
Job Title: Senior React.js Developer
Experience: 5+ Years
Location: Pune
Employment Type: Full-Time
Job Summary:
We are looking for a skilled React.js Developer with 5+ years of experience to join our team. You’ll build scalable, high-performance web and mobile applications, work closely with designers and backend developers, and ensure responsive and user-friendly UI/UX across platforms.
Key Responsibilities:
- Develop dynamic, reusable components using React.js, JavaScript, HTML5, and CSS3
- Integrate wireframes and UI/UX designs into functional front-end interfaces
- Ensure cross-browser/platform compatibility and responsive design
- Optimize apps for speed and scalability
- Implement and maintain unit and E2E tests (Jest, Playwright, Puppeteer)
- Integrate with RESTful APIs and backend services
- Maintain code quality and performance standards
- Collaborate with designers, product managers, and backend engineers
- Mentor junior developers and contribute to best practices
Required Skills:
- 5+ years in front-end/UI development
- Strong in React.js, JavaScript (ES6+), HTML5, CSS3
- Experience with Redux, SASS/LESS, REST APIs
- Familiarity with performance optimization tools
- Solid understanding of UI/UX design principles
- Excellent communication and team collaboration skills
- Bachelor’s degree in Computer Science or related field

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
Connect with the team
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Job Summary:
We are looking for a highly skilled Shopify Developer with strong expertise in HTML, CSS, JavaScript, jQuery, Shopify Liquid, AJAX, and API integrations. The ideal candidate will be responsible for designing, developing, and maintaining Shopify stores while implementing custom features and integrations to enhance the user experience and optimize performance.
Key Responsibilities:
- Develop and customize Shopify themes using Liquid, HTML, CSS, JavaScript, and jQuery.
- Implement AJAX functionalities for seamless user interactions.
- Integrate third-party apps and APIs to extend store functionalities.
- Optimize Shopify websites for speed, performance, and SEO best practices.
- Develop custom Shopify apps and solutions as per business requirements.
- Debug and troubleshoot Shopify-related issues, ensuring a seamless user experience.
- Work closely with designers and stakeholders to bring creative concepts to life.
- Maintain and update existing Shopify stores as needed.
Required Skills & Experience:
- Strong proficiency in HTML, CSS, JavaScript, and jQuery.
- Expert knowledge of Shopify Liquid and theme development.
- Experience with AJAX and API integrations for Shopify.
- Familiarity with Shopify’s REST & GraphQL APIs.
- Understanding of Shopify’s checkout, payment gateways, and cart functionalities.
- Knowledge of version control systems like Git.
- Strong problem-solving skills and ability to debug complex issues.
Work Responsibilities
- What You’ll Do:
- Engineers will develop and improve features for products such as WebView pages called from within Mercari’s web version and native app, along with tools used by the Customer Support Team for answering user inquiries and providing transaction support.
- Senior engineers in the Frontend Team are expected to use their technical skills to lead the team and product development, train members through design and code reviews, and make contributions and improvements to the hiring process, including technical tests.
- Development Environment:
- Languages: HTML, CSS, JavaScript, TypeScript, React, Gatsby, Next.js, GraphQL, Apollo Client, Redux, Cypress, Rendertron, Lit, Playwright
- Infrastructures: Google Cloud Platform (Compute Engine, Kubernetes Engine, App Engine)
- Configuration management tool: Terraform
- Other: Circle CI, GitHub, Slack, JIRA, Crowi, Spinnaker, Datadog
Minimum Requirements
- Shared understanding and belief in Mercari Group's mission and values
- At least 3 years of experience in development related to frontend fields such as web browsers, JavaScript, TypeScript, React.js, Next.js, or Redux
- Experience with developing and operating large-scale products
- Ability to design and develop with performance and scalability in mind
- Ability to use HTML and CSS to implement solid user interfaces
- Knowledge of JavaScript and experience developing with UI libraries or frameworks such as React, Vue.js, and Angular
- Able to understand and explain web operation principles and browsers
- Understanding of version management and ability to participate in development via Git
- Effective communication skills, needed for product development with team members and with other teams
Preferred Requirements
- Extensive knowledge of standard web technologies and specialized knowledge in some areas, like TypeScript, React.js, Next.js, Redux
- Understanding of the characteristics of different libraries/frameworks and the ability to introduce them to projects where necessary
- Ability to design architecture based on the characteristics of the app
- Ability to consistently take initiative in implementing improvements to the app
- Project management and/or team leadership
- Cloud development experience (preferably GCP or AWS)
- Experience contributing to an open-source project
- Familiarity with CI systems and the release process
Working Conditions
Employment Status
Full-time
Office
Bangalore
- Hybrid Workstyle
Role: Angular JS Developer
Exp: 3+ Years
Notice Period Duration - 30 days and under / Serving Notice Period
Job description:-
- Strong experience of Angular 2+ and above along with other technologies like HTML5, CSS, jQuery, AJAX with good knowledge of ECMA Scripts.
