Lead Front-End Developer at Leena AI · Remote only · 4 - 12 years · ₹30L - ₹60L / yr · Raised funding · Remote only · Posted 28 Oct 2021

Leena AI has been founded by IIT Delhi alumnus and senior industry veterans with the mantra to "Improve Employee Experience through Intelligent Conversations”.
Leena AI provides an end to end Chatbot to better the employee/candidate experience & product longevity using our capabilities in HR Chatbot. This solution ensures a reduction in query handling time for HR & improves the employee experience. Apart from this we also have out of the box modules which take care of real-time status updates for employee queries about Workday, improve employee on-boarding and exit process along with simplifying employee-manager's self-service process in the organization. We enable out of the box integration with Workday, Microsoft AD, Kronos and SharePoint for providing a superior experience to employees over the Chatbot.
At Leena AI, We are looking for a passionate Lead Front-End Developer who is proficient with React.js. You will be involved from conception to completion with projects that are technologically sound and aesthetically impressive. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality products are important.
Responsibilities:
As a Lead Front-End Developer you would be responsible for:
- Leading a team, Collaborate with team to deploy and continuously improve our solutions
- Developing new user-facing features using React.js.
- Building reusable components and front-end libraries for future use.
- Translating designs and wireframes into high quality and pixel perfect code.
- Optimising components for maximum performance across a vast array of web-capable devices and browsers.
- And everything that a coder does.
- Strong proficiency in JavaScript, including DOM manipulation and theJavaScript object model.
- Thorough understanding of React.js and Redux its core principles.
- Familiarity with newer specifications of ECMA Script is a plus.
- Familiarity with RESTful APIs.Knowledge of modern authorisation mechanisms, such as JSON Web Token.
- Familiarity with modern front-end build pipelines and tools.
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
- Ability to understand business requirements and translate them into technical requirements.
- Lead a product (would be a plus)
- Have managed a team before

About Leena AI
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Position Title : Frontend / Chrome Extension Developer (React + TypeScript)
Experience : 3+ years
Location : Remote
Job Role Summary :
Build and ship production-ready Chrome extensions that inject UI into existing web apps. Own content scripts, DOM integration, performance, and accessibility (WCAG 2.1 AA).
Mandatory Skills :
React, TypeScript, Chrome Extensions (MV3), Content Scripts, DOM Injection, MutationObserver, TailwindCSS/CSS Modules, Accessibility (WCAG 2.1 AA).
Key Responsibilities :
- Develop Chrome extensions using React + TypeScript.
- Inject and manage UI components within third-party web app DOMs.
- Write and maintain content scripts; handle dynamic pages via MutationObserver.
- Implement clean, responsive styling with TailwindCSS or CSS Modules.
- Ensure accessibility (WCAG 2.1 AA), keyboard navigation, and ARIA semantics.
- Integrate with APIs, manage extension permissions, storage, and messaging.
- Optimize performance, handle edge cases across sites, and write basic tests.
Required Skills :
- Strong React + TypeScript in production.
- Chrome Extension architecture: manifest v3, content/background scripts, messaging, permissions.
- DOM manipulation and safe UI injection strategies.
- MutationObserver, event delegation, handling SPA route changes.
- TailwindCSS or CSS Modules; solid CSS fundamentals.
- Accessibility (WCAG 2.1 AA) and cross-browser compatibility (Chromium/Firefox optional).
- Familiarity with build tooling (Vite/Webpack), linting, and Git.
Nice-to-Have :
- Experience with service workers, storage (sync/local), and i18n.
- Testing with Jest/RTL/Playwright.
- Security basics for extensions (CSP, sandboxing).
Job description
We are seeking an experienced Frontend Developer to join our team, responsible for building fast, scalable, and maintainable web applications. The ideal candidate will have a strong proficiency in HTML, CSS, JavaScript,Flutter and relevant frameworks, with a passion for creating intuitive and engaging user interfaces.
Key Responsibilities:
- Design and develop responsive, mobile-first UI components and features
- Write clean, modular, and reusable code
- Collaborate with backend developers and designers to integrate APIs and design assets
- Implement accessibility and web performance optimization techniques
- Troubleshoot and debug frontend issues
- Stay up-to-date with industry trends and emerging technologies
- Participate in code reviews and contribute to the improvement of the codebase
Requirements:
- 3+ years of experience in frontend development
- Strong proficiency in HTML, CSS, JavaScript, and relevant frameworks (e.g., React, Angular, Flutter)
- Experience with build tools like Webpack, Gulp, or Grunt
- Knowledge of version control systems like Git
- Excellent problem-solving skills and attention to detail
- Strong communication and collaboration skills
Nice to Have:
- Experience with modern frontend build tools and workflows
- Familiarity with backend technologies and APIs
- Knowledge of web performance optimization techniques
- Experience with accessibility guidelines and best practices
Profile: React.js
Location: Andheri East, Mumbai
Experience Required: 3+ Years
Employment Type: Full-time
Required Skills & Qualifications
- Experience: Minimum 3+ years of professional experience in React.js development
- Core Technologies:Strong proficiency in JavaScript (ES6+)
- Extensive experience with React.js and its ecosystem
- Solid understanding of HTML5, CSS3, and responsive design
- Experience with state management libraries (Redux, Context API)
- Knowledge of modern build tools (Webpack, Vite, etc.)
- Familiarity with version control systems (Git)
- Technical Skills:Understanding of RESTful API integration
- Experience with testing frameworks (Jest, React Testing Library)
- Knowledge of modern CSS frameworks (Bootstrap, Material-UI, Tailwind CSS)
- Familiarity with TypeScript is a plus
- Understanding of performance optimization techniques
What We’re Looking for in You:
1. Qualifications: Bachelor’s Degree in Computer Science, Information Technology, or a related field
2. Certifications: NA
3. The Experience That Sets You Apart:
● Lead the development of responsive, pixel-perfect web interfaces using HTML, CSS, and JavaScript.
