Senior Mobile Application DeveloperOzback Services Private Limited • mumbai, India

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Senior Mobile Application Developer

Ozback Services Private Limited • mumbai, India

3 days ago

Job description

Location : Mumbai (On-site)

Experience : 5–10 years

About the Role :

As a Mobile App Developer, you’ll design, build, and maintain cross-platform mobile applications for iOS and Android . You’ll work closely with design and backend teams, optimize app performance, and help manage releases through modern CI / CD workflows.

Responsibilities :

Develop and maintain cross-platform apps using React Native (TypeScript) + Expo
Ship features end-to-end : requirements → architecture → implementation → testing → release
Integrate REST / GraphQL APIs, manage auth flows, caching, and error handling
Manage releases with EAS , OTA updates , and app store submissions
Set up and optimize CI / CD pipelines (GitHub Actions, Bitrise)
Implement unit, integration, and E2E testing (Jest, React Native Testing Library, Detox)
Monitor performance and crashes (Sentry, Firebase) and optimize startup & bundle size

Required Skills :

Strong expertise in React Native , Expo , and TypeScript

Solid understanding of state management (Redux / Zustand / Recoil)

Experience with offline storage, push notifications, and in-app purchases

Strong Git, CI / CD, Agile / Scrum knowledge

REST / GraphQL integration, websockets, JSON handling

Degree in CS / SE or equivalent hands-on experience

Nice to have :

Understanding of platform-specific UX (iOS HIG, Android Material)

Store policies : App Store Review Guidelines & Google Play policies

Privacy : iOS Privacy Manifest, SDK data disclosures

Android packaging (AAB, Play-managed signing, dynamic delivery)

Background processing : iOS BackgroundTasks, Android WorkManager

Notifications, foreground services (Android 14+)

Widgets, Live Activities, experiments, feature flags

Security : Keychain / Keystore, cert pinning, OWASP MASVS

Ability to write small native modules (Swift / Kotlin / Obj-C / Java)

i18n / l10n, RTL support, store metadata

Familiarity with AWS / GCP / Azure, Firebase, feature-flag services

What you'll work on

New feature development for our flagship apps, plus greenfield initiatives.

Performance & reliability improvements (bundle size, Hermes, build times, app startup).

Release automation (EAS + store submissions), staged rollouts, and experimentation frameworks.

Perks & Benefits :

Mac + iOS / Android test devices

Learning budget, conferences, and innovation time

Flexible work options and a supportive, low-ego team.

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Mobile Application Developer • mumbai, India

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