Senior Mobile Engineer

4 days ago

Lagos, Lagos, Nigeria duplo Full time ₦900,000 - ₦1,200,000 per year

Duplo is a Lagos-based fintech startup that enables businesses in Africa to automate their spend management, simplify cross-border payments, and control business finances all on one platform.

We want to make B2B payments as simple as P2P payment apps. Most business payments in Africa are made offline….yikes. We are on a mission to transform this. We are backed by top investors including Tribe Capital, Commerce Ventures, Liquid2 Ventures, My Asia VC, Soma Capital, YCombinator, Oui Capital, and others.

As we build our brand-new mobile product, we are seeking an experienced Senior Mobile Engineer to lead the architecture, development, and deployment of our mobile apps on both the Android and iOS stack.

As the Senior Mobile Engineer, you will be the technical cornerstone for our mobile development efforts. Collaborating with key stakeholders like the Technical Lead, Product Leads and CTO, you will own the entire mobile app lifecycle, from initial design to internal testing and release on App Store and Google Play, setting the foundation for future mobile engineers to join. Your deep expertise with React Native and Flutter will empower you to build performant, scalable, and maintainable apps that deliver an outstanding user experience globally.

Key Responsibilities

  • Lead end-to-end mobile app development for Android and iOS platforms in a greenfield Mobile project.
  • Architect, build, and maintain apps using React Native and Flutter frameworks.
  • Manage deployment pipelines and releases to both development/testing environments and app stores (Apple App Store & Google Play Store).
  • Collaborate deeply with product, design, product developers, and QA teams to translate product vision into technical execution.
  • Establish and automate best practices for mobile app development, automated testing, CI/CD pipelines, and monitoring.
  • Build robust internal testing strategies including TestFlight, Firebase App Distribution, and any relevant tools for efficient QA workflows.
  • Optimize app performance, responsiveness, and reliability across a wide range of devices and operating systems.
  • Provide strong mentorship and documentation to set standards as the first mobile hire.

Required Qualifications

  • 6+ years of professional mobile development experience targeting iOS and Android platforms.
  • Proven hands-on experience with React Native and Flutter frameworks in production applications.
  • Demonstrable success deploying apps to the App Store and Google Play, including test flight/internal distribution management.
  • Deep understanding of native mobile development tooling: Xcode, Android Studio, Fastlane (app automation).
  • Experience with automated testing frameworks (e.g., Jest, Detox, Flutter test).
  • Familiarity with version control, CI/CD tools such as GitHub Actions & Jenkins
  • Experience with Android / IOS release management planning
  • Background in designing app architectures, state management, and scalable feature development.
  • Solid SQL/NoSQL experience and RESTful API integration knowledge.
  • Strong problem-solving skills with a passion for quality and clean code.

Preferred Skills

  • Experience with mobile app analytics and crash reporting tools (e.g., Firebase Analytics, Sentry).
  • Industry knowledge of security best practices in mobile applications, including data encryption and secure storage.
  • Familiarity with Agile methodologies and collaborative dev workflows.

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