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 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: Development of a microservices-based IoT platform focused on backend and full-stack solutions using a TypeScript stack. The role involves building and optimizing Node.js services, integrating REST APIs, contributing to infrastructure as code, and maintaining automated tests in a cloud environment. The position includes active participation in architectural decisions and AI-related engineering tasks. 🗂️ Requirements: 3+ years of experience with TypeScript, Strong experience with Node.js backend development, Experience with React, Experience with Terraform and infrastructure as code, Experience with RESTful APIs, Knowledge of microservices architecture, Experience with PostgreSQL, Experience with MongoDB, Experience with GitHub and pull requests, Experience with AWS cloud services, Experience with unit and integration testing, Hands-on experience in AI software engineering 📃 Skills: TypeScript, Node.js, React, Terraform, REST, Microservices, PostgreSQL, MongoDB, GitHub, AWS, UnitTesting, IntegrationTesting, AI 🏢 Description: Your responsibilities Participate in further development of microservices-oriented architecture in the context of Home Connect IoT-Platform. Participate in the selection of proper and well-suited technologies for the project (your voice matters). Continuously work on optimizing the code to achieve a solid software architecture. Collaborate with team by focusing on delivering value for users. Create, enhance and maintain automated Unit- and Integration tests. Analyze software problems and work on bug fixes. Your profile 3+ years of experience in software development focused on TypeScript tech-stack (as backend- or full stack-developer). Extensive experience in building backend applications with Node.js. Experience with building front-end solutions - React. Experience with "infrastructure as a code" tools (Terraform) Extensive experience working with RESTful APIs and integrating with complex backend systems. Understanding of microservice architecture and ability to implement its best practices. Experience in working with relational databases (PostgreSQL) and NoSQL databases (MongoDB). Managing code repositories (like Github), handling Pull Requests, collaborating on code versions. Experience in working with cloud solutions (AWS). Know-how of methods and tools for automated testing (Unit-/UI-Testing). Agile development, supported by practices (Scrum, Kanban) and related tools. Comfortable in working with English - verbal and written communication skills. Open to work on tasks not directly about coding new features, such as research, testing, feedback the UX design etc. Proactive posture – active in finding topics to work on, willingness to find and work on improvements. Focused on user value. Team player and open for effective remote cooperation (distributed team). AI : Hands-on interest & experience in AI SW Engineering Nice to have: Experience in smart home solutions. Experience in event-driven architecture - Apache Kafka or similar. Knowledge of CI/CD (especially Artifactory, Jenkins), project management tools (Confluence, JIRA) Strong communication skills including ability to present results in front of a bigger audience (sprint review, system demo). German would be a plus. Your benefits Dynamic International Environment: Collaborate with diverse teams globally, enriching your experience and expanding your professional network Collaborative Team Culture: Join a supportive team that values your contributions and encourages your growth Professional Development Opportunities: Expand your skills through engaging projects and responsibilities that challenge and inspire you Flexible hybrid work arrangements: Enjoy a mix of remote work and office collaboration, with a minimum of one day per week in our modern offices Comprehensive Benefits Package: Enjoy private health care, a Lunchpass card, a sports card, group insurance options and employee discounts

🏢 Summary: Development of a microservices-based IoT platform (Home Connect) using a TypeScript stack, focused on backend and full-stack features, cloud infrastructure, and code quality. The role involves building and optimizing Node.js services, integrating complex systems, and contributing to architecture and technology decisions. Strong emphasis on automated testing, cloud deployment, and scalable microservice design. 🗂️ Requirements: 3+ years TypeScript development experience, Strong Node.js backend development experience, Experience with React, Experience with Terraform (Infrastructure as Code), Experience with RESTful APIs, Knowledge of microservices architecture, Experience with PostgreSQL, Experience with MongoDB, Experience with AWS, Experience with automated testing (Unit, Integration, UI), Experience with Git and Pull Requests, Experience working in Agile (Scrum or Kanban), English proficiency (written and spoken) 📃 Skills: TypeScript, Node.js, React, Terraform, REST, Microservices, PostgreSQL, MongoDB, AWS, Git, JUnit, Jest, CI/CD, Jenkins, Artifactory, Kafka, Docker, AI 🏢 Description: Your responsibilities Participate in further development of microservices-oriented architecture in the context of Home Connect IoT-Platform. Participate in the selection of proper and well-suited technologies for the project (your voice matters). Continuously work on optimizing the code to achieve a solid software architecture. Collaborate with team by focusing on delivering value for users. Create, enhance and maintain automated Unit- and Integration tests. Analyze software problems and work on bug fixes. Your profile 3+ years of experience in software development focused on TypeScript tech-stack (as backend- or full stack-developer). Extensive experience in building backend applications with Node.js. Experience with building front-end solutions - React. Experience with "infrastructure as a code" tools (Terraform) Extensive experience working with RESTful APIs and integrating with complex backend systems. Understanding of microservice architecture and ability to implement its best practices. Experience in working with relational databases (PostgreSQL) and NoSQL databases (MongoDB). Managing code repositories (like Github), handling Pull Requests, collaborating on code versions. Experience in working with cloud solutions (AWS). Know-how of methods and tools for automated testing (Unit-/UI-Testing). Agile development, supported by practices (Scrum, Kanban) and related tools. Comfortable in working with English - verbal and written communication skills. Open to work on tasks not directly about coding new features, such as research, testing, feedback the UX design etc. Proactive posture – active in finding topics to work on, willingness to find and work on improvements. Focused on user value. Team player and open for effective remote cooperation (distributed team). AI : Hands-on interest & experience in AI SW Engineering Nice to have: Experience in smart home solutions. Experience in event-driven architecture - Apache Kafka or similar. Knowledge of CI/CD (especially Artifactory, Jenkins), project management tools (Confluence, JIRA) Strong communication skills including ability to present results in front of a bigger audience (sprint review, system demo). German would be a plus. Your benefits Dynamic International Environment: Collaborate with diverse teams globally, enriching your experience and expanding your professional network Collaborative Team Culture: Join a supportive team that values your contributions and encourages your growth Professional Development Opportunities: Expand your skills through engaging projects and responsibilities that challenge and inspire you Flexible hybrid work arrangements: Enjoy a mix of remote work and office collaboration, with a minimum of one day per week in our modern offices Comprehensive Benefits Package: Enjoy private health care, a Lunchpass card, a sports card, group insurance options and employee discounts

🏢 Summary: Senior Engineer role focused on architecting and building a scalable, event-driven IoT platform, bridging high-concurrency backend systems with high-performance web applications. The position involves designing microservices, real-time streaming pipelines, robust APIs, and responsive React-based frontends to support millions of IoT events globally. Strong emphasis on system reliability, testing excellence, and low-latency distributed architecture. 🗂️ Requirements: 5+ years of software engineering experience, Deep expertise in Node.js and TypeScript, Strong knowledge of Event-Driven Architecture, Experience with asynchronous programming patterns, Proven experience designing and maintaining complex, versioned APIs, Expert-level proficiency in React and Next.js, Experience with Unit, Integration, and E2E testing, Experience with NoSQL and SQL databases, Experience with search engines such as OpenSearch or Elasticsearch, Professional-level English 📃 Skills: Node.js, TypeScript, Kafka, RabbitMQ, React, Next.js, Jest, Vitest, Playwright, NoSQL, SQL, OpenSearch, Elasticsearch, Python, Microservices, APIs 🏢 Description: Your responsibilities Join the Home Connect team to architect the core of our global IoT ecosystem. We are looking for a Senior Engineer who can bridge the gap between high-concurrency distributed systems and intuitive, high-performance user-facing web applications. You will play a pivotal role in designing the backbone of our platform - ensuring that millions of real-time IoT events translate into a seamless, reliable experience for our users. System Architecture: Design and implement scalable microservices using Node.js and TypeScript. You’ll be responsible for the "heavy lifting" - ensuring high availability and low latency across a global infrastructure. Backend & Streaming: Master our Event-Driven Architecture . You will build and optimize asynchronous workflows using Kafka/RabbitMQ to handle massive data streams from IoT sensors with precision. API Leadership: Take full ownership of API Design . You’ll create the high-performance, type-safe contracts that connect our hardware, cloud services, and frontend applications. Frontend Mastery: Build sophisticated, responsive web applications using React and Next.js . You’ll focus on state management and performance to ensure the UI feels instantaneous, even when dealing with complex backend states. Testing & Reliability: Drive a "zero-regression" culture. You will design and implement comprehensive testing strategies—covering Unit, Integration, and E2E (Jest, Vitest, Playwright) —to ensure our system remains rock-solid Your profile Experience: 5+ years in software engineering, with deep expertise in Node.js and TypeScript . Backend & Messaging: Strong command of Event-Driven Architecture and advanced asynchronous programming patterns. API Design Mastery: Proven ability to design and maintain complex, versioned APIs and move toward contract-driven development . Frontend Proficiency: Expert-level React and Next.js , with a deep understanding of browser performance and modern state management. Testing Excellence: A "test-first" mindset with hands-on experience in building resilient testing suites (Unit, Integration, E2E). Data & Search: Solid experience with NoSQL/SQL databases and search engines like OpenSearch or Elasticsearch . AI & Python (Nice to Have): Hands-on interest in AI development, Vector Databases , or building microservices with Python . Communication: Professional-level English and the ability to mentor engineers on complex architectural trade-offs. Your benefits If you are passionate about delivering high-quality, user-centric applications and have a strong background in TypeScript, React, and Node.js, we would love to hear from. you. Join us in creating the next generation of connected home experiences. Contribute to the architectural design of innovative use cases within the Home Connect ecosystem, with a particular focus on guided cooking, while seamlessly incorporating the latest technological advancements. Engaged community of developers and knowledge sharing events (e.g. Techdays). Stable employment in a professional and collaborative work environment. Flexible working hours, with the option for remote work on selected days. Comprehensive benefits package, including private health care, Lunchpass card, sport card, group insurance options, and fresh fruit offerings.

