Quality Assurance Engineering

QA Engineer Lead (fixed-term contract)

Quality Assurance Engineering|Contract

We are looking for a QA Engineer Lead to define and drive quality engineering practices across our payments platform.

This is a senior, hands-on role for someone who can design test architecture while actively contributing to automation and delivery.

You will play a key role in improving system reliability, scaling automation coverage, and embedding quality into the development lifecycle. You will work closely with Engineering, Product, and DevOps teams to ensure that systems are delivered with strong test coverage, stability, and performance in a high-transaction environment.

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

In this role, you will get to:

  • Define and lead test strategy and automation approach
  • Build and scale test automation frameworks
  • Ensure strong test coverage (functional, integration, regression)
  • Integrate testing into CI/CD pipelines and quality gates
  • Partner with engineers to embed quality early in development
  • Lead API and backend testing across services
  • Track quality metrics (coverage, defects, release readiness)
  • Support debugging and root cause analysis in production issues
  • Mentor QA / engineers and drive best practices

You’ll be successful if you have:

  • 4+ years of experience in QA, test automation, or backend testing with a Java-based testing environment.
  • Strong hands-on experience building and scaling automation frameworks
  • Expertise in automation tools such as Selenium, Playwright, Cypress, or similar and strong coding skills at least one languages (Java, JavaScript or Python)
  • Strong experience with API testing tools (Postman, RestAssured, or equivalent)
  • Solid understanding of software testing principles, including test design and risk-based testing
  • Experience working with CI/CD pipelines and integrating automated testing
  • Strong understanding of microservices architecture and distributed systems
  • Experience working in high-availability, production-critical environments
  • Strong problem-solving skills with the ability to debug complex system issues
  • Ability to operate independently with high ownership and accountability with clear communication skills, able to influence engineering and product stakeholders
  • 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 in fintech, payments, or high-transaction systems
  • Experience with performance and load testing (JMeter, k6, or similar)
  • Familiarity with containerized environments (Docker, Kubernetes)
  • Experience with observability tools and test reporting dashboards
  • Exposure to security testing practices

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!

Benefits & Perks
15 Days Annual leave & 5 Days Personal Leave
Health Insurance
Annual Health Check-up
Referral Bonus 30K
Buying Books / Sertis Library
Free Snacks & Soft Drink
Team Building Activity
Birthday Gifts
Provident Fund
Bonus
people at Sertis
Be a part of

Quality Assurance Engineering

team
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5 steps

for interview

Depends on the department

1

Short Screen Video Call with Talent Acquisition

You will be asked a few questions on your experience, skills, availability, career expectations and motivations.

Short Screen Video Call with Talent Acquisition

2

First Interview

You will go through role-related interview and meet the team to speak more in depth about the role.

First Interview

3

Take Home Test

The take home assignment will be given to you based on the requirements of each position so that we understand your skills deeper.

Take Home Test

4

Second Interview

In this interview, you will have a chance to present your assignment or have a talk with cross-functional team members, depending on each position. This round can be either online or offsite interviews.

Second Interview

5

Sertis Offer

Congrats! We want to make you an offer, usually the offer will take place over the phone and we will send the written form later. Take your time! And ask all the questions you need before making a decision. We completely understand and here to help.

Sertis Offer

This is your chance

to build your career

in a growing data driven

industry.|

Because we cultivate intelligence and learning and help people grow beyond their potential.
We seek passion and ambition to turn data into action!
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Address
Sertis Co., Ltd.
597/5 Sukhumvit Road, Khlong Tan Nuea,
Wattana, Bangkok, Thailand 10110
Tel
(66) 2-001-1893
Fax
(66) 2-001-1894
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