Web

Our key strengths

200+ developers

in React & Angular

80+ developers

in PHP & Node

30+ specialists

in HTML/CSS

1 150+ developers

in Java & .Net

Scalable cloud hosting solution

Amazon Web Services, Microsoft Azure

Serverless approach

Mobile first

& responsive web design

Meet our experts

I am responsible for maintaining the visual layer of news services belonging to one of the largest media companies in Denmark. Thanks to my work, the latest information reaches thousands of readers in an accessible and engaging way. I spend my free time playing board games with my friends. Read more Read less

Maciej Poleski | Software engineer

At Sii, I deal with the implementation and maintenance of currently operating stores, as well as the implementation of new solutions. After work or a stressful day, I enjoy riding a motorcycle and sport the most. Read more Read less

Paweł Sajenko | Software engineer

At Sii, I deal with the entire software development process: from designing, selecting tools from the AWS / Google palette, securing these applications, to implementing and building a CI / CD with the Cloud Ops team, and of course - the programming itself. Outside of work, I have a lot of activity - including a Samoyed dog, and windsurfing. My hobby is ... chopping wood. Read more Read less

Piotr Kurek | Software engineer

In my daily work at Sii, I collect, analyze and manage the requirements for the Puma product lifecycle management system. Together with the system architects, I develop concepts for new solutions to customer needs, which I translate into tasks for the development team. Relaxing with a good book, finding new places serving delicious food, and having fun with my French Bulldog - that's it. Read more Read less

Olga Łuczak | Analyst

As Lead Resource Manager, I’m responsible for the development of the WebStack Team, which works on web projects using e-commerce solutions. I work closely with Project and Delivery Managers and clients to build the teams meeting our project requirements and deliver the best solutions to our clients. Privately, I often spend my free time cooking, boxing, and cycling. Read more Read less

Angelika Nadolna | Lead Resource Manager

We offer solutions tailored to your needs

Application analysis and design

Sii experts will prepare an extensive analysis and design a fully functional application, providing your recipients with a high comfort of using the software. We support your business in the following areas:

Sii experts will prepare an extensive analysis and design a fully functional application, providing...

Information architecture
UX/UI mockups & graphic design
Solution brief
Mobile features
Technical architecture

Hide text

Implementation of dedicated solutions

Sii teams will perform the entire product delivery process for you: from design, through development, to commissioning, launching and further maintenance. Our experts perform the following tasks:

Sii teams will perform the entire product delivery process for you: from design, through...

HTML5/JavaScript applications designed for mobile & desktop
Custom-made or off-the-shelf content management system (e.g. Drupal) configuration
Integration with various data providers & analytics systems
Serverless or traditional computer power consumption
Cloud-based services configuration

Hide text

Product development

Thanks to the continuous delivery and automation of implementations, Sii's expert teams will introduce new modules whenever there is such a business need. The product backlog is prioritized based on business value, from the most important to the least important tasks. Our tasks will include:

Thanks to the continuous delivery and automation of implementations, Sii's expert teams will introduce...

Modernization of the existing web interfaces
Security (e.g. OWASP Top 10) and performance validation
Implementation of new business requests
Maintaining of domain knowledge
Continuous testing & delivery process
You-build-you-run-it approach

Hide text

Maintenance and support

Sii specialists will help you not only in implementing the application, but also provide ongoing support and carry out service works. The scope of our activities also includes troubleshooting, updating and providing service support. Sii services also include system maintenance and introducing minor changes and new functionalities. To learn more about our services, check out the Service Desk and User Support offer. Our services include:

Sii specialists will help you not only in implementing the application, but also provide...

flexible cooperation models
dedicated maintenance teams
1st, 2nd and 3rd support lines
8/5 or 24/7 support

Hide text

Expert audits and consulting

With the help of Sii's business experts, you will get information about the latest technological trends and the most up-to-date tools. They will also provide you with support in the process of developing your application development strategy.

With the help of Sii's business experts, you will get information about the latest...

Hide text

Our complementary services

Get everything you need from one top provider

Digital customer experience

UX

Mobile

E-commerce

Application maintenance

Nearshoring & offshoring

We're experts in web technologies

Who we are

What we offer

Industries

Career

Trainings

News & events

Blog

We offer full-stack services in the field of web application development, including its analysis, design, implementation, and modernization

200+ developers

80+ developers

30+ specialists

1 150+ developers

Scalable cloud hosting solution

Serverless approach

Mobile first

Application analysis and design

Implementation of dedicated solutions

Product development

Maintenance and support

Expert audits and consulting

Latest news

Sii Poland has created analytical software that helps to restore order and control over the low-code integration platforms....

Slack as Digital HQ. Learn how Sii experts help clients increase the profitability and efficiency of operations

Engineering talent, a solid reputation, and uninterrupted growth. Learn more about Sii Ukraine and the benefits of outsourcing...

Introducing test automation in a GxP governed ecosystem. Find out how Sii Poland used Tricentis Tosca to build a healthcare...

Efficient and surprise-free – intelligent risk management in the healthcare sector

Sii Poland again among the 1% of the most sustainable IT companies – EcoVadis Platinum 2022 certificate for the...

Software development, dance and people are his three greatest passions. Meet Marcin, Architect, who has been combining...

Once you understand the needs well, you will know how to act effectively. Meet Maciek, BI Architect from Sii Warsaw...

Will thirteen be his lucky number? Get to know the story of Krzysztof, an Architect, who initiated the Lodz branch of...

The digitization of the justice system. Find out how Sii Poland experts for over 8 years have been supporting the development...

Learn more about Data & Analytics Competency Center at Sii, which is celebrating its 5th anniversary!

Come meet a real guardian of data quality! Read the interview with Jowita Kukurudza, a Product Owner at Sii Poland!

Passion-driven projects that have strong business value and make a real impact. Meet Sii Sweden and learn how our Power...

Events

File upload error

No file was uploaded

Incorrect file size (max 5MB)

Invalid file format

Empty file

Processing...

Get an offer

Join Sii

We use cookies to ensure that we give you the best experience on our website. Click here to read more or accept and close.

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.

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.