Techstra Solutions · 23 hours ago
Quality Assurance Engineer (Mid-Level) – Legacy .NET Systems
Pittsburgh, PA
Full-time
Onsite
Mid, Senior Level, Lead/Staff
8+ years expTechstra Solutions is seeking a mid-level Quality Assurance Engineer to support and evolve a mission-critical, legacy .NET application that has been in production for over 20 years. This role blends hands-on testing execution with strategic quality thinking, focusing on ensuring platform stability while enabling incremental modernization.
Cloud ComputingConsultingDevOpsManagement Consulting
No H1B
Responsibilities
Design, execute, and maintain manual and automated test cases for legacy .NET applications (WebForms, WinForms, WCF, early MVC)
Perform functional, regression, integration, and system testing, with a focus on protecting critical business workflows
Validate fixes in areas with limited or no existing test coverage
Conduct data validation and backend testing using SQL Server
Investigate defects by reproducing issues, analyzing logs, and collaborating closely with development teams
Support release testing, production validation, and post-release verification activities
Assess existing testing practices and identify pragmatic, incremental improvements appropriate for a legacy environment
Help define and execute risk-based testing strategies, focusing effort on high-impact and high-change areas
Partner with developers to introduce or expand automated regression coverage where feasible
Advocate for testability improvements in legacy code during enhancements and refactoring efforts
Contribute to test documentation, knowledge sharing, and tribal knowledge capture
Provide input into modernization initiatives (e.g., strangler patterns, service extraction, CI/CD enablement)
Qualification
Required
8–10 years of experience in software testing or quality engineering
Hands-on experience testing .NET applications, particularly older or legacy systems
Strong understanding of manual testing fundamentals and test design techniques
Experience with test automation frameworks such as Selenium, Playwright, SpecFlow, NUnit, xUnit, or MSTest
Solid SQL skills for data validation and troubleshooting
Familiarity with source control systems (e.g., Git, TFS/Azure DevOps)
Experience working in environments with limited documentation and significant technical debt
Strong analytical and problem-solving abilities
Comfortable asking questions, challenging assumptions, and investigating why systems behave as they do
Ability to balance speed, risk, and quality when supporting release decisions
Clear written and verbal communication skills, especially when explaining risk to non-technical stakeholders
Self-directed and comfortable working independently while collaborating within established teams
Legally authorized to work in the United States now and in the future without sponsorship
Company
Techstra Solutions
Techstra Solutions is a consulting firm for digital and talent transformation.
51-200 employees
Funding
Current Stage
Growth StageLeadership Team
Larry Honig
Chief Digital Officer
Recent News
Business Journals
2022-04-01
Company data provided by crunchbase