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Required Skills and Experience:
- 5 - 11 years of experience in front-end development, with a strong focus on React.js.
- Proven experience with React.js and related technologies (e.g., Redux, React Router, Hooks, Context API).
- Strong proficiency in JavaScript, HTML5, CSS3, and modern front-end build tools (e.g., Webpack, Babel, etc.).
- Hands-on experience with RESTful APIs, Server Sent Events, WebSocket's
- Hand’s on experience with web components, micro frontends
- Deep understanding of browser apis like history, intersection observer, event handling, virtual panes, drag and drop etc
- Ability to work on a complex and fast moving code base.
- Familiarity with TypeScript and its integration with React applications.
- Strong problem-solving skills and attention to detail.
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.
Responsibilities:
- Design, develop, and maintain highly interactive and responsive web applications using AngularJS 14.
- Write clean, maintainable, and well-documented code that adheres to best practices.
- Leverage Tailwind CSS for rapid UI development and ensure consistent design across the application.
- Implement user interface components and features according to design specifications.
- Integrate with backend APIs and services to retrieve and manipulate data.
- Optimize application performance for a smooth user experience across all devices and browsers.
- Conduct unit testing and participate in integration testing to ensure code quality.
- Collaborate with designers, backend engineers, product managers, and other stakeholders throughout the development lifecycle.
- Stay up-to-date with the latest advancements in frontend technologies and frameworks.
-Contribute to the improvement of existing frontend development processes and documentation.
Qualifications:
- Strong understanding of AngularJS 14 architecture, components, directives, and services.
- Proficiency with HTML5, CSS3, and JavaScript (ES6+).
- In-depth knowledge of Tailwind CSS and its utility classes for rapid UI development.
- Experience with responsive web design (RWD) principles and best practices.
- Understanding of web accessibility guidelines (WCAG).
- Familiarity with unit testing frameworks (e.g., Jasmine, Karma) is a plus.
- Experience with build tools (e.g., Webpack) is a plus.
- Excellent problem-solving and analytical skills.
- Strong attention to detail and a passion for creating pixel-perfect user interfaces.
- Excellent communication and collaboration skills.
A proactive and results-oriented individual with a strong work ethic.
We are looking for an excellent experienced person in Frontend Developer
field. Be a part of a vibrant, rapidly growing tech enterprise with a great
working environment. As Frontend Developer you will be closely working with our engineers to ensure the system consistency and improve your experience.
Responsibilities
• Ensure the technical feasibility of Frontend Development.
• Optimize application for maximum speed and scalability.
• Assure that all user input is validated before submitting to back-end.
• Collaborate with other team members and stakeholders
• Collaborate well with engineers, researchers, and data implementation specialists to design and create
• advanced, elegant and efficient systems.
Essential Requirements
• Proficient understanding of web markup, including HTML5, CSS3,
Angular (4 and above)
• Good understanding of (Depending on the specific case, a developer
should have the knowledge of advanced JavaScript libraries and
frameworks, such as AngularJS, ReactJS, etc.)
• Responsive and Mobile Design
• Cross-Browser Development
• Problem Solving Skill
• Experience with RESTful Services and APIs
• Basic understanding of server-side CSS pre-processing platforms,
such as LESS and SASS
• 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 code versioning tools, such as (Git /
Mercurial / SVN)
EducationalQualifications
B-Tech-IT/M-Tech -/MBA- IT/ BCA /MCA or any degree in the relevant field
What is the role?
We are looking for highly skilled candidates with experience in frontend programming and are comfortable in dealing with backend tools.
Key Responsibilities
- 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 ReactJS 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.
What are we looking for?
An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of it. We are open to promising candidates who are passionate about their work and are team players.
- 6 to 9 years of strong design and development experience in building massively large-scale distributed internet systems and products.
- Previous experience working as a React.js Developer.
- In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
- Strong experience using a client side MVC framework such as NodeJS, ReactJS, or Redux.
- Experience with user interface design.
- Knowledge of performance testing frameworks including Mocha and Jest.
