React js Developer at Gunpowder Innovations · Remote only · 3 - 5 years · ₹3.6L - ₹9L / yr · Raised funding · Remote only · Posted 22 Aug 2026

Role Description
This is a full-time role for a React.js Developer who will be responsible for developing, maintaining, and optimizing responsive and scalable web applications. The successful candidate will work closely with UI/UX designers, backend developers, and product teams to convert designs and requirements into high-quality, production-ready applications. The role requires strong problem-solving skills, attention to detail, and the ability to take ownership of features from development through deployment.
Key Responsibilities
- Develop responsive and scalable web applications using React.js.
- Build reusable and maintainable frontend components.
- Convert UI/UX designs and Figma prototypes into functional web interfaces.
- Integrate frontend applications with REST APIs and backend services.
- Manage application state using Redux, Context API, Zustand, or similar technologies.
- Optimize applications for performance, responsiveness, and scalability.
- Debug and resolve frontend issues across development and production environments.
- Ensure cross-browser and cross-device compatibility.
- Collaborate with UI/UX designers, backend developers, QA, and product teams.
- Participate in code reviews and follow clean coding and development practices.
- Write and maintain appropriate tests for frontend applications.
- Stay updated with modern frontend technologies and best practices.
- Take ownership of features from development and testing through deployment and maintenance.
Requirements
- Strong proficiency in JavaScript (ES6+) and React.js.
- Good understanding of React Hooks, component architecture, props, state, and Context API.
- Strong knowledge of HTML5 and CSS3 and responsive web development.
- Experience integrating REST APIs and working with JSON.
- Experience with state management libraries such as Redux, Zustand, or similar.
- Experience with Git and GitHub/GitLab.
- Understanding of frontend performance optimization and browser debugging.
- 3+ years of hands-on experience in frontend development with React.js.
- Experience with TypeScript and Next.js is preferred.
- Familiarity with UI libraries such as Tailwind CSS, Material UI, or similar is a plus.
- Experience with frontend testing tools such as Jest, Vitest, or React Testing Library is a plus.
- Good problem-solving and analytical skills.
- Strong communication and collaboration skills.
- Ability to work independently, prioritize tasks, and meet deadlines.
- A proactive approach to learning and solving technical problems.
Candidates with strong practical experience, personal projects, GitHub contributions, or demonstrable frontend work may also be considered in place of extensive professional experience.

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Are you a UI whiz with a knack for crafting beautiful and intuitive interfaces? Do you love the
challenge of building cross-platform apps with cutting-edge technologies? If so, we want you on our
team!
About the Role:
We're seeking a talented and passionate Software Engineer with a deep understanding of
JavaScript, React, and Flutter to join our fast-growing team. You'll play a key role in designing,
developing, and implementing user interfaces for our web and mobile applications. You'll collaborate
closely with designers, product managers, and backend engineers to bring our vision to life and
create exceptional user experiences.
Responsibilities:
- Design and develop user interfaces (UI) using JavaScript, React, and Flutter
- Build reusable, maintainable, and performant UI components
- Implement responsive layouts that adapt seamlessly across different devices (web, mobile)
- Integrate UI components with backend APIs
- Write clean, well-documented, and testable code
- Collaborate with designers to translate design mockups into functional UIs
- Participate in code reviews and knowledge sharing
- Stay up-to-date on the latest UI development trends and technologies
Qualifications:
- 3+ years of experience as a software engineer with a focus on UI development
- Proficiency in JavaScript, including ES6+ features
- In-depth knowledge of React and experience building React applications
- Solid understanding of Flutter and experience building cross-platform mobile apps
- Experience with UI design principles (user experience, accessibility)
- Familiarity with CSS frameworks (e.g., Bootstrap, Material-UI) a plus
- Experience with state management libraries (e.g., Redux, MobX) a plus
- Experience with unit testing frameworks (e.g., Jest) a plus
- Excellent problem-solving and analytical skills
- Strong communication and collaboration skills
- Ability to work independently and as part of a team
Bonus Points:
- Experience with UI animation libraries (e.g., React Spring, Rive)
- Experience with continuous integration/delivery (CI/CD) pipelines
- Experience with accessibility best practices
- Experience with version control systems (e.g., Git)
About Company:
Espressif Systems (688018) is a public multinational, fabless semiconductor company established in 2008, with headquarters in Shanghai and offices in Greater China, India, and Europe. We have a passionate team of engineers and scientists from all over the world, focused on developing cutting-edge Wi-Fi and Bluetooth, low-power IoT solutions. We have created the popular ESP8266 and ESP32 series of chips, modules, and development boards. By leveraging wireless computing, we provide green, versatile, and cost-effective chipsets. We have always been committed to offering IoT solutions that are secure, robust, and power-efficient. By open-sourcing our technology, we aim to enable developers to use Espressif’s technology globally and build smart connected devices. In July 2019, Espressif made its Initial Public Offering on the Sci-Tech Innovation Board (STAR) of the Shanghai Stock Exchange (SSE).
Espressif has a technology centre in Pune. The focus is on embedded software engineering and IoT solutions for our growing customers.
About Role:
https://rainmaker.espressif.com/">ESP RainMaker provides a complete solution to makers to develop connected devices with ease. It also focuses on solving a major challenge about how the quality of connected devices can be improved. It constitutes device-side SDK, mobile apps and a cloud application. This role requires product engineering for the web UI for the RainMaker cloud.
