Senior Performance Test Engineer

🏢 Summary: Hybrid Senior Performance Test Engineer role focused on building automated performance testing frameworks and strategies for scalable, resilient digital products. The position uses JavaScript and k6 to test APIs, web applications, and distributed systems, embed testing in CI/CD, and drive performance improvements across engineering teams. 🗂️ Requirements: JavaScript (ES6+) proficiency, Automated test framework development experience, k6 performance testing experience, Load, stress, scalability testing and performance tuning knowledge, REST API and GraphQL API testing experience, CI/CD test integration experience, Git collaborative workflow experience, Docker and Kubernetes experience, Experience with AWS, Azure, or GCP, Observability and monitoring tool experience 📃 Skills: JavaScript, k6, REST, GraphQL, GitHubActions, GitLabCI, AzureDevOps, Jenkins, Git, Docker, Kubernetes, AWS, Azure, GCP, Grafana, Prometheus, ApplicationInsights 🏢 Description: About the Role We are looking for a Senior Performance Test Engineer to join our engineering team and help us build highly scalable, reliable, and resilient digital solutions. In this role, you will design and implement advanced performance testing strategies, develop automation frameworks, and work closely with engineering teams to identify bottlenecks and improve system performance. You will play a key role in embedding performance engineering practices into the software development lifecycle, enabling teams to deliver high-quality products that perform reliably at scale. This is an excellent opportunity for an experienced engineer who enjoys solving complex technical challenges, working with modern cloud technologies, and influencing engineering practices across distributed teams. Key Responsibilities - Design, develop, and maintain performance testing frameworks and automation solutions using JavaScript (ES6+). - Create and execute performance, load, stress, and scalability testing strategies for modern applications. - Develop and maintain performance test scenarios using k6. - Test and analyze the performance of REST APIs, GraphQL APIs, web applications, and distributed systems. - Identify performance bottlenecks and provide actionable recommendations for optimization. - Collaborate with developers, architects, DevOps, and product teams to improve system scalability and reliability. - Integrate performance testing into CI/CD pipelines and engineering workflows. - Support performance monitoring and analysis using observability platforms. - Contribute to performance engineering standards, best practices, and continuous improvement initiatives. - Work effectively with global, distributed engineering teams and communicate technical findings to both technical and non-technical stakeholders. Required Skills & Experience - Strong proficiency in JavaScript (ES6+). - Proven experience building automated test frameworks and reusable testing solutions. - Hands-on experience with k6 performance testing. - Strong understanding of performance engineering methodologies, including load testing, stress testing, scalability testing, and performance analysis and tuning. - Experience testing modern web applications and APIs, including REST APIs and GraphQL APIs. - Experience integrating automated tests into CI/CD pipelines using GitHub Actions, GitLab CI, Azure DevOps, or Jenkins. - Strong experience with Git and collaborative software development workflows. - Solid understanding of software engineering principles and modern development practices. - Excellent analytical and problem-solving skills. Cloud & Infrastructure Experience - Experience working with Docker and containerized environments. - Experience working with Kubernetes and cloud-native architectures. - Experience with at least one major cloud platform: AWS, Microsoft Azure, or Google Cloud Platform (GCP). - Experience with observability and monitoring tools such as Grafana, Prometheus, Application Insights, or similar monitoring and analytics platforms. Soft Skills & Mindset - Strong communication and stakeholder management skills. - Ability to influence technical decisions and drive improvements without direct authority. - Passion for quality engineering, automation, and developer enablement. - Continuous learning mindset and curiosity about emerging technologies. - Ability to collaborate effectively across international and distributed teams. - Comfortable working independently while contributing to a highly collaborative engineering culture.

