Software Engineer (Performance)​ (f/m)

🏢 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: 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: 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: 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 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: 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: 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: 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: 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