QA Engineer (Mobile)

We're a product team building a non-custodial crypto wallet (iOS/Android), a crypto card, and a growing suite of investment products. We ship fast, multiple releases per week across mobile and backend — and quality is critical because our users trust us with their money and assets. We're looking for a highly technical QA Engineer who enjoys working close to engineering, product, and design teams, taking ownership of quality across complex fintech products. This is a hands-on role for someone who combines strong testing expertise with a product mindset and a passion for building reliable systems at scale. We operate under the principle that quality is owned by the entire engineering team. Your role is not to act as a gatekeeper, but to raise the quality bar through technical expertise, collaboration, and continuous improvement of testing practices. Location: Remote What you'll do Test complex fintech and crypto workflows, including transactions, card operations, swaps, KYC flows, asset transfers, and fiat on/off-ramps. Participate in feature design and delivery, identifying risks and quality considerations early in the development lifecycle. Investigate production issues, reproduce defects, and ensure root causes are addressed. Collaborate with developers on automated testing strategy and coverage. Design comprehensive test scenarios and acceptance criteria. Review automated test implementations to ensure meaningful coverage of business-critical functionality. Contribute to a quality-first engineering culture where testing is embedded into the development process. Support incident investigations, post-mortems, and continuous reliability improvements. Monitor product health using observability and analytics tools. Influence product and engineering decisions through data, technical analysis, and risk assessment. Help teams balance delivery speed with product reliability and customer trust. What we're looking for Core QA expertise Strong hands-on experience in manual testing of mobile applications and backend systems, with 5+ years of experience delivering quality in production environments. Deep understanding of test design techniques, exploratory testing, regression strategies, and risk-based testing. Experience testing complex business logic in fintech, payments, crypto, trading, or similarly regulated domains. Strong API testing and debugging skills. Experience working closely with engineering teams on test automation initiatives. Ability to understand system architecture, backend integrations, and data flows. Good understanding of performance, reliability, and scalability testing principles. Tools & Technologies API testing: Postman, Swagger. Traffic inspection and debugging: Charles or similar tools. Monitoring and observability: Sentry, Grafana, Firebase. Mobile testing environments: Android Studio, TestFlight. Test management platforms: Qase, TestRail, or similar. SQL and Git. What makes you stand out Experience building or scaling quality processes in high-growth product environments. Background in fintech, payments, banking, trading platforms, or crypto products. Familiarity with React Native applications and mobile testing frameworks. Experience with AI-assisted engineering and testing workflows. Understanding of security-sensitive user journeys, authentication, signing flows, and asset protection mechanisms. Experience with load and performance testing tools such as k6, JMeter, or Locust. Experience working with KYC/AML systems. How we work We value pragmatism over process for its own sake. We optimize for customer trust, product reliability, and delivery speed. We prefer collaboration, transparency, and technical excellence over hierarchy. What we offer Fully remote work within an international product team. An engineering culture that encourages the adoption of modern tools and practices, giving engineers real influence over technologies, workflows, and technical decisions. Competitive compensation based on experience and impact. The opportunity to work on products used for managing real financial assets. Significant ownership and influence over product quality and engineering practices. Clear growth opportunities across technical, leadership, and cross-functional career tracks. If you're excited about solving challenging quality problems in fintech and crypto, enjoy working closely with engineers, and want to help build products where reliability truly matters, we'd love to hear from you!