Sr. Software Development Engineer in Test (Sr. SDET)

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