Muhammad S.
QA Engineer & Penetration Tester | Web, API & Automation
Software Quality Assurance & Penetration Testing | Manual, Automation & Security With 7+ years of experience in software quality engineering, I help businesses test applications, uncover defects, identify security vulnerabilities, and deliver reliable software. My expertise covers both functional quality and application security, from requirements validation and automated regression testing to vulnerability assessments and penetration testing. Software Quality Assurance Manual, Functional, Regression & Sanity Testing Test Case Design, Execution & Defect Tracking UI/UX, Cross-Browser & Responsive Testing Web, Mobile & API Testing Test Automation with Playwright & Selenium End-to-End Testing, UAT & Release Validation Cybersecurity & Penetration Testing Web Application & API Penetration Testing Vulnerability Assessment & Security Audits OWASP Top 10 & Business Logic Testing Authentication, Authorization & Access Control Network Security Assessment Security Misconfiguration & Risk Analysis Vulnerability Reporting, Remediation & Retesting Tools & Technologies Playwright, Selenium, Postman, Burp Suite, OWASP ZAP, Acunetix, Nmap, Azure DevOps, and other testing tools appropriate to the project. What You Can Expect Clear test documentation, reproducible defects, verified security findings, actionable recommendations, and consistent communication with development teams. My approach combines a QA engineer's attention to application behavior with a security tester's focus on identifying weaknesses and validating risks. Let's discuss your project. Share your application, testing requirements, or security concerns, and I'll recommend the most practical assessment approach
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $8.1k
Billed in all: $209,494$209k
$901 in the last 6 months
Across 11 contracts
Across 91 contracts
Earnings, last 30 days
Skill rankings: Top 6% in Blockchain Security
Ranked by MRR among everyone on Upwork with the skill.
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