
We do have opening with our company Crownstack Technologies for React.Js Developer. Interested candidate can share their CV.
About us
Crownstack is a premium organisation that specializes in providing innovative digital technology solutions to various enterprises including startups, small and medium-sized businesses and Fortune 500 companies across the globe. Our services include, but are not limited to, UI design, mobile app and web development, Cloud computing, data analytics, and Dev Ops. We take pride in our ingenious, meticulous, and skilled workforce who aim to deliver sustainable and cutting-edge business and technology solutions to all our clients. ★ 100+ Successful Apps Delivered | ★ Enterprise and Startup Clients | ★ Scalable Products | ★ MEAN Stack | ★ Python, pHp, NodeJs | ★ Agile Development | ★ Best UI/UX Award
Job Description
Crownstack is looking for ReactJs Developers to join our team and deliver a streamlined user experience. We want a team member who strives to develop a first-class codebase using ReactJs best practices. As a React Developer, you will implement a complete user interface across our mobile and desktop web interfaces.
Requirements
Job Location: Gurgaon/Noida
Experience: 2+ years
Roles and Responsibilities
- Develop user interfaces with the latest frontend technologies
- Research, analyze, and develop product features of increasingly complex nature
- Code tested and documented JavaScript, HTML, PUG and CSS
- Make design and technical decisions for ReactJs projects.
- Develop application code and unit testing in the ReactJs with REST APIs
- Ensure high performance of all systems developed
Skills and Qualifications
- 2+ years experience with ReactJs
- Strong expertise with HTML, CSS, and writing cross-browser compatible code.
- Experienced in Typescript is a plus
- Familiarity with testing frameworks (Ex. Enzyme)
- Experience in building highly reusable and decoupled components
- Experience in State management Libraries like Redux, mobx
- Critical thinking and problem-solving skills
- Good time-management skills
- Great interpersonal and communication skills

About Crownstack Technologies
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Job Title: Front-End Developer
Department: IT
Location: Mohali
Shift: Rotational Shifts
Employment Type: Full-time
Job Overview:
We are seeking a skilled and passionate Front-End Developer to join our dynamic team. The ideal candidate should have a deep understanding of modern front-end technologies, responsive design, and a keen eye for UI/UX aesthetics. You will collaborate with the design, backend, and product teams to create scalable and user-friendly web applications.
Key Responsibilities:
- Build and maintain responsive, high-performance user interfaces.
- Work closely with designers, backend developers, and product managers to transform UI/UX wireframes into efficient, high-quality code.
- Optimize web applications for maximum speed, scalability, and cross-browser compatibility.
- Write clean, maintainable, and reusable code while adhering to industry best practices.
- Participate in regular code reviews, troubleshoot issues, and improve performance and user experience.
- Keep up with the latest trends, frameworks, and best practices in front-end development.
Required Skills & Qualifications:
- Bachelor’s degree in Computer Science, Information Technology, or a related field (or equivalent experience).
- Strong proficiency in:
- HTML5, CSS3, JavaScript, TypeScript
- Modern front-end frameworks like React, Next.js, or Vue.js
- CSS preprocessors (e.g., Sass, LESS) and component libraries
- In-depth knowledge of responsive design principles and cross-browser compatibility.
- Experience with version control systems like Git.
- Familiarity with build tools and bundlers such as Webpack, Vite, or Gulp.
- Understanding of RESTful APIs and integrating them with backend services.
- Experience with UI/UX design tools like Figma or Adobe XD.
- Excellent problem-solving skills, strong attention to detail, and the ability to work in a fast-paced environment.
· 12+ years of professional experience in front-end development.
· 7+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.)
· Strong understanding of JavaScript (ES6+), HTML5, and CSS3.
· Experience with RESTful APIs, GraphQL, and WebSocket integration.
· Proficiency in modern build tools (Webpack, Vite, Babel, etc.).
· Expertise in state management libraries (Redux, MobX) and React Query.
· Solid understanding of UI/UX principles and responsive design.
· Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).
· Familiarity with modern CI/CD pipelines and version control tools (Git).
Job Description
- Experience in UI development using React JS
- In depth knowledge of JavaScript, CSS, HTML and front-end languages
- Excellent front-end coding skills, and a good understanding of progressive applications
- Strong knowledge of UI design principles, patterns, and best practices
- Experience working with JavaScript and Typescript, React, Redux, RxJS, Yarn
- Experience in test driven development using modern source control and continuous integration
- Design, develop, test, deploy and maintain software
- Delivering high quality and well-structured code
- 5+ years of relevant experience as an individual contributor working on the frontend technologies
- Strong technical foundation and experience building user interfaces for complex applications.
