SDET Engineer: C#, Selenium & API Testing

Compunnel, Inc.; Plano (TX); On-site; USD 90,000 - 120,000; Full time

Job summary

Compunnel, Inc. in Plano, TX seeks a Software Development Engineer in Test (SDET) for a contract engagement.

You will design, develop, and maintain automated testing across web, API, service, and end-to-end layers, applying strong C# programming and Selenium WebDriver expertise to raise quality and release readiness. Collaborate with development and cross-functional teams to build robust automation frameworks, enhance test coverage, and implement observability for production telemetry.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• Experience in Mortgage, Financial Services, Lending, or regulated industries.
• Experience with performance, resiliency, security, accessibility, or contract testing.
• Experience using observability tools and production telemetry for troubleshooting and improving test coverage.
• Experience with AI-assisted testing tools for test design, automation, or defect analysis.
• Experience with distributed systems, microservices, or event-driven architectures.

Responsibilities

• Design, develop, and maintain automated testing solutions across web, API, service, integration, and end-to-end application layers.
• Collaborate with development and cross-functional teams to improve software quality, automation reliability, and release readiness.
• Build and enhance automation frameworks and expand test coverage across systems.

Skills

C#

Selenium WebDriver

API automation

Automation framework design

Quality engineering

Education

Bachelor's degree in Computer Science or Software Engineering

Tools

Observability tools

AI-assisted testing tools

Performance testing tools

Job description

Compunnel, Inc. in Plano, TX seeks a Software Development Engineer in Test (SDET) for a contract engagement.

You will design, develop, and maintain automated testing across web, API, service, and end-to-end layers, applying strong C# programming and Selenium WebDriver expertise to raise quality and release readiness. Collaborate with development and cross-functional teams to build robust automation frameworks, enhance test coverage, and implement observability for production telemetry.