Performance Tester with Gatling (f/m/x)

Nasze 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 required Mile widziane: Performance testing experience (JMeter, Python, Kubernetes), including mobile apps Familiarity with GitHub Copilot 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. Zakres obowiązków: 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 Oferujemy: Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People