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.
Key Responsibilities
- 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.
- 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.
About Ajaib Crypto
Ajaib Crypto, launched as the dedicated digital asset arm of Indonesian unicorn Ajaib founded in 2018 by Anderson Sumarli and Yada Piyajomkwan in Jakarta, is one of Southeast Asia's fastest-growing retail crypto and investment platforms. Licensed and supervised by Bappebti and the Financial Services Authority (OJK), Ajaib Crypto provides millions of Indonesian millennials and Gen-Z investors with instant rupiah on-and-off ramps, spot crypto trading, staking and educational modules. Backed by leading global investors including Ribbit Capital, SoftBank and Horizons Ventures, Ajaib blends consumer-friendly mobile UX with institutional-grade custody and local bank rails. The culture values financial inclusion, mobile productcraft and executing under rigorous local compliance frameworks.