Senior Android Engineer, App Sync

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Location: Hybrid in Finland
Team: Mobile Engineering
Level: Senior
Employment Type: Full-time

About the Role

We’re looking for a Senior Android Engineer to join our mobile team and help shape the future of connected health experiences. You’ll lead the design and implementation of advanced mobile features with a focus on synchronization between Android and cloud, Bluetooth connectivity, and real-time time-series health data from our wearable devices.

This role is ideal for someone passionate about crafting reliable, secure, and elegant solutions at the intersection of hardware, mobile, and cloud. You'll play a key role in ensuring that time-series physiological data is collected with high fidelity, processed with data purity and reliability, and synchronized with backend systems in a secure and performant manner.

What You’ll Do
Lead the development of scalable, maintainable Android systems for health-related time-series data collection and sync.
Architect and maintain robust Bluetooth Low Energy (BLE) connectivity with Oura devices — including connection lifecycle, data transfer, and resilience.
Design and implement synchronization pipelines for offline-first experiences and seamless cloud integration.
Champion best practices in data reliability, data purity, and data privacy, ensuring compliance with high standards for user trust and security.
Handle and optimize high-volume, time-series data flows — including buffering, batching, and storage strategies.
Apply modern concurrency frameworks (e.g., Kotlin Coroutines, Flows) to ensure smooth, responsive performance during data operations and synchronization tasks.
Collaborate with firmware, backend, and cloud teams to design interfaces and APIs for interoperable, robust systems.
Write technical documentation, conduct reviews, and mentor team members on advanced mobile engineering practices.

What We’re Looking For
5+ years of professional Android development experience with Kotlin.
Hands-on experience with BLE communication, including GATT profiles, characteristic parsing, and handling of unreliable connections.
Proven expertise in client-server synchronization, including offline-first design, conflict resolution, and background sync management.
Strong background working with time-series data, high-frequency sampling, and real-time device data streaming.
Deep understanding of data integrity, data consistency, and data privacy best practices.
Fluency in Android concurrency tools — especially Kotlin Coroutines, Flows, RxJava and structured concurrency.
Excellent cross-functional communication skills with a proactive and empathetic collaboration style.
Passion for health tech and driving measurable impact through engineering.

Benefits

What we offer:
Competitive salary
Lunch benefit
Wellness benefit
Flexible working hours
Collaborative, smart teammates
An Oura Ring of your own
Occupational healthcare
Personal learning & development program
Wellness Time Off
Possibility to work fully remote if that’s what you prefer. Our squad is remote first.

Oura is proud to be an equal opportunity workplace. We celebrate diversity and are committed to creating an inclusive environment for all employees. Individuals seeking employment at Oura are considered without regards to age, ancestry, color, gender (including pregnancy, childbirth, or related medical conditions), gender identity or expression, genetic information, marital status, medical condition, mental or physical disability, national origin, socioeconomic status, protected family care or medical leave status, race, religion (including beliefs and practices or the absence thereof), sexual orientation, military or veteran status, or any other characteristic protected by local laws. We will not tolerate discrimination or harassment based on any of these characteristics.

What next?

Ready to make a real impact on people’s health and well-being? Join our fast-moving team where your work will directly shape how millions of users understand and improve their lives. We’re excited to see what we can build together.