🏢 Summary: Senior Engineer role focused on architecting and developing a scalable IoT platform, combining high-concurrency backend systems with high-performance web applications. The position involves designing microservices, event-driven architectures, and type-safe APIs while ensuring seamless integration between IoT devices, cloud services, and frontend applications. The role also emphasizes comprehensive testing and system reliability across a global infrastructure. 🗂️ Requirements: 5+ years of experience in software engineering, Strong expertise in Node.js and TypeScript, Experience with Event-Driven Architecture, Advanced asynchronous programming skills, Proven experience designing and maintaining versioned APIs, Expert-level knowledge of React and Next.js, Experience with Unit, Integration, and E2E testing, Experience with SQL and NoSQL databases, Experience with search engines such as OpenSearch or Elasticsearch, Professional-level English 📃 Skills: Node.js, TypeScript, React, Next.js, Kafka, RabbitMQ, Jest, Vitest, Playwright, SQL, NoSQL, OpenSearch, Elasticsearch, Python, AI 🏢 Description: Join the Home Connect team to architect the core of our global IoT ecosystem. We are looking for a Senior Engineer who can bridge the gap between high-concurrency distributed systems and intuitive, high-performance user-facing web applications. You will play a pivotal role in designing the backbone of our platform - ensuring that millions of real-time IoT events translate into a seamless, reliable experience for our users. System Architecture: Design and implement scalable microservices using Node.js and TypeScript. You’ll be responsible for the "heavy lifting" - ensuring high availability and low latency across a global infrastructure. Backend & Streaming: Master our Event-Driven Architecture . You will build and optimize asynchronous workflows using Kafka/RabbitMQ to handle massive data streams from IoT sensors with precision. API Leadership: Take full ownership of API Design . You’ll create the high-performance, type-safe contracts that connect our hardware, cloud services, and frontend applications. Frontend Mastery: Build sophisticated, responsive web applications using React and Next.js . You’ll focus on state management and performance to ensure the UI feels instantaneous, even when dealing with complex backend states. Testing & Reliability: Drive a "zero-regression" culture. You will design and implement comprehensive testing strategies—covering Unit, Integration, and E2E (Jest, Vitest, Playwright) —to ensure our system remains rock-solid Wymagania: Experience: 5+ years in software engineering, with deep expertise in Node.js and TypeScript . Backend & Messaging: Strong command of Event-Driven Architecture and advanced asynchronous programming patterns. API Design Mastery: Proven ability to design and maintain complex, versioned APIs and move toward contract-driven development . Frontend Proficiency: Expert-level React and Next.js , with a deep understanding of browser performance and modern state management. Testing Excellence: A "test-first" mindset with hands-on experience in building resilient testing suites (Unit, Integration, E2E). Data & Search: Solid experience with NoSQL/SQL databases and search engines like OpenSearch or Elasticsearch . AI & Python (Nice to Have): Hands-on interest in AI development, Vector Databases , or building microservices with Python . Communication: Professional-level English and the ability to mentor engineers on complex architectural trade-offs. Oferujemy: If you are passionate about delivering high-quality, user-centric applications and have a strong background in TypeScript, React, and Node.js, we would love to hear from. you. Join us in creating the next generation of connected home experiences. Contribute to the architectural design of innovative use cases within the Home Connect ecosystem, with a particular focus on guided cooking, while seamlessly incorporating the latest technological advancements. Engaged community of developers and knowledge sharing events (e.g. Techdays). Stable employment in a professional and collaborative work environment. Flexible working hours, with the option for remote work on selected days. Comprehensive benefits package, including private health care, Lunchpass card, sport card, group insurance options, and fresh fruit offerings.