- Deep proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Thorough understanding of React.js core principles and experience with latest React concepts like hooks, context APIs
- Experience with popular state management libraries like Redux, Flux
- Familiarity with newer specifications of ECMAScript and knowledge of modern authorization mechanisms, such as JSON Web Token
- Experience with common front-end build tools such as Babel, Webpack, NPM, etc.
- Familiarity with Git
- Hands on experience with markup languages
- Background contributing best-practices and architectural leadership to front end applications
- Demonstrable understanding, and experience in dismantling large, abstract problems into smaller, workable tasks.
- Strong interpersonal skills with the ability to effectively collaborate cross functionally with designers, product managers and other engineers.
PREFERRED QUALIFICATION AND SKILLS:
• In depth knowledge of HTML5 • In depth knowledge of CSS3 (Less, Sass, Stylus is a plus), knowledge of BEM methodology is preferred
• Detailed knowledge of JavaScript (ES2015 is a plus) is a must
• Good knowledge of Node.js & npm
• Gulp or Grunt experience is a plus • Experience with Atomic design paradigm is a plus
• Experience in any JS framework(Angular, React + Redux, Vue, etc.,) is must
• Understanding of Web Accessibility WCAG guidelines.
• Must be able to mentor and guide junior technical resources.
• One who is proactive and come forward with technology related initiatives. Motivated selfstarter.
• Good Communication skills. English - Oral and Written.
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
We are looking for a skilled and experienced front-end developer to join our product team. This role requires you to be a tech-savvy contributor in translating the customer needs and user expectations into interactive web apps. You’ll be an exceptional problem solver and take responsible actions in ensuring the application is optimised both in technology and in delivering the best user experience. If you share our passion to create and define interactive web pages, we are happy to hear from you!
What You'll do-
- Work closely with design, product management, and development teams to create elegant, usable, responsive and interactive interfaces across multiple devices.
- Implement UI development principles to ensure that the product client-side serves at scale.
- Review and optimize usage by monitoring key metrics and rectifying the issues proactively.
- Ensure the technical feasibility of UI/UX designs-Turning UI/UX designs into prototypes, creating awesome interactions from designs, writing reusable content modules, and ensuring the maintainability of the code.
- Build reusable code and libraries for future use
- An ability to perform well in a fast-paced environment and bring in optimal flow for rapidly changing design/ technology.
Technical Requirements-
- At least 1 to 3 years of relevant work experience as a web developer, UI developer, JavaScript expert, or a frontend engineer
- Be familiar with Responsive Web Design, common Web UX patterns and anti-patterns
- Be able to tell good design from bad design
- Be able to write clean, maintainable code which others can work on
- Familiar with UI layouts, SASS, bootstrap, and Material UI
- Experience debugging using popular JavaScript-based tools like Chrome Developer Console
- You have mastery in DOM manipulation (including jQuery) and understand components, CTAs
- Know browser behaviour, performance, compatibility and cross-browser issues
- Proficient understanding of code versioning tools, such as Git,
- You take pride in working on advanced CSS, animations and responsiveness
- You seem to have good architectural & design skills
- Ability to own, end to end responsibility - right from the requirement to release
- Ability to produce bug-free and production-grade code
- Be great at debugging, including identifying page speed and performance bottlenecks, using tools like Chrome Dev Tools, React Dev Tools, etc.
- The skills that we consider - CSS, JavaScript, React, Redux, Node.js
Required Skills
- Javascript, ReactJS, Redux, NodeJS, HTML, CSS
Good to have-
- Knowledge of TDD frameworks mocha, chai, jest etc.
- Understanding of Typescript
- Understanding of ReactJS based frameworks like NextJS, Gatsby, etc.
- Understanding of REST API
- Passionate to create good design and usability
Having knowledge of React JS. Having knowledge of Node JS Having Knowledge of HTML, CSS, and JavaScript. Knowledge of web services integration and writing. Need to have strong R&D power Knowledge of GitHub and Jira. A bit of knowledge of code building and docker activity.
- Be a great team player, experienced in working with agile teams. Ability to collaborate closely with developers and UX designers.
- Develop new user-facing features
- Build reusable code and libraries for future use
- Ensure the technical feasibility of UI/UX designs
- 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
- Take pride of ownership in features that are used by users in Global 100 enterprises around the world
Required skills:
- Passionate about building great products with a track record of having worked as part of teams that have built enterprise products in production.
- Motivated to combine the art of design with the art of programming
- Proficient understanding of web markup, including HTML5, CSS3
- Proficient understanding of client-side scripting and JavaScript frameworks such as JQuery, Kendo UI
- Basic working knowledge of MVC Razor
- Good understanding of asynchronous request handling, partial page updates, and AJAX
- Proficient understanding of cross-browser compatibility issues and ways to work around them
- Angular 2 and above is a must
- A great communicator of ideas and solutions and a lateral thinker when faced with complex problem
Qualifications
B.E / B.tech
Any technical or science graduates












