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We are seeking a highly skilled React JS Developer with exceptional DOM manipulation expertise and real-time data handling experience to join our team. You'll be building and optimizing high-performance user interfaces for stock market trading applications where milliseconds matter and data flows continuously.
The ideal candidate thrives in fast-paced environments, understands the intricacies of browser performance, and has hands-on experience with WebSockets and real-time data streaming architectures.
Key Responsibilities
Core Development
- Advanced DOM Operations: Implement complex, performance-optimized DOM manipulations for real-time trading interfaces
- Real-time Data Management: Build robust WebSocket connections and handle high-frequency data streams with minimal latency
- Performance Engineering: Create lightning-fast, scalable front-end applications that process thousands of market updates per second
- Custom Component Architecture: Design and build reusable, high-performance React components optimized for trading workflows
Collaboration & Integration
- Work closely with traders, quants, and backend developers to translate complex trading requirements into intuitive interfaces
- Collaborate with UX/UI designers and product managers to create responsive, trader-focused experiences
- Integrate with real-time market data APIs and trading execution systems
Technical Excellence
- Implement sophisticated data visualizations and interactive charts using libraries like Chartjs, TradingView, or custom D3.js solutions
- Ensure cross-browser compatibility and responsiveness across multiple devices and screen sizes
- Debug and resolve complex performance issues, particularly in real-time data processing and rendering
- Maintain high-quality code through reviews, testing, and comprehensive documentation
Required Skills & Experience
React & JavaScript Mastery
- 5+ years of professional React.js development with deep understanding of React internals, hooks, and advanced patterns
- Expert-level JavaScript (ES6+) with strong proficiency in asynchronous programming, closures, and memory management
- Advanced HTML5 & CSS3 skills with focus on performance and cross-browser compatibility
Real-time & Performance Expertise
- Proven experience with WebSockets and real-time data streaming protocols
- Strong DOM manipulation skills - direct DOM access, virtual scrolling, efficient updates, and performance optimization
- RESTful API integration with experience in handling high-frequency data feeds
- Browser performance optimization - understanding of rendering pipeline, memory management, and profiling tools
Development Tools & Practices
- Proficiency with modern build tools: Webpack, Babel, Vite, or similar
- Experience with Git version control and collaborative development workflows
- Agile/Scrum development environment experience
- Understanding of testing frameworks (Jest, React Testing Library)
Financial Data Visualization
- Experience with financial charting libraries: Chartjs, TradingView, D3.js, or custom visualization solutions
- Understanding of market data structures, order books, and trading terminology
- Knowledge of data streaming optimization techniques for financial applications
Nice-to-Have Skills
Domain Expertise
- Prior experience in stock market, trading, or financial services - understanding of trading workflows, order management, risk systems
- Algorithmic trading knowledge or exposure to quantitative trading systems
- Financial market understanding - equities, derivatives, commodities
Technical Plus Points
- Backend development experience with GoLang, Python, or Node.js
- Database knowledge: SQL, NoSQL, time-series databases (InfluxDB, TimescaleDB)
- Cloud platform experience: AWS, Azure, GCP for deploying scalable applications
- Message queue systems: Redis, RabbitMQ, Kafka, NATS for real-time data processing
- Microservices architecture understanding and API design principles
Advanced Skills
- Service Worker implementation for offline-first applications
- Progressive Web App (PWA) development
- Mobile-first responsive design expertise
Qualifications
- Bachelor's degree in Computer Science, Engineering, or related field (or equivalent professional experience)
- 5+ years of professional React.js development with demonstrable experience in performance-critical applications
- Portfolio or examples of complex real-time applications you've built
- Financial services experience strongly preferred
Why You'll Love Working Here
We're a team that hustles—plain and simple. But we also believe life outside work matters. No cubicles, no suits—just great people doing great work in a space built for comfort and creativity.
