Comprehensive Testing for Our PHP/React SaaS

We're in need of a seasoned QA professional who can conduct end-to-end testing of our SaaS application built on PHP and React. The primary focus will be on Functional, Usability and Performance testing.

Key Testing Areas:
- Functional Testing: Assess the software's functionalities to ensure they align with the required specifications.
- Usability Testing: Evaluate the user interface and overall user experience to ensure it's intuitive and user-friendly.
- Performance Testing: Determine the software's responsiveness, speed, scalability, and stability under varying conditions.

Critical Areas:
Our main concern is the Data Management aspect of the application.

Specific Features:
- Filters: Test the effectiveness and efficiency of data filters.
- Data Revelation: Assess the software's ability to reveal data appropriately and securely.

Ideal Skills and Experience:
- Extensive experience in software testing, particularly functional, usability and performance testing.
- Proven track record in testing SaaS applications.
- Proficient in PHP and React based applications.
- Strong understanding and experience in data management testing.
- Excellent attention to detail and strong analytical skills.