Web/App Test Engineer

Role Overview

Responsible for end-to-end quality assurance across Web and App (mobile) surfaces - combining automated and exploratory testing to ensure product stability, compatibility, and interaction experience from the user's perspective. The core requirement is cross-platform testing capability (Web + App), with the ability to design and maintain an automated testing system and to think deeply about troubleshooting and user-experience-oriented quality.

In one sentence: This role is the quality gatekeeper for Web/App products - someone who can write automation scripts, test interaction experiences, investigate data issues, and use engineering methods to replace manual testing with systematic automated quality coverage. Not a manual tester - a QA engineer with real coding ability.

Key Responsibilities

• Design and maintain comprehensive Web/App test cases and test plans covering functionality, compatibility, and interaction
• Develop and maintain UI/API automated tests using Java, Python, or JavaScript to ensure high coverage and reliability
• Combine automation and manual exploratory testing to validate user scenarios and discover potential experience issues
• Perform root cause analysis on test failures and production issues, and drive fixes to closure
• Identify blind spots in test coverage and continuously improve automation effectiveness
• Participate in testing for new features - define expected behaviors, system impact, and risk points from a user-experience perspective
• Conduct App compatibility testing across devices, OS versions, and screen sizes, as well as Web cross-browser and cross-resolution testing
• Participate in performance testing (page load time, App cold start / warm start, etc.) and ensure stability under high-concurrency and weak-network scenarios

Requirements

• Strong coding ability in at least one of Java, Python, or JavaScript (live coding assessment required)
• Extensive Web/App automation testing experience with tools such as Selenium, Appium, Playwright, etc.
• Solid understanding of Web/App testing methodologies and automation framework design
• Proficiency in SQL for data validation and issue troubleshooting
• Proven root cause analysis ability to solve complex quality problems
• Familiarity with Web front-end technologies (HTML/CSS/JS) and mobile platform fundamentals (Android/iOS architecture and characteristics)
• Experience building testing tools, platforms, or quality infrastructure

Ideal Candidate Profile

Background:

• 1-5 years of QA or test development experience, including at least 1 year of Web or App automation testing
• Strong coding skills - able to write code from scratch, not just scripts
• Proficient in SQL for independent data validation and troubleshooting
• Hands-on mobile or Web testing experience

Core Competencies:

• Automation capability: Can design and develop automation frameworks, not just use existing tools
• Root cause analysis: Can trace test failures or production issues back to their root cause
• SQL & data validation: Can write complex SQL to verify data consistency and troubleshoot data-related bugs
• Cross-platform understanding: Understands Web/App architecture, including front-end/back-end interaction, network requests, cache mechanisms, and WebView
• UX sensitivity: Can identify experience issues from the user's perspective, not just whether functionality works
• Test tooling: Experience building test platforms, tools, or quality infrastructure
• Collaboration drive: Can push developers to fix issues rather than passively waiting

Soft Skills:

• Rigorous and detail-oriented
• "Destructive thinking" mindset - adept at finding system weaknesses
• Strong communication - bridges developers and product managers
• Quality ownership mentality - treats quality as personal responsibility

Bonus Points

• Payment, transaction, or financial system QA experience
• AI tooling usage experience
• Crypto / Web3 industry background
• Hands-on App compatibility testing experience using cloud device platforms such as Testin or WeTest
• Weak-network testing experience using tools such as Charles or Fiddler