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Ajaib

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

Jakarta , Indonesia
full-time

AI overview

Lead the QA engineering function to implement robust automation frameworks across diverse squads and enhance release quality for a financial services fintech platform.

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.
Ajaib

We’ve been experiencing hyper-growth the past year, becoming Indonesia’s 7th Unicorn Startup and the first Investment Fintech Unicorn in South East Asia merely 2,5 years after Ajaib first launched. With the global financial technology market expected to grow gradually, we aim to make stock trading accessible for millennials through our mobile-first approach. In 2022, we opened our new head office in the Indonesia Stock Exchange Building, and we’re just getting started!The three principles or what we call as 3DNAs became the foundation and sets the guideline for the Magician belief system: Everyone is an owner, Growth Mindset, and A Will to Win.

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