Android Software Engineer (Swiss POS and Payment Product Company)

We are looking for an Android Developer to build and support software for POS (Point-of-Sale) systems. You’ll work on Android applications used in real retail environments, integrating with USB peripherals and EFT/payment terminals, and collaborating across mobile + backend to deliver reliable, testable, production-grade solutions.

What you’ll do

• Develop and maintain Android POS applications used in day-to-day retail operations
• Integrate and support USB peripherals (e.g., scanners, printers, cash drawers) and EFT terminals
• Evolve UI architecture: maintain XML screens, build new features in Jetpack Compose, and contribute to XML → Compose migration
• Design and implement clean, modular app architecture
• Build robust asynchronous flows using Kotlin Coroutines
• Write and maintain Unit tests and UI tests, improving stability and regression coverage
• Contribute to backend features and integrations where needed (Node.js / GraphQL / T-SQL / AWS)
• Participate in code reviews, debugging production issues, and improving performance and reliability

Must-have skills

• Strong Kotlin experience (production apps)
• Kotlin Coroutines for async and concurrency
• UI: Android XML + Jetpack Compose, including migration experience from XML to Compose
• Hands-on experience with USB peripherals and EFT/payment terminals
• Dependency Injection
• Solid experience writing Unit tests and UI tests

Backend

• Node.js
• T-SQL
• GraphQL
• AWS services (e.g., Lambda, API Gateway, DynamoDB/RDS, S3, CloudWatch—depending on stack)

What we value

• Practical engineering mindset: stability, observability, and maintainability matter
• Ability to work with hardware constraints and real-world retail workflows
• Ownership: you can take a feature from idea → implementation → testing → support