
Senior Frontend Developer
at Sequoia funded D2C startup in Healthcare/wellness space
About
Our client is a platform of digital-first health clinics owned and operated under one house, with each of them working together toward one mission: To help Indians lead a more fulfilling life surrounded by wellness and grace.
The business is creating a family of purposeful health platforms with personalized solutions for a particular problem in a niche segment. Each platform provides the essentials to enable an individual segment of people to lead a graceful life full of purpose and well being.
Role
As the senior member of the frontend development team at Mosaic, you will be responsible for setting best practices and making sure that the others adhere to them. 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.
Responsibilities
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- Develop all user-facing products in React
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- Build reusable components and front-end libraries for future use
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- Translate designs and wireframes into high-quality code
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- Optimize components for maximum performance across a vast array of web-capable
devices and browsers
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- Focus on code maintainability and performance of the application.
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- Provide technical advice and assist in solving programming problems.
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- Enhance SEO, Analytics, and overall frontend architecture for better performance
Requirements
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- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
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- Good foundation in design and a knack for designing interactions and elegant interfaces
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- Thorough understanding of React.js and its core principles
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- Good to have experience with popular React.js workflows (such as Flux or Redux)
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- Experience with data structure libraries
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- Familiarity with RESTful APIs
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- Familiarity with modern front-end build pipelines and tools
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- A knack for benchmarking and optimization
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- Familiarity with code versioning tools (such as Git)
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- Proficient in industry standard best practices such as Design Patterns, Coding Standards,
Coding modularity, Prototypes etc.
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- Experience in using debugging tools used for profiling/optimizing performance
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- Experience in debugging, tuning and optimizing UI components
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- Bachelor’s degree (B.A.) in Computer Science, MIS or related degree and a minimum of
two (2) years of relevant development or engineering experience.

Similar jobs
· 7+ years of professional experience in front-end development.
· 5+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.)
· 3+ Years Exp as Lead
· Strong understanding of JavaScript (ES6+), HTML5, and CSS3.
· Experience with RESTful APIs, GraphQL, and WebSocket integration.
· Proficiency in modern build tools (Webpack, Vite, Babel, etc.).
· Expertise in state management libraries (Redux, MobX) and React Query.
· Solid understanding of UI/UX principles and responsive design.
· Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).
Familiarity with modern CI/CD pipelines and version control tools (Git).

About the role
Our UX is a key differentiator. We invest heavily in UI, aiming for a snappy and intuitive experience. We believe in Product-Led Growth, which holds that even enterprise adoption of software tools begins with individual users. The key to achieving this is creating a user experience that prompts customers to respond quickly. We are investing in amazing UX at every touchpoint: website, help docs, dev docs, community, contacting support, asking sales for a demo, etc. This work is high-impact as it affects not only the immediate business goals of driving sign-ups but will have a long-lasting impact on our brand.
About the role
Our UX is a key differentiator. We invest heavily in UI, aiming for a snappy and intuitive experience. We believe in Product-Led Growth, which holds that even enterprise adoption of software tools begins with individual users. The key to achieving this is creating a user experience that prompts customers to respond quickly. We are investing in amazing UX at every touchpoint: website, help docs, dev docs, community, contacting support, asking sales for a demo, etc. This work is high-impact as it affects not only the immediate business goals of driving sign-ups but will have a long-lasting impact on our brand.
What it means to be an early engineer
Being part of the founding team, you will have the opportunity to shape the future of sustainable energy. Together, we’re going to face the hardest technical challenges this journey has to offer head-on. As the team grows, you’ll be the battle-hardened expert that everyone looks to for guidance. Your role will be pivotal in building a mission-critical analytics platform that encompasses predictive ML models, real-time analytics, and user-friendly dashboards.
As a Frontend Engineer, here’s what you’ll be doing
- Develop our web applications using React, Redux, Next.js, HTML, CSS
- Build scalable and interactive data visualization components for complex analytics
- Integrate external tools for product analytics
- Create and execute test plans and test cases ensuring high-quality user experiences
- Quickly develop proof of concepts (POCs) for new features or product ideas
- Regularly update and maintain website content and assets
We are excited about you because you have:
- Proven 4+ years of experience as a Frontend Developer with a strong portfolio of web applications developed using React, Next.js, and other similar technologies
- Strong understanding of HTML and various CSS Frameworks
- Familiarity with integrating advanced charting libraries, maps, calendars, and other third-party components into web applications
- Proven expertise in handling browser components DOM, Cookie, Session etc
- Proficiency in frontend testing methodologies for flawless user experience and optimizing web application performance
- Good understanding of website management and maintenance, SEO, CMS, etc.
