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Testing & QA

Ensure the quality, performance, and security of your software with
our testing and test automation services.

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Technologies:

Enhance your software with our expert testing & QA services. We optimize testing processes, ensure embedded system reliability, and uncover vulnerabilities. Our test automation speeds up development, while performance testing ensures smooth operation. Using AI-driven tools, we help you build robust, secure solutions.

OUR OFFER

Test Automation

Test automation for reliable software

We leverage leading tools like Selenium and PlayWright to automate testing at all levels, from unit to UI, ensuring seamless integration with your CI/CD processes. Our services include auditing your current automation level, identifying opportunities for optimization, and implementing strategies that reduce costs and speed up software releases. By optimizing your test automation, we help you achieve faster, more reliable performance and better business risk coverage.

Performance Testing

Performance Engineering to maximize efficiency

We create custom performance testing plans to make sure your systems are stable, efficient, and ready for high demand. Our services cover everything from initial analysis and testing to automation and real-time monitoring, all powered by AI tools. By automating key tests and providing detailed insights, we help you quickly spot and fix issues, ensuring your systems perform at their best under any conditions.

Testing AI

Optimized quality with AI

We use AI to optimize your software testing strategy, enhance test coverage, automate complex scenarios, and identify defects early. Our dual approach involves both testing AI models for accuracy and reliability and using AI to improve traditional software testing processes. This ensures your applications are robust, efficient, and fully prepared for deployment in AI-driven environments.

CSV / GxP

Computer System Validation (CSV) for GxP Environments

We deliver end-to-end CSV aligned with FDA 21 CFR Part 11, EU GMP Annex 11, and ISO 13485, combining risk-based assessments, Validation Master Plans, and IQ/OQ/PQ testing with ongoing compliance maintenance. Leveraging ALM, Jira, and automated test frameworks, we capture requirements, track defects, and generate audit-ready documentation – so your systems remain GxP-compliant, have lower inspection risk, and reach the market faster.

Test Consulting

Improved testing strategies for better performance

We assess and optimize your existing testing frameworks to enhance overall efficiency and performance. Our approach includes a detailed audit of your testing processes, recommendations for process improvement, and implementation of best practices. This leads to reduced testing costs, fewer defects, and smoother project delivery.

Enterprise Testing Tools

Error-free software with enterprise testing solutions

We help you select and implement top-tier enterprise testing tools, including Tricentis and mabl, to streamline QA processes and accelerate software delivery. With AI-powered capabilities like self-healing automation, anomaly detection, and intelligent test generation, these tools enhance efficiency, reduce testing bottlenecks, and ensure high-quality software. Our expertise enables you to optimize testing strategies, minimize risks, and improve overall application performance.

Tricentis

mabl

Synthesized

Embedded Testing

Reliable embedded testing for secure devices

We provide tools and strategies to ensure the security, functionality, and robustness of your embedded systems. Our experts will guide you through the entire QA process, from setting strategic goals and selecting a progress-tracking technique to preparing formal documentation. We not only guarantee the systems' reliability but also compliance with various technical and industry-specific standards for the automotive, healthcare, railway, and payment sectors.

Security Verification

Attack simulations to evaluate security flaws

We simulate real-world attacks via expert penetration testing to uncover vulnerabilities and provide you with precise security insights. Using tools like BURP SUITE and NESSUS, along with custom scripts, we identify potential risks, including OWASP TOP 10 vulnerabilities. Additionally, we conduct thorough security testing, such as application security, network penetration, and social engineering simulations, to deliver strong, reliable protection.

TESting & QA case studies

Building a Quality Control Center to easily assess ABB products

See how we have simplified the product quality assessment process for ABB, a technology leader in electrification and automation. Our specialized competency center, providing a wide range of testing services, has allowed centralized quality testing of systems produced by the customer and third-party suppliers. Standardization of testing has improved the system's overall parameters.

Digital transformation and modernization of a product used by 400 000 business customers

See how our testing services enabled the product upgrade of North America's largest airline reservation distribution system provider. By automating testing and building tools to accelerate test results analysis, we reduced regression from 3 weeks to 2 days, daily compilation time from 27 to 6 hours, and redundant test cases from 36 000 to 9 000.

All automation and performance testing results in one place – ReportPortal implementation

Read about the test reporting solution we implemented to facilitate tracking key performance indicators across teams and making decisions based on results. Conducting a detailed Discovery phase enabled us to select a tool that best meets the client's needs, streamlines internal procedures, and simplifies the work of all teams.

Hi-tech

All automation and performance testing results in one place – ReportPortal implementation

Enhanced efficiency of the performance test automation at a global leader in online trading

See how automation delivered by Sii improved efficiency and increased the importance of the client's performance testing. Our services saved significant time and cost and improved coverage of performance requirements to as many as 115 scenarios supporting 65 500 users per day.

