React Native Developer

Job description

Job Title: Application Developer

Location: Gurugram Haryana India

Employment Type: Full-time (Immediate joiner preferred )

Experience : 2-5 years (In Android and iOS both)

About Aaizel Tech:

Aaizel Tech is a fast-growing technology company focused on building scalable web and mobile applications. We specialize in cross-platform development using React Native, delivering seamless user experiences across Android, iOS, and web.

Driven by innovation and efficiency, we create high-performance digital solutions that solve real-world problems. At Aaizel Tech, we foster a culture of ownership, creativity, and continuous learning, empowering developers to build impactful products.

Role Overview:

We are looking for an experienced App Developer with strong expertise in developing, deploying, and maintaining scalable applications. The candidate should have a proven track record in app development across platforms, hands-on technical proficiency, and the ability to lead and mentor development teams.

Key Responsibilities:

• Lead mobile application development (Android, iOS, and cross-platform).
• Architect, design, and deliver scalable and secure app solutions.
• Collaborate with product, design, and backend teams to deliver seamless apps.
• Write clean, efficient, and reusable code while ensuring code reviews and best practices.
• Integrate third-party APIs, payment gateways and authentication services.
• Manage deployments and app store releases.
• Mentor junior developers and conduct technical training sessions.
• Stay current with latest frameworks, tools, and certifications relevant to app development.

Required Skills, Qualifications and Experience:

● Educational Background: Bachelor’s/Master’s degree in Computer Science, Engineering, or related field.

● Experience: 2-5 years of hands-on mobile application development experience.

● Technical Skills:

• React Native, Native IOS & Andriod, React.js, AngularJS, Cordova, ExpressJS, ExtJS, Ionic, Java/J2EE, JMeter, JavaScript/jQuery, MongoDB/NoSQL DB, MySQL, PHP, PHP Yii, PL/SQL, React, Python, Dell Boomi, VB.NET.

Expertise in platforms/databases:

MySQL, MongoDB, Microsoft SQL, PostgreSQL, Redis, Docker.

Relevant Functional/Domain Expertise:

• API Integration & Authentication.
• Localisation of applications.
• Payment Gateway & SMS Gateway Integration.
• Digital Signature Integration, E-Sign, DigiLocker.
• Offline service capabilities, Single Sign-On (SSO).
• Interoperability and E-Commerce systems.

● Soft Skills:

○ Excellent problem-solving and analytical skills.

○ Strong communication skills with the ability to document and present technical information clearly.

○ Ability to work independently and as part of a multidisciplinary team.

What We Offer:

● Competitive salary aligned with industry standards.

● A collaborative and innovative work environment with access to advanced resources.

● Opportunities for professional growth and skill development.

● Engaging projects that challenge your technical expertise.

Requirements:

• Experience building and deploying high-scale production mobile apps in Flutter.
• Resource should have experience in both Flutter and ios development.
• Translating UI/UX designs into code.
• Firebase.
• Advanced debugging/testing/optimization skills.
• Knowledge of Location Services, Maps, and other common Android/IOS libraries.
• Analyze and maintain existing software applications.
• Design highly scalable, testable code.
• Discover and fix programming bugs.

Responsibilities

1. Cross-Platform Mobile Development

• Build, maintain, and scale production-grade React Native applications for both Android and iOS platforms from a single codebase.
• Translate product requirements and UX designs into clean, modular, and reusable React Native components.
• Develop rich, intuitive user interfaces for AI/ML dashboards, real-time analytics, and consumer-facing applications.
• Own features end-to-end — from technical design through to deployment on Play Store and App Store.

2. Native Integration & Bridging

• Write custom native modules and bridges in Kotlin/Java (Android) or Swift/Objective-C (iOS) to extend React Native's capabilities where required.
• Integrate third-party SDKs, device hardware APIs, and platform-specific features seamlessly into the React Native layer.
• Ensure consistent functionality and behaviour across a wide range of Android and iOS devices and OS versions.

3. Real-Time & Data-Driven UI

• Build real-time UI components that handle live data streams, WebSocket connections, and high-frequency data updates with minimal latency.
• Develop data-intensive views including charts, dashboards, and monitoring interfaces optimised for mobile performance.
• Ensure smooth, responsive user experiences under high-traffic and data-heavy conditions.

4. Performance & Optimization

• Profile, debug, and optimize application performance using tools such as Flipper, Hermes, React DevTools, and platform-native profilers.
• Minimize app bundle size, reduce render cycles, and improve startup time through best-in-class optimization techniques.
• Ensure accessibility compliance and cross-device UI consistency across varying screen sizes and resolutions.

