
Job Summary:
We are seeking a highly skilled and hands-on UI Developer with strong expertise in React.js and JavaScript to join our front-end engineering team. The ideal candidate will have at least 5 years of experience in developing scalable, high-performance, and user-centric web applications. You will be expected to contribute immediately, owning development tasks end-to-end — from design and coding to performance tuning and deployment.
Key Responsibilities:
- Design and develop responsive, high-quality user interfaces using React.js, JavaScript, HTML5, and CSS3.
- Collaborate closely with UX designers, backend developers, and product managers to translate business requirements into technical implementations.
- Write clean, efficient, and reusable code following best practices and modern front-end standards.
- Optimize components for maximum performance and scalability across various browsers and devices.
- Participate in code reviews, ensuring adherence to coding standards and best practices.
- Troubleshoot, debug, and resolve UI-related performance or compatibility issues.
- Stay up to date with emerging front-end technologies and continuously enhance the development process.
Required Skills & Qualifications:
- Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
- 5+ years of professional experience in front-end/UI development.
- Deep hands-on experience with React.js and core JavaScript (ES6+).
- Strong understanding of HTML5, CSS3, and modern UI frameworks/libraries.
- Experience with React hooks, state management (Redux or Context API), and component-based architecture.
- Familiarity with RESTful APIs and integration of front-end applications with backend services.
- Experience with Webpack, Babel, NPM/Yarn, and modern build tools.
- Solid understanding of version control systems (Git).
- Strong debugging and performance optimization skills.
- Ability to deliver results in a fast-paced, agile environment.
Good to Have Skills:
- Experience with TypeScript, Next.js, or React Native.
- Knowledge of testing frameworks such as Jest, Mocha, or React Testing Library.
- Familiarity with CI/CD pipelines and DevOps tools.
- Understanding of UI/UX design principles and ability to collaborate effectively with designers.
- Exposure to cloud environments (AWS, Azure, or GCP).
- Experience in performance profiling and accessibility (a11y) best practices

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 Description:
Responsibilities:
- Lead frontend architecture and ensure code quality, scalability, and performance.
- Drive the development of high-quality web applications using React.js, Next.js, Redux, and modern JavaScript
practices.
- Mentor and guide junior and mid-level developers through code reviews and technical discussions.
- Work closely with cross-functional teams including backend engineers, designers, and product managers.
- Optimize frontend performance, SEO, accessibility, and responsiveness.
- Maintain a reusable component library with adherence to design systems and frontend best practices.
- Define and enforce coding standards and development workflows.
- Stay updated with the latest frontend trends and bring innovation to the team.
Required Skills & Qualifications:
- 4+ years of experience in frontend development with React.js (including at least 1 year in a lead or
mentoring role)
- Strong command of JavaScript (ES6+), HTML5, CSS3, and TypeScript.
- Hands-on experience with Redux, Next.js, RESTful APIs, and component-driven development
- Proficient with UI frameworks like Tailwind CSS, Material-UI, or Bootstrap
- Familiar with testing tools like Jest, React Testing Library
- Exposure to backend fundamentals or APIs (Node.js, Java, Python - a plus)
- Excellent communication and leadership skills with the ability to manage deadlines and priorities
Nice to Have :
- Experience with other frontend frameworks like Vue.js or Angular
- Understanding of CI/CD pipelines and DevOps tools
- Experience working in Agile/Scrum environments
React.js, Java Script, Redux, React,React.js,Angular,Frontend Developer, UI Developer, Full Stack Developer
Responsibilities :
Build awesome web experiences using React.js
Plan and accommodate all mediums, screen sizes and device types
Build in flexibility and customization from the start
Internalize the user and promote good usability and accessibility in every experience
Be nimble and react quickly to changing business conditions
Work with product managers, content producers, QA engineers and release engineers to own your solution from development to production
Qualifications :
5+ years building web and/or mobile experiences with evidence of exceptional ability
Bachelor’s Degree in Computer Science or related field, or equivalent experience or other evidence of exceptional ability
Solid understanding of fundamental web technologies such as HTTP, REST, AJAX and JSON.
Strong proficiency in JavaScript / ES6, including DOM manipulation and the JavaScript object model
Thorough understanding of React.js and its core principles
Unit Testing with Jest/Enzyme
Experience with Redux
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
Experience working with RESTful APIs
Experience with Nodejs, Expressjs or NextJs
Excellent mastery of web standards, cross-browser compatibility, accessibility and SEO.
Strong CSS skills w/ experience building responsive applications across a variety of browsers and devices using modern CSS3 techniques
Ability to identify tasks which require automation and automate them
Expert knowledge of maintaining and debugging live software systems
Prior experience with Symfony MVC frameworks desirable.
Responsibilities
1. Building offline ready progressive web applications using React and associated libraries
2. Integrating Rest APIs (or GraphQL Queries) for various web and mobile application
3. Building native mobile applications using React, Expo, and other associated react-native technologies
4. Developing reusable components and libraries to be used across multiple projects and depending on the reusability, customizability, and code quality, these libraries could also be open-sourced.
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.
What will you do? 🤔
- Lead frontend team and work with Engineering Team to design beautiful products and thoughtful interactions that make the experience of working with data seamless!
- Help us design and optimize the performance of our products.
- Some of our users work with large data sets and have complex workflows that they manage with Atlan. You will be expected to prioritize user experience while building for scale.
