An IT company from Szczecin that understands how business works
ARITMA SOFT was founded in 2016. Today it is a team of more than a dozen specialists who look after IT infrastructure, ERP systems and Microsoft 365 for companies in Poland and Germany, and increasingly deploy automation and artificial intelligence.
Where we come from

The company was founded by Marcin Mikołajczyk, a manager with more than 14 years of experience in operations, supply chain, manufacturing and IT, including roles as COO and managing director. From that perspective, IT is a tool for running a business, not an end in itself.
That is why every project starts with the question of which business problem it solves. Sometimes the answer is a new server, sometimes an automation that saves the team ten hours a week, and sometimes tidying up what the company already has.
Team
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Marcin Mikołajczyk
CEO
Founder of ARITMA SOFT. More than 14 years in operations, supply chain, manufacturing and IT management, including as COO and managing director. MBA. Responsible for strategy, AI and automation projects and client relationships.
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Alicja Mikołajczyk
Project coordination and client service
Keeps requests, deadlines and documents under control, so clients always know where their matter stands.
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IT
Technical team
Administrators, consultants and security specialists
More than a dozen people working with Windows Server, networks, Microsoft 365, ERP, backups, n8n and local AI models.
How we work
Fixed price before we start
Every project and subscription is quoted before work begins. Extra work needs your approval.
Your documentation is yours
Passwords, configurations and environment descriptions are handed over on request. We don't lock clients in.
Monthly report
You see what we did, how long it took and what we recommend next.
Security by default
MFA, backups and updates are switched on from day one, not sold as add-ons.
Where we work
Our office is at al. Wojska Polskiego 20/5 in Szczecin, Poland. We provide on-site service in Szczecin and the West Pomeranian region and serve companies across Poland remotely, travelling for implementations. For clients in Germany, up to the Berlin area, we work in English by phone and in German or English in writing.
Technology partners
Microsoft, InsERT
Company details
- Company name
- ARITMA SOFT Sp. z o.o.
- Registered office
- al. Wojska Polskiego 20/5, 70-741 Szczecin, Poland
- KRS (National Court Register)
- 0000602169
- NIP (tax ID)
- 9552388923
- EU VAT ID
- PL9552388923
- REGON
- 363742140
- Registry court
- District Court Szczecin-Centrum in Szczecin, 13th Commercial Division of the National Court Register
- Share capital
- 50 000,00 zł
- Management board
- Marcin Mikołajczyk, CEO
- Contact
- +48 501 035 571, kontaktaritmasoft.eu
Let's talk about your IT
Leave your details or call. We will get back to you within one working day and arrange a free audit.