Performance Tester with Gatling (f/m/x)

O projekcie: We are looking for a Performance Engineer with Gatling for a project in the fueling & EV retail industry. You’ll join a small but experienced team that supports various internal projects and helps teams build fast and stable systems. A big advantage is the well-structured testing strategy and ongoing collaboration with developers. You’ll work on solutions related to EV charging, loyalty systems, mobile applications, and retail — in an environment where performance and scalability truly matter. Wymagania: - Minimum 5 years of professional experience in software testing, including performance testing- Solid understanding of performance engineering concepts and optimization (architectural patterns, databases, microservices, queues, JVM tuning)- Solid understanding of performance testing methodologies, strategies, and workload profiles- Hands-on experience with Gatling (must-have) and programming skills in Java, including a good understanding of OOP principles and best practices (SOLID, DRY, YAGNI, KISS)- Previous work with cloud platforms such as Azure or AWS- Practical experience with containerization and orchestration tools, especially Docker- Familiarity with observability and monitoring tools such as Grafana, Kibana, InfluxDB, Prometheus, Azure Application Insights, and Amazon CloudWatch- Experience working with CI/CD pipelines (e.g., GitHub Actions, Azure DevOps) and version control systems such as Git- English proficiency at a minimum B2 level- Fluent Polish required- Residing in Poland requiredNice-to-have requirements - Performance testing experience (JMeter, Python, Kubernetes), including mobile apps- Familiarity with GitHub Copilot Codzienne zadania: - Developing, maintaining, and deploying performance testing scripts, load generators, and executing performance tests - Defining performance testing scope, goals, and success criteria - Gathering and refining performance requirements with stakeholders - Analyzing performance results on both the client and server sides - Identifying bottlenecks using observability tools like Azure Application Insights, Amazon CloudWatch, and Grafana - Preparing clear reports with insights and recommendations - Supporting and guiding development teams on performance best practices while promoting a shift-left approach to performance testing - Helping define and improve performance engineering standards