

Key Responsibilities:
² Develop and maintain responsive web applications using React.
² Collaborate with UX/UI designers to translate wireframes and mockups into functional code.
² Optimize applications for maximum speed and scalability.
² Write clean, maintainable, and efficient code following best practices.
² Participate in code reviews and contribute to team knowledge sharing.
² Troubleshoot and debug applications to enhance performance.
² Stay up-to-date with the latest industry trends and technologies to ensure our tech stack remains cutting-edge.
Qualifications:
² Current SDE 3 designation or equivalent experience in a senior development role.
² 5+ years of experience in software development, with a strong focus on frontend technologies, particularly React.
² Proficiency in JavaScript (ES6+), HTML, and CSS, with a deep understanding of modern web development practices.
² Experience with state management libraries (e.g., Redux, MobX) and routing solutions.
² Strong knowledge of RESTful APIs and experience with modern build tools (Webpack, Babel).
² Experience with testing frameworks (e.g., Jest, React Testing Library) and test-driven development (TDD).
² Excellent problem-solving skills and the ability to work collaboratively in a fast-paced environment.

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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About One Impression
One Impression is one of the world’s largest influencer marketing platforms, working with 300+ global brands like Unilever, Nestle, and Amazon to connect with a diverse creator network. Our platform empowers brands and creators to collaborate seamlessly and scale their reach. To capture a significant share of global media ad spend, One Impression is quickly becoming the industry’s go-to influencer marketing platform.
About the Role
We are looking for a Frontend Engineer (SDE II) who is experienced in both React.js for Web and React Native for Mobile Apps. You will be responsible for architecting, implementing, and optimizing web and mobile applications while collaborating closely with Product, Design, and Backend teams.
This role is perfect for someone who enjoys working across platforms, building scalable systems, and enhancing the developer experience.
Key Responsibilities
- Architect and develop frontend solutions for both Web (React.js) and Mobile Apps (React Native).
- Build and optimize config-driven systems, reusable components, and common libraries.
- Work closely with Product Managers, Designers, and Backend Engineers to create seamless user experiences across platforms.
- Own and drive React Native-based mobile applications, ensuring modular, scalable, and performant code.
- Optimize web and mobile performance for speed, responsiveness, and efficiency.
- Set up and manage CI/CD pipelines for both web (Docker, Vercel) and mobile apps (Fastlane, App Store/Play Store).
- Implement and maintain state management using Redux, Redux Saga, Recoil, or MobX.
- Work with mobile-specific integrations, such as Firebase Push Notifications, Deep Linking, and Native Modules.
- Ensure cross-platform consistency by handling browser compatibility (web) and device compatibility (mobile).
- Write clean, maintainable, and reusable code, following best practices and design patterns.
- Debug and fix issues rapidly, ensuring a seamless Web & Mobile experience.
- Stay up-to-date with the latest trends and contribute to open-source projects, tech talks, and internal knowledge sharing.
Requirements
- 3-5 years of experience in frontend development, working with both React.js (Web) and React Native (Mobile).
- Strong expertise in JavaScript (ES6+), React.js, and React Native.
- Experience with bundlers like Webpack, Rollup, and Metro for React Native.
- Deep understanding of mobile CI/CD (Fastlane, App Store, Play Store) and web CI/CD (Docker, Vercel, Jenkins, GitHub Actions).
- Strong grasp of Web & Mobile performance optimization techniques.
- Experience with Redux, Redux Saga, MobX, or Recoil for state management.
- Good understanding of mobile UI/UX principles, animations (Reanimated, Gesture Handler), and responsive design.
- Basic familiarity with native iOS/Android development (Swift/Kotlin is a plus).
- Experience with Unit Testing (Jest, React Native Testing Library, Detox, Cypress, Appium, or Espresso).
- Strong debugging skills using Chrome DevTools (Web) and Flipper, Xcode, Android Studio (Mobile).
- Ability to work independently, take ownership of projects, and mentor junior engineers.
- Open to feedback and collaborative in working towards the best user experience.
Why Join One Impression?
- Be a part of one of the largest influencer marketing platforms globally, working with top brands and influencers.
- Opportunity to lead and shape a fast-growing marketplace product.
- Competitive salary and benefits package.
- A collaborative and innovative work culture in a rapidly scaling company.


