Software Performance Engineer (f/m)

🏢 Summary: Performance Engineer role focused on ensuring scalability, resilience, and high performance of an IoT platform handling tens of thousands of requests per second and millions of users. The position involves designing and executing load testing, analyzing bottlenecks, improving system reliability, and collaborating with development teams in an agile environment. The offer includes opportunities to shape platform architecture, work with modern technologies, and grow within a stable organization. 🗂️ Requirements: 5+ years of experience in software engineering or performance engineering, Experience in load testing and scaling systems, Experience with Java, Experience with backend and web application scaling, Experience with messaging infrastructure and asynchronous IO, Experience with reactive programming, Experience with databases, Experience with Infrastructure as Code (e.g., Terraform, Ansible), Experience with observability tools (e.g., Prometheus, ELK, APMs), Experience with REST load testing tools/frameworks, Experience with GitHub and GitHub Actions, Understanding of Site Reliability Engineering (SRE) concepts, Experience working in Agile methodologies (SAFe, Scrum, Kanban, Pair Programming), Strong analytical skills for performance analysis and experimentation, Professional proficiency in English 📃 Skills: Java, Scala, Go, Python, TypeScript, Terraform, Ansible, Prometheus, ELK, APM, REST, GitHub, GitHubActions, SRE, SAFe, Scrum, Kanban 🏢 Description: Your responsibilities As part of the Performance Engineering team, you will contribute to the implementation and continuous improvement of Home Connect IoT Platform services, with a primary focus on performance engineering, scalability, and resilience. You will evaluate new technologies, tools, and technical approaches before their adoption by platform or development teams, and drive load and performance testing of existing implementation to ensure the Platform performs reliably under real-world conditions. Analyze performance bottlenecks and identify root causes across system components in high-load environments, handling tens of thousands of requests per second and serving millions of users. Collaborate with dev teams in the continuous assessment and improvements of the Home Connect IoT platform's performance 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. Evaluate existing and new components from a performance and reliability perspective. Develop and maintain the infrastructure of dedicated load and performance testing environments. Create, enhance, and maintain automated load tests, reports, and dashboards. Your profile 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 GitHub, 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. Your benefits 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: The offer focuses on driving load and performance testing for a connected home IoT platform, ensuring scalability, reliability, and resilience of backend and web systems. The role involves designing, automating, and maintaining performance tests, analyzing bottlenecks, and improving system performance in collaboration with agile development teams. It also includes building and maintaining dedicated performance testing infrastructure and applying performance engineering and SRE practices. 🗂️ Requirements: 5+ years of experience in software engineering or performance engineering, Experience in load testing and system scaling, Experience with backend and web application scaling, Knowledge of messaging infrastructure and asynchronous IO, Experience with Infrastructure as Code, Experience with observability and monitoring tools, Understanding of SRE concepts, Experience with REST load testing tools, Experience working in agile methodologies, English proficiency 📃 Skills: Java, Scala, Go, Python, TypeScript, Terraform, Ansible, Prometheus, ELK, APM, REST, Jenkins, GitHub, Bitbucket, Confluence, Jira, SAFe, Scrum, Kanban 🏢 Description: 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: This role focuses on optimizing and validating large-scale machine learning workloads within a High-Performance Computing and compiler infrastructure environment. The engineer will manage performance benchmarking pipelines, conduct root-cause analysis of regressions, and automate infrastructure for reliable performance testing. It is a high-impact position centered on performance engineering, automation, and system-level debugging for next-generation hardware. 🗂️ Requirements: Strong proficiency in Python, Hands-on experience with SQL, Deep knowledge of Linux/Unix environments, Experience with Bash scripting, Ability to debug complex system-level issues, Experience with performance benchmarking and analysis, Clear technical documentation skills 📃 Skills: Python, SQL, Linux, Unix, Bash, HPC, CI/CD, Bazel, CMake, JAX, PyTorch, TensorFlow, GPU 🏢 Description: We are looking for an experienced Software Engineer in Performance Infrastructure to join our team. This position is part of a high-impact project for a world-renowned global tech leader and AI innovator . You will be focused on optimizing large-scale machine learning workloads for next-generation hardware within a High-Performance Computing (HPC) and Compiler Infrastructure environment. Your core mission will be to manage the end-to-end health, precision, and reliability of performance benchmarking pipelines, working at the intersection of automated infrastructure and performance engineering. Responsibilities: Performance Analysis & Validation: Evaluate results from automated benchmarking suites to detect and analyze performance shifts and shifts in metrics. Root-Cause Analysis: Perform deep-dive root-cause analysis on bisection results to identify specific code changes responsible for performance regressions. Infrastructure Automation: Develop and maintain Python-based tooling for benchmark automation, hardware configuration management, and automated data recovery. System Debugging: Troubleshoot failures within the benchmarking pipeline, including script errors, environment misconfigurations, and resource allocation issues in distributed clusters. Data Pipelines & Dashboards: Maintain and enhance data pipelines and visualization tools to ensure high-fidelity performance metrics are consistently available for engineering teams. Technical Documentation: Develop and maintain engineering playbooks and best practices to improve consistency in performance testing and incident investigation. Min requirements: Strong proficiency in Python for systems automation, data processing, and integration. Hands-on experience with SQL for querying large datasets and managing performance metrics. Deep knowledge of Linux/Unix environments, shell scripting (Bash), and command-line development. Exceptional analytical and problem-solving skills with the ability to debug complex system-level issues. Clear written communication skills for documenting technical investigations and collaborating across globally distributed teams. Would be a plus: Practical experience with distributed build and test systems (e.g., Bazel / CMake ). Strong familiarity with CI/CD pipelines and automated regression testing. Basic understanding of hardware accelerators ( GPUs ) or machine learning frameworks (e.g., JAX, PyTorch, TensorFlow ). Background in Performance Engineering or SRE (Site Reliability Engineering). We offer: Opportunity to work on bleeding-edge projects Work with a highly motivated and dedicated team Competitive salary Flexible schedule Benefits package - medical insurance, sports Corporate social events Professional development opportunities Well-equipped office About us: Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI , supported by profound expertise and ongoing investment in data , analytics , cloud & DevOps , application modernization and customer experience . Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.

