
- Key ResponsibilitiesDesign, develop, and maintain scalable frontend systems using React / Next.js
- Build real-time features using WebSockets and streaming data
- Integrate REST APIs and handle high-frequency updates
- Optimize UI for performance, responsiveness, and low latency
- Work closely with backend, product, and design teams
- Review code, follow best practices, and guide junior developers
- Required Skills & Experience38 years of frontend development experience
- Strong hands-on experience with React / Next.js / TypeScript
- Experience working with WebSockets and real-time data
- Good understanding of state management and performance optimization
- Experience building large, data-heavy applications
- Strong debugging and problem-solving skills
- Preferred / Nice to HaveExperience in fintech / trading / brokerage platforms
- Worked on real-time dashboards or high-frequency UI systems
- Experience with charting libraries or data visualization
- Familiarity with AWS / microservices / CI-CD
- Why Join First DematBuild a real-time trading platform from scratch
- Competitive salary with ESOPs
- Work directly with the core engineering team
- High ownership and impact
- Solve challenging, performance-critical problems
Important NotePlease apply only if you have experience working on real-time or WebSocket-based applications.
How to ApplyWhile applying, please share:
- Your total React / frontend experience
- One real-time or high-performance project you've worked on
- GitHub / portfolio / live project links (if available)