🏢 Summary: Senior Performance Test Engineer role focused on building and integrating performance testing practices for digital fleet management platforms in an Agile environment. The position involves designing automated performance test strategies, analyzing system scalability and reliability, and embedding performance testing into CI/CD pipelines. Hybrid work model based in Warsaw. 🗂️ Requirements: 5+ years of experience in performance engineering or testing, Experience with LoadRunner, Experience with Apache JMeter, Experience with Gatling, Knowledge of performance testing methodologies, Knowledge of workload modeling, Knowledge of capacity planning, Experience analyzing application logs and system metrics, Experience identifying performance bottlenecks, Experience with Dynatrace, Experience with Elasticsearch, Experience integrating performance testing into CI/CD pipelines, Fluent Polish, Fluent English 📃 Skills: LoadRunner, JMeter, Gatling, Dynatrace, Elasticsearch, Grafana, Prometheus, CI/CD, APM, Agile 🏢 Description: We are looking for an experienced Senior Performance Test Engineer to join a dynamic Agile team responsible for developing and supporting digital fleet management platforms used across multiple countries. In this role you will ensure the scalability, reliability, and efficiency of our digital platforms throughout the entire software delivery lifecycle. You will collaborate closely with Product Teams, Cloud Engineering, and QA communities to embed performance best practices into delivery teams and support the industrialization and standardization of performance testing across the organization. The role is based in Warsaw and offers a hybrid working model. Your tasks Designing and implementing performance testing strategies aligned with product architecture Integrating performance testing into CI/CD pipelines to enhance delivery efficiency Defining performance acceptance criteria and non-functional requirements (NFRs) Developing and maintaining automated load, stress, endurance, and scalability test scenarios Analyzing application and infrastructure behavior under load to identify performance bottlenecks Collaborating with engineering teams to improve system scalability, resilience, and overall performance Defining, measuring, and monitoring key performance indicators (KPIs), including latency, throughput, response times, and resource utilization Partnering with Operations and Site Reliability Engineering (SRE) teams to validate system stability and production readiness Developing reusable test assets, datasets, CI/CD pipelines, and automation templates Requirements Minimum 5 years of experience in performance engineering or testing Hands-on experience with performance testing tools such as LoadRunner, Apache JMeter, and Gatling Strong understanding of performance testing methodologies, workload modeling, and capacity planning Experience analyzing application logs, system metrics, and identifying performance bottlenecks Familiarity with application performance monitoring (APM) tools such as Dynatrace and Elasticsearch Experience integrating performance testing into CI/CD pipelines is a strong advantage Fluent Polish and English Nice-to-have requirements Familiarity with Grafana and Prometheus

🏢 Summary: The offer is for an experienced Performance Tester to deliver performance testing projects for the banking and financial sector. The role focuses on evaluating, analyzing and optimizing the performance, scalability and stability of high-availability systems used by thousands of users. The position involves close collaboration with development and infrastructure teams to identify bottlenecks and improve system efficiency. 🗂️ Requirements: Minimum 3–4 years of experience as Performance Tester or similar role, Experience in designing and executing performance tests, Practical knowledge of JMeter, LoadRunner, Gatling or NeoLoad, Ability to analyze logs, metrics and test results, Knowledge of web application architecture and distributed systems, Experience with databases and SQL, Knowledge of REST API and integration services, Ability to identify performance issues at application and infrastructure level, Experience with Jira and Confluence, English level B2–C1 📃 Skills: JMeter, LoadRunner, Gatling, NeoLoad, SQL, REST, Jira, Confluence, Grafana, Prometheus, Dynatrace, AppDynamics, Splunk, AWS, Azure, GCP, Docker, Kubernetes, Kafka 🏢 Description: O projekcie Poszukujemy doświadczonego Performance Testera do realizacji projektów dla sektora bankowego i finansowego. Osoba na tym stanowisku będzie odpowiedzialna za ocenę wydajności, skalowalności oraz stabilności aplikacji i systemów biznesowych wykorzystywanych przez tysiące użytkowników. Jeżeli interesują Cię testy wydajnościowe, analiza wydajności systemów oraz optymalizacja aplikacji działających w środowiskach o wysokiej dostępności – zapraszamy do aplikowania. Twój zakres obowiązków Planowanie, projektowanie i realizacja testów wydajnościowych Przygotowywanie scenariuszy testowych dla testów obciążeniowych, wydajnościowych, stresowych i długotrwałych Analiza wydajności aplikacji, baz danych oraz systemów integracyjnych Identyfikacja wąskich gardeł oraz rekomendowanie działań optymalizacyjnych Współpraca z zespołami developerskimi, architektami oraz administratorami infrastruktury Monitorowanie wykorzystania zasobów podczas testów Przygotowywanie raportów oraz rekomendacji po przeprowadzonych testach Wsparcie