You’ll be a great fit if:
- You have 4+ experience in building frontend applications
- Previously worked in a startup environment and have a high degree of ownership and appetite for ambiguity
- Like being a part of a high-performing team focussed on fast-paced execution at the same time detail-oriented
- A relentless desire to solve customer problems and chase down answers
Why choose Our Client?
We're the leader in battery analytics and are backed by prominent investors like YC. Today, we're the only company single-mindedly focused on enabling the world's transition to electric vehicles. We are among the most innovative companies that use data to uncover insights about electric vehicles and batteries. More importantly, you will have the opportunity to implement your tech skills to solve real-world issues like climate change. Let's do something great together.
Why choose Our Client?
• Responsibilities:-
1.Developing new user-facing features using React.js
2.Building reusable components and front-end libraries for future use
3.Translating designs and wireframes into high quality code
4.Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Skills:-
1. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
2. Thorough understanding of React.js and its core principles
3. Experience with popular React.js workflows (such as Flux or Redux)
4. Familiarity with newer specifications of ECMAScript
5. Experience with data structure libraries (e.g., Immutable.js)
6. Familiarity with RESTful APIs
7. Knowledge of modern authorization mechanisms, such as JSON Web Token
8. Familiarity with modern front-end build pipelines and tools
9. Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
10. Ability to understand business requirements and translate them into technical requirements
11. A knack for benchmarking and optimization
12. Familiarity with code versioning tools such as Git
- Bachelor’s degree in Computer Science, Information Technology, or a similar field.
- Previous experience working as a React.js Developer.
- In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
- Experience of REACT tools including React.js, Webpack, 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.
We are looking for a React JS/React-Native developer interested in building performant and pixel-perfect web applications. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.
Responsibilities
- Build pixel-perfect, buttery smooth UIs across both web and mobile platforms.
- Diagnose and fix bugs and performance bottlenecks for performance that feels native.
- Reach out to the open-source community to encourage and help implement mission-critical software fixes—ReactJS moves fast and often breaks things.
- Maintain code and write automated tests to ensure the product is of the highest quality.
- Build and deliver features end to end. (frontend and backend)
Skills
- Firm grasp of the JavaScript and TypeScript language and its nuances, including ES6+ syntax
- Knowledge of functional or object-oriented programming
- Ability to write well-documented, clean Javascript code
- Rock solid at working with third-party dependencies and debugging dependency conflicts
- Understanding of Firebase cloud functions, firestore and offline storage
- Experience with automated testing suites, like (Jest or Mocha)
About the Company
Established in the year 1953, Our Client is one of the leading TMT bar manufacturer and exporter in India. It is a well known group that achieves a turn over of 3000 Cr per annum. The group is setting a construction & architecture oriented omni channel B2B & B2C platform
Job Description
Experience : 2-3Years
Requirement
- 2 years of experience in frontend development primarily using React .JS
- Knowledge and experience in JavaScript and ReactJS ,HTML,CSS3
- Thorough understanding of NodeJs & React.js(SSR) and its core principles
- Familiarity with RESTful APIs
- Familiarity with modern front-end build pipelines and tools
- Good experience and thorough understanding of React.js and its core principles
- Good experience in UI design and development
- Knowledge of functional and object-oriented programming
- Ability to write well-documented, clean Javascript code
- Ability to understand business requirements and translate them into technical requirement
Regards
Team Merito
In this role, you will be responsible for developing and integrating UI
components using React.js, hooks, typescript, ES6 and redux.
Should be good in unit testing library like react testing library/enzyme and jest
Should have in-depth knowledge of JavaScript and OOPs concepts, excellent front-end
coding skills, and a good understanding of the integration of REST services.
Experience/Knowledge with node.js, express.js, mongodb and mongoose will be an added advantage.
Preferably with 3 to 5 year
- Have 3 - 6 years of experience working in a high speed Product B2B start up doing Full-stack or ReactJS software development
- Have demonstrated experience in Front-end developer tooling, React js and its core principles
- Have experience with popular React js workflows (such as Hooks and Redux), React Material UI,Data structure libraries (e.g., Immutable js)and with RESTful APIs
- Have experience in debugging, problem-solving, and improving application performance.
- Are willing to learning new technologies on your own.
- Have knowledge in best practices for the whole software development cycle (TDD/CI/CD) and agile methodologies.
- Have good knowledge of version control.
- Have the ability to use a wide variety of open source technologies and tools.
- Have good communication ability and can articulate business needs and translate them into technology solutions.







