

**About Company**
SleepyCat is India's First Mattress-In-A-Box brand! We deliver luxury mattresses, at a fraction of the usual cost, straight from our factory to your doorstep in an easy-to-carry package.
In sleepycat we constantly thrive to make our products and customer experience better using technology.
**About Role**
We are currently looking out for a frontend developer who is motivated to learn and work on challenging projects. You should have a product mindset with great technical skills. In sleepycat we promote new and fresh ideas which can directly or indirectly help customer experience and sales. Sleepycat provides to you platform to bring your thoughts into action and implement them.
Technical skills required (expertise in atleast two of these): Javascript, CSS, PHP
**Personal and Domain Growth Initiatives**
1. In SleepyCat we promote career growth. Once you are settled and have completely owned the system you are hired for, you have the freedom to pick some other technologies inside SC. You will be given time to learn and contribute. Right now we have Web Development (PHP/JS), ReactJS and Ruby on Rails. So you have the freedom to utilize 30% of your time on any of these languages if you wish to and remaining 70% on your primary domain.
2. We also promote self-growth. You can utilize 10% of your time to learn any skill you want and we will help you with that. It is not restricted to the tech domain, could be anything from marketing to sales to personality development.
**Interview Process Details**
***Technical Round 1: Development Knowledge Round***
We will test your skills in 3 domains
understanding an existing written code and ability to make changes
coding a logical question to test basic coding skills
ability to think of test cases to write a full proof code
***Technical Round 2: Coding Round***
45 minutes coding round where you will be required to code live sharing your screen. On the spot problem will be given.
**Additional details**
Website: https://sleepycat.in/
Work Culture: 6 days(All Saturday half day)
Office Location: 91Springboard, Kalina, Mumbai
Employee Strength: 40+ Employees
Founded: 2017
Funding: $1.6 Million
Read about Sleepycat and funding on Crunchbase: https://www.crunchbase.com/organization/sleepycat
Learn what employees say about Sleepycat on Glassdoor: https://tinyurl.com/r9oqfkl
Checkout what people say about SleepyCat products on Google: https://tinyurl.com/rco3nqr

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About the Role
We are looking for highly motivated Frontend Web Developers with strong hands-on skills in React.js, Next.js, and Redux. This is a great opportunity for candidates who want to work in a fast-paced startup environment and take ownership of features from Day 0. As part of our tech team, you will be responsible for building high-performance, scalable, and user-friendly web applications.
Key Responsibilities
- Develop, test, and deploy modern web applications using React.js, Next.js, and Redux.
- Convert UI/UX designs into pixel-perfect, responsive, and cross-browser compatible interfaces.
- Write clean, reusable, and efficient code with a strong focus on performance optimization.
- Collaborate with backend developers, designers, product managers and all the stakeholders to deliver end-to-end solutions.
- Take ownership of assigned tasks and deliver them with minimal supervision.
- Continuously learn and adopt new technologies and best practices in frontend development.
Required Skills & Qualifications
- Strong proficiency in React.js, Next.js, Redux, JavaScript (ES6+), HTML5, CSS3.
- Good understanding of REST APIs, JSON, and asynchronous request handling.
- Familiarity with Git/GitHub (candidates with active GitHub profiles and deployed projects will be given priority).
- Strong problem-solving skills with an ability to pick up tasks independently.
- Good understanding of frontend build tools, package managers (npm/yarn).
- Solid grasp of component-based architecture and state management.
Preferred Skills
- Prior experience (internship/full-time) in a startup environment.
- Knowledge of TypeScript is a plus.
- Exposure to SSR (Server-Side Rendering) and SEO optimization in Next.js.
- Basic knowledge of CI/CD pipelines and deployment.
- Familiarity with UI libraries like TailwindCSS, Material UI, Shadcn.
Eligibility Criteria
- Experience: 0 – 2 years (Freshers with strong projects are welcome).
- Education: Tier 2 / Tier 3 college graduates preferred.
- GitHub Requirement: Candidates must have solid GitHub profiles with deployed projects. Inactive or blank GitHub accounts will be rejected.
Selection Process
- Sample Task – Real-world frontend problem statement
- Technical Interview (Basic, 30 min) – Core React/JS fundamentals
- Advanced Technical Interview (90 min) – Problem-solving, system design discussions, debugging, machine coding
- HR Round – Final discussion
Why Join Us?
- Work in a high-growth startup environment where your contributions have a direct impact.
- Ownership from Day 0 – take responsibility for building and shipping features.
- Learn and grow with a team of passionate engineers.
- Opportunity to work with modern tech stack and real-world problem-solving.
If you are passionate about frontend development and want to build high-quality products from scratch, apply now!

1. Lead the development of frontend architecture and implement scalable, maintainable, and
high-performance web applications.
2. Conduct code reviews and provide constructive feedback to team members to ensure adherence to best
practices and coding standards.
3. Mentor and guide junior frontend developers, fostering a culture of continuous learning and
improvement.
4. Stay up-to-date with the latest frontend technologies, frameworks, and industry trends, and integrate new
solutions as appropriate.
5. Coordinate with the project management team to ensure the timely delivery of high-quality frontend
components and features.
6. Contribute to the development of reusable components, tools, and libraries to improve team productivity
and code maintainability.
Qualification profile
- Successfully completed studies or training in computer science, focus on software development desirable or comparable qualification
- In-depth knowledge of web technologies: JAVA, HTML5, CSS, Java/TypeScript, and Vue.js, as well as web services/SOA Hibernate and SQL
- In-depth knowledge of React and/or Angular is also an advantage
- Experience with responsive web design and web content management systems
- Fluent in English
- Knowledge of cloud-native development and operation, e.g. B. Docker and Kubernetes advantageous
What we offer you
- Varied, demanding, and interesting field of activity
- Flexible working hours to reconcile work and private life
- Collegial and highly professional team in a modern, international working environment
- Career opportunities here in India or worldwide


