
As the lead for the frontend development team at Mosaic, you will be the sole owner of the
entire FE development cycle for our consumer facing web products in ReactJS. Also, you will
be responsible for shaping up the entire system for scale and collaborating intensively with the
backend and design teams to create the best consumer experiences. You would also need to
control the mobile app development lifecycle on ReactNative.
Responsibilities
- Overlook development of all user-facing products in React
- Build reusable components and front-end libraries for future use
- Translate designs and wireframes into high quality code
- Optimize components for maximum performance across a vast array of web-capable
devices and browsers
- Focus on code maintainability and performance of application
- Provide technical advice and assists in solving programming problems
- Use Server Side Rendering when applicable
- Enhance SEO, Analytics and overall frontend architecture for better performance
Requirements
- 4+ years of experience building frontend for consumer facing products
- 2+ years on ReactJS for consumer facing products
- 1+ years of Team Lead/Management experience
- Thorough understanding of architecting the frontend system with Server Side Rendering
- Good foundation in design and a knack for designing interactions and elegant interfaces
- Understands app development cycle
- Experience with NodeJS for Server Side Rendering/coordinating with the backend team
for API requirements
- Must come up with caching solutions where required to speed up the website load speed
and improve customer experience

About Mosaic Wellness
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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).
Location: Gurgaon, Pune, Bhopal, Jaipur, Chennai, Bangalore
Work Mode: Hybrid (2 days WFO)
Experience Required: 5+ Years
Notice Period: Immediate Joiners Preferred
Job Overview
We are looking for a skilled and experienced ReactJS Developer to join our growing engineering team at Deqode. The ideal candidate will have a solid foundation in front-end development and a passion for building scalable, user-friendly web applications.
Key Responsibilities
- Develop responsive and modern web applications using ReactJS.
- Collaborate with cross-functional teams including UI/UX, backend, and QA.
- Build reusable components and front-end libraries for future use.
- Optimize applications for maximum speed and scalability.
- Integrate RESTful APIs and manage application state using Redux or Context API.
- Write clean, maintainable, and well-documented code.
- Perform unit testing and participate in code reviews.
Required Skills
- Strong proficiency in ReactJS, JavaScript (ES6+), and TypeScript.
- Deep understanding of React lifecycle methods and hooks.
- Experience with Redux, Context API, or similar state management tools.
- Knowledge of HTML5, CSS3, SASS, and responsive design principles.
- Familiarity with build tools like Webpack, Babel, and version control (Git).
- Experience integrating third-party APIs and libraries.
- Knowledge of Agile/Scrum methodologies.
Must-Have Qualifications
- Bachelor’s degree in Computer Science, Engineering, or related field.
- 5+ years of experience in front-end development.
- Strong problem-solving skills and attention to detail.
- Excellent communication and teamwork abilities.
Prelude
We are BeyondScale, on a mission to build the mobile learning app to help organizations create internal courses for their workforce easily. eLearning is booming and we aim to tap into the under-served non-IT L&D market and make a difference in the livelihoods of millions of people.Required Skills
- 2+ years of RELEVANT EXPERIENCE in ReactJS
- Strong Computer Science fundamentals - data structures and algorithms
- Strong understanding of ReactJS Ecosystem (State management, Component-based design, Hooks, Responsive design)
- Good with CSS (converting UI designs to code)
- Writing clean and maintainable code
- Proficient understanding of APIs and wiring them
- Strong testing, debugging, and problem-solving skills
- Familiar with modern development practices - writing clean code, git versioning, understanding development workflows
BarRaiser is an AI based B2B & B2C SaaS video recorded interview platform helping
companies to reduce their hiring time by getting their candidates interviewed by the top
industry leaders coming from the companies like Amazon, Linkedin, Microsoft, Google etc.
