Senior Kotlin Developer

Summary

We are looking for a results-driven Senior Kotlin Developer with deep expertise in:
modern Android development
deep knowledge in BLE, NFC and Beacons
UX/UI implementation
and CI/CD

The ideal candidate is ready to lead and deliver the next generation app with a strong focus on:
quality
usability
and maintainability.

Personal Skills
Ability to speak, understand and write English fluently
Empathic communicator
Able to manage complex situations, like taking over applications/developments from developers to be phased out
Hitting the right abstraction layer for technical documentation.

Technical Skills
Master degree in computer science, comparable degree or more that 10 years of experience in development
More than 3 years of experience in Android development using Kotlin
Proven experience delivering at least one app with 25,000+ installs
Experience integrating Android apps with SAP or comparable backend systems
Strong knowledge of Git, Git Hub, and Git Flow

Experience with Agile methodologies (Scrum, Kanban)
Solid understanding of databases and SQL
Languages & Frameworks:
Kotlin, Java, Android SDK, Jetpack (Compose, View Model, Live Data, Navigation), Coroutines, Flow
Tools & Platforms:
Android Studio, Gradle, Jira, Confluence
IEC 62443 - security/secure development lifecycle
Exposure to/experience with physical access and mobile credential solutions
Experienced in performance, reliability and battery optimization.

Technical
UX/UI Implementation:
Advanced skills in translating Figma/Sketch designs into pixel-perfect Android interfaces using Jetpack Compose and Material Design, with strong focus on accessibility (Talk Back, scalable fonts, contrast)
Architecture & State Management: MVVM, Clean Architecture, Modularization, Dependency Injection (Hilt/Dagger)
Testing:
Unit Testing (JUnit), UI Testing (Espresso), Test Automation, Regression Testing
CI/CD:
Jenkins, Git Hub Actions, Gradle pipelines, Play Store automation (internal, beta, production tracks)
Monitoring & Analytics:
Firebase, Crashlytics, Sentry

Collaboration:

Agile/Scrum, Jira, Confluence, Code Reviews (Pull Requests)
Documentation:
Markdown, API documentation, Confluence

Experience with Bluetooth communication and Android BLE stack (interfacing with hardware, apps working offline)
Azure cloud environments and REST API

Technical Skills - Optional
App Distribution:
Google Play Store, Enterprise distribution (e.g. MDM / Air Watch)
Secure handling of Air Watch payloads
Air Watch administration know-how
Knowledge of enterprise security and configuration management on Android

Experience with inter-app communication (Intents, AIDL, shared storage)

Experience with multi-window / large screen / tablet optimization

Experience with app analytics and rollout platforms (e.g., Firebase Remote Config)
Knowledge of ABAP development or SAP backend integration
Experience integrating with SharePoint or enterprise content systems
Full-stack development experience
Familiarity with cross-platform technologies (e.g., Kotlin Multiplatform)

Company Preconditions
Mandatory precondition:
At least 3 developers meeting the mandatory skills for developers
None of the major Schindler competitors is shareholder
Ensure the compliance to Schindler development standards
Ensure the compliance to Schindler IT security standards
Optional preconditions:
Global footprint
Extended workbench nearshore and/or offshore
Not working for one of the major Schindler competitors