• Technical end-to-end design for stories by collaborating with business analyst/product owner, technical architect and clients
• Implement stories end-to-end, which includes Frontend, Backends for Frontend (BFF), Caching and also service orchestration in some cases) using best engineering practices like test-driven development, SOLID principles and consideration of non-functional requirements like performance, scalability, security or cloud readiness (as applicable) at the story level
• Automates testing at unit, module and integration level as needed using tools relevant for the platform (e.g. Jasmine, Jest, Karma, Webdriver.io etc.)
• Focus on quality by implementing best practices like logging, calling out technical debt, meeting KPIs using code quality tools like SonarQube, ESLint (customize and sync with Sonar), Stylelint/Sasslint and so on.
• Hands-on with automating redundant work, like common component structure, both in terms of scaffolding as well as using the right design patterns / creating abstractions.
• Mentor junior engineers in helping review code, guiding on technical decision making
Key Requirements:
• 4-9 years’ experience
• Hands-on knowledge of HTML5, CSS3, JavaScript
• Hands-on experience working with Object Oriented JavaScript (OOJS), JavaScript - and practical uses in building complex interactive experiences, primarily with ECMAScript 2015+. You should be up-to-date with new specifications (different stages), and also, using transpilers like Babel to use features from all stages
• Good understanding of creational and structural design patterns in JavaScript
• Experience working with Single Page Applications (SPA) with universal rendering capabilities.
• Good understanding of React.js, its core principles - lifecycle methods, virtual DOM etc. and at least 6 – 12 months hands-on experience with the same
• Understanding of one-way data flow and the Flux architecture.
• Understanding of stateful (container) vs stateless (presentational) components and how to break down the application page into components
• Core understanding of how React’s state management works out of the box.
• Understanding of different CSS architectures that go hand-in-hand with React.js application development. Pros and cons of component-level CSS vs global and where to apply each
• Thorough understanding of Webpack bundler (version 2+).
• Good understanding of the Web Components standard.
• Hands-on experience with building Progressive Web Apps (PWAs) on any framework.
• Hands-on experience with Frontend Performance Optimization – especially in a React application with respect to resource loading strategy, CPU/Memory profiling on the browser.
• Hands-on experience with test-driven development using Jest or equivalent. Familiar with snapshot testing, code coverage. Experience working with utilities like Enzyme
• Experience using fluid grids, and building responsive/adaptive websites using Bootstrap etc.
• Understanding of SEO and accessibility and making it part of the development workflow
• Moderate to Strong graphics manipulation/optimization skills using Photoshop is a plus.

Qualification:
BE/ B.Tech/ M.Tech in Electronics/ Computer Science / MCA
Job Description
We are looking for a Front-End Web Developer who is motivated to combine the art of design with the art of programming. Responsibilities will include translation of the UI/UX design wireframes to actual code that will produce visual elements of the application. You will work with the UI/UX designer and bridge the gap between graphical design and technical implementation, taking an active role on both sides and defining how the application looks as well as how it works.
Responsibilities
- Develop new user -facing features
- Build reusable code and libraries for future use
- Ensure the technical feasibility of UI/UX designs
- Optimize application for maximum speed and scalability
- Assure that all user input is validated before submitting to back-end
- 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.
- Bachelor’s degree in computer science, information technology, or a similar field.
- Minimum 2 years 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, Web pack, 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.
About Haber
At HABER, we are solving the challenges of tomorrow, today. We are bringing together the best minds in process, engineering, computing and chemistry to develop solutions to address some of the world’s toughest challenges – water and energy scarcity and sustainability. Over the past few years there has been an explosion in unstructured data across industry driven by affordable sensing technologies and adoption of analytical instrumentation. This sudden increase in data has resulted in industries spending significant amounts of time collecting, organizing and analysing content and very little time driving value with the data. HABER is focused on reversing this trend by helping our customers spend less time collecting and analysing data and more time using HABER’s platform to drive efficiency, identify issues before they happen and uncover hidden potential. Follow us on Twitter @haber_tech or LinkedIn at linkedin.com/company/haber-technologies or visit us at haberwater.com/careers




Leading the UX Engineering team at AQR you will be responsible for:
Leading set of front-end engineers towards building core infrastructure required for UI development across the firm
Working closely with the business in Bangalore and Greenwich, CT, USA on defining new internal and external application interfaces
Developing the technology strategy for UI development for the firm
Building re-usable web libraries and user-facing components that support large, complex web applications at the firm.
Designing and developing data intensive UI applications with great emphasis on data accuracy,reusability, scalability and performance
Institutionalizing UI development process compatible to work with product owners, users, backend engineers and operations.
Demonstrating the benefits of good design and user experience across AQR
Optimizing web applications on client side (browser) and server side (web servers) to maximize speed and scale.
Continually drive improvements in web infrastructure at the firm to be up-to-date with the latest in the industry.
What You’ll Bring
Bachelor’s or master’s degree in Computer Science or related field of engineering
Over 14+ years of working experience in leading teams and delivering software applications
Strong experience using modern browser frameworks like Angular, or React or Vue
In-depth knowledge of JavaScript and other browser technologies including HTML5 and CSS3.
Working experience with various front end libraries and components including Highchart, d3, ag-grid etc.,.
Strong understanding of user experience design and data visualization techniques
Familiarity with the whole web stack, including browser JS engine, HTTP, web servers and optimization
techniques
Outstanding coding, debugging skills and analytical skills


