react js 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.

Responsibilities     

• Take product ideas from ideation to implementation.
• Collaborate with Product and Design to create robust and usable features.
• Take ownership of the architecture for best performance and usability.
• Lead engineering discussions to ensure the best practices, maintainability and security of the application.
• Participate in design and code reviews.
• Lead and mentor the team of developers, to drive business objectives.

We are looking for

• 4+ years of experience building quality applications.
• Proficient in client-side JS frameworks such as React.js
• Passion for best design and coding practices and a desire to develop new bold ideas.
• Strong customer focus, ownership, and self-drive.
• Experience in planning, designing architecture and leading teams.

About the Role

We are looking for a highly skilled and experienced Senior React Native Developer to join our team and take the lead on developing our cross-platform mobile application. You’ll play a critical role in building, launching, and scaling a high-performance mobile app that runs seamlessly on both iOS and Android platforms from a single codebase.

If you’re passionate about mobile technologies, have a strong command of React Native, and are excited about creating a high-quality product from the ground up, we’d love to hear from you.

Responsibilities

• Lead the end-to-end development of a cross-platform mobile application using React Native.
• Collaborate with product managers, designers, and backend engineers to deliver high-quality user experiences.
• Build reusable components and front-end libraries for future use.
• Optimize app performance for speed and scalability across devices and OS versions.
• Ensure the app complies with design standards and platform-specific guidelines (Apple App Store & Google Play).
• Set up CI/CD pipelines for automated builds, testing, and deployment (e.g., using Fastlane, EAS, or similar).
• Integrate RESTful APIs and third-party services.
• Handle app store submissions and updates.
• Mentor junior developers and enforce best practices in mobile development.

Requirements

Must-Have:

• 5+ years of experience in mobile application development.
• 3+ years of hands-on experience with React Native.
• Strong understanding of JavaScript (ES6+), TypeScript, and React architecture.
• Deep knowledge of iOS and Android mobile app development lifecycle.
• Experience with mobile UI/UX best practices and performance optimization.
• Familiarity with native build tools (Xcode, Android Studio).
• Experience integrating REST APIs and handling network latency issues.
• Proficient with Git, GitHub/GitLab, and agile development practices.
• Experience with push notifications, in-app purchases, deep linking, and analytics SDKs.

Preferred:

• Experience with Expo or EAS for managed workflows.
• Familiarity with mobile CI/CD pipelines (Fastlane, Bitrise, etc.).
• Experience with native modules (Objective-C/Swift and Java/Kotlin) as needed.
• Knowledge of automated testing frameworks (Jest, Detox).
• Published apps in both the App Store and Google Play.
• Prior experience in startups or high-growth environments.

What We Offer

• Opportunity to lead and build a product from the ground up.
• Work with a dynamic and talented team in a fast-paced environment.
• Flexible working hours and remote-first culture.
• Competitive salary and equity options (if applicable).
• Learning and development budget.

Responsibilities :

Build awesome web experiences using React.js
Plan and accommodate all mediums, screen sizes and device types
Build in flexibility and customization from the start
Internalize the user and promote good usability and accessibility in every experience
Be nimble and react quickly to changing business conditions
Work with product managers, content producers, QA engineers and release engineers to own your solution from development to production

Qualifications :

5+ years building web and/or mobile experiences with evidence of exceptional ability
Bachelor’s Degree in Computer Science or related field, or equivalent experience or other evidence of exceptional ability
Solid understanding of fundamental web technologies such as HTTP, REST, AJAX and JSON.
Strong proficiency in JavaScript / ES6, including DOM manipulation and the JavaScript object model
Thorough understanding of React.js and its core principles
Unit Testing with Jest/Enzyme
Experience with Redux
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
Experience working with RESTful APIs
Experience with Nodejs, Expressjs or NextJs
Excellent mastery of web standards, cross-browser compatibility, accessibility and SEO.
Strong CSS skills w/ experience building responsive applications across a variety of browsers and devices using modern CSS3 techniques
Ability to identify tasks which require automation and automate them
Expert knowledge of maintaining and debugging live software systems
Prior experience with Symfony MVC frameworks desirable.

About Numen (https://numenhealth.com):
Numen Health is a Health-tech company with a goal to reimagine healthcare in India. Through an amalgamation of our healthcare team with the power of AI and the Internet of Things (IoT), we make healthcare easier and accessible through a data-based preemptive approach. Our mission is to facilitate change in the healthcare industry by moving from a reactive approach to a proactive one.
We are a wonderful, young team with experience in scaling up Indian and international businesses from the ground up. We are looking for like-minded and enthusiastic people who are passionate about making a lasting difference and want to help us revolutionize the way healthcare is delivered to a billion Indian!

Our Vision:
To shift the healthcare ecosystem from a ‘Sick-care' approach to a ‘Holistic-healthcare' approach. We aim to do that by enabling doctors and caregivers to move from treating ailments to employing a data-based,
preemptive approach.
About Product:
We offer preventive healthcare programs to individuals to improve their health. These plans are crafted in consultation with their treating doctor and a dedicated care team remotely monitors the progress in real[1]time. For doctors, Numen is a virtual facility to cater to all of their patient’s needs, remotely.
Why Join?
At Numen, you have the opportunity to make tangible changes to the existing healthcare systems in India
making it preventive and affordable. By joining the Numen team, you get to be part of a young, dynamic
team that is passionate about making a change and a fast-paced environment with multiple opportunities to
learn and grow.

Job Overview : 
Software Development Engineers FE will be responsible to participate in all stages of the software product development life cycle. This will include analysing system and user requirements, designing software flowcharts, creating user interfacing applications (Web Or Mobile) , troubleshooting bugs, and running tests to improve system functionality. An ideal
candidate would be someone who has proficiency in React Js, good analytical skills, the ability to anticipate issues and frame remedial actions, and excellent teamwork skills.

Responsibilities:
● Write simple, efficient, and maintainable code.
● Develop, scale and maintain web Applications written in ReactJs.
● Validating the functionality and security of the application.
● Manage individual priorities, deadlines, and deliverables.
● Function well in a fast-paced, rapidly changing environment.
● Ensuring best coding standards and practices to improve and maintain quality.
● Meeting with the engineering and product team to discuss project definitions and goals.

Requrements:
● Bachelor/Master degree in CS or related field from a reputed college.
● 2-6 years of experience in frontend software development.
● Sound knowledge of HTML,CSS, JavaScript and ReactJs.
● Solid grip on the programming basics like DS and algorithms.
● Prior experience in start-ups or health-tech will be a plus.
● Highly effective communication and interpersonal skills
● Strong troubleshooting and debugging skills