🏢 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: 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!

🏢 Summary: The role involves designing and developing Java-based tools and frameworks to support functional and performance testing within a QA team. It focuses on building automated solutions, improving testing efficiency, and contributing to software design, performance analysis, and code quality. The position also includes collaboration, technical documentation, and mentoring junior engineers. 🗂️ Requirements: 5+ years of software development experience, Strong proficiency in Java, Experience with SpringBoot, Experience with JPA and Hibernate, Experience building RESTful services, Knowledge of relational databases (DB2 or PostgreSQL), Strong understanding of Object-Oriented Programming, Understanding of Concurrent Programming, Experience with Git version control, Ability to write unit tests and conduct code reviews, English proficiency 📃 Skills: Java, SpringBoot, JPA, Hibernate, REST, DB2, PostgreSQL, SQL, OOP, Concurrency, Git, JUnit, Kafka, CQRS, Docker, Kubernetes 🏢 Description: Java Developer Role Overview Design and develop tooling to support functional and performance testing within the QA team. Implement automated solutions that improve testing efficiency and reliability. Provide hands-on development of test frameworks, utilities, and performance test tooling. Technical Skills Required 5+ years of development experience Proficiency in Java, SpringBoot, JPA, Hibernate, RESTful services Knowledge of relational databases (DB2/PostgreSQL) Good understanding of Object-Oriented and Concurrent Programming Solid experience with version control systems (preferred GIT) Language: English Bonus: Knowledge of event streaming, CQRS, Kafka, Docker/Kubernetes High-Level Task Assignment Perform hands-on software design and development. Investigate performance issues, support root-cause analysis, and collaborate on improvements. Write unit tests and perform peer design/code reviews. Provide technical solutions to complex problems and write technical documents. Work closely with requirements engineers to estimate and developed to quality products. Mentor and help grow junior members of the engineering team.

🏢 Summary: The offer is for a senior non-functional test engineer to ensure performance, reliability, and resilience of payment systems in a large-scale financial project. The role focuses on designing and executing performance tests, integrating testing into CI/CD pipelines, and analyzing system behavior in production-like environments. You will collaborate with distributed teams to improve stability of critical systems. 🗂️ Requirements: Minimum 7 years of software testing experience, Minimum 5 years of non-functional testing experience, Hands-on experience with performance testing tools, Experience with CI/CD tools, Ability to write and analyze SQL queries, Experience with Jira, Knowledge of XML, Knowledge of SOAP, Knowledge of JSON, Experience working in SAFe methodology 📃 Skills: LoadRunner, JMeter, Gatling, Jenkins, Maven, Git, Subversion, SQL, AWR, Jira, XML, SOAP, JSON, CI/CD, SAFe 🏢 Description: About the project You will join a project delivered within a large financial organization, focused on ensuring high-quality payment systems in terms of performance, reliability, and resilience. You will have a real impact on the stability of systems operating in a production environment. Responsibilities Creating non-functional testing strategies and test plans based on risk analysis Designing and executing performance, reliability, and resilience tests Analyzing test results and identifying performance issues Collaborating with technology teams to resolve issues Reviewing and optimizing test cases and test scripts Prioritizing and coordinating the defect resolution process Integrating non-functional testing into CI/CD pipelines Preparing reports and presenting results to stakeholders Collaborating with distributed teams and external vendors Participating in projects delivered in the SAFe methodology Requirements Minimum 7 years of experience in software testing Minimum 5 years of experience in non-functional testing (performance, reliability) Hands-on experience with performance testing tools (e.g., LoadRunner, JMeter, Gatling) Experience working with CI/CD tools (Jenkins, Maven, Git, Subversion) Ability to work with SQL and analyze reports (e.g., AWR) Experience with Jira (QTest is a plus) Knowledge of technologies: XML, SOAP, JSON Nice to have: experience with Linux/Unix, cloud environments, and mainframe systems Very good command of English Nice to have Experience in the banking sector or payment systems Development experience Experience in defining and implementing testing processes Soft skills Ability to work in a complex, multi-team environment Proactivity and independence Strong communication skills Ability to plan work and prioritize tasks Problem-solving mindset and continuous improvement approach What we offer Participation in a large-scale, technologically advanced project Work in an environment based on SAFe and CI/CD Real impact on the quality of critical systems Work in an international and distributed team High level of autonomy and influence on decision-making