Embedded Developer, Muse
Brainwave-sensing technology for sleep and meditation
Be an early applicant
Brainwave-sensing technology for sleep and meditation
21-100 employees
Be an early applicant
21-100 employees
Company mission
To empower individuals to achieve optimal well-being through cutting-edge neurotechnology.
Role
Who you are
- 5+ years of embedded firmware in C and scripting in Python
- Experience with RTOS (ThreadX, Zephyr, etc) or bringing up an unfamiliar vendor SDK. PCB communication protocols, I2C, SPI, UART, JTAG/SWD, etc. ; STM32 an asset
- Experience owning firmware releases, not only writing features — versioning, branching, release criteria
- You are comfortable driving firmware projects by yourself, can design firmware architecture and create scalable firmware protocols
- Experience with secure bootloaders and firmware update mechanisms; MCUboot or comparable, image signing, rollback protection, image signing and encryption
- Experience with BLE, including protocol design and debugging real-world connection problems
- Able to read schematics and component datasheets, bring up an eval board, take the measurements yourself, and give electrical engineers useful feedback on circuit design
- Comfortable with hardware debug tooling — J-Link / ST-Link, SWD, SWO/RTT, logic analyzers and oscilloscopes
Desirable
- Experience with consumer audio (earbuds, headsets, hearables) and Bluetooth audio stacks (Classic and LE Audio)
- Experience with biosignals on wearables or medical-device firmware
- Familiarity with analog and digital signal processing, and with sensor front ends
- Low-power design, PMICs and fuel gauging
- Familiarity with software development life cycle and agile methodology, CI/CD and hardware-in-the-loop testing for embedded
- Working with contract manufacturers or offshore engineering partners; factory test systems
- Willingness to learn and practice meditation
What the job involves
- As an Embedded Developer at Interaxon, you'll be helping to improve and build EEG and biosensing wearables
- You are experienced in digital signal processing in low power, wireless embedded systems, and real time processing of continuous time series data
- This is a small team, so the role reaches from the bootloader up: you will own firmware releases end to end for shipping products, bring up hardware for the products that come next, and be the firmware voice in conversations with our app, cloud, QA and manufacturing partners
- We do not expect you to arrive knowing our whole stack
- What we need is someone who has done this kind of learning before and can do it without a firmware team around them
- You will be writing code in C for embedded controllers, and communicating effectively with other teams within InteraXon
- Owning firmware releases end to end — scope, code freeze, QA and regression cycles, release notes, inter-team communications. You are the person who decides a build is ready to go through the release process
- Maintaining and extending the shipping of STM32 firmware while bringing up new platforms in parallel
- Bluetooth Communication — BLE protocol design, throughput and latency, connection reliability, and debugging connection issues reported from the field across a wide range of phones
- Bluetooth audio: codec integration, I2S/PDM microphone and speaker paths, and audio-over-Bluetooth alongside continuous sensor streaming
- Biosignal acquisition — EEG, PPG and fNIRS front ends, sensor presets, on-device filtering, stream formats and telemetry
- Power — PMIC configuration, fuel gauging, low-power and sleep modes, and the battery-life work that follows from them
- Field debugging — working back from a customer symptom to a root cause in firmware, hardware or the app. Using hardware logs, persistent on-device logging, RTT capture, crash reporting and product analytics
- Manufacturing and test — factory test firmware, flashing flows, test-time reduction, and the internal tooling the hardware and factory teams rely on
- New hardware bring-up — eval boards for peripherals, PMICs, batteries, new sensors; reading datasheets and schematics, running the measurements, and feeding the results back into the next PCB revision
- Working across teams and time zones — with the mobile app team , with cloud team, with QA on regression coverage, with research on data validation, with customer care on field issues, and directly with our contract manufacturing partner in Asia
- Writing professional documentation that other engineers can actually work from — architecture notes, protocol specs, release documentation and onboarding material
- You will also learn and improve your understanding of meditation
Our take
Meditation and sleep have becoming billion-dollar industries as more people look for technology that can help them relax, recover, and improve mental performance. InteraXon, the company behind Muse brain-sensing headbands, operates in the neurotechnology space with wearable devices that measure brain activity using EEG sensors. Its products combine hardware, mobile apps, and cloud-based data analysis, and the company has built one of the largest real-world datasets of brain activity from millions of user sessions.
Originally known for meditation feedback, and sleep tracking, Muse has expanded into tools that actively help improve sleep. Its latest device, Muse S Athena, measures brain activity overnight and uses AI models trained on large amounts of EEG data to detect different sleep stages. New features such as Deep Sleep Boost deliver quiet sound cues timed to the brain's natural rhythms to help strengthen deep sleep - the stage most important for recovery, memory, and long-term brain health.
Muse is increasingly focused on turning brain data into practical guidance and interventions. Features like AI sleep coaching and brain-aware alarms aim to help users fall asleep faster, sleep more deeply, and wake at the right moment from their sleep cycle. Beyond consumers, the platform is also used by researchers and clinicians studying sleep, mental health, and cognitive performance, with the goal of making brain health tools available outside of traditional sleep labs.
Steph
Company Specialist at Welcome to the Jungle
Insights
-11% employee growth in 12 months
Company
Funding (last 2 of 5 rounds)
Aug 2022
$9.5m
SERIES C
Nov 2017
$11.6m
SERIES B
Total funding: $38.3m
Company HQ
Fashion District, Toronto, ON
Leadership
Ariel Garten
(Co-Founder & Chief Evangelist Officer)Studied neuroscience at the University of Toronto, and worked in labs researching Parkinson’s disease and hippocampal neurogenesis. Experience as a fashion designer whose clothing opened Toronto Fashion Week in 2003, and was also a private therapist for 6 years.
Chris Aimone
(Co-Founder & CTO)Built installations for the Ontario Science Centre and contributed to major technology art projects featured around the world, exploring human-centric and transformative technology. Has developed early prototypes of cybernetic wearables, brain-computer interfaces and augmented reality. Co-founded a musical instrument company that produced the world’s first water-based organs.
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