
React JS Developer
ROLES AND RESPONSIBILITIES
- Build an advanced e-commerce admin dashboard application for our platform.
- Proven working experience in React JS app development and experience with Web packs and integration with NodeJS.
- Good understanding of Hooks and Redux State Management tools.
- Understanding of React Design principles and architecture patterns.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Work with outside data sources and APIs like the one of Unicommerce.
- Create Unit-test code for robustness, including edge cases, usability, and general reliability. Work on bug fixing and improving application performance.
- Continuously discover, evaluate, and implement new maximizegies to maximize development efficiency.
- Translate designs high-quality into high quality code.
- Have a good understanding of CI/CD tools (any).
- Robust knowledge of popular databases like MongoDB, Elastic Search, DynamoDB, Redis etc;
- Knowledge about AWS Amplify is super plus.
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- CANDIDATES MUST HAVE
- · React JS, Redux
- · Hooks and redux state management
- · React design principles
- · Architectural pattern
- · Unit test code
- · High-level design
- · Ci/cd tool
- · Elasticsearch, DynamoDB, Redis
- · AWS amplify
- · ES6/ ECMAScript, JavaScript,
- · NodeJS ,IDEs, Restful API’s , Git
REQUIREMENTS
- Bachelor’s degree in computer science, software development, engineering, or a related technical field
- Proficient with the latest versions of ECMAScript (JavaScript) as well as HTML and CSS
- Knowledge of React and common tools used in the wider React ecosystem, such as Node.js and npm
- Familiarity with common programming tools such as Redux, IDEs, RESTful APIs, Git repositories, TypeScript, version control software, and remote deployment tools
- An understanding of common programming paradigms and fundamental React principles, such as React components, hooks, and the React lifecycle

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What will you do?
• Developing new user-facing features using React & Redux
• Build modular layouts, reusable code and libraries for future use
• Refactor, optimize and improve the existing code base for maintenance and scale
• Use test-driven development and acceptance tests to ensure feature quality
• Design and implementation of low-latency, high-availability, and performant applications
• Optimize application for maximum speed and scalability
• Work closely with back-end developers to make sure the user experience is implemented as it was conceived
Skills Required
• Strong proficiency in JavaScript, object model, DOM manipulation and event handlers, data structures, algorithms, JSX, and Babel
• Complete understanding of ReactJS and its main fundamentals like JSX, Virtual DOM, component lifecycle, etc.
In-depth understanding of redux
• Understanding of RESTful APIs, HTML/CSS, ES6 (variables and scoping, array methods), code versioning tools like GIT, and NPM
• Good understanding of Promises, Async/ Await and Callbacks
• Should have good knowledge of Socket
• Understanding the nature of asynchronous programming and its quirks and workarounds
• In-depth knowledge of object-oriented programming
• Understanding of JavaScript Development on the server side using NodeJS and Express would be a plus
• Knowledge of ES6 would be a plus
• Should have good hands-on experience on MongoDB, designing optimized database structures using MongoDB and writing optimized queries for better performance
Profile Overview:
We are looking for passionate and keen-eyed front-end developers with 5+ years of experience in React JS for a major project to join our creative front-end development team who can add optimization and efficiency to the user experience and maintain brand consistency across all web page of the web products.
The front-end developer will closely coordinate with our back-end developers, graphic designers and UI designers to ensure all elements of the web creation are consistent.
Responsibilities:
• Turning UI/UX designs into prototypes, creating excellent interactive forms of designs, writing reusable modules and maintainability of the code.
• Implement UI development principles to ensure that the product client-side serves at scale.
• Review and optimize the application usage by monitoring key metrics and rectifying the issues proactively.
• Determining the structure and design of web pages.
• Ensuring user experience by analyzing the design choices.
• Developing features to enhance the user experience.
• Striking balance between functional and aesthetic design.
Requirements:
- Bachelor’s or Master’s degree in computer science, computer applications or related fields.
- Proven working experience as a React Developer for 5+ years and above.
- Hands-on experience with HTML5, CSS3, and CSS frameworks.
- Demonstrable knowledge of Web services, Web API, REST services & GraphQL.
- Expertise in UI design and development of responsive web applications using React, Redux, Flask and Hooks.
- Applicable knowledge of Social API integration, Core location APIs, Web Views, Payments integration
- Proficiency in understanding layout aesthetics.
- Excellent analytical, problem-solving and multitasking skills.
- Ability to solve novel and challenging React problems.
- Capability to understand, develop and sustain continuous integration and delivery.
* Work with the product managers and designers and co-own our consumer app (1M+ userbase)
* Own our admin dashboard for all the product offerings - digital gold, gold loan, & gold locker
* Architect, design, and maintain frontend libraries for both our consumer application and admin dashboard
* Mentor team of 3 - 4 frontend developers to build a robust, lightweight, and high-performance client-side app
* Translating designs and wireframes into high quality Typescript code
* Write documentation and guides for consumer app & admin dashboard
Key Qualifications
* Expertise in ReactJS/Redux
* Expert-level knowledge in TypeScript or Flow
* PURE experience of 3- 5 Years and more in Frontend Development
* Expert-level knowledge of developing, shipping, and maintaining Javascript applications
* Knowledge of general software design patterns
* Good understanding of CSR and SSR
* Deep understanding of Javascript
* Up-to-date on the latest build tools, and libraries such as ES6, Webpack, Babel
* Proficient in Javascript with strong object-oriented design skills
* Able to work independently and drive results
Bonus
* Previous work experience in product-based (B2B/B2C) / fintech startups
* Contributed/maintained to an open source library
1. Candidate should be expert to design, develop, test and deploy solutions based on industry's best practices and client's business requirements. This position requires highly proficient knowledge of Shopify liquid code, PHP and its advance concepts.
