Frontend Engineer (React / React Native / Android)

Join AmpaAmpa is a pioneering neurotechnology startup developing brain stimulation technology to help eradicate depression. We will improve millions of lives by making this transformative treatment universally accessible. Joining us means you'll be part of a rapidly growing startup with significant equity opportunities and a major impact on our future.What to Expect: Working at Ampa is a rare chance to help transform global mental health and save millions of lives — a level of impact that demands deep commitment. Success here requires resilience, adaptability, and the discipline to put in long hours. If you thrive in a high-intensity, fast-changing environment and want your work to truly matter, you may do the best work of your life here.Role OverviewWe're seeking an exceptional Frontend Engineer to help lead the design and development of our clinical and operator-facing web and mobile applications. You'll build beautiful, responsive interfaces using React and React Native, and ensure they integrate seamlessly with our backend systems and custom hardware. You'll also work closely with Android and device-level functionality, especially around video processing, USB hardware integration, and real-time feedback.This role is ideal for an engineer who's obsessed with UX, has an eye for detail, and can move fluidly between mobile and web platforms. You care deeply about code quality and performance, but you also care about delivering tools that make a difference in the real world.Tech StackFrontend: React, React Native, TypeScript, Redux, React NavigationMobile Platform: Android (Java / Kotlin bridge knowledge a plus)Backend (interfacing with frontend): PythonDatabase: PostgreSQLCloud: AWS (ECS, S3, CloudFront)Key ResponsibilitiesReact Development: Own our web portal and tablet interface, building intuitive and responsive componentsReact Native Apps: Develop and maintain our clinical Android application with hardware integration capabilitiesMobile UX: Optimize touch interactions, loading times, and offline usabilityDevice Integration: Collaborate with backend and hardware teams to interface with custom medical hardware (e.g., camera feeds, USB devices)UI/UX Feedback Loop: Incorporate clinician and patient feedback to refine interfaces quicklyEngineering Leadership: Help establish frontend coding standards, mentor junior engineers, and review code for quality and maintainabilityWhat We're Looking ForMission Obsessed: Passionate about eradicating depression.Driven: Highly motivated and resilient.Effective: Learns fast, adapts quickly, and consistently delivers results.Frontend Mastery: 5+ years of experience building production-grade interfaces using React and/or React NativeMobile Expertise: Hands-on experience shipping Android apps, with USB hardware and camera integrationML/AI: Experience with computer vision, OpenCV, ML Kit, and TensorFlow, optimized for Android runtimeWhy Join Ampa?Impact: Lead the development of transformative mental health technologies.Growth: Thrive in a startup environment with rapid innovation.Stability: Enjoy startup benefits with a secure product line.Ownership: Receive substantial equity as an early team member.LogisticsWork Mode: In-personLocations: Bay AreaCompensation: $130K - $220K · 0.4% - 1% EquityEmployment: PermanentVisa Sponsorship: Will sponsor TN visa or equivalent. No H1B.