Interaxon (Muse) is a neurotechnology company building brain-computer interfaces (BCIs). Our Muse EEG headbands measure brain activity and deliver real-time feedback on mental states like focus, calm, and stress. Muse is used by clinicians, researchers, athletes, and individuals to support mindfulness, sleep, and mental health. www.choosemuse.com
We’re looking for an experienced Senior Android Developer to help us maintain and evolve our Android app while shaping its migration to Jetpack Compose + Kotlin Flow. Our current codebase uses XML-based layouts, RxJava, LiveData, and MVVM, but we’re planning a progressive shift toward modern tooling — and we’re open to candidates with expertise in either approach.
Your work will directly impact how people interact with their mental and emotional wellness through real-time neurofeedback. You’ll build tech that’s used by clinicians, researchers, and individuals around the world to improve lives in measurable ways.
Responsibilities
- Build and maintain features using Kotlin, MVVM, and either XML-based UI or Jetpack Compose
- Contribute to the migration from RxJava + LiveData to Kotlin Flow + StateFlow + Jetpack Compose.
- Help define architecture improvements with long-term maintainability in mind
- Collaborate with cross-functional teams to ship clean, high-performance code.
- Optimize app performance and memory usage, especially in relation to real-time data and UI updates
- Integrate shared libraries and third-party modules, including native and WebView-based components.
- Participate in sprint planning, reviews, retrospectives, and technical design sessions.
Requirements
Must Have:
- 4+ years of experience building, maintaining, and shipping Android apps.
- A degree in Computer Science or a related field, with strong fundamentals in data structures, algorithms, and design patterns.
- Strong proficiency in Kotlin, Android architecture patterns (MVVM), and reactive state programming.
- Experience with either:
- XML track: RxJava, LiveData, XML layouts, MVVM, and willingness to support Jetpack Compose migration.
- Jetpack Compose track: Deep experience with Compose and Kotlin Flow/StateFlow, with comfort maintaining some XML/RxJava code.
- Strong collaboration skills with a thoughtful, pragmatic approach to technical discussions.
- Familiarity with Git, CI/CD workflows, and Agile development.
Nice to Have:
- Experience with Firebase, Firestore, Crashlytics, or Fastlane.
- Exposure to real-time data processing or hardware-integrated Android apps
- Prior contributions to Jetpack Compose adoption or reactive architecture refactors
- Exposure to embedded content via React or Unity in a WebView.
- Some experience with iOS or cross-platform development.
- A published app in Google Play
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What We Do
Unlocking the brain, revolutionizing health At Muse, we're dedicated to unlocking your brain's potential and revolutionizing health. Our mission is to empower individuals to achieve optimal well-being through cutting-edge neurotechnology. OUR PRODUCT Muse's brain-sensing headbands, is the culmination of years of innovation and research. Muse is a next-generation, state of the art EEG system that uses advanced algorithms to train beginner and intermediate meditators at controlling their focus and offers non-invasive sleep interventions that work. Trusted by renowned institutions like Harvard, NASA, and The Mayo Clinic, Muse offers a transformative experience backed by over 200 published research studies. In 2014, we launched Muse® the brain sensing headband, the first widely available consumer tool to provide users with real-time feedback on their meditation state using auditory cues. Since then, we have launched multiple devices and generations including our current models, the Muse 2 Headband and the Muse S (Gen 2) Headband. The company has sold more portable EEG devices than any other system in history. With nearly 6 million hours of meditation completed using Muse, representing a staggering 740 years of collective mindfulness, and boasting the world's largest EEG data collection, Muse stands at the forefront of pioneering neurotechnology. WANT TO JOIN OUR TEAM? We are a team of engineers, scientists, marketers, and developers with the mission to enable people to live a happier, healthier, and more connected life with leading brainwave technologies and experiences. Are you ready to shape the future of brain-centric health technology? Check out our open positions at choosemuse.com/careers MUSE LABS Muse Labs is revolutionizing neuroscience by providing an opportunity for you to actively participate in groundbreaking studies, as a citizen of science. Learn more and sign up at choosemuse.com/pages/muse-labs LEARN MORE: choosemuse.com / musehealth.ai