procesów wdrożeniowych i optymalizacyjnych Tworzenie oraz utrzymanie dokumentacji testowej Nasze wymagania Minimum 3–4 lata doświadczenia na stanowisku Performance Testera lub pokrewnym Doświadczenie w projektowaniu i realizacji testów wydajnościowych Znajomość narzędzi takich jak JMeter, LoadRunner, Gatling lub NeoLoad Umiejętność analizy logów, metryk oraz wyników testów Znajomość zagadnień związanych z architekturą aplikacji webowych i systemów rozproszonych Doświadczenie w pracy z bazami danych oraz SQL Znajomość REST API i usług integracyjnych Umiejętność identyfikowania problemów wydajnościowych na poziomie aplikacji i infrastruktury Doświadczenie w pracy z Jira oraz Confluence Znajomość języka angielskiego na poziomie B2–C1 Mile widziane Doświadczenie z narzędziami monitoringu (Grafana, Prometheus, Dynatrace, AppDynamics, Splunk) Znajomość środowisk chmurowych AWS, Azure lub GCP Doświadczenie w testowaniu architektury mikroserwisowej Znajomość Docker i Kubernetes Certyfikat ISTQB Performance Testing lub ISTQB Foundation Level Doświadczenie w sektorze bankowym lub finansowym Znajomość Apache Kafka lub systemów kolejkowych Oferujemy Udział w projektach dla renomowanych instytucji bankowych i finansowych Możliwość pracy zdalnej lub hybrydowej Elastyczne godziny pracy Stabilną współpracę przy długoterminowych projektach Możliwość rozwoju kompetencji w obszarze Performance Testing i Quality Engineering Dostęp do nowoczesnych narzędzi testowych oraz środowisk technologicznych Współpracę z doświadczonymi ekspertami IT Realny wpływ na wydajność i jakość kluczowych systemów biznesowych Atrakcyjne wynagrodzenie adekwatne do doświadczenia i kompetencji Jeżeli chcesz rozwijać swoje kompetencje w obszarze testów wydajnościowych, uczestniczyć w zaawansowanych projektach technologicznych oraz odpowiadać za jakość systemów wykorzystywanych przez miliony użytkowników – zapraszamy do aplikowania.

🏢 Summary: Remote (later hybrid in Warsaw) Senior Load Test Engineer role focused on designing, executing, and automating performance testing for large-scale production systems. The position involves identifying bottlenecks, analyzing metrics, and integrating load tests into CI/CD pipelines to ensure platform stability and scalability. You will work closely with backend teams to maintain high performance under heavy user traffic. 🗂️ Requirements: 5+ years performance and load testing experience, Experience with large production systems, Proficiency with k6, Gatling, JMeter, or Locust, Ability to create complex load testing scripts from scratch, Strong understanding of backend systems and databases, Knowledge of infrastructure behavior under heavy load, Ability to analyze metrics from monitoring tools, Knowledge of HTTP, WebSockets, real-time protocols, Experience testing APIs under load, Experience with CI/CD pipeline integration, Proficiency with Git 📃 Skills: k6, Gatling, JMeter, Locust, Grafana, Datadog, NewRelic, HTTP, WebSockets, CI/CD, Git, APIs, Databases 🏢 Description: Please note: Remote mode but later hybrid in Warsaw Position Overview We are looking for a Senior Load Test Engineer who is passionate about performance testing. You understand how systems work when many users use them at the same time. You know how to find problems before real users experience them. You can clearly explain what is wrong and why it needs to be fixed. You work independently, manage your testing process from start to finish, and care about keeping our platform fast and stable as it grows. Key Responsibilities Plan and run load, stress, spike, and long-running tests on important parts of our platform. Study the results and find exactly where and why performance becomes worse. Work closely with backend engineers to understand the system and identify the real bottlenecks. Create and maintain performance test scripts that can be reused, stored in version control, and easily updated when the product changes. Add performance tests to CI/CD pipelines so problems can be detected early. Set performance goals and limits together with engineering and product teams. Watch how the platform behaves under load using monitoring tools and connect metrics with test results. Write clear reports and give practical recommendations to engineering teams. Qualifications 5+ years of practical experience with performance and load testing for large production systems. Strong experience with tools such as k6, Gatling, JMeter, or Locust, including creating complex scripts from the beginning. Good understanding of backend systems, databases, and how infrastructure behaves under heavy load. Ability to read and understand metrics from tools like Grafana, Datadog, New Relic, or similar. Good knowledge of HTTP, WebSockets, and real-time communication protocols. Experience testing APIs under load, including authentication flows, many users at the same time, and stateful scenarios. Familiar with CI/CD pipelines and adding performance tests to automated build processes. Comfortable using Git and working in agile engineering teams. Soft Skills Naturally curious — you like to understand why a system behaves in a certain way under pressure. Strong analytical thinking — you can review many metrics and quickly find the most important problem. Good communication — you can explain complex performance issues clearly to both developers and product managers. Self-motivated — you do not wait for someone to tell you there is a problem; you actively look for it.

