QA Engineer (6-10 months contract)

Who We Are  

Located in the heart of Bangkok’s Phrom Phong District, Sertis is ASEAN's leading Data and AI engineering and solutions company. Since 2014, our advanced solutions and products have powered over 400 enterprise Data and AI deployments at the region’s leading companies and conglomerates. We are also a member firm of Andersen Consulting, a global consulting practice integrating business strategy, digital transformation, and AI-driven technology solutions with Andersen Global’s world-class expertise.

What We Do  

Sertis provides both productized and bespoke AI and Data solutions for our Customers, optimizing and commercializing their data in ways that activate real business results. Our 140+ team have developed product offerings and IP ranging from advanced Computer Vision applications accredited Global Top 20 by NIST, to automated insights monetization for Retailers, eKYC for financial institutions, AI-driven agricultural safety assurance, precision steel cutting, trading algorithms for hedge funds, and enterprise knowledge management systems based on AI.

Our Aspiration 

We are data and AI pioneers, dedicated to enhancing the economic and social lives of our customers via technology.   We are not just living in history, we are making history everyday.  In becoming one of the world’s leading Data and AI companies, we always double-down on remaining a place where a diverse mix of talent wants to come, do their best work, and stay. We pride ourselves on bringing the best talent worldwide into a culture that encourages learning, growth opportunities, innovative contributions, and a sense of ownership. As part of Andersen Consulting, we are committed to delivering best-in-class Data and AI solutions—aligned with a global platform known for innovation, integration, and impact—while continuing to set benchmarks in the region and beyond.

For more information, please visit: sertiscorp.com

We are looking for a QA Engineer with solid experience in Java-based test automation. You will be responsible for designing, writing, and executing automated test cases that validate the correctness of our Java backend systems, particularly throughout a legacy-to-modern Java migration project.

In this role you must be comfortable reading both Java 8 legacy code and Java 21 modern code and writing automated tests using Java-based testing frameworks. Since the project involves migrating from Java 8 to Java 21, you will encounter both throughout the role. Strong English and US time zone availability are mandatory.

*This is a fully remote role, working under US Time zone.

In this role, you will get to:

• Design and implement automated test cases for Java backend services using frameworks such as JUnit, Selenium, or equivalent.
• Read and understand Java source code to derive test cases and identify edge cases.
• Develop and maintain regression test suites covering both legacy and migrated code.
• Perform functional, integration, and regression testing across the application.
• Collaborate with Java Developers to understand features, clarify requirements, and report defects with clear reproduction steps.
• Set up and maintain test automation infrastructure (test runners, CI integration, reporting).
• Track, document, and verify bugs through the complete defect lifecycle.
• Provide quality metrics and test coverage reports to the team and stakeholders.

You’ll be successful if you have:

• 2–4 years of experience as a QA Engineer with at least 1–2 years in a Java-based testing environment.
• Ability to read and understand Java 8 and Java 21 code. You will be testing code written in Java 8 and 21 and must understand what it is doing in order to test it correctly.
• Hands-on experience with one or more Java testing frameworks: JUnit 4/5, Selenium WebDriver, TestNG, or RestAssured.
• Understanding of testing types: unit testing, integration testing, end-to-end testing, regression testing.
• Familiarity with test management and defect tracking tools (Jira, TestRail, or similar).
• Experience integrating automated tests into CI/CD pipelines (Jenkins, GitHub Actions, etc.).
• Strong English communication skills both in written and spoken to communicate with the US team smoothly
• Willing to work remotely in the US time zones.

It’s Nice If You Have:

• Experience testing REST APIs using tools like RestAssured, Postman, or similar.
• Familiarity with performance/load testing tools (JMeter, Gatling).
• Exposure to BDD frameworks such as Cucumber with Java.
• Understanding of Spring Boot application structure for better test design.

What this opportunity offers

• Fully remote position (work from anywhere under the US time zones)
• Opportunity to learn modern Java practices on a real migration project with senior mentorship.
• Collaborative and supportive team environment.

APPLY NOW!