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Find the best testing solutions for your company

At Sii, we support testing and quality assurance processes in all technological areas, from web, mobile and API, through SAP, Salesforce and ServiceNow, to embedded systems and security. We also use Artificial Intelligence and test automation that allow us to predict system behavior more accurately and prevent failures more effectively. Watch the video, get to know our services better, and visit our website to see, how we can support you.

Offices in Poland

Sii Sweden

Sii Ukraine

Sii India

Automating financial analysis with AI

Berlingske Media enters the digital-first era – platform modernization with Sii Poland

Quality Control Center for ABB – gaining control over IT system quality

E-commerce modernization to support growth and smooth shopping experience

Cyber Resilience Act Demystified: Risks, Regulations, and the DevSecOps Approach

Microsoft Dynamics 365 Contact Center: how Sii helps organizations build modern, AI-powered customer service

How Agentic AI is transforming system integration in modern organizations

Identity Security in practice: Sii Poland joins SailPoint's partner network

Multi‑Agent AI for Embedded Software Development

Take control over your cloud costs with FinOps

DevSecOps Done Right: Embedding Security Without Sacrifices

Leveraging AI and Playwright for efficient UI & API testing

What does the code from Sii Testing Lab look like? Repositories deep-dive

How to set up branch policies in Azure DevOps: Complete guide for PR validation

From automation to autonomy: The evolution towards Agentic Testing, illustrated by mabl

Practical application of AI models in programming. A comparison of GPT-5.4 and Claude Opus 4.7

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Driving toward Vision Zero: Automotive software innovations

Sii Poland and Synthesized join forces to accelerate software testing with AI-driven synthetic data

Sii Poland named Tricentis Alps CEE Partner of the Year 2025: Milestone in Software Quality Assurance

AI-supported test automation. Sii Poland becomes the first mabl partner in the local market

Sii’s Testing & QA team already counts 1 300 experts and continues to grow. Meet the specialists from Testing Services Competency Center and find out more about their captivating projects

The new generation Performance Tests guarantee efficiency and stability – get to know the most effective solutions in modern testing

Sii’s Next-generation performance tests – a new level of automated, AI-powered, and scalable testing

She is developing her career and passions at Sii – meet Emilia, a tester, trainer and Enduro rider

Even more effective, better monitored and fully automatic performance tests – Sii Poland’s partnership with Dynatrace

Effective test automation – how to accelerate product launch on the market by up to 50%

How to make systems available to 250 000 users? Discover how Sii experts helped improve performance tests at IG Group

From a trainee to a tester and trainer – learn about the career path of Krystyna, a graduate of the “Become a Tester” training

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What we do

Industries

Who we are

Career

Trainings

News

Contact

Ta treść jest dostępna tylko w jednej wersji językowej.
Nastąpi przekierowanie do strony głównej.

Einige Inhalte sind nicht in deutscher Sprache verfügbar.
Sie werden zur englischen Version der ausgewählten Seite weitergeleitet.

Einige Inhalte sind nicht in deutscher Sprache verfügbar.
Sie werden auf die deutsche Homepage weitergeleitet.