3. Strong in PHP and it's framework like Laravel, must be competent in shopify app development and shopify apps architecture.
Angular Developer
Key Responsibilities:
Responsible for coding the execution of complex designs and interactions that reflect the creative and art direction provided within the established technical framework
Responsible for creation of all coded UI deliverables
Able to shift between a creative and a technical focus depending on the project need and/or the type of project
Establishes presentation layer requirements
May need to rapidly produce interim deliverables (such as style guide components, technical specifications, browser and market analysis, prototypes, proofs of concept, etc.) in addition to the final live application
Participates in scoping and planning work
Participates in writing detailed technical and functional specifications documentation
Able to take initiative to research and learn emerging technologies
Required Skills:
Expertise in angular 4+ & above is highly preferable
Hands-on experience in Typescript, JavaScript, visualization libraries like D3
Experience in consuming REST services and implementing dynamic UIs.
Understanding of design patterns commonly used in large-scale web applications.
Experience in building high-performing and maintainable web applications.
Understanding of CI/CD will be preferred.
Knowledge of CSS pre-processors like SASS.
Proficient understanding of version management tools like SVN, Git.
Education
- Bachelors or master’s degree in Computer Science or related field
Relevant Experience
- 4 to 6 years
- Build fluid, scalable, responsive, and consumer-centric web platforms that target users across a wide array of devices
- Collaborate closely with designers & backend developers and contribute to the full product development life-cycle from design and development to roll out
Take ownership of work and deliver quality results consistently - Own the delivery of multiple features in a fast-paced work environment
- Build optimized and modular components to provide performance-oriented solutions
- Work in a dynamic and collaborative culture ensuring good teamwork and communication with remote team members when needed
Qualifications
- 4+ Years of experience in frontend web development (1+ in ReactJS)
- Strong past experience of building, scaling and maintaining feature-rich customer-facing single-page applications
- Ability to translate designs into UI elements with accuracy and an eye for fluidity and responsiveness; strong grasp of any of CSS / sass / less
- Proven ability to implement key concepts of state management, security, and caching practices in enterprise-level web applications used at scale
- Proficient understanding of compatibility issues across different browsers and web and mobile devices and available ways to work around them
- Familiarity with the react ecosystem and popular libraries in that ecosystem
- Strong grasp over core web development concepts like HTML5, JavaScript, CSS3, general Web 2.0 techniques, and working without modern component libraries
- Experience with designing secure web applications with a strong understanding of common security vulnerabilities and best practices
- Understanding of data structures, algorithms and object-oriented programming
- Strong grasp over concepts of performance, optimization, lighthouse, etc
- Strong handle over Git, following best practices to facilitate collaboration
Skills that will give you an edge
- Hands-on experience with supporting payments and integrating payment gateways
- Experience with progressive web apps, service workers
- Strong grasp over frontend unit and end-to-end testing frameworks
Sunday Mobility is hiring for Angular Developer....
Experience: 3 to 5 years
Skills:- Angular 2+, HTML, CSS, Javascript , typescript, git
Notice period- Immediate to 30 days
Immediate Joiners Preferred
● Collaborate with cross functional teams to define, design and push new features and
innovative front-end solutions. Translate UI/UX design wireframes to actual code that will
produce visual elements of the application.
● Continuously discovering, evaluating, and implementing new technologies to maximize
development efficiency.
● Provide technical leadership towards new UI architectures.
● Unit-testing code for robustness, including edge cases, usability, and general reliability.
● Create and be accountable for user interaction model, workflows, information architecture,
prototypes and guidelines for user interfaces.
● Work closely and collaborate with other members of the development teams to ensure
smooth integration of the UI component with back end technologies
● Should have executed a production level end to end UI application on his own
● Hands on contributor who played an important role in implementing the proposed
architecture and design
● Excellent command over HTML5, CSS,Javascript,Jquery,Ajax,MVVM. Proficient
understanding of web markup.
● Good working knowledge of Bootstrap, Angular 7+, Node.js, Ember.js, Can.js, React.js
● Ability to develop test cases for UI applications functionality and flow testing
● Good knowledge of caching and memory management for UI applications
● Exposure to data visualization libraries such as D3.js
● Designing and building responsive web applications
Educational Qualifications/Requirements:
● 4+ years development experience.
● BE/BS in Computer Science, Management and Information Systems, or equivalent
● Problem Solver: Ability to formulate/implement technical solutions, proven ability to
understand, analyze and solve issues with guidance.
● Strong UI development experience in modern web technologies(HTML/CSS, JavaScript),
frameworks (Backbone.js, jQuery, AngularJS, Bootstrap, Knockout, etc)
● Expertise in Data Structures, Algorithms, Concurrency.
● Thorough understanding of the responsibilities of the platform , database , API , caching
layer , proxies , and other web services used in the system
● Knowledge of Java fundamentals, RESTful Web Services, JUnit testing, Java Script
Testing frameworks like Protractor & Jasmine. Test Driven Development (TDD) experience a
plus.
● Avid Learner/Contributor: Quick learner, great ability to listen and communicate well
verbally and written.
● Experience in internationalization/localization.
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











