What is a QA Engineer?
A QA Engineer is a software professional responsible for ensuring software quality through test design, execution, automation, and defect tracking. QA engineers validate that applications meet functional, performance, security, and usability requirements before release to customers.
In more detail
Modern QA engineering blends manual testing with automated test frameworks. Entry-level QA often focuses on manual exploratory testing and writing test cases. Senior QA engineers (sometimes called SDETs, Software Development Engineers in Test) build test automation frameworks, integrate testing into CI/CD pipelines, and drive shift-left quality practices.
According to the US Bureau of Labor Statistics, software quality assurance analysts and testers are grouped under software developers with faster-than-average projected growth. QA engineers are a natural fit for remote work since their daily tools (bug trackers, test management, CI systems) are all cloud-based.
How it works
- Writes test plans and test cases tied to product requirements.
- Executes manual tests and reports defects with reproducible steps.
- Builds automated tests using Selenium, Cypress, Playwright, or Appium.
- Integrates tests into CI pipelines (Jenkins, GitHub Actions).
- Performs regression, performance, accessibility, and security testing.
- Collaborates with developers, product, and support on quality metrics.
Related terms
Mini FAQ
QA is about preventing defects through process and planning. QC is about finding defects through inspection and testing. Most QA engineers do both.
Automation-focused QA engineers write code daily in Python, JavaScript, or Java. Manual QA uses tools but may not write production code.
India-based QA engineers typically cost $1,200 to $3,000 per month through managed staffing, depending on automation skills and seniority.