Mobile QA Engineer

Description Location: Remote / Hybrid if in NYC area Working primarily in US time zones and collaborating with Vietnam-based engineering teams. Our engineering organization consists of ~30 engineers, with 11 based in Vietnam (Backend, Frontend, QA) and 19 based in the US (Backend, Frontend). We are now looking for a Mobile QA Engineer in the US to own and drive mobile testing activities and be the go-to expert for all things mobile quality. As a Mobile QA Engineer, you will be the owner of mobile quality on our platform. You will be responsible for regression testing, feature validation, test case creation, and release readiness across our iOS and Android applications. You are someone who lives and breathes mobile testing, takes pride in catching issues before users do, and thrives in a fast-paced, release-driven environment.

Key Responsibilities

• Own and lead mobile QA testing across iOS and Android platforms.
• Design, write, and maintain comprehensive test cases and test plans for new and existing features.
• Execute thorough regression testing cycles to ensure platform stability across releases.
• Validate new features during active development in close collaboration with product and engineering.
• Serve as the primary quality gatekeeper for mobile releases, ensuring each build meets quality standards before it ships.
• Identify, document, and track defects with clear reproduction steps and severity assessments.
• Collaborate with the Vietnam-based QA and engineering teams to maintain quality alignment across time zones to ensure sufficient coverage.
• Contribute to and help grow our mobile automation framework as time and capacity allow.

Skills, Knowledge and Expertise

• Mobile Testing Expertise (50%)
• Strong hands-on experience with manual testing on iOS and Android applications.
• Proven ability to write detailed, well-structured test cases and test plans.
• Experience executing and managing regression test suites for mobile applications.
• Familiarity with mobile-specific testing considerations: device fragmentation, OS versions, performance, network conditions and proxy tools such as Proxyman.
• Experience with bug tracking tools (e.g., Jira) and test management platforms such as TestRail or BrowserStack.
• Comfortable working in fast moving Agile/Scrum environments with regular release cadences.
• Domain Knowledge – Betting / Gambling (30%)
• Direct QA or testing experience in the betting, gambling, sportsbook, or betting exchange domain is required.
• Strong understanding of betting concepts such as markets, odds, events, and settlements.
• Experience testing user wallets, balances, and financial transaction flows.
• Familiarity with risk-sensitive and revenue-impacting user flows.
• Exposure to compliance-driven or regulated environments is a plus, especially US-facing products.
• AI Awareness & Adoption (20%)
• Practical or working familiarity with AI tools (e.g., ChatGPT, Copilot) to assist in test case generation or coverage analysis.
• Openness to leveraging AI tooling to improve testing efficiency and output quality.
• Interest in staying current with emerging AI-powered QA tools and techniques.
• Experience with mobile test automation frameworks (e.g., Appium, XCUITest, Espresso, or similar).
• Experience working with distributed teams across time zones.
• Background in fintech or real-money transaction testing.

Why Join Us!

• Competitive compensation aligned to role and market
• Equity opportunities so you share in what we’re building
• A clear connection between impact and reward
• Medical, dental, and vision coverage
• Flexible time off built on trust and accountability
• A culture that respects your time and avoids unnecessary meetings
• Fully remote within the U.S.
• Flexibility to work in the way that helps you do your best work
• Be the definitive mobile quality expert at a growing betting exchange startup
• Take on a high-impact role with direct influence on user experience and platform reliability
• Work closely with a globally distributed engineering team on a modern, evolving platform
• Be part of the journey toward CFTC-regulated operations in the U.S. market

About ProphetX ProphetX is a prediction market focused on sports. Our technology allows us to power America’s next great asset class, prediction markets, and the key driver behind them, sports event contracts. We have deep regulatory and operational expertise when it comes to sports-focused exchange infrastructure. We hire smart, passionate people and trust them to own their work. We’re a remote-based team that values flexibility, clear communication, and doing great work together. Build the future of sports markets today. Apply tot his job Apply To this Job