5. Architecture & Code Quality

• Design and implement scalable mobile architectures supporting modularity, testability, and long-term maintainability.
• Implement robust state management using Redux, Zustand, MobX, or React Context depending on application complexity.
• Establish and uphold mobile coding standards, component libraries, and reusable design systems across the team.

6. Collaboration & Delivery

• Partner closely with backend, AI/ML, data engineering, and design teams to integrate APIs, data pipelines, and workflows.
• Actively participate in code reviews, sprint ceremonies, and technical design discussions.
• Support CI/CD pipelines using Fastlane, Bitrise, or equivalent tools for automated builds and releases.
• Contribute to OTA update strategies using CodePush or equivalent.

Required Skills & Qualifications

• Strong hands-on experience building and shipping production React Native applications on both Android and iOS.
• Proficiency in JavaScript and TypeScript — TypeScript strongly preferred.
• Experience with state management libraries — Redux, Zustand, MobX, or Context API.
• Solid understanding of React Native architecture — Bridge, JSI, Hermes engine, and the New Architecture (Fabric/TurboModules) is a plus.
• Experience writing native modules or bridges in either Kotlin/Java or Swift/Objective-C.
• Hands-on experience with REST APIs, GraphQL, and WebSockets in a mobile context.
• Strong understanding of mobile UI/UX principles, responsive design, and platform-specific design guidelines (Material Design & HIG).
• Experience with CI/CD pipelines and app store deployment processes.

Preferred Skills

• Experience building data-intensive or dashboard-heavy mobile applications.
• Familiarity with data visualization libraries such as Victory Native, Recharts, or D3.js for mobile.
• Exposure to AR/VR or graphics-intensive mobile experiences (ARKit, ARCore, React Native Vision Camera).
• Experience with OTA updates via CodePush or similar tools.
• Familiarity with monorepo setups (Nx, Turborepo) for managing shared mobile codebases.
• Understanding of accessibility standards (WCAG) and inclusive design on mobile.
• Exposure to AI/ML integration on mobile — on-device inference, TensorFlow Lite, or CoreML.

Requirement: -

• Managing a team of 3-4 engineers 
• Hands on experience in Web applications and Mobile applications.
• 2+ years of professional experience working with React Native.
• 4+ years of professional software development experience.
• Should have experience in React.js as well
• Experience working with Swift, Objective C, and Java a plus.
• Meaningful experience working on large, complex systems.
• Familiar with Agile development methodology
• Should have strong fundamentals in React Native
• Should be good at Languages React Native, iOS, Android mobile
• Should be well versed with mobile application architecture
• Ensure and apprise stakeholders of technical feasibility, effort, and impact of implementations.
• Interact with clients to understand requirements.
• Able to convert business requirements to sizable tasks for developers to implement.

Technical skills:

1. Working experience in using the any of the design principles MVVM or MVP
2. Experience in using Web Services and SQLite data base
3. Experience in Multithreading  concepts – Rx JAVA
4. Experience in using version control systems like SVN, GIT Hub, Bitbucket etc
5. Experience in using Dependency injection principles in android
6. Experience in using design patterns
7. Experience integration with 3rd party API’s like Facebook, gmail, retrofit, Picasso & 3rd party libraries
8. Experience/Knowledge in using google Flutter

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 Flutter frameworks, 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 Mobile Applications written in Flutter.
● Manage individual priorities, deadlines, and deliverables.
● Validating the functionality and security of the Mobile applications.
● 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.

Requirements: 
● Bachelor/Master degree in CS or related field from a reputed college.
● 2-6 years of experience in frontend software development.
● Sound knowledge of Dart & Flutter.
● 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

• Bachelor’s or Master’s degree in Computer Science or Engineering, 
• 4-8 years of hands-on Experience in React native js  
• Develop Hybrid Apps using React Native and integrate them with back-end services.
• Navigation model in Mobile apps.
• Minimum 3yrs of exp in building React native apps for android and iOS Solid understanding of iOS and Android ecosystems.
• Must have worked on hardware integration with the apps.
• Understanding of various navigation models in mobile apps Good at debugging, testing, performance optimization.
• Interpersonal skills: good team player, ready to take challenges ability to deliver in a fast-paced environment
• Able to build and maintain awesome react native applications with good code quality
• Implement pixel-perfect UI's that match designs.
• Work with native modules when required.
• Have developed at least 1 iOS/Android app which has been deployed in both Appstore and Google Play
• Excellent understanding of solid coding skills in React Native)
• Have a good understanding of REST APIs
• Good Communication