Senior Performance Engineer

EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.
We are seeking a Senior Performance Engineer to define, implement, and execute the performance engineering strategy for our applications and supporting services. This role will be key to validating Non-Functional Requirements (NFRs), including response time, throughput, scalability, stability, and resource utilization.
The engineer will work closely with development, DevSecOps, architecture, and product teams to identify performance risks early, build automated performance testing capabilities, analyze system behavior under realistic workloads, and ensure applications meet agreed performance and scalability targets before production release.
Responsibilities
Define the overall performance testing and performance engineering strategy based on application architecture, business usage patterns, and NFRs
Translate business and technical NFRs into measurable performance acceptance criteria, test scenarios, workload models, and success thresholds
Design and execute load, stress, spike, endurance/soak, scalability, and capacity tests across web applications, APIs, and backend services
Develop and maintain automated performance test scripts and reusable performance testing frameworks
Test the performance of HTTP/REST and gRPC-based APIs and services
Establish realistic workload models based on expected user volumes, concurrency, transaction patterns, and production-like behavior
Analyze performance across the full application stack, including frontend, APIs, services, databases, caching layers, infrastructure, and third-party dependencies
Identify performance bottlenecks and conduct root-cause analysis using application, infrastructure, database, and observability data
Validate application behavior under normal, peak, and sustained workloads
Evaluate key performance indicators such as response time, latency, throughput, error rate, concurrency, CPU, memory, network utilization, and database performance
Integrate performance tests into CI/CD pipelines to support continuous performance validation and detect regressions early
Establish performance baselines and track performance trends across releases
Partner with software engineers and DevSecOps teams to recommend and validate performance optimizations
Produce clear performance test reports, identify risks, and communicate whether agreed NFRs and release criteria have been met
Support capacity planning and provide recommendations for application and AWS infrastructure scalability
Requirements
3+ years of performance testing/performance engineering experience with production web applications and distributed systems
Proficiency in performance testing tools such as k6, JMeter, and Gatling
Familiarity with Locust or similar load testing tools
Strong understanding of load, stress, and spike testing
Expertise in endurance/soak, scalability, and capacity testing
English proficiency at an Upper-Intermediate level (B2) or higher
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
EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.

Skills
AWS, CI/CD, JMeter

Experience
3+ yrs

Work arrangement
Yes