Android Developer

Onyx is building the consumer trading platform for the speculation economy - bringing prediction markets, sports, crypto, and real-world events into one seamless experience. Following our Series A led by Payward, we're growing the engineering team behind a fast, real-time consumer trading platform. We're looking for an Android Engineer to build and scale the native Android experience that powers Onyx. This is a high-impact role for someone who has shipped polished consumer applications end to end and wants meaningful ownership over a core product experience. What You'll Do Design, build, and maintain native Android applications using Kotlin Own features from technical design through development, testing, deployment, and production monitoring Ship production releases through the Google Play Store and manage the full release lifecycle Build intuitive, performant user experiences that feel native to Android Integrate mobile applications with backend services and APIs operating in an AWS environment Develop real-time, highly interactive product experiences powered by live data Optimize application performance, reliability, responsiveness, and stability Build scalable mobile architecture and reusable native components Collaborate closely with product, design, backend engineering, React Native, and infrastructure teams Debug production issues and continuously improve application quality and user experience Contribute to testing, code reviews, CI/CD pipelines, and engineering best practices What We're Looking For 2+ years of professional Android engineering experience Strong production experience building native Android applications with Kotlin Experience shipping applications through the Google Play Store Strong understanding of Jetpack Compose and/or traditional Android Views Experience with Android architecture, networking, state management, testing, debugging, and performance optimization Experience integrating mobile applications with REST APIs and cloud-based systems, ideally in an AWS environment Experience building polished, consumer-facing mobile products Strong product judgment, attention to detail, and end-to-end ownership Comfort working in a fast-moving startup environment Experience with WebSockets, real-time data, payments, trading, sports, gaming, animations, or other performance-sensitive consumer applications is a plus Experience working alongside React Native applications or building native modules is a plus Logistics Location: NoHo, New York City Schedule: Hybrid Compensation: $120,000–$175,000 in total cash compensation, plus equity Experience: 2+ years Work Authorization: Candidates must already be authorized to work in the United States. Onyx cannot provide current or future visa sponsorship for this role.