At BarRaiser, we are standardizing the interview process, so companies hire the right talent
and candidates land their dream job. Our expert partners interview the company's potential
hires by leveraging BarRaiser's proprietary platform and sharing a fair, unbiased assessment
of the candidate's skills, aptitude, and knowledge. We've completed 7.5k+ interviews from
the time of inception working with top product companies like Glance, upGrad, Acko and
Cure.fit among others. Our aim is to reach 50k+ interviews per month globally by 2023.
Founded in 2020 by Avinash Saxena (IITD) Ex-founder Roposo & CTO at Zomato, well
known serial entrepreneur and an investor & Prashant Kumar (IITD), experienced Data guy
worked with Fintech startups.
BarRaiser is looking for a Senior Frontend Engineer to join the technology team. A Senior
Frontend Engineer is expected to be an excellent problem solver who has in-depth
understanding of JavaScript and is hands-on with one or more modern frontend stacks like
React, View, Angular, etc. Also, being an early age startup, we welcome people who are
go-getters and take ownership and drive results.
Responsibilities:
● Writing quality code with suitable best practices in place and delivers robust features
● Participating in code reviews with teammates
● getting involved with team mates proactively to manage delivery of features by
planning deployments, development, etc
● Leading by example to document the processes, system details and decision
making
● Engaging yourself in discussions with engineers and product managers to define api
contracts, product behaviours, plan deployment, etc
Requirements:
● An Experienced Engineer - You have at least 3 years of experience building and
shipping challenging and robust frontend products with modern technology stack.
You have in depth understanding of fundamentals of Frontend Development
● Technologically Fearless - You embrace technical challenges and go outside your
comfort zone to solve the problems. You can evaluate new frameworks and evaluate
them to be used with current system
● Pragmatic - you value a balance of short term and long term solutions while building
products and not just go by the books
● Customer Obsessed - you believe in delivering products which are customer
delight and not just technically complex
● Enthusiastic Problem Solver - you love challenging and complex problems, but
believe in simple solutions
● Technology Geek - you take keen interest in latest developments in technology and
are keen to use them to solve problems
● Software Engineering Advocate - you believe in software engineering best
practices and like to implement them on a day to day job.
● Data Driven - you like measuring KPIs of the products you deliver and derive next
course of action
● Mentor - you like mentoring relatively junior peers and bring the best out of them
● Excellent Communicator - you believe in clear and concise written as well as
verbal communication, you are intuitive in keeping stakeholders informed.
Our Success Stories:
- Build fluid, scalable, responsive, and consumer-centric web platforms that target users across a wide array of devices
- Collaborate closely with designers & backend developers and contribute to the full product development life-cycle from design and development to roll out
Take ownership of work and deliver quality results consistently - Own the delivery of multiple features in a fast-paced work environment
- Build optimized and modular components to provide performance-oriented solutions
- Work in a dynamic and collaborative culture ensuring good teamwork and communication with remote team members when needed
Qualifications
- 4+ Years of experience in frontend web development (1+ in ReactJS)
- Strong past experience of building, scaling and maintaining feature-rich customer-facing single-page applications
- Ability to translate designs into UI elements with accuracy and an eye for fluidity and responsiveness; strong grasp of any of CSS / sass / less
- Proven ability to implement key concepts of state management, security, and caching practices in enterprise-level web applications used at scale
- Proficient understanding of compatibility issues across different browsers and web and mobile devices and available ways to work around them
- Familiarity with the react ecosystem and popular libraries in that ecosystem
- Strong grasp over core web development concepts like HTML5, JavaScript, CSS3, general Web 2.0 techniques, and working without modern component libraries
- Experience with designing secure web applications with a strong understanding of common security vulnerabilities and best practices
- Understanding of data structures, algorithms and object-oriented programming
- Strong grasp over concepts of performance, optimization, lighthouse, etc
- Strong handle over Git, following best practices to facilitate collaboration
Skills that will give you an edge
- Hands-on experience with supporting payments and integrating payment gateways
- Experience with progressive web apps, service workers
- Strong grasp over frontend unit and end-to-end testing frameworks








