11+ RxJS Jobs in Mumbai | RxJS Job openings in Mumbai

• Proficiency in Angular (v8+) and TypeScript.
• Strong knowledge of HTML5, CSS3, and JavaScript/ES6+.
• Hands-on experience with RxJS for reactive programming.
• Experience with state management libraries like NgRx or similar.
• Familiarity with RESTful APIs and JSON data structures.
• Understanding of authentication and authorization mechanisms (OAuth, JWT).
• Experience with Angular CLI for project setup and management.
• Proficiency in browser developer tools for debugging.
• Strong experience with Jasmine, Karma, or other testing frameworks.
• Familiarity with build tools like Webpack or Vite.

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.

LogiNext is looking for a technically savvy and experienced Engineering Leader to take up front-end development efforts. You will design and develop elegant interfaces that exceed client expectations in terms of value and benefit. You will collaborate on scalability issues involving visualizing massive amounts of data and information. You will identify, define and communicate best practices for front end.

You are passionate about building secure, high-performing and scalable front-end applications. Your design intuition inclines towards usability, elegance and simplicity. You are biased towards open-source tools and existing frameworks. You have demonstrated strong inter-personal and communication skills.

Responsibilities

• Lead and direct UI/UX team, define software architecture, collaborate with other teams to explore existing systems, determine areas of complexity and potential risks to successful implementation of advanced visualization products
• Define software architecture, collaborate with other teams to explore existing systems, determine areas of complexity and potential risks to successful implementation of advanced visualization products
• Translate wireframes into functional requirements, write well-abstracted, reusable, high-performance code for UI components
• Work closely with design, product management and development teams to create elegant, usable, responsive and interactive interfaces
• Contribute to continual improvement by suggesting improvements to user interface, software architecture or new technologies
• Optimize web applications to maximize speed and scale. Support diverse clients from high-powered desktop computers to low-end mobile devices
• Understand and coach/teach others, show a high level of ethics and team-work

 Requirements

• Bachelor/Master’s degree in Computer Science, Information Technology or a related field
• 10+ years of experience in developing responsive, elegant, efficient and cross-browser front-end applications
• Hands on experience on various MVC frameworks, UI libraries and tools such as Angular, ReactJS, HTML5, CSS3, D3.js
• Hands on experience on Map API’s like Google Maps, Openstreetmap and other powerful information-rich maps
• Familiar with UX processes and design
• Proven ability to drive large scale projects with deep understanding of Agile SDLC, high collaboration and leadership
• Excellent written and oral communication skills, judgment and decision making skills

• HTML & Java script. Experience with basic GMB etc. PHP exposure. Willingness to work on app and plug –ins etc is welcome.
• Custom Module development
• Front End Development skills (any of below):
• HTML5, PHP
• Shopify
• Magento (1.x & 2.x)
• Big Commerce
• Wordpress
• Server Setup
   

Experience: 4-7 years

Location: Mumbai or Bangalore

Job Responsibilities:

• Developing new user-facing features using React.js
• Building reusable components for future use
• Translating designs and wireframes into high quality code

Required Skills:

• Knowledge and experience in Java Script, ReactJS, Redux, HTML5, CSS3.
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Good experience in UI design and development
• Good experience and thorough understanding of React.js and its core principles
• Familiarity with modern front-end build pipelines and tools
• Familiarity with code versioning (version control) tools, such as Git, SVN, and Mercurial
• Preference will be given to those who have worked on libraries such as Bootstrap, Material js.
• Knowledge ofGraphQL and CSS preprocessor like SASS

About the company:

The E Commerce vertical has developed online consumer platforms for Future Group’s portfolio of retail brands -Easy day, Big Bazaar, Central, Brand factory, aLL, Clarks, Coverstory. Backed by our network of offline stores we have built a new retail platform that merges our Online & Offline retail streams. We use data to power all our decisions across our products and build internal tools to help us scale our impact with a small closely knit team.

Our wide spread store network, robust logistics and technology capabilities have made it possible to launch a ‘2-Hour Delivery Promise’ on every product across fashion, food, FMCG and home products for orders placed online through Big Bazaar mobile app and portal. This makes Big Bazaar the first retailer in the country to offer instant home delivery on almost every consumer product ordered online.

Sportz Interactive (SI) works with its clients and partners to revolutionize the sports fan experience across consumption points by creating best-in-class, kickass products. SI was founded in 2002 as a B2B sports content business. Through the years, it gained immense reputation for its state-of-the-art hosted solutions, digital simulators, match centers and fantasy games. Sportz Interactive has a fantastic reputation in the online sports community, having worked with clients across the globe including the likes of The International Cricket Council, STAR Sports, Yahoo!, AOL, Eurosport, Castrol, Web 18, NDTV, Nimbus, Times of India, Rediff.com and Singtel amongst others. 

Sportz Interactive provides in-depth sports information and content and specializes in product development for the web, mobile and other interactive platforms. 
http://www.sportzinteractive.net/">www.sportzinteractive.net 

2+ years of experience on web technologies.

Primary Responsibilities:

• Coding and debugging pure JavaScript, polyglot and multi-lingual applications
• Working closely with Technical Lead/Project Manager to ensure development timelines are met
• Contribute with ideas to improve system design or streamline product delivery
• Working with challenging applications involving Real Time Data
• Working on different platforms including the usage of the Native SDKs provided on JavaScript

Required Skills:

Mandatory: Passionate about sports, Problem solving, Team player, Target & Result oriented.

Functional: HTML5, CSS3, JavaScript, Vue.js, Typescript, Stimulus JS, AJAX, Browser performance & optimization, Asynchronous requests handling and partial page updates, Browser Developer Tools, GIT and JIRA.

• We are looking for a skilled React.js Developer to join our front-end development team. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack. You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase.
• To ensure success as a React.js Developer, you should have in-depth knowledge of JavaScript and React concepts, excellent front-end coding skills, and a good understanding of progressive web applications. Ultimately, a top-class React.js Developer should be able to design and build modern user interface components to enhance application performance.

• 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.

• Bachelor’s degree in Computer Science, Information Technology, or a similar field.
• Previous experience working as a React.js Developer.
• In-depth knowledge of JavaScript, CSS, HTML and front-end languages.
• Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
• 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.
• Good project management skills.

The ideal candidate is a highly resourceful and innovative developer with extensive experience in the 

layout, design and coding of websites specifically in Angular. You must also possess a strong 

knowledge of web application development using Javascript / Typescript programming language. 

Responsibilities 

• Perform a mix of maintenance, enhancements, and new development as required. 
• Document features, technical specifications & infrastructure. 
• Take ownership of the project you will be working on 

Qualifications 

• 4+ years of experience in web development and software design. 
• Minimum 3 years of experience of developing web applications using Angular 
• Expertise in front-end technologies HTML, JavaScript, CSS, Bootstrap 
• Experience working with Google Tag Manager, Google Analytics, Facebook SDK is a 

plus. 

• Experience working on building PWAs is a plus. 
• Should be comfortable working in an Agile Environment. 
• Should have a good eye for detail. 
• Should be comfortable working on Ubuntu Systems / Windows Systems. 
• BS/MS degree in Computer Science, Engineering or a related subject