🏢 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: 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: Hybrid Software Engineer (Performance) role focused on improving performance, scalability, and reliability of a large-scale cloud platform. The position involves analyzing bottlenecks in distributed systems, designing and executing load tests, and enhancing observability and automation. You will collaborate with architects and engineering teams to validate and optimize high-traffic backend systems. 🗂️ Requirements: 5+ years in Software Engineering, Performance Engineering, SRE, or related field, Hands-on experience with load testing and performance analysis, Experience with high-scale backend systems and distributed architectures, Strong programming skills in Java, Experience with Infrastructure as Code tools, Experience with observability and monitoring solutions, Familiarity with REST API load testing tools, Experience with GitHub and CI/CD pipelines, Understanding of SRE principles, Professional English communication skills 📃 Skills: Java, Scala, Go, Python, TypeScript, Terraform, Ansible, Prometheus, ELK, APM, REST, GitHub, CI/CD, GitHubActions, SRE, Scrum, Kanban, SAFe 🏢 Description: Software Engineer (Performance) Location: Wrocław / Rzeszów / Łódź / Warszawa Work model: Hybrid (approximately 80% remote work, 20% office presence) Responsibilities As part of the Performance Engineering team, you will contribute to the development and continuous improvement of a large-scale cloud platform, focusing on performance, scalability, and reliability. You will evaluate new technologies, tools, and engineering approaches before their adoption and support performance validation of existing solutions to ensure they operate efficiently under real-world workloads. Analyze performance bottlenecks and identify root causes across distributed system components in high-load environments handling large volumes of traffic. Collaborate with development teams to continuously assess and improve platform performance. Design, develop, and execute load and performance tests in close cooperation with architects and engineering stakeholders. Evaluate existing and new platform components from a performance, scalability, and resilience perspective. Develop and maintain infrastructure dedicated to performance and load testing activities. Create, enhance, and maintain automated performance tests, reports, dashboards, and monitoring solutions. Support engineering teams in implementing performance best practices and optimization initiatives. Requirements 5+ years of experience in Software Engineering, Performance Engineering, Site Reliability Engineering, or a related field. Hands-on experience with load testing, performance analysis, and scalability improvements. Strong analytical and problem-solving skills, including hypothesis creation, experiment design, metric definition, and result interpretation. Experience working with high-scale backend systems and distributed architectures. Technical Skills Strong programming skills in Java; experience with Scala, Go, Python, or TypeScript is considered an advantage. Experience with backend applications, messaging systems, asynchronous processing, reactive programming, and databases. Knowledge of Infrastructure as Code tools such as Terraform or Ansible. Experience with observability and monitoring solutions (e.g., Prometheus, ELK stack, APM tools). Familiarity with REST API load testing tools and frameworks. Experience with GitHub and CI/CD pipelines, including GitHub Actions. Understanding of Site Reliability Engineering (SRE) principles and practices. Experience working in Agile environments (Scrum, Kanban, SAFe, Pair Programming). Additional Requirements Strong communication skills in English. German language skills are considered a plus. Curiosity, ownership mindset, and willingness to continuously learn new technologies and engineering practices. What We Offer Opportunity to work on large-scale, high-traffic cloud systems serving millions of users. Exposure to modern technologies and engineering practices. Participation in architecture discussions and technical decision-making. Stable employment within an international engineering environment. Private healthcare and sports package. Flexible working hours. Hybrid work model (80% remote / 20% office). Professional growth and continuous learning opportunities. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Hybrid Performance Test Engineer role focused on cybersecurity, responsible for designing and executing performance and security testing to ensure reliability and protection of critical systems. The position involves analyzing system performance, identifying vulnerabilities, and collaborating with development teams to improve secure architectures. Candidates should have experience in performance testing, scripting or programming knowledge, and a solid understanding of cybersecurity principles. 