Senior Software Development Engineer in Test

Founded to transform retail finance, Ajaib Group is an Indonesian fintech unicorn breaking barriers to financial access. Having recently secured a $270M Series C—the single largest funding round in Southeast Asia over the past four years—we are backed by premier global investors including Y Combinator, Ribbit Capital, SoftBank, and SBI Holdings. To build world-class products, we assemble world-class talent. Supported by our fully hybrid work arrangement, our team spans Eastern Europe, the Middle East, India, and Southeast Asia, allowing you to work with brilliant engineers and builders from around the globe from wherever you are. Role Overview Ajaib is Indonesia’s leading fintech platform, is seeking a highly skilled Sr. Software Development Engineer in Test II (Sr. SDET II) to drive quality engineering across our rapidly scaling microservices platform. As the technical leader of our QA/SDET function, you’ll shape test strategy, build cutting-edge automation frameworks, and mentor SDETs to deliver zero-defect releases at scale. This is a senior individual contributor role with technical leadership responsibilities - ideal for someone passionate about test architecture, advanced automation, and quality culture, without full-time people management duties. What You’ll Do Own test strategy and automation architecture for multiple squads or product areas spanning backend, frontend, and mobile. Design, build, and scale test automation frameworks for API, UI, contract, integration, and performance testing. Partner with engineering leads and architects to embed testability and quality gates into designs and CI/CD pipelines. Mentor and upskill SDET engineers, review their test designs, and drive best practices across squads. Lead cross-functional initiatives on non-functional testing — performance, reliability, security, and chaos engineering. Collaborate with DevOps to optimize test pipelines for speed, scalability, and reliability. Diagnose complex production issues, perform root-cause analysis, and drive systemic fixes. Innovate and introduce tools, test data solutions, mocks, and dashboards that improve developer productivity and release confidence. Requirements Bachelor’s degree in Computer Science, Software Engineering, or related field (or equivalent experience). 6+ years of experience in QA/SDET/software engineering, with at least 2+ years designing frameworks and leading quality initiatives. Strong programming skills in Python, Java, or JavaScript/TypeScript (can design and extend frameworks). Expertise in modern automation tools (WebdriverIO, Cypress, Appium, Selenium, Playwright, REST Assured, etc.). Proven experience testing distributed systems / microservices architectures, including API contract testing and service mocking. Solid understanding of performance, load, and security testing (JMeter, Gatling, k6, OWASP). Hands-on with CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins, etc.). Exceptional debugging, analytical, and problem-solving skills. Strong communicator with experience influencing engineers and stakeholders at multiple levels. Experience with AI-assisted automation tools or integrating AI to optimize test coverage and efficiency. Benefits Performance Bonus - Get rewarded for the impact you make Private Insurance - Comprehensive health coverage for you Paid Time Off - Take the time you need to recharge and come back stronger Learning & Development - Company-sponsored training, courses, and professional certifications Hybrid Work Arrangement - Enjoy the flexibility of working both remotely and from the office Career Growth - Work closely with experienced leaders and take on meaningful ownership as we scale Employee Perks - Enjoy exclusive discounts, partnerships, and lifestyle perks Collaborative & High-Ownership Culture - Work with smart, driven people in cross-functional teams, take ownership, and make a meaningful impact for our users.