Improved test efficiency through automation for the world's tobacco leader

Discover how we simplified running the regression tests in the client's applications. The Sii team designed and implemented a platform for automating User Verification Tests integrated with the client's website e-commerce system. Our framework covers E2E and API testing for three different applications and offers a wide range of functionality to speed up work and reduce costs.

Improved software quality for the leading investment bank in the US

See how our testing services accelerated product launches and significantly improved software quality for one of the largest private investment banks in the US. Our team of test automation experts optimized testing processes, delivering solutions tailored to the client's requirements thanks to our deep banking industry knowledge.

Banking

Improved software quality for the leading investment bank in the US

Building a Quality Control Center to easily assess ABB products

Digital transformation and modernization of a product used by 400 000 business customers

All automation and performance testing results in one place – ReportPortal implementation

Enhanced efficiency of the performance test automation at a global leader in online trading

Improved test efficiency through automation for the world's tobacco leader

Improved software quality for the leading investment bank in the US

See all case studies

REFERENCES

Discover the feedback from our clients and partners

„Working with the Sii testing team has been an exceptional experience. Their high-quality work, attention to detail, and commitment to delivering reliable results have consistently exceeded expectations. The collaboration has been seamless, with excellent communication and a proactive approach. ”

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Paco Varol BD & Delivery

„Our collaboration with SII Poland unites mabl's AI-native test automation platform with SII's extensive experience in delivering comprehensive IT solutions. This synergy empowers clients to achieve faster release cycles, higher quality software, and increased efficiency across their development processes, ultimately driving innovation and exceeding customer expectations.”

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Blake Kelly Head of Enablement & Partnerships

„Working with SII was a smooth and successful process. The team members were very professional and competent and communication was fluid. The cohesion between SII team and Coarsys team allowed us to successfully work together for a third party. We will renew this experience with great pleasure. ”

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Eric Gilard Financial and Administrative Director (Co-founder)

„Sii has been instrumental in enhancing our quality assurance processes through both manual testing and test automation. Their structured approach ensures comprehensive coverage of all critical scenarios, helping us maintain high standards of quality. What stands out most is their flexibility in adapting to our changing requirements and their consistent, proactive communication throughout the project.”

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Krzysztof Osiński SVP R&D

„Sii's expertise in test automation greatly enhanced our workflows by improving efficiency and accuracy, which significantly reduced manual effort. The team developed a robust automation framework tailored to our requirements, ensuring faster test cycles and consistent quality across releases. Their proactive approach and clear communication made them a reliable partner throughout the project. ”

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Rene Soares Automation Engineer

meet our testing & QA team

Michał Ślęzak

Test Architect

A technical leader working on automation tests and a speaker at testing events, conferences, and meetups. Michał shares knowledge through blogging about test automation and testing. Reading, listening to rap music, traveling, and discovering new cuisines also make him happy.

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Mateusz Tadla

Senior Architect

He works as a Test Architect, ensuring the delivery of high-quality solutions for clients. He pursues his passion for sharing knowledge as a trainer of internal and external courses and a mentor for employees. He specializes in solving problems quickly and effectively, treating new challenges as opportunities for growth. After work, he enjoys staying active – either at the gym or hiking in the mountains.

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Krzysztof Bednarski

Solution Architect

A developer with a tester mindset, Krzysztof has experience at every software development stage in typical agile projects. Delivering properly working and tested code is what he is most proud of. Privately, he is a minor geek, a casual PC gamer, and a movie lover.

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Paweł Juszczak

Delivery Manager

At Sii, Paweł is responsible for providing high-quality IT solutions. His knowledge and technical experience are helpful in providing optimal solutions for clients. He also focuses on building effective and committed teams. After work, he is a husband, father of Adaś and Wojtek, and an admirer of woodworking.

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Artur Dudek

Performance Test Architect

At Sii, Artur prepares offers as well as automation and performance test plans. He is responsible for implementation, performance, and reporting. An innovator who finds areas for optimization even in the best-arranged processes and tools. For him, cycling is the most fun activity, whether it's ROAD, Gravel, MTB, XC, DH, Enduro, or Trekking – he loves them all.

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Wojciech Wieczorek

Architect

Wojciech is responsible for implementing automated tests and leading teams in various projects, focusing on delivering testing solutions optimized for client requirements and expectations. Throughout his career, he has worked on projects across multiple industries and with a range of new technologies, including blockchain and AI. In his free time, Wojciech is a big fan of fantasy and science fiction books, as well as board games.

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Nicole Stodolska

Delivery Manager

Nicole works as a Delivery Manager, leading multiple projects and teams, ensuring that the needs and requirements of clients are well understood and that high-quality testing services are delivered. Software testing is her passion, and she has practical experience as a Test Manager in large and complex projects. Outside of work, Nicole enjoys attending theater performances, musicals, and movies. She is also passionate about traveling.

