
Similar jobs
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.
Company Profile:
We are BeyondScale, on a mission to build the mobile learning app to help organizations create internal courses for their workforce easily. eLearning is booming and we aim to tap into the under-served non-IT L&D market and make a difference in the livelihoods of millions of people.We’re now looking for a passionate “/ReactJS Developer” who is willing to join us at an early stage and help us build a world-class product.
Required Skills
- 2+ years of RELEVANT EXPERIENCE in ReactJS
- Strong Computer Science fundamentals - data structures and algorithms
- Strong understanding of ReactJS Ecosystem (State management, Component-based design, Hooks, Responsive design)
- Good with CSS (converting UI designs to code)
- Writing clean and maintainable code
- Proficient understanding of APIs and wiring them
- Strong testing, debugging, and problem-solving skills
- Familiar with modern development practices - writing clean code, git versioning, understanding development workflows
We are seeking an experienced Senior React Web Developer to join our product development team. As a Senior React Web Developer, you will be responsible for developing and maintaining our web applications using ReactJS and Material UI. You will work closely with other developers, designers, product managers, and stakeholders to create high-quality, user-friendly, and scalable software.
Responsibilities:
- Design and develop high-quality, responsive, and user-friendly web applications using ReactJS and Material UI.
- Collaborate with product managers, designers, and stakeholders to ensure the project meets the business requirements and user needs.
- Write clean, maintainable, and efficient code.
- Optimize the application for maximum speed, scalability, and usability.
- Develop reusable UI components and libraries.
- Ensure the technical feasibility of UI/UX designs.
- Identify and troubleshoot bugs and issues.
- Stay up-to-date with the latest trends and technologies in ReactJS, Material UI, and front-end development.
- Participate in code reviews and contribute to the development of best practices.
- Mentor and guide junior developers in the team.
Requirements:
- Bachelor's degree in computer science or related field.
- At least 7 years of experience in front-end development, with at least 4 years of experience in ReactJS and Material UI.
- Strong proficiency in JavaScript, CSS, HTML, and related web technologies.
- Experience with Redux, Redux-Saga, and other state management libraries.
- Experience with building scalable and complex web applications.
- Strong problem-solving skills and attention to detail.
- Experience with Agile development methodologies.
- Strong communication and collaboration skills.
- Experience with Git and version control.
- Ability to work independently and as part of a team.
- Experience with GraphQL and Apollo Client.
- Experience with server-side rendering using Next.js .
- Experience with AWS or other cloud providers.
- Experience with CI/CD pipelines and automation.
- Experience with testing frameworks like Jest, Enzyme, or Detox.
- Experience with UX/UI design and prototyping tools.
Responsibilities:
- Develop high-quality, reusable, and efficient frontend components using React.js.
- Collaborate closely with UI/UX designers and backend developers to translate design concepts into functional interfaces.
- Participate in architectural discussions and contribute to the overall frontend design and development strategy.
- Optimize applications for maximum speed and scalability, ensuring exceptional performance across various devices and browsers.
- Identify and address performance bottlenecks, troubleshooting and debugging frontend-related issues as they arise.
- Stay current with industry trends, best practices, and emerging technologies, and recommend their incorporation into projects when applicable.
- Mentor and provide guidance to junior developers, fostering a culture of continuous learning and skill development.
- Collaborate with the QA team to ensure the delivery of high-quality software through rigorous testing and code reviews.
- Contribute to the documentation of frontend architecture, coding standards, and best practices.
Qualifications:
- Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
- Minimum of 3 years of professional experience as a React Developer.
- Strong proficiency in React.js and its core principles, with a solid understanding of state management (e.g., Redux) and component lifecycle.
- Proficiency in JavaScript, HTML5, and CSS3, Bootstrap, JQuery with an eye for design and user experience.
- Knowledge of version control systems, particularly Git.
- Ability to write clean, maintainable, and well-documented code.
- Strong problem-solving skills and the ability to work effectively in a collaborative team environment.
- Excellent communication and interpersonal skills.