- Experience with browser-based debugging and performance testing software.
- Experience in responsive design, cross browser compatibility, and website performance.
- Knowledge of frontend CSS frameworks like Bootstrap, Material UI, and preprocessors like SASS and LESS.
- Experience with handling Services, RESTful, APIs (NodeJS preferably).
Who will you work with?
You will be working with top-quality engineers who have built one of the best employee engagement SaaS platforms. You will be reporting to the Engineering Head and working closely with the Architect and other leads.
What can you look for?
A wholesome opportunity in a fast-paced environment that will enable you to juggle between concepts, yet maintain the quality of content, interact and share your ideas and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the comprehensive benefits that Xoxoday offers.
We are
A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls and Compass. Works with over 1000 global clients. We help our clients in engaging and motivating their employees, sales teams, channel partners, and consumers for better business results.
- A self-driven UI engineer with an eye for detail UI Design and Development
- Build solutions that’ll be used by thousands of enterprises globally
- Meld UX and great looking UI and Wireframe while keeping excellent code quality
- Thrive in a collaborative team environment and work with challenging timelines
- Design and build web apps that are scalable, puts user experience front and center
- Develop modular UI components for company-wide reuse
- Evolve a common design language for UI across apps
- Establish and advocate front-end coding guidelines
- Iterate UI features with high speed
- Work with ambiguous product requirements and shared backend APIs
REQUIREMENT-
- 2-4 years of experience with working on UI frameworks like Angular
- Experience in product companies would be a plus
- Must have a solid understanding of JavaScript and related libs, CSS
- Big plus if familiar with Django, Flask, Postgres, Linux, Git, AWS
- Writing high-performance, reliable and maintainable code
- Ability to define cross-core contracts and bring them to closure through collaboration.
- Analytical and problem-solving skills
- Working knowledge of Git and proficiency with Jenkin
2-5 years of experience in React.JS, Redux, Rx.js and Material.UI REQUIRED
Experience using React.js with PostgreSQL.
Experience with HTML5, JavaScript and CSS3, as well as Strong knowledge in advanced HTML5 features such as Web Worker, Caching and Browser storages
etc.
Complete understanding of ReactJS and its main fundamentals like JSX, Virtual DOM, component lifecycle, React hooks etc.
Mobile friendly experience a plus.
Version control experience (GIT,TFS,VSTS, etc).
Experience in integrating web application with APIs.
Long Term Contract Job
Senior Frontend Developer
About us
We are founded in 2007. Our mission is to develop a diverse portfolio of technologies, products, and services,that gives all people equal access to unbiased data and information. We believe that through this access people can empower and protect themselves in today’s
ever-changing world, filled with fake news, deception, and a lack of transparency.
About the Job
We are looking for a Sr. Front End Developer to join our growing team. Your
experience here will give you the opportunity to improve the fundamentals and learn about the
top notch technologies in front end development. If you are someone who is passionate about
building stellar user experiences and great products through elegant code this would be the job for you. You will play a key role in translating our customers and company needs into appealing and functional web pages while proving your ideas with testing.
What You Will Get to Do
- Work with your team to improve our conversion rates by coding out variations for A/B testing
- Build better user experiences
- Rigorously educate yourself with the latest development techniques and best practices
- Proactively anticipate issues and develop solutions
- Clearly communicate solutions to team members both verbally and in written documentation
- Implement new digital technologies or development techniques that help to meetbusiness objectives
- Look at existing practices and use your experience to help build better practices when necessary
- Work with our tech leads to decide what long term initiatives we should take on and then motivate others to embrace these initiative
What You Bring to the Table
- 4+ years of front-end development experience
- Experience with responsive web design and the ability to deliver outstanding functionality to the range of client devices from desktops and laptops to mobile platforms
- Familiarity with at least one JavaScript framework (MVW) and know when to do without one when necessary
- Understanding of HTTP and how clients interact with a web server
- Solid understanding of best practices. You read the YDKJS books.
- Capable of coding in ES5 and ES6 and understand the difference between them
- Up-to-date on HTML5 and CSS3 features
- Passionate about supporting all browsers, including IE11+
- Practical experience in design techniques for web UI applications
- Demonstrated ability to roll up sleeves to develop and implement new features and functionality
- Possess an excellent understanding of creative tools in order to develop leading-edge web pages with interesting and innovative client-side capabilities
- Be independently driven and resourceful to deliver results with minimal direction
- Have an entrepreneurial spirit with a drive to contribute new ideas for future development
- Have the ability to deliver what is required but at the same time, look at code objectively to see areas of improvement
- Have the ability to work with UX and technical teams to get things done
- Have the ability to handle multiple, competing priorities in a fast-paced environment
- Have excellent verbal and written communication skills
Pluses
- Experience working in an agile development environment
- Experience with running experiments
- Experience in trying out modern frameworks and executing on migration plan
Super Pluses
- You know how to polyfill features that aren't cross browser friendly.
- You understand same-origin policy and cross-origin resource sharing.
- You understand prototypal inheritance vs classical inheritance.
Why Explore a Career with us?
We build exciting data products and then we market them with passion. We’re a fast-growing company that balances the culture of a startup with the stability of being an established, profitable company. We want to work with people that strive to be in the top .01% of their field. We understand that getting to the top takes hard work, constant improvement, and by making data-driven decisions. It’s a thrilling time to join the team, as we’re expanding our product offerings in exciting new ways, driving innovation through data, marketing, and web & app development.We believe in diversity and hiring people from all backgrounds and walks of life. You must be energetic, inventive, a team player, and looking to help build and grow the
company each and every day. You must have an inner desire to win and the idea of
losing is a non-starter. If you are looking for a position that allows you to work with a
group of smart and dedicated people who will support you but still provide the autonomy
you need to execute your strategy.
The Role
- Create fast and functional and intuitive interfaces.
- Create mobile responsive web pages that work on desktop, tablets and smart phones.
- Create well-written JavaScript, as well as expanding current JavaScript code.
- Create and maintain web forms that integrate with our CRM.
- Assist with API integration for dynamic email/web prospect and customer communications.
- Translate designs and style guides provided by the UI/UX team into functional user interfaces, ensure cross-browser compatibility and performance.
- Create functional pages and banners from design mock-ups.
- Test code across platforms and browsers.
- Document work and communicate issues when they arise.
- Assist troubleshooting production issues.
Requirement:
- Associate degree in a technology-related field required (bachelor’s degree preferred).
- 3+ years of experience in front-end development in a start-up or similar work environment.
- 1+ experience with Front End frameworks such as Angular 2.0/React JS/React Native.
- Knowledge of web standards and accessibility (W3C and s508).
- Ability to create production-quality CSS, SASS, and HTML for web applications with support for mobile and tablet devices.
- Good understanding of web-based application architecture.
- Designing/coding to overcome browser/platform constraints.
- Excellent problem-solving skills and JavaScript Knowledge.
- Ability to learn new tasks outside immediate range of skills.
- Able to collaborate effectively with both technical and non-technical colleagues
- Deadline oriented and able to multi-task in a fast pace environment.
- Knowledge of unit test frameworks like karma, Jasmine, Mocha, Chai etc.
Company Introduction
We started Kool Kanya because we want young women to own and create their futures. We propel and empower you with knowledge, skills, and access to curate jobs that resonate with you. You can count on us to support you through all your career stages and challenges. We are truly here to create the workforce of the future.
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.
What we are asking
· Developing new user-facing features using React.js
· Building reusable components and front-end libraries for future use
· Translating designs and wireframes into high-quality code
· Optimizing components for maximum performance across a vast array of web-capable devices and browser
Skills and qualification
· 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 (such as Flux or Redux)
· Familiarity with newer specifications of ECMAScript
· Experience with data structure libraries (e.g., Immutable.js)
· Knowledge of isomorphic React is a plus
· 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
· Familiarity with code versioning tools e.g. git










