Certified

Anton TETERIN is certified:

• GCP PCA, Google Cloud Platform Professional Cloud Architect
• CCNA, Cisco Certified Network Associate
• CompTIA Linux+

More badges on LinkedIn.

Telecommunications:

Finland: Finnish Communications Regulatory Authority (Ficora/Traficom)

HAREC, Harmonized Amateur Radio Examination Certificate - 2nd category (2009--2013) as OH2FNZ HAREC, Harmonized Amateur Radio Examination Certificate - 1st category (2013--) as OG2K Long Range Certificate (2014--) Saudi Arabia: The Communications, Space and Technology Commission (CST/CITC)

Radio Amateur Licence (2021--) as HZ1DZ

More about personal radio amateur callsigns.

Diving:

PADI

Open Water Diver Advanced Open Water Diver

Yachting:

Finland: Traficom

Leisure Craft licence permit