Mobile Engineer

What you will do :

Understand the architecture and lead the development of our lending app across Android and iOS platforms.

Own critical features end-to-end : from requirement analysis, design, coding, testing, deployment, to post-release monitoring.

Build intuitive, high-performance, and secure app experiences that drive trust and adoption in financial products.

Work closely with product, design, and backend teams to deliver features that improve loan journeys, repayments, and customer engagement.

Integrate with native device capabilities, 3rd party SDKs, payment gateways, and regulatory frameworks (KYC, compliance, etc.).

Optimize app performance for scale such as battery usage, network reliability, and offline-first workflows.

Mentor junior developers, review code, and follow the best practices in mobile architecture and CI / CD pipelines.

Bridge the native and cross-platform worlds by building and maintaining robust communication layers between our core Android components, ensuring seamless and performant interactions.

Stay updated with industry trends (AI / ML-driven personalization, app security, open banking APIs) and bring innovative ideas to Prefr.

You should apply if you :

Have 5–8 years of proven experience in building and scaling consumer-facing apps (at least 1 end-to-end app on both Play Store & App Store).

Are proficient in Kotlin / Java (Android) and Swift / Objective-C (iOS) , with good exposure to Flutter / React Native for cross-platform features.

live and breathe performance tuning, with demonstrable experience in debugging and optimizing memory, threading, and rendering issues on Android

Have experience in fintech or lending apps (preferred), understanding secure data handling, payments, and compliance requirements.

Thrive on building pixel-perfect UI / UX and delivering smooth, reliable user journeys.

Have strong problem-solving skills, an ownership mindset, and the ability to lead technical discussions.

are open to learning new technologies and are excited to grow your skills across the mobile stack.

Bonus : Experience with AI-first app development (AI-assisted workflows, personalization, or chatbot integration).

Why join Prefr?

Opportunity to shape the future of app-based lending in India .

Work with a passionate, fast-moving team that values ownership and innovation.

Flexible and transparent work culture.

Competitive compensation and industry-best benefits.

Must Have

Demonstrated evidence of writing Kotlin (Android) and Swift (iOS) .

Strong understanding of OOP and common design patterns ; practical MVVM on both platforms (Hilt / DI on Android; Coordinators / DI patterns on iOS).

Strong analytical and troubleshooting skills for root-cause analysis (Crashlytics, Logcat / ADB, Xcode logs, Instruments / MetricKit).

Solid networking fundamentals on both : Retrofit / OkHttp (Android) and URLSession / Alamofire (iOS); auth / refresh, interceptors / middlewares, robust error handling.

Ability to build modular, extensible features / libraries (Android feature modules; iOS frameworks / SPM / CocoaPods).

Demonstrated evidence of data / analytics instrumentation (Firebase Analytics / BigQuery or equivalent) and event taxonomy.

Understanding of RESTful API usage and versioning; collaborate effectively with microservices backends.

Deep links / app links on Android (HTTP App Links) and Universal Links on iOS; WebView / WKWebView integrations with JS bridges.

Push notifications end to end : FCM (Android) and APNs (iOS), including deep links and attribution.

Store operations & compliance on both : Google Play (targetSdk, Data Safety) and App Store (ATS / privacy, review guidelines).

Should Have

Foster usage of modern language constructs via code reviews (Coroutines / Flows, sealed classes on Android; async / await, structured concurrency on iOS).

Experience with unit / UI / integration testing : JUnit / MockK / Espresso / Compose tests (Android); XCTest / XCUITest / Quick / Nimble (iOS).

Understand high-level design and write low-level design docs for mobile features / modules.

Manage and prioritize multiple tasks in a fast-paced environment; clear communication with product / QA / backend / design.

Experience with the Firebase suite across both platforms : Analytics, Crashlytics, Remote Config, and Performance.

Experience with CI / CD : Gradle + Fastlane / Play Publisher (Android); Xcode build systems + Fastlane / TestFlight (iOS); GitHub Actions / Jenkins.

Experience with monitoring / release health : Crashlytics, Play Console vitals, Xcode Organizer / MetricKit.

Nice to have

Mobile security hardening : certificate pinning (OkHttp / TrustKit), Play Integrity (Android) / DeviceCheck / App Attest (iOS), anti-debugging / root / jailbreak heuristics.

Ability to solve problems at scale (heavy WebView journeys, OEM / device fragmentation, performance & memory tuning).

A / B experiments and Remote Config -driven rollouts.