- Design and develop products for diverse personas—data analysts in a large FMCG company, a data scientist working with a large fintech organization or a business user in a product startup.
- Collaborate across teams to achieve company-wide engineering goals and contribute to building a great engineering culture.
What makes you a match for us? 😍
- You have experience building a product from scratch or being in the initial frontend team of any startup.
- You have worked on building and debugging complex systems in both individual and team environments.
- You have a knack for picking the right set of tools for the job at hand.
- You are an expert in http://vue.js/">Vue.js or http://nuxt.js/">Nuxt.js and have a desire to deepen your knowledge in current technologies as well as learn new ones.
- You have a strong sense of customer empathy and desire to influence product direction.
- You have lead a team of frontend engineers previously.
- You love crafting beautiful UI & solid UX/DX to solve the users’ problem. You have a knack to go one step further to delight the user.
- You understand the big data landscape and empathize with the problems of data teams.
- You have previously worked in a startup environment, preferably with a SaaS product.
- You love open-source as much we do! Bonus points if you are an active contributor to the community (speak at conferences and meetups).
About us
CasaOne - CasaOne is a home furniture rental company that helps property managers, realtors, stagers and residents experience and access furniture, furnishings, decor, and equipment on demand. Our full-service offering includes a wide selection of products, affordable monthly rental plans, 3D visualizations, rent-to-own options and white-glove service in as early as 2-3 business days. www.casaone.com
BureauOne - BureauOne converts furniture into a utility for businesses. BureauOne is a furniture rental company that helps businesses experience and access furniture, fixtures, and equipment without going through the myriad challenges that are associated with buying office furniture. BureauOne offers a full-service product including white-glove storage, delivery, and installation on-site. www.bureauone.com.
We are backed by Accel Partners & other prominent investors and have offices in the SF Bay Area (HQ), LA, DC, NY, NJ,Chicago, Philadelphia, San Diego, Connecticut & Bangalore.
Our teams consist of high performing individuals who enable each other to bring their best to every concept, resulting in brands renowned in their markets for perfect insight, impeccable service & the constant ability to surprise with excellence. We onboard experts who inspire us in the way they design solutions, craft brands or simply add sense to our products & services.
We believe technology is only a tool for great engineering minds. Your understanding of core principles is of greater value to us than the tools used.
At CasaOne and BureauOne you will have an opportunity:
• to increase your rate of learning exponentially by defining hard problems and solving them
• to partake in a high-growth journey and increase revenues 5x+ Y-o-Y
• to be an early innovator in the shifting trend: ‘ownership economy’ -> ‘access economy’
• to build a category-defining platform for FF&E (Furniture, Fixture, and Equipment) leasing
• to build high-performance teams.
What you will work on
Your primary focus will be to implement a complete user interface in the form of a responsive web app, with a focus on performance. Your main duties will include creating modules and components and coupling them together into a functional app. A thorough understanding of all the components of our platform and infrastructure is required as you will be working closely with the back-end team to decide REST contracts.
Requirements and Qualification
• 4-7 years of experience.
• Bachelor’s degree in engineering
• Assess the technical feasibility of UI/UX designs
• Develop new user-facing features
• Build reusable code and libraries for future use
• Optimize application for maximum speed and scalability
• Assure that all edge cases are handled
• Collaborate with other team members and stakeholder
• Good understanding of responsive web development
• Proficient understanding of cross-browser compatibility issues and ways to work around them
• Basic understanding of SEO
Good to know
CasaOne Frontend services are written in ReactJS. Experience in ReactJS is good to have, not a must. We believe technology is only a tool for great engineers. We value your understanding of core principles more than the tools used.
What happens next
You read this, you say ‘ah, that’s me, that’s what I would love to do in the near future!. Submit your resume and someone from our team will reach out to you.
CasaOne is an equal opportunity employer (EEO) & we value diversity in our teams.
Web Designer Responsibilities:
Conceptualizing creative ideas with clients. Testing and improving the design of the website. Establishing design guidelines, standards, and best practices. Maintaining the appearance of websites by enforcing content standards. Designing visual imagery for websites and ensuring that they are in line with branding for clients. Working with different content management systems. Communicating design ideas using user flows, process flows, site maps and wireframes. Incorporating functionalities and features into websites. Designing sample pages including colors and fonts. Preparing design plans and presenting the website structure.
Web Designer Requirements:
A relevant diploma in related field. Proficiency in graphic design software including Adobe Photoshop, Adobe Illustrator, and other visual design tools. Proficiency in front-end development web programming languages such as PHP, HTML and CSS, JQuery, and JavaScript,MYSQL. Good understanding of content management systems. Good understanding of search engine optimization principles. Proficient understanding of cross-browser compatibility issues. Excellent visual design skills. Up-to-date experience with international web protocols, standards, and technologies. Creative and open to new ideas. Adaptable and willing to learn new techniques. Excellent communication skills.
MUST Have
- 4-6 years of experience in application software development ( UI stack development )
- Sound knowledge of computer science fundamentals
- Proven ability to design and implement a complex (scalable and distributed ) application software on linux platform
- Hands on any of the language reactjs, Javascript
- Expert in software processes and tools ( Agile, CI/CD, Git, Jenkins )
Good to Have
- Experience in application migration to cloud