Minimum Qualification:
- BE/B.Tech in Computer Science with 5 to 10 years of experience
- Strong Computer Science Fundamentals
- Excellent understanding of UX and design sensibilities
- Design, develop, and test UI for web applications
- Experience with one or more of these: React, Redux, Webpack, ES6, Async JS Communication, WebSockets
- Strong debugging and troubleshooting skills
Desired Qualification:
- Significant experience with JavaScript, React and Redux.
- Experience in consumption of cloud services and REST interfaces (implementation experience would be added advantage)
- Experience with CSS pre-processors like LESS or SASS
- Expertise with cross-browser, cross-platform, and responsive design
- Solid understanding of user interactions required for Single-Page Applications
- Experience with modern browser technologies
Responsibilities:
- Designing and developing User Interface for web applications
- Write code based in HTML, CSS, JavaScript and ReactJS
- Accurately translate user and business needs into functional, secure and efficient frontend design and code
- Experience and desire to take product/feature ownership from delivery and customer support perspective
- Collaborate with backend and quality engineers to spec, write, test, and deploy code that integrates with data streams and API endpoints
- Utilise responsive design techniques and ensure cross-browser compatibility
- Perform code reviews and improve/ensure the quality of product
What to expect from our interview process
- The first step is to email your resume or apply to the relevant open position, along with a sample of something you have worked on such as a public GitHub repo or side project etc.
- Next, post shortlisting your profile recruiter will get in touch with you via a mechanism that works for you e.g. via email, phone. This will be a short chat to learn more about your background and interests, to share more about the job and Espressif, and to answer any initial questions you have.
- Successful candidates will then be invited for 2 to 3 rounds of the technical interview as per the previous round feedback.
- Finally, Successful candidates will have an interview with HR.
What you offer us
- Ability to provide technical solutions, support that fosters collaboration and innovation.
- Ability to balance a variety of technical needs and priorities according to Espressif’s growing needs.
What we offer
- An open-minded, collaboration culture of enthusiastic technologist.
- Competitive salary
- 100% company paid medical/dental/vision/life coverage
- Frequent training by experienced colleagues and chances to take international trips, attend exhibitions, technical meetups and seminars.
The ideal candidate will have at least 2 years of experience in developing scalable and responsive web
applications, and will be able to work collaboratively with other developers and stakeholders to deliver
high-quality software products.
Responsibilities
● Develop and maintain responsive and scalable web applications using React and JavaScript
● Write clean, efficient, and maintainable code that adheres to coding standards and best practices
● Collaborate with other developers and stakeholders to design and implement software solutions
that meet business requirements
● Work with UX/UI designers to implement user interfaces that are intuitive and visually appealing
● Optimize web applications for maximum speed and scalability
● Participate in code reviews, testing, and debugging to ensure that the software meets quality
standards
● Stay up-to-date with the latest industry trends and technologies, and make recommendations to
the company on how to best incorporate them into its products and services
● Proficient in client & server-side JavaScript, HTML5, CSS3 and webpack
● Competent in building single page web applications using Node.js and React Js
● Redux for state management
● Universal rendering (Client-side rendering and Server-side rendering)
● Experience with cross-browser, cross-platform, and design constraints on the web
● Experience in developing automated unit and functional tests
● Experience in an agile development process
● Solid knowledge of algorithms and design patterns
● Have a passion for quality and writing clean, readable code that scales and performs well
● Good interpersonal communication skills
Desired Candidate Profile
● At least 2 years of experience in developing web applications using React/NextJS/VueJs and
JavaScript
• Partner with Senior Engineers to define the frontend technical approach.
• Develop, test, and maintain tools and solutions to facilitate quick and easy customer onboarding.
• Collaborate with Customer Success and Engineering teams to build best-in-market PaaS solutions.
• Work closely with Customer Success, Sales, and Engineering teams on customising enterprise
environments to meet customer requirements.
• Participate in scrum activities to plan, execute and release software.
• Creative and alternate solution recommendations with growth mindset.
Eligibility:
• Minimum 3 years of experience building frontend applications using ReactJS.
• Strong command over HTML and CSS is a must
• Comfortable with using tools like GitHub.
• Should have CI/CD knowledge using GitHub and Azure App Services.
• Should have considerable exposure to developing and deploying React solutions on Azure.
Good to have:
• UX designing experience with XD or Figma.
Model of employment:
• Hybrid
Location:
• Bangalore
Parameters: React JS, Figma, HTML+CSS, Bootstrap, Azure App Services,
Continuous Integration / Deployment, GitHub
Expertise of UI framework - React/Redux, RXJS
Preferred experience with the new generation of Web Programming - using Micro Service, REST/JSON, Component UI models
Familiarity with code versioning tools such as Git, SVN
Knowledge of performance testing frameworks like JMeter, Mocha and Jest (Preferred)
Excellent troubleshooting skills
Knowledge of Database.
*Preferred candidates from product Companies*
Roles and Responsibilities
- Design and implement components of our web application, and admin panel
- Build a robust, lightweight, and high-performance client-side app
- Translating designs and wireframes into high quality code
- Write documentation and guides for web app & admin panel
Key Qualifications
- Expertise in ReactJS/Redux
- Working knowledge of TypeScript or Flow is a plus
- PURE experience of 1.5 Years and more in Frontend Development
- Expert-level knowledge of developing, shipping, and maintaining Javascript applications
- Knowledge of general software design patterns
- Deep understanding of Javascript
- Up-to-date on the latest build tools, and libraries such as ES6, Webpack, Babel
- Proficient in Javascript with strong object-oriented design skills
- Able to work independently and drive results









