
Job title: React.js Developer
Location: Gurugram (Onsite)
Notice: Immediate joiner
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.
- Basic knowledge of Data Structure and Algorithm required

About Sunday Labs
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About the Role
We are looking for highly motivated React Fresher Developers who are passionate about building modern, scalable web applications. If you have completed a full-stack or React development course and are eager to apply your skills in real-world projects, we would love to hear from you.
This role is ideal for individuals who are proactive, eager to learn, and ready to contribute to dynamic, collaborative teams.
Mandatory Requirements
Completed a 6-month structured certification program in one of the following:
- Full-Stack Development (MERN / MEAN / Django + React)
- React.js Development
Solid understanding of:
- React fundamentals (Hooks, Props, State, Components)
- Modern JavaScript (ES6+)
- REST APIs and asynchronous data handling
- Git / GitHub (basic usage acceptable)
- At least one completed academic or internship project demonstrating your coding skills.
Preferred / Bonus Advantage
Experience with chatbots or AI-powered conversational interfaces is a plus. This could include:
- Platforms / frameworks like Dialogflow, RASA, IBM Watson, Botpress, or OpenAI API
- Custom chatbot development using Node.js or Python
- A project demonstrating chatbot integration or implementation
Note: A chatbot-related project or feature will be considered a strong plus.
Responsibilities
- Develop responsive and interactive UI components using React.js and modern front-end technologies
- Collaborate with backend teams to integrate APIs and contribute to product features
- Participate in code reviews, testing, and deployment processes
- Continuously explore, learn, and implement new technologies and best practices
NOTE: Laptop with high speed internet is mandatory and the candidate must be based in Chennai.
Core responsibilities
• Collaborate with product teams to more accurately define new features
• Collaborate with UX in the building of a design system/component library
• Ensure high performance of all systems developed
• Aware of the relationship between development and business with a strong sense of ownership
• Employ the latest techniques such as agile software development
• Good knowledge of highly scalable server-side development
• Basic working knowledge of Unix/Linux
• Excellent problem solving and coding skills in Javascript/Angular
• Strong interpersonal, communication and analytical skills
• Should have the ability to express their design ideas and thoughts
Job Brief
• JavaScript and angular expertise
• Experience with libraries such as bootstrap, Ag-grid, formly, observables, and ngrx
• You enjoy working with new technologies, and are curious and energetic
• Experience working with REST APIs
• Good understanding about authentication and security
• Create and maintain various unit and integration tests
• You enjoy working in a creative and agile environment that moves fast
• Ability and interest in providing mentorship to junior members of the team
• Write high quality code and Conduct code reviews
• Being resourceful and detail-oriented, along with being an outside the box thinker!
• Experience being a great team player, who work collaborative, and brings a positive attitude
Job Summary:
Core Technical Skills
Strong JavaScript OR TypeScript experience (minimum 2 years)
Angular OR good balance of JS/TS + Angular skills
Understanding of HTTP requests & web technologies
Hands-on project experience in JavaScript ecosystem
Good to have (not mandatory):
Node.js
XPath
Puppeteer
Automation scripting exposure
Coding & Development Skills
Building and maintaining UI components
Writing clean, maintainable code
- Debugging & troubleshooting in production/test environments
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Thirega@ vysystems dot com - WhatsApp - 91Five0033Five2Three
We are seeking a highly motivated Software Development Engineer with expertise in building scalable, extensible and user-friendly web applications. You will work with a fast paced Product Engineering team to build efficient and reusable web applications for mobile and fixed devices.
What you’ll do:
- Architect, Design, Code reviews and build scalable applications.
- You will be engaged in identifying and addressing performance bottlenecks, and collaborate with other team members to innovate current/new products.
- Identify, communicate and implement best practices for application engineering.
- Ensure high scalability and performance
- You will advocate for good, clean, well-documented and performing code; define and follow standards and best practices for front-end development.
