Senior Firmware Engineer at Oura

Our mission at Oura is to empower every person to own their inner potential. Our award-winning products help our global community gain a deeper knowledge of their readiness, activity, and sleep quality by using their Oura Ring and its connected app. We've helped millions of people understand and improve their health by providing daily insights and practical steps to inspire healthy lifestyles. Empowering the world starts with living our values and empowering our team. As a quickly growing company focused on helping people live healthier and happier lives, we ensure that our team members have what they need to do their best work — both in and out of the office. We are looking for a Senior Firmware Engineer with a passion for low‑level embedded development and new hardware bring‑up in the wearable technology space. In this role, you will contribute from early product discovery and component evaluation through bring‑up and firmware maturation all the way to production‑quality releases. You will work closely with your firmware teammates and our electronics teams to deliver reliable, power‑efficient firmware for Oura ring users. If you enjoy being the first person to run code on new hardware, bringing up complex embedded systems from schematics and datasheets, this role is for you. What you will do • Bring Up New Hardware Lead firmware bring-up for proto and early product builds: initialize MCUs, clocks, power rails, memories, and key peripherals to verify that new hardware is functional and ready for further development and testing. • Develop and Maintain Low-Level Drivers Design, implement, and maintain device drivers for sensors, PMICs and fuel gauges, NFC/communication interfaces and other board components, integrating them into our shared firmware platform for both factory and customer firmware. • Factory & Validation Firmware for Manufacturing Implement and extend factory test firmware and validation features needed by Electronics Engineering, HW testing, and manufacturing. Ensure that factory firmware supports robust production-line testing APIs and early HW validation for new hardware. • Low-Level Debugging and Problem Solving Diagnose and resolve challenging HW/FW integration issues at board level. Use tools such as JTAG/SWD debuggers, oscilloscopes, logic/protocol analyzers, and detailed logging to identify root causes across firmware, electronics, and manufacturing tests. • Collaborate Closely with Electronics and HW Teams Work side by side with ELE, HW testing, and product program teams in Oulu. Participate in schematic reviews, bring-up plans, test definition, and issue triage to ensure smooth progression from proto to EVT and onwards. • Contribute to Platform and Product Readiness Evolve bring-up and factory code into maintainable, reusable modules. Contribute feedback to component selection and architecture from a firmware point of view to improve debuggability, testability, and manufacturability. Requirements We would love to consider you for this role if you have: • 5+ years of hands-on firmware development experience • Strong background in embedded C/C++ on resource-constrained microcontrollers both in bare metal and RTOS, with a solid understanding of interrupts, peripherals, boot flows, and low-level debugging. • Proven Hardware Bring-up Experience. Track record of bringing up new boards or products from first prototypes: • Initial MCU bring-up (clocks, reset, pin mux, memory, basic peripherals) • Implementing and validating low-level drivers for common embedded interfaces (I²C, SPI, UART, GPIO, ADC, timers, etc.) • Comfort working from schematics, layout, and datasheets. • Board-Level Debug Skills • Strong debugging skills using JTAG/SWD, oscilloscopes, logic/protocol analyzers, and similar tools to track down HW/FW interaction issues during proto and EVT phases. • Factory / Test Firmware Experience (Nice to Have) • Experience developing factory, diagnostic, or validation firmware to support manufacturing test, HW validation, or field diagnostics mainly using Python is a strong plus. • Low-Power, Battery-Operated Systems (Nice to Have) • Exposure to battery-powered or wearable / consumer electronics products, including basic understanding of power states, measurement, and constraints. • Agile Development Practices • Comfortable working in an agile development environment, using modern version control and CI tools, and collaborating effectively with teams across locations. • Education • Bachelor’s or Master’s degree in Electrical Engineering, Computer Science, Embedded Systems, or a related field. • Readiness to travel • Willingness to travel occasionally to ensure smooth ramp up of new production in manufacturing factories or to other Oura locations and partner sites as needed. What we offer: At Oura, we care about you and your well-being. Everyone here at Oura has a ring of their own and we are continually looking to improve employee health. Benefits: • Competitive Salary • Lunch benefit • Wellness benefit • Flexible working hours • Collaborative, smart teammates • Wellness Time Off • An Oura ring of your own If this sounds like the next step for you, please send us your application and CV as soon as possible, but by April 12th the latest. 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 regard 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, 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 federal, state, or local laws. We will not tolerate discrimination or harassment based on any of these characteristics. We will work to ensure individuals with disabilities are provided reasonable accommodation to participate in the interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Disclaimer: Beware of fake job offers! We’ve been alerted to scammers posing as ŌURA recruiters, especially for remote roles. Please note: • Our jobs are listed only on the ŌURA Careers page and trusted job boards. • We will never ask for personal information like ID or payment for equipment upfront. • Official offers are sent through Docusign after a verbal offer, not via text or email. Stay cautious and protect your personal details. To all recruitment agencies: Oura does not accept agency resumes. Please do not forward resumes to our jobs alias, Oura employees, or any other organization's location. Oura is not responsible for any fees related to unsolicited resumes.