React.js Developer Job Description
We are looking for a skilled react.js developer to join our front-end development team. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack. You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase.
To ensure success as a react.js developer, you should have in-depth knowledge of JavaScript and React concepts, excellent front-end coding skills, and a good understanding of progressive web applications. Ultimately, a top-class react.js developer should be able to design and build modern user interface components to enhance application performance.
React.js Developer Responsibilities:
- Meeting with the development team to discuss user interface ideas and applications.
- Reviewing application requirements and interface designs.
- Identifying web-based user interactions.
- Developing and implementing highly responsive user interface components using react concepts.
- Writing application interface codes using JavaScript following react.js workflows.
- Troubleshooting interface software and debugging application codes.
- Developing and implementing front-end architecture to support user interface concepts.
- Monitoring and improving front-end performance.
- Documenting application changes and developing updates.
React.js Developer Requirements:
- Bachelor’s degree in computer science, information technology, or a similar field.
- Previous experience working as a react.js developer.
- In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
- Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
- Experience with user interface design.
- Knowledge of performance testing frameworks including Mocha and Jest.
- Experience with browser-based debugging and performance testing software.
- Excellent troubleshooting skills.
- Good project management skills.

should have basic knowledge of UI/U, PHP , MYSQL, CSS, BOOTSTRAP

The Web Developer Intern role supports and assists the web development team in coding, modifying and delivering technically feature rich websites web applications, portals and platforms with focus on robustness, security, technical superiority and innovative features in line with client expectations.
1. Basic principles of clear navigation and interactive experiences is an essential.
2. Development tasks range from basic site layouts to complex ecommerce portals and start up solutions.
3. The roles are fungible to accommodate front end or server side development.

Who we are
Jivox is transforming the way the world experiences digital marketing. We connect brands with their audiences in the most personalized way: using big data, AI/machine learning, Dynamic Creative Optimization (DCO), customer journey optimization, and identity technologies to deliver omni-channel precision marketing.
Recognized as a leader in creative advertising technologies by Forrester Research, Jivox delivers 1:1 messaging throughout the customer journey, seamlessly linking paid and owned media. Our portfolio of global clients includes the likes of Marriott, Mazda, Unilever, Nestle, IBM, Vodafone, and Heineken.
A Powerful Dynamic Creative Personalization platform serves millions of ad impressions a day and evaluates 30 billion+ rules / day. Our proprietary machine learning technology, powers personalization in real-time, creates personalized experiences across all channels including display, video, native and social.
Experience: 2 to 5 years of experience
Relevant experience in Javascript: Min 1 year
Must Have
- Hands-on in HTML5 and CSS3 and JavaScript
- Knowledge of jQuery, GreenSock, JSON and XML
- Good to have cross-browser / Cross-platform compatibility knowledge.
- Unit testing skills
- Debugging skills
- Know how to slice and dice images using Photoshop
- Should able to write the code using the mentioned technologies and should be able to debug over multiple OS across browsers
Good to Have
- Experience in PHP, MySQL
- Knowledge of Adobe Animate (Canvas)
- Knowledge of Adobe Edge
- Knowledge of Google Web Designer (GWD)
- Knowledge in Digital Marketing
Soft Skills requirement:
- Excellent and effective communication skills.
- Good interpersonal skills.
- Be flexible and approachable at all times.
Education: Bachelors degree in Engineering or equivalent experience within the field.


Experience: 7 to 11 years
Responsibilities
- Architect web applications keeping in mind speed, performance, and maintainability
- Develop new user-facing features
- Build reusable code, components, and libraries for future use
- Ensure the technical feasibility of UI/UX designs
- Optimize application for maximum speed and scalability
- Obsesses over web performance and speed
- Collaborate with other team members and stakeholders
- Plan, write and maintain testable code and components
- Write meaningful unit and e2e tests
- Implement CI/CD for front end web applications
Skills And Qualifications
- Proficient understanding of web markup, including HTML5, CSS3, and JS (ES6 preferred)
- Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS
- Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery
- Good understanding of one or more javascript frameworks
- Good understanding of asynchronous request handling, partial page updates, and AJAX
- Proficient understanding of cross-browser compatibility issues and ways to work around them.
- Proficient understanding of code versioning tools
- Proficient understanding in any one testing frameworks
- Proficient understanding of website security and web memory management









