Sr 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.

We are seeking an experienced UI Developer with a strong background in Next.js to join our dynamic development team. The ideal candidate will have a deep understanding of front-end technologies, particularly React and Next.js, and will be responsible for creating high-performance, user-centric web applications. If you're passionate about building intuitive, scalable, and responsive UI components, we'd love to meet you!

Key Responsibilities:

Design and develop responsive and visually appealing user interfaces using Next.js, React, HTML5, CSS3, and JavaScript.

Collaborate closely with designers, product managers, and back-end developers to implement and refine user experiences.

Build reusable components and front-end libraries for future use.

Optimize web applications for maximum speed and scalability.

Write clean, maintainable, and efficient code while adhering to best practices.

Stay up to date with the latest trends, tools, and techniques in web development.

Troubleshoot and debug application issues.

Ensure cross-browser and cross-device compatibility.

Participate in code reviews and mentor junior developers.

Skills & Qualifications:

Experience: 5–8 years of hands-on experience in front-end development with a focus on Next.js.

Proficiency in Front-End Technologies:

Strong knowledge of Next.js, React.js, and other JavaScript libraries and frameworks.

Expertise in HTML5, CSS3, and JavaScript (ES6+).

Familiarity with TypeScript is a plus.

Experience in building responsive, cross-browser compatible websites.

Familiarity with RESTful APIs and integration with back-end systems.

Knowledge of modern web development practices like Webpack, Babel, CSS preprocessors (Sass/SCSS), etc.

Understanding of web performance optimization techniques.

Experience with version control systems such as Git.

Familiarity with agile development methodologies.

We are seeking a skilled React Native developer with a minimum of 3 years of hands-on experience in the field. The ideal candidate will possess expertise in React, React Native, JavaScript, Nest.js, and Node.js. As a key member of our development team, the candidate will be responsible for designing and implementing robust and efficient React Native applications.

Responsibilities include collaborating with cross-functional teams to define, design, and ship new features, as well as maintaining and improving the performance of existing applications. The candidate should be well-versed in the latest trends and technologies in the mobile development space and demonstrate a strong understanding of user interface and user experience principles.

Key skills for success in this role include proficiency in React and React Native frameworks, advanced knowledge of JavaScript, and experience with Nest.js and Node.js. The candidate should be capable of troubleshooting, debugging, and optimizing code for performance. Effective communication and teamwork are essential, as the role involves close collaboration with other developers, designers, and stakeholders.

If you are passionate about creating cutting-edge mobile applications, possess the required skills, and thrive in a dynamic work environment, we invite you to apply for this exciting opportunity.

Requirements

• We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). 

• You will ensure that these components and the overall application are robust and easy to maintain. - You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Skills And Qualifications

• Good understanding of advanced JavaScript libraries and frameworks  ReactJS or Vue JS
• Developing new user-facing features using React.js 
• Experience with popular React.js workflows (such as Flux or Redux)
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model 
• Thorough understanding of React.js and its core principles 
• Knowledge of isomorphic React is a plus - Familiarity with RESTful APIs 
• Knowledge of modern authorisation 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
• Building reusable components and front-end libraries for future use
• Proficient understanding of web markup, including HTML5, CSS3
• Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery
• Good understanding of asynchronous request handling, partial page updates, and AJAX

• Proficient understanding of cross-browser compatibility issues and ways to work around them.
• Proficient understanding of code versioning tools, such as Git / Mercurial / SVN
• Research new technology trends, come up with suggestions and roll out the same
• Expertise in building UI for cross-platform web application.
• Ability to write high-performance, reusable code for UI components.
• Must be a self-starter with a passion to stay current with the newest online technologies.
• Passion for performance debugging and benchmarking
• Excellent communication and problem solving skills. 

• Building Progressive Web App components and features for the companys advanced health-tech platform using React Js, Node Js
• Communicating effectively in a cross-functional product development team and presenting ideas and solutions effectively.

•  DOT NETCore,.NET, C#,NET Core, http://asp.net/" target="_blank">ASP.NET Core Rest API, Odata,
• Blazor, HTML, CSS, Bootstrap, JavaScript,
• Development of Docker container-based microservices,
• Azure SaaS Services (Azure Service Bus, Azure Kubernetes Services, CosmosDB, Cognitive Services, Redis),
• Azure DevOps (ALM Platform),
• CI/CD delivery via Azure Pipelines,
• MS-SQL (T-SQL) and No-SQL databases (MongoDB),
• Object-Oriented Programming Principles, SOLID, Design patterns
• Good communication skill

Required Candidate profile

• Responsible for development of new highly responsive, web-based user interface
• Construct visualizations that can depict vast amounts of data
• Work and collaborate with the rest of the engineering team
• Work with product team and graphic designers
• Learn and understand user interactions
• Develop a flexible and well-structured front-end architecture, along with the APIs to support it

Requirements and qualifications

• B.S Degree in Computer Science
• Experience with JavaScript
• Experience with REACT
• Experience with HTML / CSS
• Experience with REST API's
• Git knowledge is a plus
• Team player
• Good time-management skills
• Great interpersonal and communication skills

Job responsibilities

·        Understand the current technical architecture including constraints related to platforms, standards and skillsets.
·        Review and integrate all application requirements, including functional, integration, security, performance, quality, and operations.
·        Review designs, documents and have hands-on coding exp.
·        Follow up the activities and team commitments to deliver the right solution at the right time.
·        Review and integrate the technical architecture requirements for the development and make all final decisions regarding system software.
·        Follow and adopt approaches, methodologies, and SDLC standards.
·        Apply techniques and skills required to identify a root cause of a given software integration issue.
·        Escalate encountered technical software issues to project leadership in a timely fashion and respond back consistently on time.
·        Acts as the technical subject matter expert for a product domain and the technical leader within a team
·        Leads and sets the direction for design and implementation of software features/functionality, correction of defects and/or creation of new products
·        Applies advanced systems analysis techniques to evaluate newly created code
·        Provides thought leadership and innovation within a technical domain

.       documents and communicates on complex technical topics outside the immediate development team

Qualifications:

·        Bachelor/Master’s degree in CS or Computer Engineering required
·        5+ years of programming experience in web applications development
·        Hands on Angular development experience 
·        Working knowledge of HTML and CSS
·        Working knowledge in Designing, Developing, and Deploying RESTful web services and other Web APIs.
·        Deep knowledge of Web Application Architecture and Object oriented design. Should have practical knowledge of design on more than two web applications.
·        Should be able to technically lead a small group of members