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We are Power People!

Sii Poland is the leading technology consulting, AI-driven digital transformation, engineering, and business services vendor in Poland. We started as a one-person startup in 2006. Now, we have a team of 7 500+ experts, operating from 14 offices in Poland and 4 offices abroad (Sweden, Ukraine, India, Malaysia). 

  • Min project size
    Undisclosed
  • Hourly rate
    Undisclosed
  • Employees
    1,000 - 9,999
  • Locations
    Warszawa, Poland
  • Year founded
    Founded 2006

14 Locations

  • Warszawa , Poland
  • Gdańsk , Poland
  • Wrocław , Poland
  • Poznań , Poland
  • Kraków , Poland
  • Łódź , Poland
  • Lublin , Poland
  • Katowice , Poland
  • Rzeszów , Poland
  • Piła , Poland
  • Bydgoszcz , Poland
  • Białystok , Poland
  • Szczecin , Poland
  • Toruń , Poland

No Focus Areas have been added yet…

Industries
Financial services
20%
Medical
15%
Retail
15%
Automotive
10%
Information technology
10%
Manufacturing
10%
Telecommunications
10%
Media
5%
Utilities
5%
Clients
Enterprise (>$1B)
75%
Midmarket ($10M - $1B)
20%
Small Business (<$10M)
5%
Certified in:
Custom Software Development Application Testing

Pricing Snapshot

Min. project size Undisclosed
Avg. hourly rate Undisclosed
Rating for cost 4.8 /5

What Clients Have Said

Sii Poland offers competitive pricing and good value for cost, with clients noting favorable pricing structures that align with budgets. Projects are generally delivered on time, with high-quality results, showcasing an efficient cost-benefit ratio across various engagements.

This summary is based on verified Clutch reviews.

Most Common Project Size

< $49,999 based on 14 reviews
< $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

Select a service to see pricing information

Highly Rated Similar Providers

Sii Poland Review Insights

Overall Review Rating

4.9
  • Quality 4.9
  • Schedule 4.9
  • Cost 4.8
  • Willing to Refer 5.0

Top Mentions

Review Highlights

  • Flexibility and Adaptability

    Sii Poland is recognized for their flexibility and adaptability in handling project changes and evolving client requirements. Clients appreciate their ability to integrate seamlessly with existing teams and processes, facilitating effective collaboration.

  • Positive Impact on Business Operations

    Sii Poland's work has led to significant improvements in clients' business operations, including increased efficiency, reduced manual workloads, and enhanced data management capabilities.

  • Impressive Industry Expertise

    Sii Poland's expertise spans various industries, including healthcare, automotive, finance, and e-commerce. Clients appreciate their industry-specific knowledge and ability to apply it to deliver relevant and impactful solutions.

  • Seamless Integration with Client Teams

    Sii Poland's ability to integrate seamlessly with client teams is frequently praised, with clients viewing them as an extension of their internal teams rather than external contractors.

  • Successful Delivery of Complex Projects

    The company has successfully delivered complex projects across different domains, including CRM implementations, data platforms, and e-commerce solutions, contributing to client success and growth.

  • Room for Improvement in Innovation Suggestions

    While generally satisfied, one client suggested that Sii Poland could enhance their service by offering more proactive ideas for application outlook and leveraging past experiences to propose innovative solutions.

Sii Poland Reviews

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B2C E-Commerce Platform Redesign for Gardening Brand

  • Digital Engineering E-Commerce Development Web Development
  • Shopify
  • $10,000 to $49,999
  • May - Sep. 2026
5.0
Quality
4.5
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

“We were very satisfied with the collaboration, communication, and overall execution of the project.”

Sep 4, 2026
Head of Shop, Hasel GmbH - Wurzelwerk Shop
Bart de Noord
Verified
  • eCommerce
  • Witzenhausen, Germany
  • 11-50 Employees
  • Online Review
  • Verified

Sii Poland redesigned and technically implemented a Shopify-based B2C e-commerce platform for a gardening brand. They customized the frontend, integrated existing Shopify apps, and tested the new storefront.

Custom Software Dev & App Testing for Software Company

  • Application Testing Custom Software Development
  • Automation Testing Regression Testing Sanity Testing
  • Confidential
  • July 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0

"Sii Poland has very good technical skills, a great understanding of engineering needs, and a highly motivated team."

Jan 23, 2026
ITV Engineering Group Manager, Aptiv Services Poland S.A.
Jaroslaw Lasek
Verified
  • Automotive
  • Krakow, Poland
  • 1,001-5,000 Employees
  • Online Review
  • Verified

Sii Poland has built a team that handles testing Android builds on a virtual target using Cuttlefish for a software company. The team handles the whole process, from developing tools to sending test results.

Data Consulting for Hearing Aid Company

  • API Development BI & Big Data Consulting & SI
  • $200,000 to $999,999
  • Jan. 2024 - Oct. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They were great in all aspects."

Nov 4, 2025
Senior Director of BI & Analytics, WSA
Saket arora
Verified
  • Medical
  • Denmark
  • 10,001+ Employees
  • Online Review
  • Verified

Sii Poland executed a data strategy for a hearing aid company. The team architected and built the client's data and integration platforms and developed data products for finance, sales, and operations.

Data & Analytics Support Services for FMCG Company

  • AI Development BI & Big Data Consulting & SI Cloud Consulting & SI
  • Machine Learning Azure AI & Machine Learning Azure Analytics Azure Development Azure Migrations Microsoft BI & data solutions Operations & process improvement Azure Cloud Consulting & Implementation
  • Confidential
  • Nov. 2022 - Nov. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The partnership feels effortless and built on mutual trust and accountability."

Oct 31, 2025
Head of IT & Data, Danone
Patryk Hyla
Verified
  • Food & Beverage
  • Warsaw, Poland
  • 10,001+ Employees
  • Online Review
  • Verified

Sii Poland provides data and analytics support to an FMCG company. The team's work covers data engineering, integration, and solution design in Azure, Databricks, and Snowflake environments.

Graphic Design for IT Services Company

  • Graphic Design Print Design Video Production
  • Confidential
  • Jan. 2024 - Ongoing
4.5
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Sii Poland has demonstrated a deep understanding of both design and our business needs."

Oct 27, 2025
Graphic Designer, IT Services Company
Anonymous
Verified
  • Other industries
  • Sweden
  • 1,001-5,000 Employees
  • Online Review
  • Verified

Sii Poland provides graphic design services for an IT services company. Their work focuses on creating print and animated content to support the client's marketing campaigns and trade show presence.

Automation Bot Development for Restaurant Company

  • AI Development Custom Software Development
  • Confidential
  • Jan. 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"They're highly engaged, responsive, and collaborative."

Oct 21, 2025
Process Delivery Manager, Restaurant Company
Anonymous
Verified
  • Other industries
  • Wroclaw, Poland
  • 10,001+ Employees
  • Online Review
  • Verified

Sii Poland has delivered automation bots that handle daily accounting tasks like data entry and reporting for a restaurant company. The goal is to improve data quality and streamline operations. 

Custom Salesforce Development for Smart Payment Terminals Co

  • Application Management & Support Cloud Consulting & SI Custom Software Development
  • $10,000,000 +
  • Jan. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The team was always ready to respond quickly to scope changes and blockers."

Oct 15, 2025
IT Salesforce Manager, Ingenico
Eric de Taevernier
Verified
  • Other industries
  • France
  • 1,001-5,000 Employees
  • Online Review
  • Verified

Sii Poland has developed and maintained a custom Salesforce solution for a smart payment terminals company. The team has integrated the system with internal tools, APIs, and third-party services.

Application Testing for HVAC Components Manufacturer

  • Application Testing
  • Confidential
  • Nov. 2023 - May 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The team consistently delivered high-quality results and demonstrated excellence across all aspects of their work."

Oct 7, 2025
Head of integration & System Testing, Trapeze Switzerland
Harinder Singh Bora
Verified
  • Automotive
  • Zuerich, Switzerland
  • 1,001-5,000 Employees
  • Online Review
  • Verified

Sii Poland provided app testing services for an HVAC components manufacturer. The team handled automation for a digital twin, implemented cross-platform app testing, and created a performance testing framework.

IT Managed Services for IT Company

  • Application Testing IT Managed Services
  • Confidential
  • Aug. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"Their flexible approach and availability have made the collaboration smooth and reliable."

Oct 1, 2025
CTO, OMNILOGY SP ZOO
Tomasz Plonski
Verified
  • Information technology
  • Warsaw, Poland
  • 11-50 Employees
  • Online Review
  • Verified

Sii Poland has been hired to implement Dynatrace as a centralized observability and app performance monitoring tool for an IT company. The team has configured and rolled out Dynatrace across critical systems.

Custom Platform Dev for FinTech Solutions Company

  • Application Testing Custom Software Development Microservices Architecture Services
  • Automation Testing Java Go
  • Confidential
  • Jan. - June 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What stood out was their sense of ownership. They acted like part of our internal team."

Sep 29, 2025
Dirctor of Engineering, Worldline
Robert Vuković
Verified
  • Financial services
  • Hoofddorp, Netherlands
  • 10,001+ Employees
  • Online Review
  • Verified

Sii Poland developed and maintained a custom software platform for a fintech solutions company. The team handled the full development cycle, including implementation, testing, and post-launch support.

Showing 1-10 of 44 Reviews

Locations (14)

Niepodleglosci 69 Av. WarszawaPoland 02-626

1001 - 2000

Contact Sii Poland

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Aker BioMarine

(1)
Aker BioMarine Logotype

Ole Thoresen

Amcor

(1)
Amcor Logotype

Mateusz Pawlak

Aptiv

(2)
Aptiv Logotype

Jaroslaw Lasek

Aptiv Logotype

Paweł Madej

Danone

(1)
Danone Logotype

Patryk Hyla

Diagnostyka.pl

(1)
Diagnostyka.pl Logotype

Bartosz Skłodowski

Displate

(1)
Displate Logotype

Wojciech Wiktorowicz

FRoSTA

(1)
FRoSTA Logotype

Przemyslaw Jezierski

Gadre Infotech Pvt. Ltd.

(1)
Gadre Infotech Pvt. Ltd. Logotype

Shalaka Teli

Infront

(1)
Infront Logotype

Elise Stasiuk

Ingenico

(1)
Ingenico Logotype

Eric de Taevernier

Omnilogy

(1)
Omnilogy Logotype

Tomasz Plonski

Sii Poland

(1)
Sii Poland Logotype

Szymon Wróblak

Teatr Muzyczny w Gdyni

(1)
Teatr Muzyczny w Gdyni Logotype

Mateusz Gigiewicz

The City of Reykjavik

(1)
The City of Reykjavik Logotype

Halldor Gislason

Trapeze Group

(1)
Trapeze Group Logotype

Harinder Singh Bora

Tricentis

(1)
Tricentis Logotype

Michael Weiss

WSA – Wonderful Sound for All

(1)
WSA – Wonderful Sound for All Logotype

Saket arora

Wurzelwerk

(1)
Wurzelwerk Logotype

Bart de Noord

Additional Connections

(11)