• Design, develop, and maintain performance test scripts using Apache JMeter. • Configure and execute Load, Stress, Spike, and Endurance (Soak) Tests to assess system behavior under varying workload conditions. • Utilize Azure Load Testing to perform large-scale cloud-based performance assessments. • Develop and execute browser-based performance measurements using Playwright. • Implement test data parameterization, request correlation, and workload modeling to simulate real-world user traffic. • Measure and validate page load times, rendering performance, API response times, throughput, and concurrency against defined SLAs. • Monitor application and infrastructure performance using Azure Monitor and Application Insights. • Analyze CPU, memory, network, database, and application-level metrics to identify performance bottlenecks. • Conduct root cause analysis and provide actionable recommendations for performance optimization. • Prepare detailed performance test reports, SLA validation reports, bottleneck analysis, and improvement recommendations. • Collaborate with Development, DevOps, and Business teams during performance assessments and release validation activities. • Support performance tuning efforts and validate the effectiveness of implemented improvements. • Ensure performance testing best practices and standards are followed throughout the software development lifecycle.

• Collaborate with Developers and Product Owners to understand testing requirements and objectives • Develop BDDs, test cases and test scripts based on User Stories and Acceptance Criteria • Execute test cases and document test results, identifying and prioritising defects for resolution • Contribute to the continuous improvement of testing processes and methodologies • Communicate effectively with project team members to ensure timely delivery of testing activities • Provide support and guidance to junior team members as needed • Design, develop, and maintain automated test scripts using Selenium or Jest for functional and regression testing • Utilise Cucumber for behavior-driven development (BDD) and ensure alignment between technical and business requirements • Work with cloud platforms such as AWS and Azure DevOps to integrate and execute automated tests in CI/CD pipelines • Conduct testing for Workday applications, ensuring data integrity, functionality, and performance

Role Description We are seeking a skilled and detail-oriented Performance Test Engineer to join our Quality Engineering team. The ideal candidate will be responsible for designing, executing, and analyzing performance tests for enterprise web applications and API-driven systems. This role requires expertise in performance testing tools, cloud-based load testing platforms, and monitoring solutions to validate application scalability, reliability, and responsiveness. The Performance Test Engineer will work closely with Development, QA, DevOps, and Business teams to: - Identify performance bottlenecks - Validate Service Level Agreements (SLAs) - Provide recommendations that improve overall system performance and user experience Key Responsibilities - Understand application architecture, infrastructure components, and critical business workflows to define performance testing requirements. - Design, develop, and maintain performance test scripts using Apache JMeter. - Configure and execute Load, Stress, Spike, and Endurance (Soak) Tests to assess system behavior under varying workload conditions. - Utilize Azure Load Testing to perform large-scale cloud-based performance assessments. - Develop and execute browser-based performance measurements using Playwright. - Implement test data parameterization, request correlation, and workload modeling to simulate real-world user traffic. - Measure and validate page load times, rendering performance, API response times, throughput, and concurrency against defined SLAs. - Monitor application and infrastructure performance using Azure Monitor and Application Insights. - Analyze CPU, memory, network, database, and application-level metrics to identify performance bottlenecks. - Conduct root cause analysis and provide actionable recommendations for performance optimization. - Prepare detailed performance test reports, SLA validation reports, bottleneck analysis, and improvement recommendations. - Collaborate with Development, DevOps, and Business teams during performance assessments and release validation activities. - Support performance tuning efforts and validate the effectiveness of implemented improvements. - Ensure performance testing best practices and standards are followed throughout the software development lifecycle. Qualifications - Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field. Requirements - 5–7 years of hands-on experience in Performance and Load Testing. - Experience testing enterprise web applications and API-based systems. - Experience in performance analysis, reporting, and performance engineering practices. Technical Skills - Strong expertise in Apache JMeter for load and performance testing. - Experience with Azure Load Testing or similar cloud-based load testing platforms (Mandatory). - Experience using Playwright for browser-based performance measurements. - Strong understanding of HTTP/HTTPS protocols, REST APIs, and web application architecture. - Experience with request correlation, parameterization, and dynamic data handling. - Knowledge of performance metrics including response time, throughput, concurrency, latency, and error rates. - Hands-on experience with Azure Monitor and Application Insights. - Ability to analyze infrastructure and application performance metrics, including CPU, memory, network, and resource utilization. - Experience identifying performance bottlenecks and recommending optimization solutions. Key Competencies - Strong analytical and problem-solving skills. - Excellent troubleshooting and root cause analysis capabilities. - Strong communication and documentation skills. - Ability to work effectively in cross-functional teams. - Strong attention to detail and commitment to quality. - Ability to manage multiple priorities in a fast-paced environment. - Proactive approach to identifying risks and driving performance improvements. Preferred Skills - Experience with cloud-native applications and microservices architectures. - Familiarity with CI/CD pipelines and DevOps practices. - Understanding of performance tuning techniques for web applications, APIs, and databases. - Knowledge of enterprise monitoring and observability tools.

Role Description We're looking for a Senior SDET (Software Development Engineer in Test) with strong Go expertise to significantly scale our test automation coverage and build out our tooling infrastructure. Qualifications - 3+ years of hands-on Go experience, writing clean, maintainable, idiomatic code. - Strong understanding of Go concurrency, including building with goroutines, channels, and synchronization primitives, as well as reasoning about race conditions, deadlocks, and graceful shutdowns. - Solid grasp of modern Go idioms, including context.Context, generics, proper error handling, and structured logging. - Experience with gRPC, particularly streaming RPCs. - Solid understanding of networking fundamentals, including TCP, UDP, HTTP/2, and TLS. - Strong testing expertise, including table-driven tests, the race detector, fuzzing, and deterministic testing of concurrent code (testing/synctest). - Performance-oriented mindset, with the ability to write efficient, low-overhead Go code that performs reliably under heavy load. - Hands-on experience with profiling and performance tuning using pprof, benchmarks, and the execution tracer. - Familiarity with Prometheus metrics and instrumentation. - Hands-on experience using AI tools in day-to-day software development. Requirements - Experience designing and maintaining public SDKs or libraries, including Go modules, semantic versioning, and backward compatibility. - Experience with audio stream processing. - Familiarity with SIP and telephony systems. Responsibilities - Develop and maintain end-to-end automated tests using the existing Go-based framework. - Extend and improve the internal test automation framework. - Automate load testing and validation pipelines. - Contribute to and maintain the Go SDK (the library other teams and customers build against) and test suite built on top of that SDK - including load test scripts, healthchecks, etc. - Provide automation tooling (e2e tests framework too) that can be used directly by backend developers, managers, QA, etc. - Automate everything related to testing - turning manual and ad-hoc QA work (functional, load, healthchecks, etc) into automated, CI/CD-integrated coverage. Benefits - The team has built award-winning AI products for tech corporations — devices, voice assistants, products that are actually in the world. - Cutting-edge tech stack: Speech Technologies, NLP, Generative AI (LLMs, diffusion models), voice-first agentic architecture with privacy-first and on-premises deployment. - High engineering bar and real ownership — the team cares about what actually works in production, not what looks good in a demo, and you'll see the impact of your work directly. - Fast career progression — a senior-heavy team and a high volume of real problems means you grow faster than you would anywhere else. - Startup pace with enterprise stability — real clients, real revenue, no bureaucracy. - Fully remote across Europe. - 21 vacation days + public holidays + 5 sick days. - Private English lessons via Preply. - Participation in Employee Stock Ownership Plan (ESOP).