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Mateusz Psujek

Architect

Mateusz has been working as a test automation developer for about 10 years. His main responsibilities include creating test automation frameworks and integrating them with CI/CD systems. Throughout his career, he has worked with most of the test automation tools available on the market, giving him the expertise to choose the best tool for any task. As a test architect, Mateusz is involved in preparing offers, estimating projects, and developing custom test frameworks tailored to project needs. In his free time, Mateusz enjoys exploring new landscapes and flavors. When not traveling, he brews his own IPA beer, works on DIY projects, 3D prints, studies physics, and relaxes by playing guitar or board games.

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Tomasz Kuran

Test Automation Architect

As a Solution Architect in the testing domain, Tomasz combines knowledge of testing with a passion for programming. His experience spans projects in the banking, telecommunications, gambling, and copyright fee settlement sectors. He specializes in designing optimal test automation solutions for Sii clients, including AI solution testing. In June 2024, he completed postgraduate studies in 'Artificial Intelligence in Business and the Public Sector,' which expanded his expertise in this rapidly developing field. Outside of work, his passions include cycling, car mechanics, and spending time with his family.

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Piotr Chruścielewski

Delivery Manager

Piotr has gained experience in industries such as telecommunications, banking, and pharma. For years, he has been responsible for managing teams in an international environment, focusing on both project delivery and budget management, as well as planning team development strategies and actively participating in the pre-sales phase. His main area of interest is quality assurance, which he views as a key factor for success.

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Marta Cholewińska

Test & Analyst Engineer

Marta serves as a Test Leader in a team focused on data migration between two systems. In addition to her daily collaboration with the team of testers, she remains in constant contact with managers, analysts, and architects to smooth out the often bumpy paths of the project. She strives to foresee the unforeseen, clarify the unclear, plan for the unplanned, and ensure the best possible testing. After work, you can find her with a grinder in hand, restoring old furniture.

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Remigiusz Bednarczyk

Senior Test and Analysis Engineer

At Sii, Remigiusz works as a Test Manager in pharmaceutical projects and as a Lead Technical Assessor, managing a team responsible for technical assessments. For over five years, he has been conducting technical verifications and providing training as an accredited ISTQB® trainer. Additionally, as a member of the Polish Testing Board (SJSI), he reviews training materials, syllabi, and sample questions, and also contributes as a host at industry events. Software testing and quality management are his passions, which he shares through mentoring, communities, training, and by creating content on his website and Sii’s technology blog. After work, he is a happy father, runner, and an enthusiast of Hardstyle Kettlebell training by Pavel Tsatsouline.

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Get to know our experts

OUR EVENTS & INSIGHTS

Driving toward Vision Zero: Automotive software innovations

Leveraging AI and Playwright for efficient UI & API testing

What if we didn’t test at all? What a project without a testing process would look like

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

How to apply AI in test automation with mabl for faster, more reliable results

How can Tricentis Tosca support you in accessibility testing?

Driving toward Vision Zero: Automotive software innovations

Leveraging AI and Playwright for efficient UI & API testing

What if we didn’t test at all? What a project without a testing process would look like

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

How to apply AI in test automation with mabl for faster, more reliable results

How can Tricentis Tosca support you in accessibility testing?

FASTER & SMARTER TESTING WITH TRICENTIS TOSCA

Learn how to improve software quality and optimize costs with automation

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Testing Competency Center Director

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INDUSTRIES WE WORK WITH

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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

Testing & QA

Technologies:

Test automation for reliable software

Performance Engineering to maximize efficiency

Optimized quality with AI

Computer System Validation (CSV) for GxP Environments

Improved testing strategies for better performance

Error-free software with enterprise testing solutions

Reliable embedded testing for secure devices

Attack simulations to evaluate security flaws

Building a Quality Control Center to easily assess ABB products

Digital transformation and modernization of a product used by 400 000 business customers

All automation and performance testing results in one place – ReportPortal implementation

Enhanced efficiency of the performance test automation at a global leader in online trading

Improved test efficiency through automation for the world's tobacco leader

Improved software quality for the leading investment bank in the US

REFERENCES

Driving toward Vision Zero: Automotive software innovations

Leveraging AI and Playwright for efficient UI & API testing

What if we didn’t test at all? What a project without a testing process would look like

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

How to apply AI in test automation with mabl for faster, more reliable results

How can Tricentis Tosca support you in accessibility testing?

Driving toward Vision Zero: Automotive software innovations

Leveraging AI and Playwright for efficient UI & API testing

What if we didn’t test at all? What a project without a testing process would look like

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

How to apply AI in test automation with mabl for faster, more reliable results

How can Tricentis Tosca support you in accessibility testing?

FASTER & SMARTER TESTING WITH TRICENTIS TOSCA

Thank you!

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Marcin Laksander

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What we do

Industries

Who we are

Career

Trainings

News

Contact

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.

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