We are looking for a highly skilled Senior Performance Testing Engineer to spearhead the design, execution, and analysis of performance testing strategies for scalable, high-performance systems.

In this role, you will develop and optimize performance testing frameworks, identify and resolve bottlenecks in web applications and APIs, and collaborate with cross-functional teams to ensure our technology meets the highest standards of reliability and scalability.

 

Responsibilities

• Provide technical expertise in defining and implementing performance testing strategies, frameworks, and plans
• Conduct comprehensive performance, load, stress, and endurance testing for web applications and backend APIs
• Develop realistic workload models based on architecture and production usage patterns
• Analyze and interpret performance test results using tools like k6 and sitespeed.io, identifying key performance metrics
• Investigate and resolve performance bottlenecks across application, infrastructure, database, and network layers
• Integrate performance test suites into CI/CD pipelines to ensure ongoing scalability and reliability
• Utilize Grafana with InfluxDB to capture and visualize performance metrics for trend analysis and reporting
• Monitor system resource utilization (CPU, memory, disk, network) during tests and identify misconfigurations
• Automate performance testing processes, including test execution and reporting workflows, using scripting or programming tools like TypeScript or PowerShell
• Collaborate with stakeholders to identify performance risks early and propose actionable solutions
• Lead or contribute to performance tuning initiatives, ensuring the system meets required SLAs and scalability requirements
• Mentor and guide team members to foster a performance-first mindset and skills development

 

Requirements

• Proven experience of over 3 years in performance testing of web applications, APIs, and backend services
• Strong knowledge of performance testing methodologies and best practices
• Hands-on expertise with k6; familiarity with sitespeed.io is a plus
• Proficiency in analyzing test outcomes with metrics like percentiles, distributions, and system resource utilization
• Experience using Grafana and InfluxDB for performance monitoring, visualization, and reporting
• Knowledge of SQL with capabilities in query performance analysis and optimization
• Competency in diagnosing and addressing bottlenecks across application, network, OS, and database layers
• Understanding of infrastructure configurations, load balancing, and system monitoring tools
• Skills in scripting or programming (e.g., TypeScript, PowerShell) for extending performance tests and custom automation
• Experience integrating tests into CI/CD workflows with automated reporting tools
• Strong communication skills in business English (B2 level or higher) to present findings to both technical and non-technical audiences

 

Nice to have

• Familiarity with Prometheus for advanced monitoring and alerting
• Experience with testing and optimization in REST and SOAP-based services
• Working knowledge of sitespeed.io for performance analysis and insights
• Experience mentoring team members and promoting a performance-focused culture

 

We offer

• International projects with top brands
• Work with global teams of highly skilled, diverse peers
• Healthcare benefits
• Employee financial programs
• Paid time off and sick leave
• Upskilling, reskilling and certification courses
• Unlimited access to the LinkedIn Learning library and 22,000+ courses
• Global career opportunities
• Volunteer and community involvement opportunities
• EPAM Employee Groups
• Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn