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Data Wow Co., Ltd.

QA Automation Engineer (Senior)

Data Wow Co., Ltd. Bangkok, Thailand

IT Services and IT Consulting · 51-200 employees

Yesterday
Remote qa Mid (2-5 yrs) Full-time Thailand
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About the role

Design and maintain automated test suites for LLM and ML features, including retrieval pipelines and production monitoring. Ensure software quality by defining exit criteria, managing CI/CD test stability, and tracking performance metrics like cost and latency.

What they look for

Python TypeScript Java LLM testing ML testing Pytest Playwright Cypress RestAssured CI/CD API testing SQL Data pipeline testing Test automation Quality assurance

Requirements

Requires 4-5 years of experience in test automation or software engineering with a strong command of Python. Candidates must have hands-on experience testing LLM or ML-based products and proficiency in automation frameworks like Pytest or Playwright.

Benefits

Group health insurance Monthly grab transportation credits Job-related training courses Certificate fee coverage Annual leave Free snacks and drinks

Full description

  • Build evaluation suites for LLM and ML features: curated test sets, scoring against reference answers, LLM-as-judge where it is justified, and human review where it is not.
  • Define what "good enough" means with the delivery team before launch, in numbers a client can accept, and hold releases to it.
  • Test retrieval pipelines end to end, covering chunking and indexing, retrieval quality, grounding of the final answer, and behaviour when the right document is simply not there.
  • Write regression tests that tolerate non-deterministic output, using semantic similarity, structured-output validation, tolerance bands, and repeated sampling rather than exact string matching.
  • Cover failure modes that matter to clients: hallucination, prompt injection through user or document content, leakage of data across tenants or sessions, refusal and over-refusal, and degradation on Thai-language input.
  • Track cost and latency alongside accuracy, so that a quality improvement that triples token spend is visible before it ships.
  • Detect drift after release by comparing production samples against the baseline, and raise it early rather than after the client does.
  • Design and maintain automated test suites for APIs, services, data pipelines, and web applications built for client projects.
  • Run tests in CI, keep them fast and stable, and treat a flaky suite as a defect in its own right.
  • Set the test strategy at the start of an engagement: what gets automated, what stays manual, what the exit criteria are, and what evidence the client will receive.
  • 4-5 years in test automation, QA engineering, or software engineering with substantial testing ownership.
  • Strong programming ability in Python, or in TypeScript or Java with the willingness to work primarily in Python.
  • Hands-on experience testing an LLM or ML-based product in production or close to it.
  • Practical command of at least one automation framework such as Pytest, Playwright, Cypress, or RestAssured, and experience running suites in CI.
  • Working knowledge of API and data testing, including SQL and validating data through a pipeline.
  • The judgement to decide what deserves automation and what does not, and to say so when a suite is producing noise rather than signal.
  • Clear written and spoken communication in Thai and English.
  • Hybrid Working options with Flexible Working Hours.
  • Your Choice of Gear: Mac or Windows? You pick your preferred work equipment.
  • Comprehensive Group Health Insurance.
  • Monthly Grab Transportation credits.
  • Job-related training courses and certificate fee coverage.
  • 10+ days of annual leave.
  • Free snacks and drinks available at the office.

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