🏢 Summary: Offer for a Performance Test Automation Engineer responsible for designing and executing automated non-functional and performance tests for international projects. The role focuses on ensuring quality and system performance through test automation, results analysis, and collaboration with Agile Scrum teams. The position also involves maintaining and enhancing existing automation frameworks. 🗂️ Requirements: Proven software development experience, Proficient Java knowledge, Minimum 4 years experience in test automation, Experience with web and REST-based solutions testing, Strong experience in non-functional and performance testing, Practical experience with JMeter, Knowledge of test automation tools and frameworks, Experience with CI/CD tools, Proficiency with Git version control, ISTQB Foundation Level knowledge, Basic SQL query experience, Experience working with XML, CSV, JSON, Fluent Polish language, Residence in Poland 📃 Skills: Java, JMeter, Selenium, Maven, RestAssured, Postman, Jenkins, Bamboo, Git, SQL, XML, CSV, JSON, BDD, Gherkin, REST 🏢 Description: Poszukujemy osoby na stanowisko Performance Test Automation Engineer, która dołączy do naszego zespołu i będzie wspierać projekty dla międzynarodowych klientów. Będziesz odpowiedzialny za zapewnienie wysokiej jakości i wydajności dostarczanych rozwiązań poprzez projektowanie i wykonywanie zautomatyzowanych testów niefunkcjonalnych oraz aktywną współpracę ze zwinnymi zespołami dostarczającymi. Twoje zadania Projektowanie i wdrażanie zautomatyzowanych skryptów testów wydajnościowych i niefunkcjonalnych Analiza wyników testów i identyfikacja defektów, w tym aktualizacja skryptów testowych Przeglądanie i komentowanie wymagań i projektów technicznych z perspektywy testowania Aktywna współpraca ze zwinnymi zespołami Scrum w celu zapewnienia wysokiej jakości dostaw Przygotowywanie, gromadzenie i zarządzanie danymi testowymi ze zrozumieniem zależności Raportowanie, debugowanie i weryfikacja usterek Rekomendowanie odpowiednich działań w oparciu o wyniki testów Identyfikacja i rozwiązywanie codziennych przeszkód, w tym ograniczanie ryzyka Ciągłe doskonalenie i rozszerzanie istniejących ram automatyzacji testów Wymagania Udokumentowane doświadczenie w tworzeniu oprogramowania i biegła znajomość języka Java Co najmniej 4 lata praktycznego doświadczenia w automatyzacji testów, w tym rozwiązań internetowych i opartych na REST Duże doświadczenie w testach niefunkcjonalnych, w szczególności w testach wydajnościowych Praktyczne doświadczenie z JMeter Znajomość narzędzi i frameworków do automatyzacji testów (np. Maven, Selenium WebDriver, Rest-Assured, Postman) Doświadczenie z narzędziami CI/CD (np. Jenkins, Bamboo) Biegła znajomość systemów kontroli wersji (Git) Ogólna wiedza z zakresu testowania zgodna z ISTQB Foundation Level Podstawowe doświadczenie w przygotowywaniu zapytań SQL Umiejętność manipulowania danymi przy użyciu różnych formatów (XML, CSV, JSON) Znajomość podejścia BDD i Gherkin będzie dodatkowym atutem Wymagana biegła znajomość języka polskiego Wymagane miejsce zamieszkania w Polsce Benefity, które czekają na Ciebie: Tytuł Great Place to Work od 2015 roku - to dzięki opiniom pracowników otrzymujemy tytuł i wdrażamy nowe pomysły Stabilność zatrudnienia - 2,1 MLD PLN przychodu, brak długów, od 2006 roku na rynku Dzielimy się zyskiem z pracownikami - od 2022 roku przeznaczyliśmy na ten cel już ponad 76 milionów PLN Bogaty pakiet benefitów - prywatna opieka zdrowotna, platforma kafeteryjna, zniżki na samochody i więcej Komfortowe miejsce pracy - pracuj w naszych biurach klasy A lub zdalnie Dziesiątki fascynujących projektów dla prestiżowych marek z całego świata 1 000 000 PLN rocznie na Twoje pomysły - taką kwotą wspieramy pasje i akcje wolontariackie naszych pracowników Stawiamy na Twój rozwój - meetupy, webinary, platforma szkoleniowa i blog technologiczny – Ty wybierasz Fantastyczna atmosfera stworzona przez wszystkich Sii Power People Dołącz do zespołu Sii – rozwijaj umiejętności, zdobywaj doświadczenie i buduj karierę!

