Senior Performance Test Engineer — Scale & Reliability Lead

We're looking for a Senior Performance Test Engineer to join our team in Madrid, Spain in a hybrid working mode. In this role, you will design, implement and execute performance testing and synthetic monitoring solutions, ensuring system scalability, stability and reliability for business-critical applications. You will work closely with development teams and stakeholders to identify performance bottlenecks, optimize application responsiveness and deliver actionable insights that drive continuous improvement across technology platforms.

La siguiente información ofrece un resumen de las habilidades, cualidades y cualificaciones necesarias para este puesto.
This position offers the opportunity to contribute as both a technical expert and trusted advisor, influencing testing strategies and strengthening the organization's observability and performance engineering capabilities.

Responsibilities

• Design, develop and execute performance and load tests for enterprise-grade applications and services
• Implement and maintain synthetic monitoring solutions to evaluate system availability and user experience
• Analyze performance test results and produce clear reports with optimization recommendations
• Review performance and monitoring code in Java, JavaScript or TypeScript for compliance with standards
• Act as a trusted advisor in defining performance testing strategies and monitoring best practices
• Identify performance bottlenecks across applications, APIs and infrastructure, recommending improvements
• Enhance test environments, automation frameworks and CI/CD integrations to support continuous testing
• Ensure test assets and processes remain scalable, maintainable and aligned with SDLC quality practices

Requirements

• Several years of hands-on experience in performance testing or performance engineering roles
• Proficiency in Playwright (Java, TypeScript) and Grafana k6 (JavaScript) for performance automation
• Experience integrating tests with CI/CD pipelines using GitLab, Jenkins or Bitbucket
• Strong understanding of performance engineering principles, APIs, cloud-native applications and networking
• Proven ability to communicate technical results and translate them into business-relevant insights
• Familiarity with monitoring and observability platforms such as Grafana, Prometheus, Dynatrace
• Knowledge of performance metrics, OpenTelemetry concepts, distributed tracing and E2E analysis
• Excellent communication, stakeholder collaboration and problem-solving skills
• Degree in Computer Science, Software Engineering or a related discipline
• Fluent English proficiency (B2 or higher)

Nice to have

• Experience using Exense Step for test execution
• Background in banking or financial services environments
• Exposure to container and cloud platforms such as Azure and Kubernetes

We offer

• Private health insurance
• EPAM Employees Stock Purchase Plan
• 100% paid sick leave
• Referral Program
• Professional certification
• Language courses

EPAM is a leading digital transformation services and product engineering company with 61,700+ EPAMers in 55+ countries and regions. Since 1993, our multidisciplinary teams have been helping make the future real for our clients and communities around the world. In 2018, we opened an office in Spain that quickly grew to over 1,450 EPAMers distributed between the offices in Málaga, Madrid and Cáceres as well as remotely across the country. Here you will collaborate with multinational teams, contribute to numerous innovative projects, and have an opportunity to learn and grow continuously.

• Why Join EPAM
• WORK AND LIFE BALANCE. Enjoy more of your personal time with flexible work options, 24 working days of annual leave and paid time off for numerous public holidays.
• CONTINUOUS LEARNING CULTURE. Craft your personal Career Development Plan to align with your learning objectives. Take advantage of internal training, mentorship, sponsored certifications and LinkedIn courses.
• CLEAR AND DIFFERENT CAREER PATHS. Grow in engineering or managerial direction to become a People Manager, in-depth technical specialist, Solution Architect, or Project/Delivery Manager.
• STRONG PROFESSIONAL COMMUNITY. xghoner Join a global EPAM community of highly skilled experts and connect with them to solve challenges, exchange ideas, share expertise and make friends.

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