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 looking for a React JS Developer responsible for developing and maintaining rich user interfaces for modern internet-based web applications. Your primary focus will be to implement a complete user interface for a web application, with a focus on performance. Your main duties will include creating modules and components and coupling them together into a functional application following the design patterns and best practices. You will work in a team with the back-end developers and communicate with the API using standard methods. A thorough understanding of all of the components of the platform and infrastructure is required.

Experience Required : 3 + Years

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

• Experience with popular React.js workflows (such as Flux or Redux)

• Experience with data structure libraries (e.g., Immutable.js)

• 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.

• A knack for benchmarking and optimization

• Familiarity with code versioning tools (such as Git )

• Solid expertise in using cloud platforms (AWS, Google Cloud, and others)

• Your Role and Responsibilities

1. Your main job involves creating new features on the visible parts of a website using React.js.
2. You'll be building reusable components that can be used again in the future, saving time and effort.
3. Designs for the website will be given to you, and you'll convert them into actual working and visually appealing website elements.
4. You'll ensure that the website works smoothly on various devices like phones, tablets, and computers.

• Skills and Traits We're Seeking

1. You have a strong understanding of React.js and its workings.
2. You're skilled in a JavaScript
3. Experience with common React.js workflows like Flux or Redux is important.
4. You're familiar with RESTful APIs.
5. Knowledge of modern security measures like JSON Web Token is important.
6. You're comfortable using tools that streamline the process of building website elements, such as Babel, Webpack, and NPM.
7. Translating business requirements into technical plans for the website comes naturally to you.
8. You've used version control tools like Git or SVN to manage and track changes in code.

• Expected Experience

1. You should have accumulated 2 to 4 years of relevant experience in this field.

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/

We’re looking for an experienced Technical Lead – Frontend Engineer to join our growing engineering team to help build and maintain HappyFox’s product offerings. 

What you can expect as a Technical Lead at HappyFox:

• You will consistently ship features and improvements and lead a team of engineers working on our product roadmap.
• You will oversee software architecture, Git workflows, and CI/CD processes and perform code reviews to ensure exceptional code quality.
• You will actively work towards identifying, minimizing, and managing technical debt in the codebase.
• You will improve the development experience and the quality of the codebase. 
• You will define our internal standards for coding style, maintainability, and best practices for a large-scale web application. 
• You will uphold the best practices and coding standards for the team through code review and technical feedback.
• You will take responsibility for key technical architecture and design decisions.
• You will take ownership of the stability and performance of the services that you work on.
• You will contribute to the strategic vision and long-term roadmap in your area of expertise.

You should apply if:

• You have 2+ years of experience in a technical lead role designing and building single-page web applications.
• You have 8+ years of relevant professional experience in building web applications with javascript frameworks like Ember.js or React.js.
• You have deep knowledge of HTML, CSS, and JavaScript
• You have experience building single-page apps and a good understanding of the best practices and coding patterns.
• You have a passion to dig into technically complex problems to troubleshoot and figure out a solution.
• You have a desire to continuously improve and ship the best quality product.
• You have a pragmatic approach to making sure technical decisions align with actual business needs.
• You have a good understanding of the trade-offs when building for product value, reliability, or performance.
• You have excellent communication skills with the ability to discuss and explain your point of view clearly and effectively.

Hi

About the Company:

Our client is a B2B2C tech Web3 startup founded by founders - IITB Graduates who are experienced in retail, ecommerce and fintech.

Role Description : We are looking for a React.Js developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and so we are looking for a strong team player with a commitment to perfection.

Key Responsibilities -

• Developing new user-facing features using prominent front-end frameworks • Involved with and translates designs and style guides provided by the UI/UX team into functional user interfaces using responsive design, ensuring cross-browser compatibility and performance • Building reusable components and front-end libraries for future use • Optimizing components for maximum performance across a vast array of web-capable devices and browsers • Takes ownership and responsibility for the successful delivery of the solutions • Works collaboratively with the engineering and product solution team, demonstrates prototypes for faster feedback to keep improving the user experience • Contributes to continual improvement by suggesting improvements to the user interface, software architecture, or use of new technologies

Required Skills and Qualifications -

• 3-8 years of experience in frontend development primarily using React

• Experience in Hypertext Markup Language revision 5 (HTML5), Cascading Style Sheets (CSS), TypeScript and ReactJS (JavaScript)

• Thorough understanding of NodeJs & React.js(SSR) and its core principles

• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.

