
Similar jobs
Job Overview:
We are looking for a skilled and experienced React developer to join our web development
team. You will play a key role in designing and developing modern, scalable single-page
applications using React and related technologies. You will collaborate with cross-functional
teams, contribute to architectural decisions, and guide junior developers while remaining
hands-on with code.
Key Responsibilities:
● Design, develop, and maintain enterprise-grade React applications.
● Collaborate with UI/UX designers, product owners, and backend developers to deliver
efficient solutions.
● Contribute to and maintain scalable architecture and reusable component libraries.
● Ensure performance, accessibility, and responsiveness of applications.
● Review code and mentor junior developers, promoting best practices and clean code.
● Participate in sprint planning, technical discussions, and continuous improvement
initiatives.
● Research and propose modern frontend technologies and tools for future adoption.
● Create and maintain technical documentation.
Required Skills and Qualifications:
● 7+ years of experience in front-end development, with strong expertise in React and
Redux.
● Hands-on experience building Single Page Applications (SPA).
● Proficiency in JavaScript (ES6+) and TypeScript.
● Familiarity with frontend tooling: Webpack, Babel, ESLint, NPM/Yarn.
● Solid understanding of RESTful APIs, browser internals, and HTTP.
● Exposure to RxJS or similar reactive programming libraries is a plus.
● Should have experience in Hooks concepts.
● Familiarity with REDUX Middlewares like Saga or Redux Thunk.
● Knowledge of testing frameworks like Jest, React Testing Library, Cypress, etc.
● Experience working in Agile/Scrum teams.
● Strong communication and teamwork skills.
● Bachelor’s degree in Computer Science or a related field.
● Experience leading small teams or mentoring junior developers.
● Familiarity with CI/CD pipelines and code quality tools.
● Knowledge of accessibility (WCAG), internationalization (i18n), and performance tuning.
● Contributions to architectural decisions or project planning.
Key Responsibilities:
- Design and implement scalable server-side solutions using Java.
- Write optimized front-end code using HTML, CSS, and Javascript
- Write unit, automation, and integration tests
- Implement quality application logging for operational monitoring at scale
- Investigate, debug and resolve production site issues
- Work with co-located teammates to deliver on common goals
TECHNICAL & FUNCTIONAL REQUIREMENTS:
- Professional experience in enterprise Java software development using Spring MVC frameworks, RESTful APIs, and SOA
- Proficiency in HTML/CSS/JavaScript/jQuery
- Experience with Docker, Kubernetes, and microservices
- Experience with Selenium for UI automated tests written in Cucumber or Scala will be a plus
- Working knowledge of design patterns and CI/CD principles
- First class communication skills in written and verbal form
- Outstanding problem-solving skills
- A commitment to producing high-quality code with an attention to detail
- Dedication and a self-motivated desire to learn
- A collaborative, team-orientated attitude
- Experience working in the Cloud (AWS)
- API development experience
- Exposure to monitoring tools such as ELK, Splunk
About Company: Spica Systems (https://spicasys.com )
Spica Systems is a Silicon Valley based start-up, established in 2019 and are recognized as experts in building products and providing R& DandSoftware Development services in wide range of leading-edge technologies such as LTE, 5G, Cloud Services (Public -AWS, AZURE, GCP, Private -Openstack) and Kubernetes. Ithasa highly scalable and secured 5G Packet Core Network, orchestrated by ML powered Kubernetes platform, which can be deployed in various multi cloud modealong with a test tool. Headquartered in San Jose, California, we have our R& D centre in Sector V, Salt Lake Kolkata.
- Looking for a Software developer who will work on the product's Web UI side
- Hands on and working experience with React JS
- Experience in WebUI using Javascript technology.
- Experience: 2-4 years of React development in a team environment
- In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
- Knowledge of REACT tools including React.js, Webpack, Redux.
- Experience with user interface design. Knowledge of performance testing frameworks including Mocha and Jest.
- Experience with browser-based debugging and performance testing software.
Education: Bachelors/Masters in Computer Science, IT or Mathematics or Engineering
Traits: Quick learner, open minded, willing to learn
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
We are looking for an React.js Developer to join our awesome team and deliver a streamlined user experience. We want a team member who strives to develop a first class codebase using react best practices. As an ReactJS Developer, you will implement a complete user interface in the form of a mobile and desktop web app.
Duties and Responsibilities
• Designing and developing user interfaces using React.js best practices.
• Adapting interface for modern internet applications using the latest front-end technologies.
• Writing tested and documented JavaScript, HTML and CSS
• Make design and technical decisions for ReactJS projects.
• Develop application code and unit test in the ReactJS, Rest Web Services and Java technologies for the Application Development Center.
• Ensuring high performance
Requirements and Qualifications
• Bachelor’s Degree in Computer Science, Computer Engineering or similar.
• Previous work experience as an React.js Developer.
• Proficient in CSS, HTML, and writing cross-browser compatible code.
• Excellent project management skills.
• Proven experience implementing front-end and back-end JavaScript applications.
• Excellent communication skills.
• Critical thinker and good problem-solver.

- 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 browsers
- Integrating Backend APIs with User interfaces
- 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, Auth 2.0 etc
- Familiarity with modern front-end build pipelines and tools
- Experience with common front-end development tools such as 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 such as Git
In this role you will
- Be a part of a small UI team and will work closely with the UXdesigner and product manager to shape the product design.
- Build web UI components for a cloud-native SaaS product.
- Drive clear requirements for the backend APIs working closely withthe backend engineers.
- Focus on quality and velocity by developing appropriate tests.
Requirements
- Highly motivated self-starter with a builder’s mindset.
- 5+ years of web UI development experience.
- Highly skilled in JavaScript, HTML and CSS.
- Deep knowledge and experience of REST APIs.
Preferred: experience with frameworks such as React
Preferred: full stack development experience










