Mobile Developer

About Kadellabs:

Kadel Labs is a deep-tech IT services company dedicated to transforming businesses with cutting-edge solutions. Our expertise spans Data Analytics, Engineering, and Visualization; Cloud services including DevOps, InfoSecOps, and InfraOps; Software development and modernization; and Generative AI-driven business applications. As a trusted partner of Data Bricks, Azure, AWS, Web Methods, and Bitrix24 CRM, we empower businesses with innovative, reliable, and scalable technology solutions

Job Title: Mobile Developer

Experience: 4-5 Years
Location: Bangalore

About the Role

We are looking for a Mobile Developer with 3–5 years of experience in React Native to join our engineering team. You will own the development, maintenance, and enhancement of our cross-platform mobile application used across 30+ client organizations.  

The app operates in demanding field environments — offline mode, low connectivity, GPS tracking, image capture, bulk data sync, and real-time call integration. You will work closely with backend engineers and product managers to deliver features that directly impact field collections performance.  

Key Responsibilities

· Build and maintain cross-platform mobile features in React Native (iOS + Android) aligned with backend APIs.  

· Implement offline-first data sync mechanisms for field use cases where connectivity is unreliable.  

· Integrate with REST APIs (Spring Boot 3.x backend) including JWT/OAuth2 authentication flows via Keycloak.  

· Implement Firebase Cloud Messaging (FCM) for push notifications — activity alerts, call assignments, settlement approvals.  

· Work with device capabilities: GPS location tracking, camera (photo/document capture), file system (bulk upload).  

· Build call center integrations: click-to-call flows, call status tracking.  

· Maintain per-client build configurations — 30+ org-specific auth configs, themes, and feature flags.  

· Write clean, testable component code; participate in code reviews and maintain quality standards.  

· Optimise app performance: memory, bundle size, startup time, list rendering for large datasets.  

· Collaborate with backend and product teams in an agile delivery environment.  

Must Have Skills

Core Mobile:  

· React Native 0.7x — strong proficiency; functional components, hooks, navigation  

· React Navigation — stack, tab, drawer navigators; deep linking  

· State management — Redux / Redux Toolkit or MobX  

· REST API integration — Axios, token refresh, error handling, retry logic  

· Offline support — AsyncStorage, SQLite (react-native-sqlite-storage or WatermelonDB), sync strategies  

· Push notifications — Firebase Cloud Messaging (FCM) integration on Android + iOS  

· Device APIs — Geolocation, Camera (react-native-camera / vision-camera), permissions management  

· Platform-specific configuration — Android Gradle, iOS Xcode / CocoaPods, signing  

Authentication:  

· OAuth2 / OIDC — token handling, refresh flows, secure storage (Keychain / Keystore) 

· Keycloak or similar identity provider integration (preferred) 

General:  

· Git — branching, PR-based workflow  

· Understanding of REST API design; ability to read backend API contracts  

· Basic debugging with Flipper / Metro / logcat / Xcode console  

· Familiarity with CI/CD for mobile: Fastlane, GitHub Actions, or similar  

Prefered / Nice to have

· Experience building apps for FinTech, NBFC, or field-force use cases 

· Click-to-call / VoIP integration (SlashRTC, Ozonetel, Exotel, or similar) - WebSocket integration for real-time agent status and live call notifications 

· AWS S3 presigned URL upload from mobile (documents, images) - Short URL / QR code generation and scanning 

· Multi-tenant white-labelling: per-client themes, icons, API base URLs, feature toggles 

· Performance profiling: Hermes JS engine, RAM bundles, Flashlist vs FlatList optimisation 

· TypeScript — strong typing for React Native components and API models 

· Unit testing with Jest + React Native Testing Library 

· Experience distributing to Google Play + Apple App Store 

Required Qualifications

·3–5 years of professional mobile development experience  

· At least 2–3 years specifically in React Native (not just React) 

· Demonstrable experience shipping apps to production on both Android and iOS  

· B.E. / B.Tech or equivalent in Computer Science or related field  

· Strong debugging skills in hybrid/native bridge scenarios  

Why Join Kadel Labs?

• Opportunity to work with a fast-growing, innovative company.
  
• A dynamic work environment where creativity and new ideas are encouraged.
  
• Competitive salary and benefits package.
  
• Professional development opportunities in a people-first culture.
  

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