A software engineer with a QA focus—strong coding skills plus deep testing expertise. Must be able to,

Write automated tests using Python, Java, or JavaScript
Build and maintain testing frameworks
Perform load, stress, and performance testing
Simulate large volumes of data and users
Work with tools like JMeter, Locust, Gatling, k6, Selenium, Playwright
Validate system scalability and concurrency
Debug performance bottlenecks and report findings to developers
More specialized in:

Stress testing
Load testing
Volume testing
Endurance testing
System profiling
Identifying bottlenecks (CPU, memory, DB queries, concurrency issues)
This role will help with:

Automated functional testing
Regression testing to prevent repeated bugs
API testing
Load & stress testing of multiprocessing / multithreaded code
Testing before releases so issues don’t hit production