React.js Developer

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.

WHO YOU ARE

To be successful in this role, you’ll need to have the following skills:

• Love for coding: A fanatic about writing beautiful and scalable code.
• Sense of analytics: Strong analytical and troubleshooting skills. Should be resourceful, innovative and inventive.
• Dynamic: Should be comfortable in dealing with lots of moving pieces. Have exquisite attention to detail, and are comfortable learning new technologies and systems. 
• Team player: Knack for influencing without being authoritative. Pitch in wherever the team needs help, from writing blog posts to supporting customers.
• Accountability: High sense of ownership for your code and relentlessness to deliver projects with high business impact. 

KEY QUALIFICATIONS

• BE/BTech in Computer Science or related field. 
• Minimum 3+ years of UI/Frontend development and a strong understanding of building complex layouts using JavaScript, CSS and HTML.

KEY SKILLS

• Strong computer system analysis and design skills in current methodologies and patterns including vanilla JavaScript, some experience with ReactJS, Redux, React Native, Webpack, and Typescript or similar library/tools.
• Obsessed with WPO (Web Performance Optimization) and web/mobile performance analysis.
• Experienced with web standards and protocols such as HTTP, DNS, TCP/IP, and socket APIs in general.

We are looking for a Frontend developer who is proficient with React.js with Html and CSS. The primary focus will be on developing user interface components and implementing them, following well-known React.js workflows such as Redux. The developer would ensure that these components and the overall application are robust and easy to maintain.

Job Description

● Independently think of solutions to complex requirements; possess exceptional logical skills.

● Work on products that are used across platforms (e.g. Android and iOS Mobile Devices,

Tablets, Desktop/Mac)

● Analyse current products in development, including performance, scalability, diagnosis and troubleshooting

● Work with the existing framework and evolve it by building reusable code & libraries

● Search and introduce new software related technologies, processes and tools.

● Collaborate with other team members

● Working on the robustness of the application

Key Skills Required:

● Strong hands-on experience in JavaScript, HTML5, CSS3, CSS3 Animations.

● Good understanding of advanced JS libraries and frameworks such as React.js and Angular.

● Understanding of client-side unidirectional data flow principles and Redux knowledge.

● A good understanding of - React Native - is a big plus.

● UI Performance: should have hands-on experience of optimizing page load, rendering,caching.

● NodeJS, Webpack knowledge is a plus.

● Proficient understanding of cross browser compatibility issues and ways to work around such issues.

● Fluent in responsive design and mobile / tablet UI / UX.

● Web mobile (touch devices: mobiles and tablets) experience is expected.

● Familiarity with JavaScript standards(ES5,ES6) and OOPS concepts.

• Candidate should have strong knowledge of Javascript and HTML5 Canvas
• Should have knowledge of HTML5 Canvas Drawing Pad
• Experience in HTML5 Canvas is a must
• Thorough semantics-level understanding of HTML5 Canvas
• Good understanding of JavaScript programming and DOM manipulation
• Understanding and deployment of Responsive Web Design
• Understanding of how web design/dev is related to web Performance

• Candidate should be available to join immediately

Responsibilities :

Build awesome web experiences using React.js
Plan and accommodate all mediums, screen sizes and device types
Build in flexibility and customization from the start
Internalize the user and promote good usability and accessibility in every experience
Be nimble and react quickly to changing business conditions
Work with product managers, content producers, QA engineers and release engineers to own your solution from development to production

Qualifications :

5+ years building web and/or mobile experiences with evidence of exceptional ability
Bachelor’s Degree in Computer Science or related field, or equivalent experience or other evidence of exceptional ability
Solid understanding of fundamental web technologies such as HTTP, REST, AJAX and JSON.
Strong proficiency in JavaScript / ES6, including DOM manipulation and the JavaScript object model
Thorough understanding of React.js and its core principles
Unit Testing with Jest/Enzyme
Experience with Redux
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
Experience working with RESTful APIs
Experience with Nodejs, Expressjs or NextJs
Excellent mastery of web standards, cross-browser compatibility, accessibility and SEO.
Strong CSS skills w/ experience building responsive applications across a variety of browsers and devices using modern CSS3 techniques
Ability to identify tasks which require automation and automate them
Expert knowledge of maintaining and debugging live software systems
Prior experience with Symfony MVC frameworks desirable.

We are hiring React JS Developer for Dehradun location

• In depth knowledge of React JS.
• Experience creating front end applications using HTML5, CSS, bootstrap.
• Hands on experience with JavaScript Development on both client and server-side.
• Ability to work both independently and in collaborative teams to communicate design and build ideas effectively.
• Able to handle multiple projects and competing deadlines.
• Good understanding of overall web design including basic usability, accessibility, industry standards, architecture, and navigation.
• Excellent communication and Client interaction.

As a Mid Level Front-End Developer, you will:

Create well-designed, documented, and tested front end solutions using modern JavaScript frameworks, such as React and Redux, CSS-in-JS, Styled Components, etc.

Collaborate with clients, project managers, UX designers, and other developers to gain a thorough understanding of project requirements within agreed-upon scope and architecture designs

Translate wireframes into fully functional user interfaces and proactively address edge case scenarios

Collaborate with back-end developers to design REST APIs and request/response schemas

Perform code reviews with constructive feedback

Promote clean code, best practices, and consistent design patterns across the team

Write infrastructure as code and automated deployment scripts for customer delivery

Provide development estimates from granular tasks to comprehensive projects/applications

Lead and present technical discussions to clients, including knowledge transfers

Take on additional responsibilities over time and become a key contributor for scaling team size

• Work with other developers to ensure that the website is functional and visually appealing.
• Liaise with the client to gauge their needs and expectations.
• Plan the layout of the website.
• Ensure that the website is optimized for various devices.
• Use analytics to test client enjoyment.
• Building reusable code and libraries for future use.
• Implementation of security and data protection.

Requirements:

• Experience should be at least 3 Years
• Should be good in UI
• Should be proficient in Typescript, React Native and React Js
• Proficiency in HTML, JavaScript, jQuery, and CSS.
• Good interpersonal skills.
• Understanding of key design principles.
• Good problem-solving skills.
• Would prefer to have someone from the gaming industry/poker industry or someone who is interested in the poker game development