● Set and maintain frontend coding standards, structure, and best practices
● Collaborate with designers to bring UI/UX concepts to life with clean, maintainable code. ● Optimize web pages for performance, SEO, and cross-browser/device compatibility.
● Guide and mentor junior developers through code reviews and technical support.
● Own project timelines, quality assurance, and delivery for all frontend initiatives
4. Your Subject Matter Expertise:
● Team leadership — 2+ years leading 10+ member teams
● Strong communicator — aligns tech and non-tech teams
● Detail-driven — ensures UI and code precision
● Collaborative — fosters teamwork and mentorship
● Organized — manages time and parallel tasks efficiently
● Service-based mindset — experience in ~200-employee setups
● Composed under pressure — delivers in fast-paced environments
● Solution-focused — navigates challenges with clarity
• Research, design and build highly reliable, available, and scalable solutions that can
handle Millions of API calls across systems.
• Own large technical deliverables and execute in a structured manner, complete
ownership of functional Services that your team is responsible for.
• Take the accountability of the overall health of the products you build and
predictability of the deliverables of your team.
• Lead by example, mentor and guide team members on everything from structured
problem solving to development of best practices
• Platformize components as libraries, utilities and servicify and promote reuse.
• Be able to conceptualize and develop prototypes quickly
• Drive the technical roadmap of the team in collaboration with Product and Business
Teams.
Requirments:
• BTech, MTech in Computer Science or a related technical discipline (or equivalent).
Or high technical acumen and rich technical experience
• Good understanding of how the web works and Strong proficiency with HTML,CSS,
JavaScript
• Hands on experience with ReactJS
• Experience with Typescript, NextJS will be a plus.
• Strong experience on with the react ecosystem for eg, redux, react-query, reactrouter etc.
• Experience with NextJS will be a plus.
• Knowledge on deployment and hosting react apps & server side rendering will be a
plus.
Responsibilities:
- Responsible for development of new highly-responsive, web-based user interface
- Work and collaborate in a scrum structure
- Develop components and libraries that are reusable and future-proof
- Develop a flexible and well-structured APIs to support the system
Required Skills:
- Excellent understanding of Javascript including the OOP concept and how DOM work
- Thorough understanding of React.js and its core principles
- Prior experience with popular React.js workflows (such as Flux or Redux)
- Prior experience with data structure libraries (e.g., Immutable.js)
- Familiarity with RESTful APIs
- Familiarity with HTML / CSS
- GIT experience
- Knowledge of modern authorization mechanisms, such as JSON Web Token
- Familiarity with modern front-end build pipelines and tools
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
- Should be comfortable working in our Bangalore office from Day 1.
- Should possess good communication skills.
About Eastvantage:
At Eastvantage, our mission is to create meaningful jobs and provide careers that are knowledge-based, inspiring, and always with the potential for development and growth.
We are an independently-owned Global business solutions company enabling offshore operations from our locations in the Philippines, India, Bulgaria, Vietnam and Belgium. With European roots, we provide our services to global companies that have offices in every populated continent in the world. We have been in the industry for over a decade, growing from a handful to over 1200 happy employees over the years.
We invite you to navigate through our website to get to know who we are, to see what sets us apart in culture and thinking. Join us and be part of our success story!
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 it to the back-end.
- Collaborate with other team members and stakeholders.
Skills And Qualifications :
- Good understanding of Angular 6+ or React.
- Proficient with JavaScript and jQuery.
- Proficient understanding of web markup, including HTML5, and CSS3.
- Good understanding of server-side CSS pre-processing platforms, such as LESS and SASS.
- Proficient understanding of cross-browser compatibility issues and ways to work around them.
- Proficient understanding of code versioning tools, such as Git and Bitbucket.
- Good understanding of SEO principles and ensuring that application will adhere to them.
- Excellent verbal communication skills.
- Good problem-solving skills.
- Knowledge of software development methodologies like Agile, waterfall, and tools like Jira.
- 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
What is the role?
Xoxoday is looking for a highly skilled/ Experienced Candidates in Frontend Programming & who is comfortable in dealing with Backend tools.
Key Responsibilities
- 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 ReactJS 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.
What are we looking for?
An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of it. We are open to promising candidates who are passionate about their work and are team players.
- 6 to 9 years of strong design and development experience in building massively large-scale distributed internet systems and products.
- Previous experience working as a React.js Developer.
- In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
- Strong experience using a client side MVC framework such as NodeJS, ReactJS, Redux.
- Experience with user interface design.
- Knowledge of performance testing frameworks including Mocha and Jest.
- Experience with browser-based debugging and performance testing software.
- Experience in responsive design, cross browser compatibility and website performance.
- Knowledge of frontend CSS frameworks like Bootstrap, Material UI and preprocessors like SASS and LESS.
- Experience with handling Services, RESTful, APIs (NodeJS preferably).
Whom will you work with?
You will be working with top-quality engineers who have built one of the best employee engagement SaaS platforms. You will be reporting to Engineering Head and working closely with the Architect and other leads.
What can you look for?
A wholesome opportunity in a fast-paced environment will enable you to juggle between concepts yet maintain the quality of content, interact, share your ideas, and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.
We are
A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls, and Compass. Xoxoday works with over 1000 global clients. We help our clients engage and motivate their employees, sales teams, channel partners, or consumers for better business results.
Way forward
We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. However, we assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.









