Avant Tech

Avant Tech
About company

Mobile Developer - Flutter/Kotlin/Dart

On-site

location Lagos

date March 25, 2026

types Full-time

seeking a skilled mobile developer with expertise in Flutter/Dart and Kotlin to

help build and maintain our cross-border fintech mobile app. The ideal candidate will be

responsible for developing and maintaining scalable, secure, and high-performing mobile

applications across Android and iOS platforms. This role requires hands-on experience in Flutter

and Android native development and strong collaboration with cross-functional teams to deliver

a seamless financial experience to our users.

Requirements

Flutter Development: Proficiency in Dart and Flutter SDK. Experience building and

deploying apps on both Android and iOS platforms.

  • Android Development: Solid background in Kotlin and Android Studio, with
  • understanding of lifecycle management, Jetpack components, and native integrations.
  • Backend Integration: Experience consuming RESTful APIs, WebSocket, and handling
  • asynchronous data.
  • State Management: Familiarity with Provider, Riverpod, or BLoC for managing
  • application state in Flutter.
  • Database Handling: Proficient with SQLite and shared preferences; experience with
  • NoSQL (e.g., Firebase or Hive) is a plus.
  • Security: Understanding of mobile app security best practices including secure storage,
  • PIN-based auth, and biometric integrations.
  • CI/CD: Experience with build and deployment tools like GitHub Actions, Bitrise, or
  • Firebase App Distribution.
  • Version Control: Proficient in Git with knowledge of branching, pull requests, and code
  • review processes.
  • Testing: Experience with unit and widget testing using Flutter Test, Mockito, and
  • integration testing frameworks.
  • UI/UX Implementation: Able to translate Figma/XD designs into clean, responsive UI
  • with attention to user experience.

Education: Bachelor’s degree in Computer Science, Engineering, or a related discipline.

  • Experience: 6+ years of mobile development experience, with a portfolio of published
  • apps.
  • Fintech Exposure: Prior experience building financial or cross-border payment
  • applications is a must.
  • Compliance Awareness: Familiarity with compliance workflows (KYC, 2FA,
  • transaction PIN) and mobile data handling regulations.
  • Agile Methodologies: Experience working in sprints, participating in code reviews, and
  • delivering iterative releases.
  • Must have prior experience in a professional setting with production-level app delivery and
  • demonstrate work ethic.

Tools and Platforms

  • Project Management: JIRA, Trello
  • Design Tools: Figma, Adobe XD
  • APIs & Testing Tools: Postman, Swagger
  • Crash/Error Reporting: Firebase Crashlytics, Sentry

Soft Skills

  • Strong analytical and debugging skills
  • Excellent communication and teamwork
  • Self-driven and proactive in solving problems
  • Comfortable working in a remote and dynamic startup environment