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.