🏢 Summary: Offer for a Performance Test Automation Engineer responsible for designing and executing automated non-functional and performance tests in international projects. The role focuses on ensuring high quality and system performance through test automation, analysis of results, and close collaboration with Agile teams. It includes continuous improvement of test frameworks and active participation in CI/CD processes. 🗂️ Requirements: Proven experience in software development, Proficiency in Java, Minimum 4 years of experience in test automation, Experience in web and REST-based test automation, Strong experience in non-functional and performance testing, Practical experience with JMeter, Knowledge of test automation tools and frameworks, Experience with CI/CD tools, Proficiency with Git, ISTQB Foundation Level knowledge, Basic experience with SQL queries, Ability to work with XML, CSV, JSON data formats, Fluent Polish, Residence in Poland 📃 Skills: Java, JMeter, Maven, Selenium, WebDriver, Rest-Assured, Postman, Jenkins, Bamboo, Git, SQL, XML, CSV, JSON, REST, BDD, Gherkin, CI/CD, Scrum 🏢 Description: Poszukujemy osoby na stanowisko Performance Test Automation Engineer, która dołączy do naszego zespołu i będzie wspierać projekty dla międzynarodowych klientów. Będziesz odpowiedzialny za zapewnienie wysokiej jakości i wydajności dostarczanych rozwiązań poprzez projektowanie i wykonywanie zautomatyzowanych testów niefunkcjonalnych oraz aktywną współpracę ze zwinnymi zespołami dostarczającymi. Twoje zadania Projektowanie i wdrażanie zautomatyzowanych skryptów testów wydajnościowych i niefunkcjonalnych Analiza wyników testów i identyfikacja defektów, w tym aktualizacja skryptów testowych Przeglądanie i komentowanie wymagań i projektów technicznych z perspektywy testowania Aktywna współpraca ze zwinnymi zespołami Scrum w celu zapewnienia wysokiej jakości dostaw Przygotowywanie, gromadzenie i zarządzanie danymi testowymi ze zrozumieniem zależności Raportowanie, debugowanie i weryfikacja usterek Rekomendowanie odpowiednich działań w oparciu o wyniki testów Identyfikacja i rozwiązywanie codziennych przeszkód, w tym ograniczanie ryzyka Ciągłe doskonalenie i rozszerzanie istniejących ram automatyzacji testów Wymagania Udokumentowane doświadczenie w tworzeniu oprogramowania i biegła znajomość języka Java Co najmniej 4 lata praktycznego doświadczenia w automatyzacji testów, w tym rozwiązań internetowych i opartych na REST Duże doświadczenie w testach niefunkcjonalnych, w szczególności w testach wydajnościowych Praktyczne doświadczenie z JMeter Znajomość narzędzi i frameworków do automatyzacji testów (np. Maven, Selenium WebDriver, Rest-Assured, Postman) Doświadczenie z narzędziami CI/CD (np. Jenkins, Bamboo) Biegła znajomość systemów kontroli wersji (Git) Ogólna wiedza z zakresu testowania zgodna z ISTQB Foundation Level Podstawowe doświadczenie w przygotowywaniu zapytań SQL Umiejętność manipulowania danymi przy użyciu różnych formatów (XML, CSV, JSON) Znajomość podejścia BDD i Gherkin będzie dodatkowym atutem Wymagana biegła znajomość języka polskiego Wymagane miejsce zamieszkania w Polsce Benefity, które czekają na Ciebie: Tytuł Great Place to Work od 2015 roku - to dzięki opiniom pracowników otrzymujemy tytuł i wdrażamy nowe pomysły Stabilność zatrudnienia - 2,1 MLD PLN przychodu, brak długów, od 2006 roku na rynku Dzielimy się zyskiem z pracownikami - od 2022 roku przeznaczyliśmy na ten cel już ponad 76 milionów PLN Bogaty pakiet benefitów - prywatna opieka zdrowotna, platforma kafeteryjna, zniżki na samochody i więcej Komfortowe miejsce pracy - pracuj w naszych biurach klasy A lub zdalnie Dziesiątki fascynujących projektów dla prestiżowych marek z całego świata 1 000 000 PLN rocznie na Twoje pomysły - taką kwotą wspieramy pasje i akcje wolontariackie naszych pracowników Stawiamy na Twój rozwój - meetupy, webinary, platforma szkoleniowa i blog technologiczny – Ty wybierasz Fantastyczna atmosfera stworzona przez wszystkich Sii Power People Dołącz do zespołu Sii – rozwijaj umiejętności, zdobywaj doświadczenie i buduj karierę!