Job Description
We're a fast growing fintech startup based in Pune. In June 2019, we launched, an app to check and monitor credit scores. It is the only app in India that helps consumers improve their credit score via an AI-based score planner.
WE are on a mission to re-imagine credit and payments from first principles and is building a mobile-first credit card in India.
- Roles & Responsibilities:-
Strong proficiency in JavaScript.
Thorough understanding of React.js and its core principles.
Experience with popular React.js workflows (such as Flux or Redux)
Familiarity with newer specifications of Ecma Script.
Familiarity with RESTful APIs.
Knowledge of modern authorization mechanisms, such as JSON Web Token.
Familiarity with modern front-end build pipelines and tools.
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
Ability to understand business requirements and translate them into technical requirements.
A knack for benchmarking and optimization.
- Work closely with our customers to understand their needs and build high-quality user interfaces.
- Build, test and ship dashboards using frameworks like React, ES6, and Webpack.
- Work with engineers and senior leadership to turn our vision into a tangible roadmap every quarter.
- Add positive energy in every meeting or interaction with your coworkers.
Minimum Qualifications
- B.E/B.Tech/M.Tech in CS/CE/IT
- Must-have requirements for candidates include proficiency in the following areas/aspects:
- Git version control system
- Ability to collaborate and communicate complex technical concepts.
- Experience working with charting libraries (i.e. ChartJS, Chartist, Grafana).
- Experience with ReactJS
- Experience building highly scalable, high performance, responsive web applications
- Experience in fundamental front end web technologies including but not limited to HTML, CSS, JavaScript - Minimum work experience 2 years
Languages/Frameworks
Javascript, React, HTML/CSS
Preferred Qualifications
- Experience building, adopting and maintaining RESTful APIs.
- A passion for all things UI and Front End
- Ability to work in a fast-paced and agile development environment
- Strong customer focus and obsession with quality
- Experience working with UI for data-heavy products.
Roles & Responsibilities:
- Meeting with the development team to discuss user interface ideas and applications.
- Reviewing application requirements and interface designs.
- Identifying web-based user interactions.
- Developing and implementing highly - responsive user interface components using React concepts.
- Writing application interface codes using JavaScript following React.js workflows.
- Troubleshooting interface software and debugging application codes.
- Developing and implementing front-end architecture to support user interface concepts.
- Monitoring and improving front-end performance.
- Documenting application changes and developing updates.
React.js Developer Requirements:
- 1-3 Years Previous experience working as a React.js Developer.
- In-depth knowledge of JavaScript, CSS3, HTML5, bootstrap and material design.
- Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
- Experience in Next.js, Ant design, Node.js and Python will add extra advantage but not mandatory
- Experience with user interface design.
- Knowledge of performance testing frameworks including Mocha and Jest.
- Experience with browser-based debugging and performance testing software.
- Excellent troubleshooting skills.
- Overall 4 years development experience with 2+ years of professional experience working with React Native
- An understanding of React Native best practices and a commitment to following them.
- Experience with popular React Native workflows such as Redux and ESLint, Jest, Enzyme.
- Experience with Agile development, scrum.
Your role and responsibilities
- Integrating REST APIs in front-end application using React JS
- Implementing business logic in front-end application using javascript, should be able to handle complex JSON architecture.
- Should be able to manage states using Redux, Redux thunk/saga, Mobx.
- Should be comfortable in using both functional and class components in React.
- Should be able to create reusable components to make efficient applications. We hate code duplication.
- Must be familiar with popular React UI libraries like Material UI, Antd.
- Implement best practices and constantly learn new ways of keeping codebases up to date.
- Having knowledge in Typescript, GraphQL, NextJS, Socket.io is like a match made in heaven.
Criteria
- 2+ years of work experience with Javascript and React JS.
- Proficient understanding of code versioning tools, such as Git.
- Open-minded individual, open to learning new things
- A bit lazy is okay. Lazy people always find the quickest way to reach the solution. They write the most efficient code. We love that.
- You care about the design and user experience of an application. The choice of third-party libraries should be elegant.










