Roger D. Cook — Quality Assurance Professional

Approach

Systems Thinking: I approach testing with a message-passing mentality—tracing how data flows between components, identifying where breakdowns occur, and validating both expected behavior and failure modes. This perspective serves equally well for telecom protocols, mobile applications, and distributed systems.

Bottleneck Elimination: My focus is on identifying what slows down delivery—flaky tests, unautomatable procedures, or manual bottlenecks—and building solutions that stabilize workflows and accelerate feedback loops.

Skills

Test Automation

Selenium WebDriver
Cypress
Appium (Windows)
JUnit, xUnit, NUnit
REST API Test Suites (RestSharp)
Load/Performance: JMeter, LoadNinja

Languages & Querying

C# (.NET)
SQL (database validation)
Perl (scripting)
Tcl (legacy automation)
Shell/Bash

Manual Testing

Exploratory Testing
Boundary Value Analysis
Risk-Based Testing
Regression Suite Planning
Hardware-in-Loop Validation
RF Interface Testing

Analysis & Debugging

Network Protocol Analysis (Wireshark)
Traffic Interception (mitmproxy)
Root Cause Analysis for Intermittent Failures
Test Stabilization & Flaky Test Remediation
Parallel Test Execution Optimization

Platforms & Domains

Telecom Protocols (SS7, SONET)
Cellular Systems & RF Interfaces
Mobile: iOS, Android, Proprietary OS
Embedded Systems
Cloud Applications
Browser Compatibility Testing

Collaboration

Mentoring Junior Testers
Shift-Left Testing Practices
Technical Documentation & Reviews
Defect Tracking & Triage
Version Control (Git)
Virtualization Environments