We’d love for you to have:
- Experience: 1-3 yrs recent experience of working in a scalable web product firm
- Education: B.Tech/M.Tech in Computer Science from Top ranked colleges in India
- Excellent software development skills in developing web applications over client-side frameworks - Backbone, React (preferred) and/or angular frameworks (preferred); and server-side frameworks like node.js
- Excellent programming skills in object-oriented, modularised JavaScript, Typescript (preferred)
- Strong knowledge and working experience in server-side Event-driven programming using Node.js
- Excellent programming skills in Javascript, jQuery, AJAX, YUI.
- Passion for writing optimized code using JS best practices and design patterns
- Experience with JS or Java-based Unit/Integration Testing using Selenium, Appium, Selendroid
- Hands-on experience in building scalable web applications
- Excellent problem solving and debugging skills
- Good Knowledge of version control - GIT (preferred)
- Experience with the full software development lifecycle, design, develop, debug, document, and deliver (especially in a multiple site organization)
- Strong verbal and written communication skills
- Ability to deliver great results in an agile development
- Good to have: Working knowledge of web standards (i.e., REST) and OOPS
- Good to have: Experience in Data Structures, Algorithms and their optimization
Even if you don’t meet all of these qualifications above, we’d still love to hear from you. Tell us about your unique qualifications in your cover letter.
CaaStle is committed to equality of opportunity in employment. It has been and will continue to be the policy of CaaStle to provide full and equal employment opportunities to all employees and candidates for employment without regard to race, color, religion, national or ethnic origin, veteran status, age, sexual orientation, gender identity, or physical or mental disability. This policy applies to all terms, conditions and privileges of employment, such as those pertaining to training, transfer, promotion, compensation and recreational programs.
Requirements
- 2.5+ years of experience in React JS and Redux
- Expert in React.j, ideally using TypeScript language extensions
- Good understanding of JavaScript Design Patterns
- Good experience writing front-end test cases
- HTML5, CSS3 and Responsive web design are mandatory
- Exposure to Scrum methodology and XP technical practices such as unit testing, pair programming, test-driven development, continuous integration or continuous delivery
- Self-motivated, fast learner, detail-oriented, team player and a sense of humour
- Should have experience with Payment(US) Integrations
- Should have experience with Ecommerce/ERP Connectors
Excellent knowledge of React JS and its core principles.
Hands-on experience with Redux.
Knowledge of design patterns.
Hands-on experience with MVC architecture.
Excellent knowledge of Flexbox layout model.
Proficient with standards and features of ECMAScript 6.
Working knowledge with versioning control tools - Git, SVN.
Working knowledge with JS-based build tools like Grunt, Gulp, and Bower.
Responsibilities
Understand requirements and translate that to product features.
Should be able to lead a team of developers and designers and communicate status to customers.
Should be efficient in developing and implementing best practices and write a smart piece of code.
Coding standards should be followed, and the code should be highly performant.
Should be able to do impact analysis and document the design of the components.
Should be able to develop reusable components using proper design patterns as listed by lead/architect so that it is extensible.
Should be able to integrate frontend with backend REST apis.
Essential Skills
Strong experience in Typescript
At least 1 - 2 years of experience using HTML, CSS, JavaScript & Angular Js, or React Js
Basic experience in at least one server-side technology (Java, PHP, NodeJS, Python, Ruby)
Ability to multi-task, organize, and prioritize.
We have an urgent opening for the React JS Developer.
Must have hands on experience for at least 2 years.
We are US based IT Company.
Working 5 Days a Week.
Best package in the industry.
Responsibilities:
1. Developing new user-facing features using React.js
2. Developing and implementing highly responsive user interface components using react concepts.
3. Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
4. Troubleshooting interface software and debugging application code.
5. Monitoring and improving front-end performance.
6. Translating designs and wireframes into high-quality code.
7. Proficiency with agile development methodologies
8. Work and collaborate with the rest of the engineering team
Skills and requirements:
1. Thorough understanding of React.js or Vue.js and its core principles
2. Experience with popular React.js workflows (such as Flux or Redux)
3. In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.









