Senior Software Engineer (Java) - Katalon Studio

Ho Chi Minh City, Ho Chi Minh City, Vietnam

Founded in 2016, Katalon is the leading provider of a modern, comprehensive quality management platform. Katalon Platform enables quality assurance, DevOps, and software teams of any size to deliver world-class customer experiences faster, easier, and more efficiently.

Since its first launch, Katalon has experienced tremendous growth, serving more than 30,000 teams around the globe, many of which are in the Fortune Global 500, such as PwC, KPMG, Abbott, etc. Katalon is recognized as a top automation tool by prestigious review sites, such as G2, Gartner, Capterra, and IT Central Station.

Job Summary

We are seeking a Senior Software Engineer who will be a part of a cross-functional Agile team continuously developing & delivering Katalon Studio, an all-in-one test automation solution for Web, API, mobile, and desktop built for both beginners and expert testers. Within the testing community, Katalon Studio is seen as a growing powerhouse, which is further evidenced by being ranked a top automation tool in several reputable industry reports. To make it happen, your opportunities/responsibilities shall be:

  • Collaborate with the Product Manager and Team to develop product's new features and enhancements
  • Perform detailed technical analysis and design, so to break down the feature based on the high-level design and business requirements
  • Build code that meets the development standards for code style, design patterns, readability, maintainability and apply best practices for scaling;
  • Work with peer Engineers to grow the technical accountability of the system to ensure release product quality, security and performance.
  • Perform code review to ensure standards are applied consistently
  • Identify areas for improvement within the existing codebase and suggest solutions to improve;
  • Identify & contribute to internal engineering working groups to define and build internal libraries, tools, and frameworks for reusability and centralize practices across;
  • Ability to diagnose and troubleshoot the issues for supporting customer requests.
  • Support automation QAs and product specialists to maintain the demo system and write scripts using new Katalon features to test the applications.



  • Bachelor's degree in Computer Science, Engineering, or a related field;
  • Proficiency in Java programming for designing, developing, and maintaining; high-quality software applications. If you have a hands-on experience with Eclipse RCP,  it's a big plus;
  • Expertise in API development and Database design;
  • Familiarity with coding best practices (e.g., clean code, unit tests, design patterns);
  • A willingness to research and gain knowledge of automation frameworks (Selenium, Appium, Cypress, Playwright);
  • Strong grasp of Scrum and Agile methodologies;
  • Demonstrated organizational, analytical, and problem-solving skills;
  • Ability to mentor junior engineers and support team members;
  • "Can-Do" attitude and high sense of ownership;
  • Effective English communication skills.


  • Familiarity with cloud infrastructures like AWS and Kubernetes;
  • Experience with event-driven and message queue frameworks (RabbitMQ, Kafka);
  • A big plus on hands-on experience in using Generative AI technology and its techniques in software systems such as text generation with LLM models (GPT in OpenAI / Azure OpenAI, LLaMA, Titan, etc.), prompt engineering and retrieval-augmented generation framework;
  • Front-end technology proficiency (JavaScript / TypeScript);
  • Exposure to Katalon products;
  • Background in desktop / CLI application development;
  • Knowledge of deployment automation tools.


At Katalon, we bring together self-starting, open-minded, and talented people while actively promoting a transparent and growth-enabling working environment. But don’t just take our word for it. Take a better look below!

  • Total Remuneration: Satisfying your financial goals through competitive compensation and periodic performance bonuses.
  • Well-being & Work-life Balance: Staying healthy through comprehensive health plans, flexible work arrangements, and generous paid leaves.
  • Statutory Compliance: Labor compliance with local regulations that ensure employee security.
  • Work Facilities & Accommodation: Top-notch equipment, supportive allowances, and A-class facilities.
  • Diversity, Equity, Engagement, & Inclusion: Becoming part of a global team that celebrates differences, equal opportunity, and meaningful employee recognition.
  • Growth & Rewards: Thriving professionally through employee enablement, a culture of trust, and rewarding performance.

Katalon is proud to be an equal-opportunity employer. We care about our people and celebrate our differences. We want to work with talented, collaborative, and innovative people. We do not discriminate in hiring or any employment decision based on race, color, religion, national origin, age, sex (including pregnancy, childbirth, or related medical conditions), marital status, ancestry, physical or mental disability, genetic information, veteran status, gender identity or expression, sexual orientation, or other characteristics protected by law.