🏢 Summary: Long-term senior role focused on designing, developing and maintaining automated tests (UI, API, integration, regression) within a Scrum team. The position emphasizes building and improving test frameworks, integrating tests with CI/CD pipelines, and ensuring high software quality through both automated and manual testing. Work is on-site and centered on enterprise-level systems. 🗂️ Requirements: Minimum 5 years experience as QA Engineer or Test Automation Engineer, Strong practical knowledge of Java, Experience with Playwright or Selenium, Experience with RestAssured, Experience with Postman or Newman, Experience with CI/CD tools (GitLab CI, GitHub Actions, Jenkins or Azure DevOps), Good knowledge of Git, Experience with Jira and Xray or Zephyr, Experience in API testing, Experience with enterprise systems, Knowledge of Scrum and QA processes 📃 Skills: Java, Playwright, Selenium, RestAssured, Postman, Newman, GitLab, GitHub, Jenkins, Azure, Git, Jira, Xray, Zephyr, Scrum, CI/CD, API 🏢 Description: Senior Test Automation Engineer 🚀 Dołącz do projektu, w którym jakość oprogramowania i automatyzacja testów są kluczowym elementem procesu developmentu. Szukamy doświadczonego Senior Test Automation Engineera, który będzie odpowiedzialny za rozwój testów automatycznych, wsparcie testów manualnych oraz aktywną współpracę z zespołem Scrum przy dostarczaniu stabilnych i wysokiej jakości rozwiązań. 📍 Forma pracy: stacjonarna 📅 Długoterminowa współpraca 💼 Senior level 🔎 Zakres obowiązków • projektowanie, rozwój i utrzymanie testów automatycznych (UI, API, regresja, integracja), • rozwój frameworków testowych zgodnie z dobrymi praktykami QA, • integracja testów z CI/CD oraz monitorowanie stabilności pipeline’ów, • analiza wyników testów i raportowanie błędów, • wykonywanie testów manualnych funkcjonalnych i eksploracyjnych, • przygotowywanie przypadków testowych na podstawie wymagań biznesowych, • udział w ceremoniach Scrum i planowaniu jakości w sprincie, • współpraca z developerami, DevOps oraz Product Ownerami. ✅ Wymagania • min. 5 lat doświadczenia jako QA Engineer / Test Automation Engineer, • praktyczna znajomość Java, • doświadczenie z: Playwright / Selenium, RestAssured, Postman/Newman, • doświadczenie z CI/CD: GitLab CI, GitHub Actions, Jenkins lub Azure DevOps, • dobra znajomość Git, Jira, Xray/Zephyr, • doświadczenie w testowaniu API i systemów enterprise, • znajomość Scrum oraz procesów QA. ⭐ Mile widziane • Python, JavaScript/TypeScript lub C#, • Docker / Kubernetes, • testy wydajnościowe, • doświadczenie w chmurze (AWS / Azure / GCP), • znajomość BDD / Cucumber / shift-left testing. 🎯 Szukamy osoby, która łączy podejście techniczne z wysoką dbałością o jakość, potrafi działać samodzielnie i dobrze odnajduje się w środowisku Agile.

