About Moloco

Moloco builds some of the most powerful AI advertising solutions in the world. Our name—short for "machine learning company"—reflects our core mission: democratizing access to the advanced AI that has historically been reserved for tech giants. Led by machine learning pioneers who built some of the most successful ad systems at Google, including YouTube's monetization engine and key search advertising technologies, we're transforming how businesses grow and compete in the digital economy.

Built with AI from day one, Moloco’s planet-scale machine learning platform powers a suite of solutions for advertising growth and monetization. Moloco Ads is an AI-powered platform that delivers real business outcomes for mobile app marketers through performance-based user acquisition. Moloco Commerce Media enables retailers and marketplaces to build revenue-generating ad businesses that balance user experience and advertiser performance.

Moloco is headquartered in Silicon Valley, with offices in Seattle, New York, San Francisco, Seoul, Beijing, Singapore, Gurgaon, Tokyo, Shanghai, London, Tel Aviv, and Berlin.

Moloco is a truly rewarding place to work and in an exciting period of growth, which you could be a part of. Join us today and apply now!

Mission of the Role

Ensure the quality, stability, and reliability of Moloco’s services by conducting rigorous manual testing and building AI Agent-driven automated testing frameworks. The QA Engineer will balance hands-on exploratory testing with modern AI technologies to write test cases, analyze failures, and optimize testing pipelines. By working closely with Software Engineers, you will improve product quality, development efficiency, and release confidence.

What You will Do

• Conduct thorough manual testing for new features, complex edge cases, and user-centric scenarios to ensure high product quality before release.
• Design, build, and scale an AI Agent-assisted test automation framework to transition repetitive manual tests into automated integration and end-to-end tests.
• Utilize AI Agents for automated test generation, script maintenance (auto-healing), and enhancing exploratory testing.
• Analyze bugs and errors found during both manual and automated testing, and communicate actionable findings (repro steps, root-cause insights) to Software Engineers.
• Choose the appropriate testing strategy for each service or feature, balancing manual testing, automation, regression coverage, and release risk.
• Integrate AI-driven QA tooling into CI/CD pipelines to identify quality risks early in the development lifecycle.
• Improve development efficiency and performance by identifying quality risks early and integrating QA into the development process.
• Work closely with Software Engineers to enhance and improve programs, testability, and release quality.
• Maintain clear test documentation, defect records, and guidelines to ensure seamless QA operations.

How Do I Know if the Role is Right For Me?

• Degree in Computer Science, Software Engineering, or a related field, with software-testing coursework or at least one year of software-testing experience.
• Basic understanding of Agile/DevOps software development practices and continuous integration/continuous delivery (CI/CD).
• Strong attention to detail with a proven ability to identify edge cases, negative scenarios, boundary conditions, and gaps in requirements through manual testing.
• Familiarity with API testing, backend service verification, frontend testing.
• Strong written and verbal communication skills in English and Korean.

Preferred Skills

• Experience or strong interest in leveraging AI tools/LLM Agents for QA processes (e.g., automated test script generation, auto-healing, log analysis).
• Familiarity with Jira or comparable test-management and issue-tracking tools.
• Familiarity with security/penetration testing concepts.

Moloco Thrive: Benefits and Well-Being

We take care of you and create the conditions for you to do the best work of your career. Through a lens of inclusion, we offer innovative benefits that empower our employees to take care of themselves and their families so they can do the best work of their lives.

Moloco Values

• Lead with Humility: Everyone’s voice is respected, valued, and heard. With humility, we become more open and accessible to each other. We win, lose, and learn together. Accountability and feedback are essential to our success.
• Uncapped Growth Mindset: We see all situations as opportunities to learn, grow, and improve as individuals and as an organization. We seek diverse perspectives, encourage curiosity, and promote experimentation to push the boundaries of what’s possible.
• Create Real Value: We pursue the most impactful opportunities with rigor and integrity. We take intelligent risks and make disciplined trade-offs to maintain deep focus. We help our customers win by delivering durable value.
• Go Further Together: We’re one team working towards one mission and vision. We collaborate proactively and inclusively, involving the right people at the right time and in the right way. We strive to create a more equitable workplace. We won’t let each other fail.

Additional Resources

• Moloco Company Blog
• Moloco Leadership
• Moloco Newsroom

AI Use in Interviews

Our interview process is designed to get to know the real you. Unless a round specifically includes AI as part of what's being assessed, we ask that candidates engage without AI assistance. Please review our AI Use in Interviews Policy before your interview to understand what to expect. Failure to comply with this policy may impact your candidacy.

Candidate Privacy Notice

Your privacy matters to us. By applying, you acknowledge that you’ve reviewed our Candidate Privacy Notice.