🗂️ Requirements: Experience in performance testing, Familiarity with performance testing tools and frameworks, Understanding of cybersecurity principles, threats, and defense mechanisms, Knowledge of Python or Java, Strong analytical and problem-solving skills, Good communication skills, Good command of English, Legal right to work in the European Union 📃 Skills: Python, Java, BurpSuite, OWASPZAP, Cybersecurity, PerformanceTesting, SecurityTesting, Cloud, ISTQB, CEH 🏢 Description: Empower cybersecurity excellence — drive reliable, secure digital landscapes. Hybrid – 6 days from the office per month, with up to 3 remote days per week. As a Performance Test Engineer – Cybersecurity Focus , you will be working for our client to ensure the robustness and security of their critical systems. The role is pivotal in delivering high-quality cybersecurity solutions that protect organizations from emerging threats and vulnerabilities, fostering safer digital environments. Join us to contribute to cutting-edge security innovations and advance your career in a dynamic industry. Your main responsibilities: Design, develop, and execute performance and security testing plans for cybersecurity solutions. Analyze system performance under various loads and identify potential bottlenecks or vulnerabilities. Collaborate with development teams to optimize security architectures and performance. Identify, troubleshoot, and report on security-related system issues to improve overall reliability. Conduct continuous performance assessments to ensure compliance with security standards. Document testing procedures, results, and improvement recommendations transparently. Stay updated on the latest cybersecurity threats, tools, and testing methodologies. You’re ideal for this role if you have: Experience in performance testing, ideally within cybersecurity or related fields. Familiarity with performance testing tools and frameworks. Basic understanding of cybersecurity principles, threats, and defense mechanisms. Knowledge of scripting or programming languages such as Python, Java, or similar. Strong analytical and problem-solving skills. Excellent communication skills to document and present testing outcomes. It is a strong plus if you have: (optional) Certifications related to cybersecurity or performance testing (e.g., Certified Ethical Hacker, ISTQB Security Tester). Experience with security testing tools like Burp Suite, OWASP ZAP, etc. Knowledge of cloud environments and security protocols. Language Required for the role: Good command of English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Project-based Software Engineer (SRE / Production Engineering) role focused on improving system reliability, performance, and automation in a high-performance environment. The position involves building automation tools, supporting deployments, and resolving complex production issues. The role emphasizes collaboration with engineering and infrastructure teams to enhance stability and efficiency. 🗂️ Requirements: Experience in Software Engineering, SRE, or DevOps, Proficiency in Python, C++, or Java, Strong Linux knowledge, Understanding of networking concepts, Experience with Git, Production troubleshooting experience, Ability to build automation tools, Experience supporting deployments and release processes 📃 Skills: Python, C++, Java, Linux, Networking, Git, Scripting, SRE, DevOps, CI/CD 🏢 Description: Software Engineer (SRE / Production Engineering) We are looking for a Software Engineer to support a project focused on system reliability, automation, and production engineering within a high-performance environment. What you’ll do: • Build tools and automation to improve system stability and performance • Support deployments and release processes • Troubleshoot and resolve complex production issues • Collaborate with engineering and infrastructure teams • Create technical documentation and provide progress updates Tech stack: Python / C++ / Java / scripting, Linux, networking, Git Nice to have: Prometheus, Grafana, Splunk, Jenkins, CI/CD tools What we’re looking for: • Experience in software engineering or SRE / DevOps • Strong problem-solving and production troubleshooting skills • Ability to work independently and deliver results • Good communication skills and adaptability Project-based role with a focus on automation, performance, and reliability improvements.

🏢 Summary: Performance Engineer role focused on designing and executing performance testing for EV charging, retail, and mobile solutions in a cloud-based environment. The position involves building and maintaining Gatling test scripts, analyzing system performance, and optimizing scalability in collaboration with development teams. You will drive performance engineering standards and support a shift-left approach to ensure fast and stable systems. 🗂️ Requirements: Minimum 5 years of experience in software testing including performance testing, Hands-on experience with Gatling, Strong programming skills in Java, Understanding of OOP principles and SOLID, DRY, YAGNI, KISS practices, Knowledge of performance engineering concepts and optimization (architectural patterns, databases, microservices, queues, JVM tuning), Experience with performance testing methodologies and workload modeling, Experience with Azure or AWS cloud platforms, Practical experience with Docker, Experience with observability and monitoring tools, Experience with CI/CD pipelines, Experience with Git version control, English proficiency at B2 level minimum, Fluent Polish, Residing in Poland 📃 Skills: Gatling, Java, Azure, AWS, Docker, Grafana, Kibana, InfluxDB, Prometheus, CloudWatch, ApplicationInsights, GitHub, Actions, AzureDevOps, Git, JVM, OOP, SOLID, DRY, YAGNI, KISS, Microservices, Databases, Queues, CI/CD 🏢 Description: 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. Your tasks 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 Requirements 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 Nice-to-have requirements Performance testing experience (JMeter, Python, Kubernetes), including mobile apps Familiarity with GitHub Copilot What we offer 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 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 If you want to work on systems with high operational significance — apply now!