Kotlin Multiplatform Developer (IoT & Mobile)

Summary

Andersen, an international IT company, invites a Kotlin Multiplatform Developer (IoT & Mobile) to work on large-scale projects.

Andersen is a pre-IPO global software development company with over 18 years of experience delivering full-cycle IT services. We specialize in helping enterprises and fast-growing mid-sized businesses accelerate their digital transformation through modern, scalable, and secure software solutions.

Our company operates across a global network of 18 development centers and offices, strategically located in North America, Western and Central Europe, the Middle East, and the Asia-Pacific region. With a strong team of over 3,500 highly skilled professionals, we combine deep domain expertise and advanced technical capabilities to consistently deliver exceptional results for our clients.

Responsibilities

• Developing cross-platform mobile applications using Kotlin Multiplatform (KMM).
• Implementing real-time data exchange between mobile clients and devices via MQTT.
• Integrating Firebase services, including Authentication, Firestore, Messaging, and Crashlytics.
• Collaborating with backend and product teams to define and deliver new features.
• Ensuring high performance, code quality, and maintainability across Android and iOS.
• Writing unit and integration tests to support stable releases.

Requirements

• Experience in mobile application development for 4+ years, including experience with Kotlin Multiplatform (KMM) for 1.5+ years.
• Strong proficiency in Kotlin, Coroutines, and multiplatform architecture (shared logic, platform modules).
• Experience working with the MQTT protocol in IoT, telemetry, or real-time communication scenarios.
• Practical experience integrating Firebase services such as Firestore, Realtime Database, Analytics, and Cloud Messaging.
• Understanding of Clean Architecture, MVVM/MVI patterns, and modular app design.
• Experience using Git, CI/CD pipelines, and participating in code review workflows.
• Familiarity with both Android Studio and Xcode when working on shared projects.
• Level of English – from Intermediate+ and above.

Desired skills

• Experience with Compose Multiplatform or SwiftUI for UI development.
• Knowledge of WebSocket or Bluetooth Low Energy (BLE) communication.
• Familiarity with Docker, Kubernetes, or cloud deployment tools such as Firebase Functions or AWS Lambda.
• Understanding of IoT device integration and edge-to-cloud synchronization.
• Contributions to open-source Kotlin or KMM libraries.

Reasons to join us

• Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc..
• The opportunity to change the project and/or develop expertise in an interesting business domain.
• Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant.
• Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee.
• The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities.
• Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated.
• Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies).
• Certification compensation (AWS, PMP, etc).
• Referral program.
• English courses.
• Private health insurance and compensation for sports activities.

Join us!