What We Offer
💰 Competitive salary – Get paid what you're worth
🌴 Generous paid time off – Recharge and come back sharper
🌍 Work with the best – Collaborate with top-tier global talent
✈️ Adventure together – Annual offsites (mostly outside India) and regular team outings
🎯 Performance rewards – Multiple bonuses for those who go above and beyond
🏥 Health covered – Comprehensive insurance so you're always protected
⚡ Fun, not just work – On-site sports, games, and a lively workspace
🧠 Learn and lead – Regular knowledge-sharing sessions led by your peers
📚 Annual Education Stipend – Take any external course, bootcamp, or certification that makes you better at your craft
🏋️ Stay fit – Gym memberships with equal employer contribution to keep you at your best
🚚 Relocation support – Smooth move? We've got your back
🏆 Friendly competition – Work challenges and extracurricular contests to keep things exciting
We work hard, play hard, and grow together. Join us.


we are laser-focused on building AI-powered tools and services that significantly boost the productivity of researchers and professionals. Every researcher or professional goes through the stages of knowledge discovery, knowledge acquisition, knowledge creation, and knowledge dissemination. However, each stage is cognitively heavy and is tightly coupled. In this direction, we have our flagship products Trinka and RAx that focus on making all these four stages easy and fast.
About Trinka
Trinka (www.trinka.ai) is an AI-powered English grammar checker and language enhancement writing assistant designed for academic and technical writing. Built by linguists, scientists, and language lovers, Trinka finds and corrects thousands of complex writing errors — so you don’t have to. Trinka corrects contextual spelling mistakes, and advanced grammar errors, enhances vocabulary usage, and provides writing suggestions in real-time. Trinka goes beyond grammar to help professionals and academics ensure professional, concise, and engaging writing. With subject-specific correction, Trinka understands the nuances in the expression of each subject and ensures the writing is fit for the subject. Trinka's Enterprise solutions come with unlimited access and great customization options to all of Trinka’s powerful capabilities.
About Enago RAx
RAx (www.raxter.io) is the first smart workspace that helps researchers (students, professors, and corporate researchers) to be better and faster in their research projects. Powered with proprietary AI algorithms and a unique approach to solving problems with design and tech, RAx is set to be the default workspace for any research-heavy projects. Launched in 2019, the product connects information (Research papers, Blogs, Wiki, Books, Courses, Videos, etc.) to behaviors (reading, writing, annotating, discussing & more), opening up newer insights and opportunities in the academic space that was otherwise not possible (or not imaginable).
About the team
We are a bunch of passionate researchers, engineers, and designers who came together to build a product that can revolutionize the way any research-intensive projects are done. Reducing cognitive load and helping people to convert information into knowledge, is at the core of our mission. Our engineering team is building a scalable platform that deals with tons of data, AI processing over the data, and interactions of users from across the globe. We believe research plays a key role in making the world a better place, and we want to make it easy to approach and fun to do!
- Role overview
As an SDE-3 Fullstack, you will actively lead, setting top-class engineering examples, a team of young talented web developers, and take major responsibility for end-to-end project development and delivery along with the Engineering Manager (EM), Principal Engineer (PE), other SDE-3 leads, and Technical Project Manager (TPM). You will also assist them with hiring and training the team. In essence, your usual day will be primarily coding 100% of the time.
The person that we are looking for
We are seeking an SDE-3 Frontend at Trinka ( https://trinka.ai ) with 5+ years of enterprise frontend web development experience primarily working on the AngularJS/ReactJS.
What we would love to see in you:
- Excellent Javascript programming skills - comfortable with writing, dubugging, refactoring and reviewing pure JS and AngularJS code
- Good problem solving skills to frame technical solutions for complex business problems.
- Experience with unit and integration testing. You believe in and encourage extensive test coverage and seek to automate testing whenever possible.
- Responsible for designing and conducting a high-quality code-review process and maintaining highly performant, testable code with following strong software design patterns.
- Breaking down complex problems into small tasks and PRs to deliver value safely and incrementally.
- You will be actively reviewing approaches created by the tech team and helping them to find the optimal solutions to the problems.
Experience
You have proven 5+ years of frontend experience (AngularJS/Reactjs preferred)
2+ years of experience with Websockets
Any experience with browser plugin development (good to have)

Location : Andheri east, Mumbai
Notice Period : Immediate to 15 days
Responsibilities :
- Create algorithms from scratch.
- Create products and backend API's as described by the business team.
- Back-test and create a hypothesis as desired by the research team.
- Code the backend of logics for consumption by the UI team.
- Deploy websockets, Django, rest API's & dynamic TCP, UDP based data flow.
- Deployment and maintenance of codes with version control.