Senior Software Development Engineer Test

Senior Software Development Engineer in Test The ClientThis organisation is building a next-generation payments platform designed to enable instant, high-value global transactions by combining modern digital asset infrastructure with the reliability of traditional financial systems.The RoleThis is a senior, high-impact position working closely with executive leadership and a small team of experienced engineers. You will take ownership of testing strategy, quality standards, and deployment reliability across both mobile and backend systems.Key ResponsibilitiesDesign, build, and maintain end-to-end testing frameworks for React Native applications and Node.js servicesDevelop robust test environments that replicate real-world conditions, including latency, offline scenarios, and diverse device performanceLeverage modern tools, including AI-assisted testing, to expand test coverage and identify edge casesOptimise CI/CD pipelines to ensure efficient, reliable, and secure releasesContribute to the development of scalable, high-performance systems handling sensitive financial transactionsUphold high standards of code quality through testing, review, and clean architectureRequired ExperienceStrong expertise in TypeScript and Node.jsProven experience with React Native (Expo experience advantageous)Hands-on experience with modern testing frameworks such as Playwright, Detox, or MaestroExperience configuring CI/CD pipelines (e.g. GitHub Actions, CircleCI)Deep understanding of performance, reliability, and testing beyond functional requirementsAbility to troubleshoot across the full technology stackStrong communication skills and ability to collaborate cross-functionallyComfortable operating in a fast-paced, evolving startup environmentDesirable Skills Experience in fintech or blockchain ecosystems (e.g. payments integrations or digital asset infrastructure)Previous experience in early-stage startups with significant ownershipExperience establishing QA processes and frameworks from the ground up