🏢 Summary: The role focuses on driving load and performance testing for a connected home IoT platform, ensuring scalability, reliability, and resilience. You will design, execute, and automate performance tests, analyze bottlenecks, and improve system components within an agile environment. The position also involves maintaining testing infrastructure and collaborating with development teams to continuously enhance platform performance. 🗂️ Requirements: 5+ years experience in software or performance engineering, Proven experience in load testing and scaling systems, Experience with backend and web application scaling, Knowledge of messaging infrastructure and asynchronous processing, Experience with Infrastructure as Code, Experience with observability and monitoring tools, Understanding of SRE concepts, Experience working in Agile environments, Strong analytical and performance troubleshooting skills, Professional English proficiency 📃 Skills: Java, Scala, Go, Python, TypeScript, Terraform, Ansible, Prometheus, ELK, APM, REST, Jenkins, GitHub, Bitbucket, Confluence, Jira, Kafka, SQL 🏢 Description: Software Performance Engineer (f/m) As part of the development team, you will drive load and performance testing for connected home applications, designing, executing, and evaluating performance tests to ensure scalability, reliability, and resilience of the Home Connect IoT Platform. You will also contribute to the implementation and continuous improvement of services with a strong focus on performance engineering. Your responsibilities: Develop and conduct load and performance tests within an agile team as a core part of the Home Connect IoT Platform, in alignment with system architects and program management. Analyze performance bottlenecks and identify root causes across various system components. Evaluate existing and new components from a performance and reliability perspective. Create, enhance, and maintain automated load tests, reports, and dashboards. Develop and maintain the infrastructure of dedicated load and performance testing environments. Collaborate with dev teams in the continuous assessment and improvements of the Home Connect IoT platform's performance Expectations: 5+ years of experience in software engineering, performance engineering, or related areas. Strong willingness to continuously learn new technologies, tools, and engineering practices. Experience in load testing and scaling. Tech Stacks experience: Java; additional experience with Scala, Go, Python, or TypeScript is a plus Experience with scaling backends and web applications, messaging infrastructure, asynchronous IO, reactive programming, databases Infrastructure as Code (IaC), e.g., Terraform, Ansible. Observability tools (such as Prometheus, ELK, and APMs). REST load testing tools/frameworks Tools experience Confluence Jira Bitbucket/GitHub Jenkins/GitHub Actions Strong analytical skills: creating hypotheses, designing experiments to test them, defining and communicating metrics and chosen methods, presenting findings, and translating them into actionable improvements. Understanding of Site Reliability Engineering (SRE) concepts. Agile development practices, including SAFe, Scrum, Kanban, and Pair Programming. Excellent verbal and written communication skills in English; German language skills are a strong plus. We offer: Opportunities for continuous self-development in the latest technology stacks Participate in the concept creation and software architecture for new use cases in Home Connect Platform Stable employment in a professional work environment Private healthcare and sport package Flexible working hours with the possibility of remote work on selected days

🏢 Summary: Long-term B2B opportunity for an experienced Performance Test Engineer to design and execute performance testing for web applications, APIs, microservices, and PEGA-based systems. The role focuses on building and maintaining LoadRunner Enterprise scripts, analyzing bottlenecks, and supporting performance optimization across complex enterprise environments. Work is hybrid in Poland with English as the project language. 🗂️ Requirements: Minimum 4+ years of hands-on Performance Testing experience, Strong expertise in LoadRunner Enterprise (LRE), Practical experience with TrueClient scripting, Strong experience with HTTP/HTML scripting, Experience in API performance testing, Understanding of microservices architecture, Experience in performance testing of PEGA applications, Ability to analyze performance bottlenecks, Good command of English 📃 Skills: LoadRunner, LRE, TrueClient, HTTP, HTML, API, Microservices, PEGA, Dynatrace, AppDynamics, Splunk, Sysdig, Grafana, CI/CD, SQL 🏢 Description: Location: Gdańsk, Gdynia or Warsaw, Poland Working model : hybrid 2-3 days per week from the preferred office Language: English Contract: B2B, long-term, 12+ months We are looking for an experienced Performance Tester / Performance Test Engineer to join a project focused on performance testing of web-based applications, API, microservices, and PEGA-based systems. This role is ideal for someone with strong hands-on experience in LoadRunner Enterprise (LRE) , including scripting with TrueClient and HTTP/HTML protocols , as well as a solid understanding of API and microservices performance testing. Responsibilities Design, develop, execute, and