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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.
Roles and Responsibilities
React.js Developer:
Job Description:
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 From Figma 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.
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.
Requirements:
- 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.
- Experience with Figma
About Memorres Digital:
We are happy to introduce ourselves as a "People's Company" by which we value our team and customer as a high priority. With a dedicated team working for different industries to add "Digital Happiness" to all your "Digital needs". The exciting part of joining our organization is here for you, Once you complete a career span of 1 year and above in our company based on your performance, you will get an opportunity to work in our onshore office in "Australia".
Job brief:
We are looking for a qualified Front-end developer to join our IT team. You will be responsible for building the ‘client side’ of our web applications. You should be able to translate our company and customer needs into functional and appealing interactive applications.
Mandatory Techonlogies : Javascript, Typescript, React, HTML, CSS,
Libraries/Framework : Next js, Material UI, Styled Components, Redux, REST API and Headless Experience
Responsibilities:
- Use markup languages like HTML to create user-friendly web pages Maintain and improve website
- Optimize applications for maximum speed
- Design mobile-based features
- Collaborate with back-end developers and web designers to improve the usability
- Get feedback from, and build solutions for, users and customers
- Write functional requirement documents and guides
- Create quality mockups and prototypes
- Help back-end developers with coding and troubleshooting
- Ensure high-quality graphic standards and brand consistency
- Stay up-to-date on emerging technologies
Requirements and skills:
- Proven work experience as a Front-end developer
- Hands-on experience with markup languages
- Experience with JavaScript, CSS, and jQuery
- Familiarity with browser testing and debugging
- In-depth understanding of the entire web development process (design, development, and deployment)
- Understanding of layout aesthetics
- Knowledge of SEO principles
- Familiarity with software like Adobe Suite, Photoshop, and content management systems
- An ability to perform well in a fast-paced environment
- Excellent analytical and multitasking skills
Job Description
- • Collaborate with developers and UI/UX engineers to build scalable web apps
- • Design, implement and manage large applications with video streaming and complex state and high-frequency data
- • Experiment with large data sets to find interesting and valuable ways to visualize the data
- • Build reusable, testable React components that can be used between projects
- • Contribute towards building the company’s coding culture.
- • Mentor, groom junior developers and participate in code reviews
Requirements
- • 3+ years of relevant industry experience
- • A deep understanding of JavaScript
- • React, Redux or other JS framework experience
- • HTML5, CSS/SASS, Restful APIs, HTTP
- • JEST or other testing experience
- • Experience with android app development
- • Experience with CI/CD
- • Experience with Mathjax/Latex
- • Experience with large scale video streaming
- • Understanding of i18n, A11Y
- • Excellent understanding of cross-browser compatibility issues
We are looking for an enthusiastic and passionate Web Developer Intern with a proven track record of building Web apps from the ground up using ReactJs.
Skills Required
- 1-3 Years of experience in Web Development
- Strong proficiency in ReactJS and Firebase
- Knowledge of Twilio API is a plus.
- Understanding of front-end development tools such as Webpack, NPM, etc.
- Ability to understand business requirements and translate them into technical requirements.
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Any production project on ReactJs is a plus.
Roles and Responsibilities
- Developing new user-facing features using ReactJS.
- Building reusable components and front-end libraries for future use
- Translating UI/UX design wireframes into high-quality code for producing visual elements of the application.
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Optimizing components and creating docs, unit, scenario, integration sanity test, etc. if required.
About Us:
Spacenos is the fastest-growing start-up which is innovating in the finance, edtech and marketing domain since 2015 and won multiple awards and recognitions from more than 40+ MNCs and Fortune 500 companies. Our Clients are based out of the U.S.A and Australia. We are funded & Supported by Government of Karnataka, Angel Investors and International Grants.
Hiring Process:
- Apply for your CV and past work to be reviewed.
- Receive a telephonic interview or assessment upon filling the final step form.
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Receive offer letter if selected.
Hiring Duration:
Our hiring process takes less than 24 hours from the time you receive the Final Step form.
Validity: Up to Dec 2023
- Apply soon, the earliest applicant would be preferred over the late applicants.
About us:
HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.
We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.
To know more, Visit! - https://www.happyfox.com/
What you can expect as a Senior Frontend Engineer at HappyFox:
- You will consistently ship features and improvements with minimal guidance and support from other team members.
- You’ll work alongside the Product, Design, and, Backend Engineering teams to iterate on new features within HappyFox products.
- You will advocate for improvements to product quality, security, and performance.
- You will solve technical problems of high scope and complexity.
- You will craft code that meets our internal standards for style, maintainability, and best practices for a high-scale web environment.
- You will maintain and advocate for these standards through code review.
- You will recognize inefficiencies in our team, and propose solutions.
You should apply if:
- You have 5+ years of relevant professional experience in building web applications with javascript frameworks like Ember.js or React.js.
- You have a sound knowledge of HTML, CSS, and JavaScript.
- You can clearly and concisely communicate complex technical, architectural, and/or organizational problems and propose thorough, iterative solutions.
- You are comfortable working in a highly agile, intensely iterative software development process.
- You have demonstrated the ability to onboard and integrate with an organization long-term.
- You have a positive and solution-oriented mindset.
- You have experience owning a project from concept to production, including proposal, discussion, and execution.
- You are self-motivated and self-managing, with strong organizational skills.
About CercleX:-
CercleX is a digital technology platform which is a leading https://cerclex.com/blog/waste-management-in-tamil-nadu/">waste management company in Tamilnadu with an extended outlook of circularity through its various ventures into the field of sustainability.
We have received FICCI Impactful Cleantech Startup Award, MeitY Emerging Startup Award, TVS Capital Budding Nxt Gen Entrepreneur Award, and many more for our digital solutions enabling transactions between waste generators, and aggregators, processors, and bringing in complete transparency, traceability to the waste ecosystem.
https://play.google.com/store/apps/details?id=com.scrapmarketCCX">Cercle X ScrapMarket is an app that helps you buy and sell scrap by connecting 100% verified buyers and sellers of scrap across India.CercleX helps brands to accomplish their sustainability targets with https://cerclex.com/extended-producer-responsibility/">Extended Producer responsibility and research solid waste managemet on the environment to ensure the environment is eco free.
Job Description:
Front end developers are required to work in teams alongside back end developers, graphic designers, and user experience designers to ensure all elements of web creation are consistent. This requires excellent communication and interpersonal skills.
Responsibilities:
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Experience in developing apps using Reactjs with Redux, React hooks, react-router with Javascript ES6
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Developing new user-facing features using React.js
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Integrate APIs with frontend components using React.js
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Ensuring user experience determines design choices.
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Developing features to enhance the user experience.
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Striking a balance between functional and aesthetic design.
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Ensuring web design is optimized for smartphones.
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Building reusable code for future use.
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Optimizing web pages for maximum speed and scalability.
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Utilizing a variety of markup languages to write web pages.
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Maintaining brand consistency throughout the design.
Front End Developer Requirements:
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Degree in computer science or related field.
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Understanding of key design principles.
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Proficiency in React.js,HTML, CSS, JavaScript, and jQuery.
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Understanding of server-side CSS.
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Experience with graphic design applications such as Adobe Illustrator.
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Experience with responsive and adaptive design.
- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Thorough understanding of React.js and its core principles
- Experience with popular React.js workflows for state management (such as Redux/Mobx)
- 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
- Experience in Python or Java/Kotlin development