- Strong knowledge of JS Fundamentals.
- Design & development of Angular applications as per desired specifications, along with experience in frameworks/libraries like jQuery, Bootstrap, Typescript etc.
- Architecture design, development, testing and maintenance of Web Apps, Implementation based on Angular Application MVC Patterns.
- Own end to end product modules/features (from the requirement to going live)- Design & code review, troubleshoot & help team members on issues.
- Gather requirements by interacting directly with the end-users.
- Research on open source framework/technology required for developing the feature/application.
- Knowing and working on what specific framework problems need to be solved, what new problems they give rise to, and the architectures that work at scale.
- Coordinating with the design and back-end teams
- Taking risks, and learning quickly from your mistakes.
- Brainstorming between various approaches, doing small experiments to test the hypotheses
- Aligning the team to follow a particular approach, being thorough in your research.
- Collaborating well with others, knowing that better solutions come from working together.
What you need to have:
- Bachelor's degree in Computer Science (or related field)
- A passion for system design problems, exposure to various tech frameworks
- Experience with React Js, React Native, JavaScript including DOM Manipulation, and JavaScript object model.
- Should have a crystal understanding of App architecture and how React Native interacts with the native layers for iOS and Android respectively
- Familiarity in using Hooks for functional components with state, PureComponents.
- Hands-on experience in using State Management Libraries (Mainly Redux).
- Understanding React Native internals, memory profiling, and performance improvements of the application.
- Experience with building projects in Gradle (Android Studio) or xCode with iOS.
- Create Energy - Insatiably curious.
- Experience in Agile/ SCRUM methodology and modern tools like Jira, Slack, GitHub, etc
Appristine Technologies. We are based in Pune and offer an exciting working environment along with very attractive remuneration, to all deserving candidates. Currently, we are hiring for the following role.
1. ReactJS Developer – 2+ Years Exp.
Skills & Knowledge
• Minimum 3 years of development experience in React and Redux.
• Good understanding and experience of HTML / CSS / Javascript / Webpack / Bootstrap.
• Hands-on experience with ES6 / ES7 / ES8 features.
• Expertise with Web Services / REST APIs.
• Skillful experience in Node JS / Express / MongoDB will be a plus.
• Understanding of mobile cross-platform frameworks like React Native.
Experience Level: 5 to 8 Years
Job Location: Hyderabad
Skills required
Good at Angular 4.X
Good at JavaScript, JSON
Good at HTML, CSS, Bootstrap
Aware of Karma tool for testing
Aware of Material Design
Aware of Kendo UI
Good At communication
Aware Agile, JIRA and GIT
Regards,
Tetrasoft India Pvt Ltd!
Stay home and Stay safe
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

- Very Strong communication and consulting skills
- Strong front-end development skills, experience with JavaScript libraries/frameworks mainly Angular JS Preferably Version 7 or Version 5
- Experience working with server-side JavaScript Frameworks and build tools (node.js, bower, grunt, gulp)
- Demonstrable experience developing large-scale applications using one or more MV* patterns (MVVM, MVC, MVP)
- Expertise in developing single page web applications using front-end routing, consuming JSON-based RESTful APIs, client-side templating
- Strong competency in responsive layouts leveraging CSS and media queries and related UI frameworks (e.g., Bootstrap, Foundation)
- Experience with CSS preprocessors (e.g., Sass, LESS)
- Experience with code analysis tools (e.g., JSLint, JSPerf)
- Practical knowledge of web page optimization techniques and guidelines for fast page load times
- Strong understanding of Ajax and/or promises
- Experience working in an agile, multidisciplinary team.
- Experience working with a distributed version control system (git, mercurial)
- Experience writing unit tests in one or more of the following: karma, mocha, chai, sinon, jasmine, jest
- Experience working on AWS. Basic understanding of Security Groups/ VPC etc.
- Experience on working with & integrating with microservices
- Experience on developing/ using CI/CD pipeline using Jenkins/ Git










