UI Developer

About Us:

We are a fast-growing startup building AI-powered solutions centered around intelligent agents. Our mission is to deliver seamless, intuitive interfaces that make advanced AI accessible to real users through modern, responsive web applications.

Role: Full Stack Developer Developer

We’re looking for a Full Stack Developer who can design and develop production-ready web applications with excellent frontend user experiences and robust backend systems. You’ll work closely with our AI, product, and design teams to build interactive platforms connecting users with intelligent AI agents.

Responsibilities:

• Develop, test, and maintain end-to-end web applications with modern frontend frameworks and scalable backends.
• Collaborate with AI engineers to integrate agent-driven APIs and real-time data into the UI.
• Design and implement RESTful/GraphQL APIs and efficient database structures.
• Optimize application performance, load times, and user responsiveness.
• Write clean, modular, and reusable code following software design principles.

Requirements:

• THE CANDIDATE MUST BE COMFORTABLE WITH FRONTEND DEVELOPMENT AND HAVE A STRONG UNDERSTANDING OF UI/UX DESIGN PRINCIPLES.
• Strong expertise in Frontend Technologies:React.js,HTML, CSS
• JavaScript,TypeScript, and DOM manipulation.
• State management (Redux, Zustand, Context API,Rest API).
• UI libraries like Material UI, Tailwind CSS, or Bootstrap.
• Proficiency in Node.js and Express.js for backend development.
• Strong understanding of database design (MongoDB, PostgreSQL, or MySQL).
• Knowledge of API design patterns, MVC architecture, and low-level OOP design.
• Hands-on experience with Git/GitHub, version control, and collaborative workflows.
• Awareness of real-time data handling (WebSockets), security, and performance optimization.
• Prior experience building or deploying production-grade web applications through past experience and internships.
• Exposure to AI-powered or multi-agent systems.
• Familiarity with Figma or other design collaboration tools.

What You’ll Gain:

• Hands-on experience building real-world AI-integrated full-stack applications.
• Opportunity to work on frontend architecture, design systems, and API integrations.
• Mentorship from experienced full-stack and AI engineers.
• Pathway for conversion to a full-time position based on performance.

Overview

Adesso India specialises in optimization of core business processes for organizations. Our focus is on providing state-of-the-art solutions that streamline operations and elevate productivity to new heights.

Comprised of a team of industry experts and experienced technology professionals, we ensure that our software development and implementations are reliable, robust, and seamlessly integrated with the latest technologies. By leveraging our extensive knowledge and skills, we empower businesses to achieve their objectives efficiently and effectively.

Job Description

We are seeking skilled Senior Frontend Developer with expertise in the PHP/Symfony im CMS/DXP/E-Commerce environment to join our dynamic team. As a Senior Frontend Developer, you will be responsible for developing and maintaining Web Portals and Shop Projekts for our Domain Name applications. You will collaborate with cross-functional and agile teams to design, develop, and deploy high-quality software solutions.

Responsibilities:

Develop and maintain frontend components for web applications using:

Symfony (must have)

Drupal (nice to have)

Ibexa (nice to have)

Shopware (nice to have)

Work closely with backend developers to ensure seamless integration and data flow.

Optimize frontend performance to ensure fast loading and smooth user interactions.

Implement best practices for web accessibility (WCAG) and cross-browser compatibility.

Ensure responsive design and mobile-first principles are consistently applied.

Maintain high-quality coding standards, documentation, and unit testing. 

Requirements:

Proven experience as a Frontend Developer with expertise in Symfony (must have).

and/or Symfony based CMS/DXP or Shop systems (nice to have).

Strong proficiency in HTML5, CSS3, jQuery and JavaScript(must have).

Experience with Vue.js, React, Nuxt.js (nice to have).

Frontend-API, , Frontend-Testing-Frameworks (nice to have).

Experience with PHP templating and frontend integration within PHP-based systems.

Twig-Templating, Tailwind or Bootstrap (must have).

Familiarity with frontend build tools (e.g., Webpack, Babel, npm/Yarn) (nice to have).

Experience in UI/UX best practices and component-based design (must have).

Excellent understanding of responsive design, mobile-first principles, and frontend performance optimization (must have).

Strong collaboration skills to work effectively in cross-functional teams (must have).

Skills & Requirements

Symfony, Drupal, Ibexa, Shopware, HTML5, CSS3, jQuery, JavaScript, Vue.js, React, Nuxt.js, Frontend-API, Frontend-Testing-Frameworks, PHP templating, Twig-Templating, Tailwind, Bootstrap, Webpack, Babel, npm, Yarn, UI/UX, Component-based design, Responsive design, Mobile-first principles, Frontend performance optimization, Cross-functional collaboration.

Roles and Responsibilities

• Plan, architect, integrate, and develop back-end and database driven features using the Python language and frameworks (Django, Flask, Tornado)

• Experience on Micro service architecture

• Strong knowledge on Web services/API

• Strong Knowledge on AWS/Azure, Docker, etc..

• Having great knowledge on software development methodologies, languages, technologies, security threats, etc.

• Create decoupled, interactive web UIs using JavaScript (Angular, Ember, jQuery, React Js)

• Provide technical advise and recommendations for language and software choices

• Develop code that is cross-browser and cross-platform friendly

• Collaborate with project stakeholders to ensure all requirements are met

• Evaluate technologies and manage technical planning

• Support and ongoing development for existing projects

• Provide clean code and proper documentation for each project

• Assists in resolving moderately complex production support problems

• Strong writing and speaking skills (English)

Technical Requirements:

• At least 4+ years experience developing and deploying websites and applications

• Experience with Django

• Experience with Agile/SCRUM practices

• Hands on experience on database like PostgreSQL,MySQL, Mongo db, etc.

• Custom web based application development experience

• Comfortable collaborating with designers, front-end developers and other team members

• Object-oriented design and development strategies

1.       Strong knowledge in Front end scripting like EJS, JavaScript, Jquery

2.       Proficiency with fundamental front-end languages such as HTML, CSS.

3.       Familiarity with JavaScript frameworks such as Angular JS, React, and Amber.

4.       Proficiency with server-side languages such as Python / Ruby / Java / PHP/ .Net

5.       Good Understand with database technology such as MySQL, Oracle, and MongoDB.

• Bachelor’s degree in Computer Science, Information Technology, or a similar field.
• At least 5-10 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, Vuejs, Angular++, Python and latest technology skills.
• 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 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