React.js Developer at Semperfi Services and Solutions · Bengaluru (Bangalore) · 4 - 6 years · ₹1L - ₹15L / yr · Bootstrapped · Posted 1 Jul 2022
Responsibilities:
- Write effective, scalable code
- Develop Connectors tool GUI for various source and target systems/platform/products
- Test, debug, build and deploy UI components in the existing product
- Improve functionality of existing SDK/Frameworks
- JavaScript
- ReactJS
- Redux-Saga
- ES6 (or TypeScript) syntax
- Good problem-solving
- Good debugging
Good to Have:
- TypeScript experience
- Material UI experience
- JEST knowledge
- Git and Github/Gitlab/Bitbucket experience

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Job Title : React.js Developer with PWA Studio
Location : Remote
Experience : 10+ Years
Job Description :
We are looking for a highly experienced Frontend Developer with a strong background in React.js and PWA Studio to work on cutting-edge eCommerce solutions built on the Magento platform.
This role requires deep expertise in Progressive Web App development (PWA), frontend architecture, and performance optimization.
Mandatory Skills :
React.js, Next.js, PWA Studio, Magento 2.x integration, JavaScript (ES6+), HTML5, CSS3, Redux, RESTful APIs, GraphQL, Git, performance optimization, responsive design.
Key Responsibilities :
- Design and develop high-performance, scalable front-end solutions using React.js and Next.js.
- Build and optimize Progressive Web Apps (PWAs) using Magento PWA Studio.
- Collaborate with backend developers to integrate with Magento 2.x APIs and ensure seamless user experiences.
- Implement and maintain responsive UI components using HTML5, CSS3, JavaScript (ES6+), React, and Redux.
- Optimize application performance using tools like Lighthouse, Webpack, and advanced code-splitting techniques.
- Develop and maintain robust CI/CD pipelines and manage deployments via Vercel.
- Ensure high code quality by writing unit and integration tests using frameworks such as Jest, Mocha, or Cypress.
- Work closely with product and design teams in an Agile environment to deliver user-centric solutions.
Mandatory Skills :
- 10+ years of frontend development experience.
- Expert in React.js, Next.js, and JavaScript (ES6+).
- Hands-on experience with Magento PWA Studio.
- Proficient in HTML5, CSS3, Redux, and responsive design.
- Deep understanding of RESTful APIs and GraphQL.
- Strong knowledge of Git and version control best practices.
- Solid experience in performance optimization for web applications.
Good to Have :
- Experience with Magento 2.x backend.
- Prior experience deploying frontend apps with Vercel.
- Familiarity with serverless architecture and CI/CD in cloud environments.
• Minimum 4+ years relevant experience in application development and React JS.
• Knowledge of React hooks such that use Context, use Reducer, use Effect.
• Knowledge of React props and state management (both functional and class component)
• Strong understanding of Error boundary concept of react.
• Work experience with any react based UI library or Redux is preferable
• Experience in building cross-browser layouts with CSS and HTML
We are looking for a good JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.
Responsibilities
- 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
Skills:
- 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 (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
- Familiarity with modern front-end build pipelines and tools
- 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, SVN, and Mercurial)
Type, Location,
Full Time @ Anywhere in India
Desired Experience
3+ years
Job Description
What You’ll Do
- Taking an active role in architecting the solutions we build
- Designing and implementing web applications using JavaScript and its frameworks (i.a. React, Vue, Angular), HTML5 and CSS3
- Working closely with the dispersed development team, client, and project manager in the SCRUM methodology
- Ensuring that programming practices and code quality are respected
- Supporting other engineers with your expertise when needed (knowledge sharing)
- Leading your colleagues’ growth and development
What you bring to the table
- 3+ years of experience with JavaScript (good knowledge of ES2016; newer versions and TS 3+ are a plus)
- Experience in developing web applications using Angular2+ and another modern framework
- Being comfortable HTML5 and CSS3
- Experience with version control systems, preferably Git
- Demonstrated tech leadership in a medium-sized team, and the ability to design a complex system
- Eagerness to learn and constantly improve yourself
- Being a team player focused on getting things done

- Skills: Angular 2+, JavaScript, HTML, CSS.
- Experience: 5-9 years.
- Experience with JavaScript libraries and frameworks.
- Should have strong sense of web design and attuned to the fundamentals of user experience.
- Should able to design, build and maintain efficient, reusable, and reliable front-end code.
- Looking for an expert JavaScript developer who is highly skilled with Vue.js and Vuex(redux).
- Someone with the ability to create testable, reusable, and scalable code.
- Someone very good at understanding requirements and developing services & features quickly.
- Good communication skills & team player, who engages with all stakeholders of the project to add clarity for all aspects of the ongoing software development project.
Your responsibilities will include:
- Collaborate with project stakeholders, gather requirements, and develop the UI application.
- Create reusable, effective, and scalable VueJs Code.
- Implement front-end components with Vue.js and Vuex(redux) framework.
- Ensure developing robust, secure, modular, and maintainable code.
- Translate technical requirements into code.
- Build responsive UI screens with cross-browser & cross-platform support.
- Test and update web applications.
Key Requirements :
- Degree in Computer Science, Engineering or a related field.
- Highly proficient with the JavaScript language and its modern ES6+ syntax and features.
- Experience with the Vue.js ecosystem, including Vue CLI, Vuex, Vue Router, and Nuxt.js
- Should be having strong knowledge in HTML, HTML DOM, Bootstrap, Stylus, Sass, Less, CSS, and npm for builds.
- Good problem solving, decision making, and prioritization
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This job is on Contrecting role Max $70/hr
Java or Scala web developer with 8 to 12 years of experience and strong fundamentals/proficiency in core technologies used for web development - HTML, CSS, JavaScript, Spring and Hibernate (to include relational database experience). -
Object oriented analysis and design patterns using Java/J2EE technologies,
-
Knowledge on Spring Framework, MVC architectures, ORM frameworks like Hibernate
-
Experience with Restful Web Services, data modeling
-
Strong experience in relational database design and development (preferably with Oracle) and understanding of NoSQL databases like HBase, Druid, Solr
-
Experience working with event/message-based communication platforms such as Kafka, ActiveMQ etc.,
-
Experience working with Hadoop technologies and Spark framework
-
Working proficiency in build and development tools (Maven, Gradle, Jenkins)
-
Experience with test frameworks like JUnit, Mockito
-
Experience in front end development using modern JavaScript frameworks and charting frameworks
Company Introduction
We started Kool Kanya because we want young women to own and create their futures. We propel and empower you with knowledge, skills, and access to curate jobs that resonate with you. You can count on us to support you through all your career stages and challenges. We are truly here to create the workforce of the future.
We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well- known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative
problem solving, sophisticated design, and quality product is important.
What we are asking
· 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 browser
Skills and qualification
· 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
· Familiarity with modern front-end build pipelines and tools
· Experience with common front-end development tools such as Babel, 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 e.g. git








