Sii Poland
SII UKRAINE
SII SWEDEN
Sii Poland
SII UKRAINE
SII SWEDEN
As one of the largest testing providers in Europe, Sii delivers automated performance testing using proven commercial platforms and open-source tools.
Sii integrates automated performance tests directly into CI/CD pipelines, ensuring every build is validated for scalability and speed before release. Performance tests help detect performance issues early, prevent defects from reaching production, and maintain stable releases. With continuous background testing, teams can accelerate delivery while preserving quality.
Sii uses APM and observability stack like Dynatrace, AppDynamics, Datadog or Grafana with InfluxDB/Prometheus and Loki, Tempo, and OpenTelemetry to build advanced systems that monitor every layer of the platform ecosystem. Real-time, AI-Driven Observability into the behavior of individual components – from infrastructure to frontend – makes it possible to precisely detect performance bottlenecks at an early stage. You benefit from faster root cause analysis, shorter Mean Time to Recovery (MTTR), and improved stability in production.
We develop in-house performance testing frameworks – often based on open-source tools – to automate the entire lifecycle, from environment preparation to results analysis. This speeds up testing, makes processes more consistent, and cuts down on manual tasks. You save time and money while scaling testing across projects and environments.
Using cloud-based infrastructure, Sii executes high-volume, cost-effective performance tests on demand. We simulate real-world traffic from multiple geographic locations without the need for expensive on-premise setups. This allows you to test peak load conditions at scale and launch with confidence, even under unpredictable user demand.
Sii executes large-scale tests simulating thousands of concurrent users. We validate backend capacity and responsiveness, ensuring stable and reliable systems during launches, campaigns, or unexpected traffic peaks.
Sii validates the performance of business-critical APIs and backend services, including REST, SOAP, gRPC, and message queues. By testing at the protocol level, we ensure scalability and stability of integrations that power web, mobile, and enterprise platforms.
Sii runs browser-level performance tests by reproducing real user behavior with the Chromium engine, enabling accurate measurement of actual page rendering times. This approach makes it possible to test frontend performance under peak load and ensure a stable, high-quality user experience.
Sii runs no-code automated tests to track Core Web Vitals and APDEX scores. These metrics show how your site performs for visitors and highlight areas to improve speed and experience. You gain a better understanding of how to keep customers engaged and build trust in your digital services.
Sii delivers advanced reporting as part of every performance engagement. Test results can be automatically collected, analyzed, and visualized in dashboards, eliminating manual effort. AI-driven anomaly detection highlights unusual patterns instantly, reducing investigation time and improving decision-making. With smart notifications and executive-ready reports, stakeholders gain clear insights into system performance and release readiness.
With Dynatrace and Tricentis Neoload, Sii delivers Next-Gen performance engineering built into the entire software development process. Our holistic approach combines continuous testing, real-time monitoring with AI-support, and scalability. Thanks to trusted technology partnerships, we catch issues early and keep your systems reliable.
Sii partners with industry leaders like Tricentis, Dynatrace, and all biggest cloud providers to deliver advanced, reliable performance engineering services. These trusted partnerships ensure access to the latest tools and best practices while our Build–Operate–Transfer (BOT) model lets you scale dedicated testing teams with confidence and minimal risk.
As a leader in performance testing in Poland, Sii offers one of the most skilled and diverse testing teams in Europe. Our engineers bring deep expertise in non-functional, automated, and performance testing across enterprise technologies and industries, delivering tailored solutions that address both technical and business needs.
Sii combines deep expertise in enterprise technologies with proven know-how for delivering projects across diverse sectors – including those requiring strict system validation. Our experience spans SAP, Oracle, Salesforce, IoT platforms, Citrix, and other mission-critical environments. Using tools like Dynatrace and Tricentis NeoLoad, we help clients in finance, healthcare, automotive, retail, and telecom meet defined KPIs, maintain compliance, and keep systems stable during major updates. By detecting bottlenecks early, we minimize audit risks and ensure consistent performance under demanding conditions.
Read our FAQ
Performance engineering is a systematic approach to ensuring software systems meet defined performance requirements for speed, stability, and scalability throughout the software development life cycle. Unlike traditional performance testing, which often happens late, performance engineering embeds performance considerations from the start, helping address potential performance issues early, optimize system performance, and deliver high performance under real-world conditions.
Classic performance testing checks system behavior under load just before release, while performance engineering integrates performance testing and monitoring across the development cycle. It combines load testing, stress testing, and performance profiling to identify and address performance issues continuously, ensuring optimal performance and reliability throughout software development.
Key benefits of performance engineering include:
A performance engineering team uses a mix of engineering and monitoring tools such as Dynatrace, OpenText LoadRunner, Tricentis NeoLoad, Grinder, k6, Grafana, and JMeter. They support application performance monitoring, testing, and benchmarking, helping teams identify bottlenecks and optimize systems.
Sii’s performance engineering approach combines continuous testing, advanced monitoring, and scalable automation within your development environment. Our experts integrate performance validation into CI/CD pipelines, simulate expected load, and run end-to-end analyses across APIs, web, mobile, and enterprise platforms. This holistic approach helps detect and resolve performance issues early, ensuring stable and reliable systems in production.
Yes. Performance engineering prepares your systems for, among others, peak traffic and load spikes, by using synthetic load to simulate real-world user traffic. This ensures your applications remain stable and responsive during product launches, sales campaigns, or sudden increases in user activity, maintaining high performance and customer satisfaction.
Performance engineering is critical for industries requiring high-performance software systems, such as finance, healthcare, retail, telecommunications, and energy. With Sii’s performance engineering services, critical business systems meet performance requirements, including in regulated industries, and remain reliable during audits and high-traffic periods.
Sii utilizes performance engineering practices such as continuous monitoring, anomaly detection, automated testing and reporting to ensure consistent performance in production. Our teams analyze key metrics, identify bottlenecks, and implement targeted improvements to maintain system stability and optimal performance.
As a leader in performance engineering, Sii combines advanced performance engineering tools, extensive industry experience, and global delivery capabilities. Our teams of certified performance engineers help organizations optimize performance, reduce testing costs, and deliver high-quality, stable software systems that meet user expectations.
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