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Software development
& maintenance

We provide ready-to-use, modern solutions, supporting the client throughout their entire development process, from concept definition to testing and maintenance

Damian, Dynamics CRM Developer
Damian, C++ Developer
Send your request Join Sii
Send your request Join Sii

We have the scale,
expertise, and references

700+ Java developers

450+ .NET developers

250+ mobile & web developers

600+ embedded & C/C++ developers

250+ help desk experts

Meet our experts

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At Sii, I am an architect of Java-based solutions. I specialize in the telecommunications and pharmaceutical industries. In addition to software development, I support my clients in the development of CI / CD processes on the Azure DevOps platform. I devote my free time to DIY, embedded systems and 3D FDM prints, which I treat as another working tool in my workshop. Read more Read less
Sergiusz Roszczyk | Solution Architect
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On a daily basis, I work with clients to create the optimal architecture of IT systems, while specializing in the area of Big Data and Data Lake.I like all kinds of sports, but long-distance running is what I'm best at. Read more Read less
Łukasz Ryński | Java Architect
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I am responsible for the software development process from pre-sales to delivery, including load estimation, framework and tool selection, team building, deployment, testing and DevOps.Getting to know the infrastructure - road, rail and bicycle - and table games are among my favorite activities. Read more Read less
Piotr Jankowski | Solution Architect
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In my daily work at Sii, I collect, analyze and manage requirements for Puma's product lifecycle management system. Together with system architects, I develop concepts of new solutions to customer needs, which I then translate into tasks for the development team. Relaxing with a good book, finding new places serving delicious food and playing with my French Bulldog - that's it. Read more Read less
Olga Łuczak | Analyst
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I combine over twelve years of experience in UX and interface design, supporting the largest companies in the world. With a formal IT education, I have worked in the digital domain for many industries, including automotive. I am always guided by the goal of creating the most useful and communicative project. Privately, I love taking my family on trips. Read more Read less
Sławomir Molenda | UX Designer
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In my daily work, I support development teams as a lead. I turn initial concepts into working solutions that enjoy stability and low maintenance costs for many years. In-depth analysis, careful planning and simple production rules - these are my key to success. Privately, he is interested in filming, 3D animation and small garden architecture. Read more Read less
Tomasz Dabulis | Architect
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At Sii, I take part in the process of delivering solutions to clients by supporting our teams and ensuring their productivity. Every day with several Scrum teams, also in scaled Agile, using e.g. the SAFe framework. My teams implement projects in various technologies and areas - we use .NET, React, Flutter and many others. In my free time, I really enjoy baking cakes (and sharing them with others!) and spending time with my sons. Read more Read less
Anna Szopińska | Delivery Manager

You have our support

We cover all aspects of software development & maintenance

Custom development

We develop and implement modern, custom-made IT tools, at the same time offering further support of dedicated expert teams

Legacy systems

We maintain, develop, modernize and integrate central systems using RPG and Cobol technology

Application maintenance

Our 1st, 2nd, and 3rd line support teams are available 24/7. Depending on requirements, we build either larger teams working for a specific client or smaller teams carrying out maintenance projects based on one technology

BPM

Through automation of business processes, we help you create a flexible, more productive work environment

EAI

We create scalable integration platforms for your apps to share and consume data

Custom development

We develop and implement modern, custom-made IT tools, at the same time offering further support of dedicated expert teams

Legacy systems

We maintain, develop, modernize and integrate central systems using RPG and Cobol technology

We maintain, develop, modernize and integrate central systems using RPG and Cobol technology

Application maintenance

Our 1st, 2nd, and 3rd line support teams are available 24/7. Depending on requirements, we build either larger teams working for a specific client or smaller teams carrying out maintenance projects based on one technology

BPM

Through automation of business processes, we help you create a flexible, more productive work environment

Through automation of business processes, we help you create a flexible, more productive work environment

EAI

We create scalable integration platforms for your apps to share and consume data

We create scalable integration platforms for your apps to share and consume data

Success stories of our clients

Browse all

We can assist you on every step

01
Idea
02
Analysis & requirements
03
Solution design
04
Development
05
Testing
06
Maintenance

We know your business

Our services are suited to your industry

Industry leaders trusted us

Get an offer

If you have any questions or would like to learn more about our offer, feel free to contact us.

Send your request Send your request

Miguel Sii Sweden Managing Director

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MalwinaSales and Delivery Operations Specialist

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