maintain performance test scripts using LoadRunner Enterprise (LRE) . Create, enhance, and maintain TrueClient and HTTP/HTML scripts for web-based applications. Conduct performance, load, stress, endurance, and scalability testing. Prepare performance test plans, workload models, test scenarios, and test reports. Analyze application and system performance bottlenecks. Provide recommendations for performance tuning and optimization. Perform API and microservices performance testing, including service virtualization where required. Monitor system performance using tools such as Dynatrace, AppDynamics, Splunk, Sysdig, Grafana , or similar. Collaborate with Development, QA, Infrastructure, and Business teams to identify and resolve performance issues. Support performance testing activities for applications built on the PEGA platform. Requirements Minimum 4+ years of hands-on experience in Performance Testing . Strong expertise in LoadRunner Enterprise (LRE) . Practical experience with TrueClient scripting . Strong experience with HTTP/HTML scripting . Good understanding of API and microservices architecture . Experience in performance testing of PEGA applications . Strong analytical, troubleshooting, and problem-solving skills. Good command of English. Nice to have Experience with monitoring tools such as Dynatrace, Sysdig, AppDynamics, Grafana, and Splunk . Experience with CI/CD integration for performance testing. SQL knowledge for backend validation. Good communication and stakeholder management skills. What we offer Opportunity to work on complex enterprise-level systems. Collaboration with experienced Development, QA, Infrastructure, and Business teams. Work with modern performance testing and monitoring tools. Project locations available in Gdańsk, Gdynia or Warsaw . International working environment with English as the main project language. Long-term cooperation.

🏢 Summary: Long-term B2B contract for an experienced Performance Test Engineer to design and execute performance testing for web applications, APIs, microservices, and PEGA-based systems using LoadRunner Enterprise. The role focuses on scripting, analysis, monitoring, and optimization of enterprise-level systems in a hybrid model in Poland. 🗂️ Requirements: 4+ years of hands-on experience in Performance Testing, Strong expertise in LoadRunner Enterprise (LRE), Practical experience with TrueClient scripting, Strong experience with HTTP/HTML scripting, Understanding of API architecture, Understanding of microservices architecture, Experience in performance testing of PEGA applications, Ability to analyze and troubleshoot performance issues, Good command of English 📃 Skills: LoadRunner, LRE, TrueClient, HTTP, HTML, API, Microservices, PEGA, Dynatrace, AppDynamics, Splunk, Sysdig, Grafana, SQL, CI/CD 🏢 Description: Location: Gdańsk, Gdynia or Warsaw, Poland Working model : hybrid 2-3 days per week from the preferred office Language: English Contract: B2B, long-term, 12+ months We are looking for an experienced Performance Tester / Performance Test Engineer to join a project focused on performance testing of web-based applications, API, microservices, and PEGA-based systems. This role is ideal for someone with strong hands-on experience in LoadRunner Enterprise (LRE) , including scripting with TrueClient and HTTP/HTML protocols , as well as a solid understanding of API and microservices performance testing. Responsibilities Design, develop, execute, and maintain performance test scripts using LoadRunner Enterprise (LRE) . Create, enhance, and maintain TrueClient and HTTP/HTML scripts for web-based applications. Conduct performance, load, stress, endurance, and scalability testing. Prepare performance test plans, workload models, test scenarios, and test reports. Analyze application and system performance bottlenecks. Provide recommendations for performance tuning and optimization. Perform API and microservices performance testing, including service virtualization where required. Monitor system performance using tools such as Dynatrace, AppDynamics, Splunk, Sysdig, Grafana , or similar. Collaborate with Development, QA, Infrastructure, and Business teams to identify and resolve performance issues. Support performance testing activities for applications built on the PEGA platform. Requirements Minimum 4+ years of hands-on experience in Performance Testing . Strong expertise in LoadRunner Enterprise (LRE) . Practical experience with TrueClient scripting . Strong experience with HTTP/HTML scripting . Good understanding of API and microservices architecture . Experience in performance testing of PEGA applications . Strong analytical, troubleshooting, and problem-solving skills. Good command of English. Nice to have Experience with monitoring tools such as Dynatrace, Sysdig, AppDynamics, Grafana, and Splunk . Experience with CI/CD integration for performance testing. SQL knowledge for backend validation. Good communication and stakeholder management skills. What we offer Opportunity to work on complex enterprise-level systems. Collaboration with experienced Development, QA, Infrastructure, and Business teams. Work with modern performance testing and monitoring tools. Project locations available in Gdańsk, Gdynia or Warsaw . International working environment with English as the main project language. Long-term cooperation.