Mariusz Kraj
IT OT Director Dyrektor Ds. OT I IT at CoolCoders
Krakow, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolMariusz Kraj is a technology executive and solutions architect with 11+ years of hands-on experience and over 15 years in energy and IT/OT domains, now leading IT/OT strategy for Respect Energy from Krakow. He designs and operates SCADA, EMS, IIoT and cloud-native platforms that integrate PV, wind and storage into trading and balancing markets, including Poland’s first private provider of balancing services. Skilled in industrial protocols (Modbus, OPC UA, MQTT) and cybersecurity standards (NIS2, IEC 62443), he blends deep technical architecture with regulatory compliance and high-availability operations. He has repeatedly built in-house energy platforms and automation that translate market signals into control actions, such as automatic shutdowns during negative prices. As a founder of CoolCoders and former Chief Innovation Officer at Codibly, he pairs entrepreneurial initiative with enterprise delivery and presales architecture experience. Beyond engineering, he’s known for bridging business, trading and compliance teams to turn complex market requirements into scalable, auditable systems.
11 years of coding experience
8 years of employment as a software developer
Inżynier Systemy informatyczne i bazy danych, Inżynier Systemy informatyczne i bazy danych at Wyższa Szkoła Ekonomii i Informatyki w KrakowieMagisterskie Produkcja gier wideo, Magisterskie Produkcja gier wideo at Jagiellonian University
Polish, English
Stackoverflow
608reputation
67kreached
19answers
6questions
Github Skills (68)
mysql-database10
databases10
couchdb10
minio10
netlify10
nodejs10
mongodb10
redis10
api9
postgresql9
heroku9
freemarker9
nextjs9
self-hosting9
docker9
Programming languages (3)
Github contributions (5)
mariusz-kraj/vagrant-ansible
May 2015 - Nov 2015
Contributions:1 release, 4 PRs, 52 pushes in 6 months
mariusz-kraj/docker-php
Oct 2016 - Jul 2017
Contributions:2 PRs, 28 pushes, 8 branches in 8 months
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