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

Ajaib Group; Jakarta Pusat; On-site; IDR 350,000,000 - 600,000,000; Full time

Job summary

Ajaib Group in Jakarta is seeking a Sr. Software Development Engineer in Test II (Sr. SDET II) to lead our QA/SDET function, shaping test strategy and building automation frameworks for a microservices platform.

You will mentor SDETs, drive best practices, and partner with DevOps to optimize CI/CD pipelines. This senior IC role emphasizes test architecture, advanced automation, and quality culture, with responsibility for performance, security, and reliability in a rapidly scaling fintech

Qualifications

• 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.

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.

Skills

Python/Java/TS

Framework design

Distributed systems

CI/CD automation

Debugging/problem‑solving

Education

Bachelor’s degree in CS/Software Eng

Tools

WebdriverIO

Cypress

Selenium

Playwright

JMeter

REST Assured

Job description

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.