Principal SDET - Performance Test Engineer

Location: Lakewood, CO
Salary: $140,000.00 USD Annually - $163,100.00 USD Annually
Description:
Job Title: Principal SDET - Performance Test Engineer

Location: Lakewood, CO, 80201

Employment Type: Full-time

Industry: Medical Devices

Job Description

The Principal SDET - Performance Test Engineer plays a vital role in our medical device company, driving innovation and improving patient outcomes through life-saving technology. This position involves close collaboration with architects and team leaders, providing technical leadership and driving organizational change.

Core responsibilities include performance testing strategy and planning, automated script development, test execution, result analysis, and metrics reporting for TBCT software systems developed within the R&D department. The role ensures performance requirements are exceeded and business effectiveness is maximized.

This role requires independent judgment, strategic thinking, and hands-on technical expertise. Collaboration with internal teams, external partners, consultants, and stakeholders is essential.

Essential Duties

• Conduct performance testing across software products, including embedded medical devices and web applications
• Lead technical development and effectiveness of the performance testing group
• Track and report performance metrics (response times, error rates, throughput, CPU/memory usage, latency)
• Contribute to codebases and provide Agile team leadership
• Design efficient solutions through thoughtful planning
• Collaborate with architects to optimize performance, scalability, and reliability
• Design and execute non-functional test scenarios (load, scalability, reliability, endurance)
• Use data analytics to understand product usage patterns
• Implement and maintain automation tools and frameworks
• Advise on feasibility and improvements for test automation
• Apply expert-level computer science fundamentals (OOP, design patterns, data structures)
• Use source code management tools effectively
• Support performance testing across all levels of the test pyramid
• Coordinate with third-party partners for performance testing
• Enhance CI/CD techniques across teams
• Train and coach on automated performance testing and build pipelines
• Design and manage dynamic test data creation
• Organize and control the software testing process
• Create training documentation and lead knowledge transfer sessions
• Troubleshoot performance testing environment setup
• Collaborate with engineers and architects to solve complex problems
• Review and approve code/test pull requests
• Participate in all levels of testing
• Lead discussions on appropriate testing levels
• Demonstrate mastery of performance testing techniques

Other Responsibilities

• Provide leadership and direction for the performance testing group
• Collaborate with regulatory and quality teams to uphold standards
• Supervise SQA/testing activities across teams, emphasizing scalable and reusable practices

Minimum Qualifications

Education: Bachelor's degree in Computer Science, Engineering, or equivalent experience

Experience: Minimum 8 years in SDET roles, with at least 5 years in performance testing

Skills:

• Experience with APIs, microservices, and cloud platforms (Azure, AWS, Google Cloud Platform)
• Strong understanding of HTTP protocols, web technologies, REST APIs
• Familiarity with Prometheus, Grafana, and other performance monitoring tools
• Proficient in .NET C#, C++, Python
• Skilled in performance testing tools like JMeter
• Strong analytical skills for interpreting test results and diagnosing issues
• Experience implementing efficient testing solutions
• Expertise in automated performance testing across all test levels
• Quick learner with urgency and enthusiasm
• Excellent communication skills for technical and non-technical audiences
• Collaborative and team-oriented mindset
• Encourages learning and adoption of new technologies
• Motivates self and others to achieve results
• Provides helpful information across the organization
• Navigates challenges constructively
• Makes high-quality decisions under uncertainty
• Balances stakeholder interests and resolves conflicts productively

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