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Job Summary
We are looking for a skilled Performance Testing Engineer / Performance Engineering Specialist with strong experience in performance testing, monitoring, application diagnostics, and cloud-based performance engineering. The ideal candidate should have hands-on experience with tools such as JMeter, K6, LoadRunner, AppDynamics, ELK, Grafana, and strong knowledge of Java/J2EE monitoring, thread dump analysis, heap dump analysis, garbage collection concepts, and cloud platforms such as Pivotal Cloud and AWS.
The role requires strong analytical, problem-solving, stakeholder communication, and presentation skills, with the ability to identify performance bottlenecks and recommend architectural or design-level improvements.
Job Description
Core Responsibilities
- Design, develop, and execute performance testing strategies for applications and services.
- Conduct performance, load, stress, endurance, disaster recovery, and scalability testing.
- Create and execute test scripts using tools such as JMeter, K6, and LoadRunner.
- Monitor application performance using tools such as AppDynamics, ELK/Kibana, Elasticsearch, and Grafana.
- Analyze application behavior under load and identify bottlenecks across application, database, infrastructure, and network layers.
- Perform Java/J2EE application monitoring, including:
- Thread dump analysis
- Heap dump analysis
- Garbage collection analysis
- JVM tuning recommendations
- Work closely with development, architecture, infrastructure, and DevOps teams to resolve performance issues.
- Prepare performance test reports, dashboards, observations, and recommendations for stakeholders.
- Support performance tuning and provide solution recommendations for architectural improvements.
- Develop negative test scenarios and validate application behavior under failure conditions.
- Support DR testing, endurance testing, and stress testing activities.
- Apply service virtualization concepts to simulate dependent systems where required.
- Collaborate with business and technical stakeholders to understand performance requirements and SLAs.
- Present findings, risks, and improvement recommendations to leadership and technical teams.
Employees at all levels are expected to:
- Strong understanding of performance testing and performance engineering concepts.
- Hands-on experience with performance testing tools such as:
- Apache JMeter
- K6
- LoadRunner
- Good experience in Java/J2EE application monitoring and diagnostics.
- Strong knowledge of:
- Thread dump analysis
- Heap dump analysis
- Garbage collection concepts
- JVM memory management
- Experience in monitoring and dashboarding tools such as:
- AppDynamics
- ELK Stack
- Kibana
- Elasticsearch
- Grafana
- Good understanding of cloud platforms and cloud-native application performance concepts, preferably:
- Pivotal Cloud Foundry
- AWS Cloud
- Experience in executing:
- Load testing
- Stress testing
- Endurance testing
- DR testing
- Negative scenario testing
- Ability to analyze performance metrics and provide actionable recommendations.
- Strong stakeholder communication, documentation, and presentation skills.
- Ability to recommend architectural changes to improve system performance and scalability.
- Understanding of service virtualization concepts.
Disclaimer:
- This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.
We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That's why we provide an array of options, expert guidance and always-on tools that are personalized to meet the needs of your reality—to help support you physically, financially and emotionally through the big milestones and in your everyday life.
Please visit the benefits summary on our careers site for more details.
Education
Bachelor's Degree
While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.
Certifications (if applicable)
Relevant Work Experience
5-7 Years
Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.