Mariusz Pietrzyk
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Mariusz Pietrzyk Email & Phone Number

Location: Łódź, Łódzkie, Poland 6 work roles 2 schools
3 work emails found @ragnarson.com 2 phones found area 306 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 3 work emails · 2 phones

Work email m****@ragnarson.com
Direct phone ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
COO
Location
Łódź, Łódzkie, Poland
Company size

Who is Mariusz Pietrzyk? Overview

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Quick answer

Mariusz Pietrzyk is listed as COO at Ragnarson, a company with 26 employees, based in Łódź, Łódzkie, Poland. AeroLeads shows a work email signal at ragnarson.com, phone signal with area code 306, and a matched LinkedIn profile for Mariusz Pietrzyk.

Mariusz Pietrzyk previously worked as Angel Investor at Ragnarson Fund and Senior Ruby on Rails developer at Ragnarson. Mariusz Pietrzyk holds Master'S Degree Computer Science from University Of Lodz.

Company email context

Email format at Ragnarson

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{first}@ragnarson.com
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AeroLeads found 3 current-domain work email signals for Mariusz Pietrzyk. Compare company email patterns before reaching out.

Profile bio

About Mariusz Pietrzyk

I’m building one of the first self-managed companies in Poland - Ragnarson.We are doing this on the premise that people are smart enough to make their own choices and don’t need managers, bosses or supervisors to tell them what to do.The company is fully transparent, employees see the whole budget with colleagues’ rates, clients’ rates and my salary as the owner - basically all the expenses and all the revenue streams.Together, we have defined our shared values. Based on those values, financial context and our mission, the team defines its OKRs, hires and fires and takes care of the clients from the first call.Every member of the company sets their own salary and nobody interferes.We have been a remote first company from the very beginning. However, we do have two offices - one in Łódź and one in Berlin.We are a software development agency that has been on the market since 2006. Right now we explore fully decentralized systems and Blockchain ecosystem.I started my career as a Junior Ruby developer in 2007, while still an undergraduate. In 2010 I got my Master’s degree in Computer Science with a Master’s thesis about the upcoming age of cloud computing.The same year at Ragnarson we bootstrapped our first product called Shelly Cloud. Back then we didn’t even know what a startup was. It was the first Heroku-like Ruby hosting in Poland and one of the few in Europe.It was a great project to work on. However, our heavy focus on the technical side and user experience left marketing and sales almost unattended to.We were developing the platform for more than 6 years with a team of up to 10 people. We grew past 100 paying customers and hundreds of virtual servers.In the end we broke even and after unsuccessful attempts to secure financing we shut the project down to focus solely on building Ragnarson.It was the greatest entrepreneurship lesson I could have imagined, leaving me with lifelong friends, some of whom are now my colleagues at Ragnarson.

Listed skills include Ruby, Ruby On Rails, Postgresql, Git, and 43 others.

Current workplace

Mariusz Pietrzyk's current company

Company context helps verify the profile and gives searchers a useful next step.

Ragnarson
Ragnarson
COO
Łódź, PL
Website
Employees
26
AeroLeads page
6 roles

Mariusz Pietrzyk work experience

A career timeline built from the work history available for this profile.

Angel Investor

Current
Ragnarson Fund

We provide impactful AgTech startups with cash, advisory and/or software development services. Our aim is to help them get into seed/A round.Why Agriculture?* Full of big and important problems to our society* It still has a low level of digitalization* It is impacted by climate change and reinforces it* Farmers have little to no leverage compared to input.

Feb 2019 - Present

Coo

Current

Łódź, Łódzkie, PL

  • Ragnarson is a software house which specializes in building web applications for startups. We are using Ruby and agile principles in our daily work which allows us to speed up the development process and guarantee high.
  • Rapid Minimum Viable Product (MVP) development
  • Rewriting legacy applications
  • Product development and maintenance
  • Merging products after acquisitions
  • Building and maintaining dedicated hosting solutionsIn a span of 10 years we have helped dozens of startups to build their products and grow their business. Their success motivates and encourages us to build an even.
Jul 2014 - Present

Senior Ruby On Rails Developer

Łódź, Łódzkie, PL

Responsible for development of PokerRing.com and PokerOlymp.de

Sep 2007 - Jun 2014

Co-Founder & Cto At Shelly Cloud

Łódź, Łódzkie, PL

Designing and building cloud based hosting for Ruby applications.https://shellycloud.com

Feb 2010 - Mar 2016

Senior Ruby On Rails Developer

Object Reload
Nov 2009 - Mar 2010
Team & coworkers

Colleagues at Ragnarson

Other employees you can reach at ragnarson.com. View company contacts for 26 employees →

2 education records

Mariusz Pietrzyk education

Master'S Degree Computer Science

University Of Lodz

Education record

Xxiii Liceum Ogolnoksztalcace W Lodzi
FAQ

Frequently asked questions about Mariusz Pietrzyk

Quick answers generated from the profile data available on this page.

What company does Mariusz Pietrzyk work for?

Mariusz Pietrzyk works for Ragnarson.

What is Mariusz Pietrzyk's role at Ragnarson?

Mariusz Pietrzyk is listed as COO at Ragnarson.

What is Mariusz Pietrzyk's email address?

AeroLeads has found 3 work email signals at @ragnarson.com for Mariusz Pietrzyk at Ragnarson.

What is Mariusz Pietrzyk's phone number?

AeroLeads has found 2 phone signal(s) with area code 306 for Mariusz Pietrzyk at Ragnarson.

Where is Mariusz Pietrzyk based?

Mariusz Pietrzyk is based in Łódź, Łódzkie, Poland while working with Ragnarson.

What companies has Mariusz Pietrzyk worked for?

Mariusz Pietrzyk has worked for Ragnarson, Ragnarson Fund, Shelly Cloud Sp. Z O. O., and Object Reload.

Who are Mariusz Pietrzyk's colleagues at Ragnarson?

Mariusz Pietrzyk's colleagues at Ragnarson include Wojciech Borowski, Amadeusz Chomiak, Krzysztof Nowak, Oskar Sekutowicz, and Jonasz Grochowski.

How can I contact Mariusz Pietrzyk?

You can use AeroLeads to view verified contact signals for Mariusz Pietrzyk at Ragnarson, including work email, phone, and LinkedIn data when available.

What schools did Mariusz Pietrzyk attend?

Mariusz Pietrzyk holds Master'S Degree Computer Science from University Of Lodz.

What skills is Mariusz Pietrzyk known for?

Mariusz Pietrzyk is listed with skills including Ruby, Ruby On Rails, Postgresql, Git, Web Applications, Nginx, Test Driven Development, and Linux.

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