• Familiarity with RESTful APIs

• Excellent communication skills

• Ability to understand business requirements and translate them into technical requirements

• A self-starter, who loves to take on hard problems and is enthusiastic to learn new technologies and work in startup environments

Regards

Team Merito

● B.Tech/M.Tech degree in Computer Science, Engineering or a related subject 

● Proven hands-on Software Development experience 

● Strong proficiency in JavaScript and the JavaScript object model is a must. 

● Thorough understanding of React.js and its core principles 

● Prior experience with popular React.js workflows (such as Flux or Redux) 

● Familiarity with RESTful APIs 

● Familiarity with HTML / HTML5 CSS/CSS3/ Bootstrap 

● Mobile app development experience with Flutter/Dart is a big plus; or willingness to learn these technologies. 

● Experience with MySQL is a plus. 

● Preferably prior experience in working in a start-up.

Oddr is looking for an experienced senior frontend engineer to help us build modern web-based Cloud applications. The ideal candidate should be able to bring new ideas to the table and design and implement the frontend architecture with a strong emphasis on its robustness, testability, re-usability, performance, and ease of maintenance. As a senior engineer, the candidate should be able and willing to mentor and guide fellow team members as the team scales and grows. The candidate should demonstrate leadership qualities, be a self-motivated team player, and take pride in what they deliver.

The candidate should be interested in a long-term stable career to grow with our company. The candidate will need to work late night hours because of the geographic distribution of the team.

Technical Requirements:

• Strong proficiency in React.js and its core principles
• Solid understanding of JavaScript/TypeScript, CSS, HTML, and other standard frontend technologies and tools
• Experience with frontend test automation frameworks and tools
• Familiarity with RESTful APIs
• Experience with modern authorization techniques like JWT
• Experience with monitoring and improving frontend performance
• General understanding and knowledge of the UI/UX best practices
• Ability to write clean, well-structured code with proper abstraction and re-usability
• Ability to work to tight deadlines, manage priorities, and take responsibility for delivering to time and quality requirements
• Ability to understand business requirements and translate them into technical requirements
• Excellent communication skills
• Excellent problem-solving skills

Minimum qualifications required:

• Bachelor's degree or relevant certification from a reputable institute.
• 5 years of experience with at least 2 years of building enterprise applications using React.js in recent projects.

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

1. Work with your team to improve our conversion rates by coding out variations for A/B testing
2. Build better user experiences
3. Rigorously educate yourself with the latest development techniques and best practices
4. Proactively anticipate issues and develop solutions
5. Clearly communicate solutions to team members both verbally and in written documentation
6. Implement new digital technologies or development techniques that help to meetbusiness objectives
7. Look at existing practices and use your experience to help build better practices when necessary
8. Work with our tech leads to decide what long term initiatives we should take on and then motivate others to embrace these initiative

1. 4+ years of front-end development experience
2. 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
3.  Familiarity with at least one JavaScript framework (MVW) and know when to do without one when necessary
4. Understanding of HTTP and how clients interact with a web server
5. Solid understanding of best practices. You read the YDKJS books.
6. Capable of coding in ES5 and ES6 and understand the difference between them
7. Up-to-date on HTML5 and CSS3 features
8. Passionate about supporting all browsers, including IE11+
9. Practical experience in design techniques for web UI applications
10. Demonstrated ability to roll up sleeves to develop and implement new features and functionality
11.  Possess an excellent understanding of creative tools in order to develop leading-edge web pages with interesting and innovative client-side capabilities
12.  Be independently driven and resourceful to deliver results with minimal direction
13. Have an entrepreneurial spirit with a drive to contribute new ideas for future development
14. Have the ability to deliver what is required but at the same time, look at code objectively to see areas of improvement
15. Have the ability to work with UX and technical teams to get things done
16. Have the ability to handle multiple, competing priorities in a fast-paced environment
17. Have excellent verbal and written communication skills

1. Experience working in an agile development environment
2. Experience with running experiments
3. Experience in trying out modern frameworks and executing on migration plan

1. You know how to polyfill features that aren't cross browser friendly.
2. You understand same-origin policy and cross-origin resource sharing.
3. You understand prototypal inheritance vs classical inheritance.

Requirements and Qualifications

• Bachelor’s or master degree in engineering
• 4+ years of work experience.
• Proficient understanding of HTML, CSS, and Javascript
• Proficient understanding of ReactJs or similar library
• Good understanding of responsive web development
• Good understanding of SEO and analytics
• Ability to break the business problem into smaller features
• Ability to access the technical feasibility of UI/UX designs
• Build reusable code and libraries for future use
• Optimize application for maximum speed and scalability
• Proficient understanding of cross-browser compatibility