Grzegorz Jezierski
Senior Network Supervision Specialist + CERT.NetWorkS Tier 1 at NetWorkS!- Claim this Profile
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Bio
Credentials
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Dlaczego hackowanie sieci jest proste?
SecuritumApr, 2023- Oct, 2024 -
Praktyczny Wireshark
SecuritumApr, 2023- Oct, 2024 -
Poznaj bezpieczeństwo Windows. Część pierwsza: usługi systemowe.
SecuritumMar, 2023- Oct, 2024 -
RODO okiem hakera! Praktyczne szkolenie z ochrony danych osobowych.
SecuritumMar, 2023- Oct, 2024 -
Ransomware ESXiArgs i dobre praktyki ochrony środowisk wirtualnych VMware
SecuritumMar, 2023- Oct, 2024 -
Practical Malware Analysis & Triage
TCM SecurityFeb, 2023- Oct, 2024 -
5G System Overview
Sploty Sp. z o.o. [Ltd.]Jan, 2023- Oct, 2024 -
Managing and Responding to Security Events Using Azure Sentinel
PluralsightNov, 2022- Oct, 2024 -
Microsoft Azure Security Engineer: Monitor Security Using Azure Sentinel
PluralsightNov, 2022- Oct, 2024 -
NSE 2 Network Security Associate
FortinetNov, 2022- Oct, 2024 -
Analyze Endpoint Data with Elasticsearch 7
PluralsightOct, 2022- Oct, 2024 -
Identify Common Cyber Network Attacks with Wireshark
PluralsightOct, 2022- Oct, 2024 -
Introduction to Cyber Security
TryHackMeOct, 2022- Oct, 2024 -
MITRE ATT&CK Defender™ (MAD) ATT&CK® SOC Assessments
CybraryOct, 2022- Oct, 2024 -
Foundations of Operationalizing MITRE ATT&CK
AttackIQSep, 2022- Oct, 2024 -
NSE 1 Network Security Associate
FortinetMay, 2022- Oct, 2024 -
Python Essentials 1
CiscoMay, 2022- Oct, 2024 -
Python od podstaw
Software Development AcademyMay, 2022- Oct, 2024 -
Web Fundamentals
TryHackMeMay, 2022- Oct, 2024 -
CompTIA Pentest+
TryHackMeApr, 2022- Oct, 2024 -
Grafana
UdemyApr, 2022- Oct, 2024 -
Complete Beginner
TryHackMeMar, 2022- Oct, 2024 -
Cybersecurity Essentials
CiscoMar, 2022- Oct, 2024 -
Elastic Security Fundamentals: SIEM
ElasticMar, 2022- Oct, 2024 -
HTML course
SololearnMar, 2022- Oct, 2024 -
Identifying Web Attacks Through Logs
CybraryMar, 2022- Oct, 2024 -
Kali Linux Fundamentals
CybraryMar, 2022- Oct, 2024 -
Networking Essentials
CiscoMar, 2022- Oct, 2024 -
OSINT/OPSEC/analiza dezinformacji
SecuritumMar, 2022- Oct, 2024 -
Developing Ethical Hacking Tools with Python
CybraryFeb, 2022- Oct, 2024 -
Introduction to Cybersecurity
CiscoFeb, 2022- Oct, 2024 -
Penetration Testing and Ethical Hacking
CybraryFeb, 2022- Oct, 2024 -
Pre Security Learning Path
TryHackMeFeb, 2022- Oct, 2024 -
Web Application Penetration Testing
CybraryFeb, 2022- Oct, 2024 -
Advanced Pandas
LinkedInJan, 2022- Oct, 2024 -
Learning Jira Software
LinkedInJan, 2022- Oct, 2024 -
SQL Essential Training
LinkedInJan, 2022- Oct, 2024 -
pandas Essential Training
LinkedInDec, 2021- Oct, 2024 -
LTE Cellular IoT
Sploty Sp. z o.o. [Ltd.]Nov, 2020- Oct, 2024 -
OSINT
Niebezpiecznik.plSep, 2019- Oct, 2024 -
SS7 over IP (SIGTRAN)
Sploty Sp. z o.o. [Ltd.]Sep, 2019- Oct, 2024 -
Voice over WiFi
Sploty Sp. z o.o. [Ltd.]Dec, 2018- Oct, 2024 -
VoIP technology
LeliwaJun, 2017- Oct, 2024 -
PRINCE2® Foundation Certificate
PEOPLECERTDec, 2015- Oct, 2024
Experience
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NetWorkS!
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Poland
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Telecommunications
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200 - 300 Employee
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Senior Network Supervision Specialist + CERT.NetWorkS Tier 1
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Jan 2023 - Present
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Senior Network Supervision Specialist
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Jul 2022 - Present
- monitoring of 2G / 3G / 4G / 5G mobile telephony systems- basic configuration & Fault Management RAN Nokia 2G / 3G / 4G / 5G- basic configuration & Fault Management RAN Huawei 2G / 3G / 4G / 5G- integration, acceptance testing of new radio network components- locating failures and damages in supervised elements of the network and systems as well as their remote removal- maintenance and preventive operations on elements of the mobile network- analysis of quality statistics and movement trends on supervised elements- post-accidental failure analysis- registration and transfer of information on the network status to internal and external entities- cooperation with directly related departments and within tools and applications such as workflow, database, etc.- maintaining contacts with suppliers and operators in the maintenance and development of the RAN network- ensuring the quality of networks and services by verifying KPI statistics- communication with national and international operators of telecommunications networks- performing revoke of PKI certificates Show less
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Network Supervision Specialist
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Jan 2016 - Jun 2022
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Military University of Technology
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Poland
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Higher Education
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400 - 500 Employee
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Telecommunications Institute - Apprentice
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Sep 2013 - Oct 2013
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NetWorkS!
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Poland
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Telecommunications
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200 - 300 Employee
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Departament Operacyjnego Utrzymania i Zarządzania Sieci - Apprentice
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Jul 2012 - Aug 2012
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Education
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2021 - 2022
Software Development Academy
Python from Scratch (280h) -
2015 - 2016
Politechnika Warszawska
Postgraduate studies, Project management: methodologies, practice, techniques, tools -
2013 - 2015
Wojskowa Akademia Techniczna w Warszawie
Master of Science (MSc Eng.), Electronics and telecommunication -
2009 - 2013
Wojskowa Akademia Techniczna w Warszawie
Engineer (Eng.), Electronics and telecommunication
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