Mobile Engineer Job at Jaza Energy

Jaza is a solar energy start-up working to power Sub-Saharan Africa. We build solar-powered shops which charge batteries customers use to power their homes. In 2022, we achieved over 1.5 million battery swaps, providing approximately 186,000 people access to clean, affordable energy. We employ women from each community (known as Jaza Stars) to run the service, empowering our team to become leaders, entrepreneurs and drivers of economic growth within their communities. We’ve already successfully entered the Nigerian market, piloted several sites here and will grow to hundreds of locations over the next year. To support this expansion, we’re planning to hire over 200 people over the next 6 months.

We are recruiting to fill the position below:

Job Position: Mobile Engineer
Job Location:  Lagos

Position Overview

• We're seeking an experienced Full Stack Software Engineer (Mobile) to join our team and contribute to the development and maintenance of Jaza mobile applications.
• You'll work on production applications built with cutting-edge Android technologies, following clean architecture principles and industry best practices.
• This role emphasizes mobile development while providing opportunities to collaborate with backend teams and contribute to full-stack solutions.

Requirements

• 3+ years of Android development experience with production apps on Google Play Store
• Strong Kotlin proficiency - Modern Kotlin features, coroutines, and Flow
• Jetpack Compose - Building declarative UIs with Compose
• Clean Architecture & MVVM - Multi-layer architecture, separation of concerns
• Dependency Injection - Hilt or Dagger experience
• Room Database - Local data persistence, complex queries, migrations
• Retrofit & RESTful APIs - Network layer implementation, API integration
• Asynchronous Programming - Coroutines, Flow, StateFlow, suspend functions
• Version Control - Git, branching strategies, pull requests
• Gradle - Build configuration, dependency management, build variants.

Experience Areas:

• Building feature-rich Android applications with multiple modules
• Offline-first architectures - Local-first data with background synchronization
• Working with complex data models and database migrations
• Webhook-based data synchronization - Queue management and retry logic
• Implementing real-time data synchronization and background workers
• Firebase integration (Analytics, Cloud Messaging, Crashlytics)
• Material Design principles and UI/UX implementation
• App bundle generation and Play Store deployment
• Performance optimization and memory management.

Soft Skills:

• Strong problem-solving abilities and analytical thinking
• Excellent communication skills for technical discussions
• Ability to work independently and as part of a team
• Detail-oriented with focus on code quality
• Proactive approach to identifying and resolving issues
• Time management and ability to meet deadlines

Nice to Have:

• Experience with business/inventory management applications
• Background in energy sector or IoT device management apps
• Kotlin Multiplatform (KMP) - Experience with shared code across Android, iOS, and other platforms
• Familiarity with Laravel backend - Understanding of RESTful API integration with Laravel applications
• Basic knowledge of backend technologies - Laravel, PHP, PostgreSQL, RabbitMQ, Redis, API design patterns
• Jetpack Navigation Compose expertise
• WorkManager for background tasks
• Custom Compose animations and transitions
• CI/CD pipeline experience (GitHub Actions, Bitrise, etc.)
• Automated testing experience (JUnit, Espresso, Compose UI tests)
• Experience with multi-environment builds (staging/production)
• Familiarity with DataStore for preferences
• Knowledge of app security best practices
• Play Store optimization and ASO experience.

Tech Stack You'll Work With
Languages & Frameworks:

• Kotlin
• Jetpack Compose
• Coroutines & Flow.

Architecture & Patterns:

• Clean Architecture (multi-layer)
• MVVM Pattern
• Repository Pattern
• Use Cases / Interactors.

Libraries & Tools:

• Hilt (Dependency Injection)
• Room (Database)
• Retrofit (Networking)
• Jetpack Navigation
• DataStore (Preferences)
• Firebase (Analytics, FCM)
• WorkManager (Background tasks)
• Gradle (Build system).

Testing:

• JUnit
• Truth
• Turbine
• Mockito
• Robolectric.