Open To Work
PAWEŁ KALINOWSKI
Międzyrzec Podlaski,Lubelskie
Work Preference
Summary
Senior IT Expert specializing in systems engineering, with extensive experience in Active Directory and Identity and Access Management within enterprise-scale environments. Designed and implemented infrastructure solutions on Windows Server while automating complex processes through advanced PowerShell scripting. Delivered high-availability, scalable identity solutions, ensuring compliance with security standards and business continuity through effective Disaster Recovery protocols.
Overview
14
14
years of professional experience
9
9
Certifications
Work History
IT Senior Analyst - Information Security
AON Sp. Z o.o.
04.2024 - Current
- Identity Governance & Security: Design and implement enterprise-level Active Directory and File Services solutions, focusing on secure authentication, authorization, and automated identity provisioning.
- Compliance: Align AD architecture with security standards and data protection regulations (e.g., GDPR), including the hardening and securing of Privileged Accounts.
- Audit & Monitoring: Establish advanced audit policies and system monitoring to ensure data integrity; integrate AD logs with SIEM solutions in collaboration with Cyber Security teams.
- Operational Reliability: Manage Change Control processes and maintain infrastructure across production and Disaster Recovery (DR) environments; oversee the security patching lifecycle (Security Hotfixes).
- Problem Management: Serve as a Tier 3 escalation point for complex domain technology incidents, performing in-depth Root Cause Analysis (RCA).
IT Engineer
Kyndryl
03.2022 - 03.2024
- Infrastructure Management: Administered and maintained physical and virtual domain controllers in complex multi-domain environments on Windows Server 2016–2022, ensuring reliable access to resources.
- Hybrid Identity: Supported integration of on-premises services with cloud in hybrid model, managing identities within Azure AD (Microsoft Entra ID) and ADFS to streamline user authentication.
- Automation & Scripting: Developed advanced PowerShell tools and scripts to automate daily administrative tasks, permission delegation, and reporting processes.
- Network Services: Configured and optimized critical network services, including DNS, DHCP, and TCP/IP, ensuring efficient site connectivity and replication health.
Technical Service Engineer Expert
Fujitsu Technology Solutions Sp. z o.o.
10.2020 - 02.2022
- Enterprise Infrastructure Management: Managed and optimized large-scale server environments for global external clients, specializing in Windows Server (2008–2019), failover clustering, and virtualization technologies (VMware, Hyper-V).
- Advanced Troubleshooting: Led complex Root Cause Analysis (RCA) for critical system events and infrastructure incidents, providing long-term remediation strategies to prevent recurrence.
- Ensured high availability and reliability of server infrastructure through implementation of best practices in configuration management and monitoring.
- PowerShell Automation: Developed and maintained PowerShell scripts to automate repetitive administrative tasks, streamline server provisioning, and improve overall operational efficiency.
- Acted as senior technical point of contact, collaborating with international customers to align infrastructure support with specific business requirements and service level agreements (SLAs).
Active Directory and Exchange Specialist
PGE Systemy S.A.
05.2017 - 09.2020
- Architectural Design: Designed and optimized scalable Organizational Unit (OU) structures tailored to the business and geographic requirements of a large-scale organization.
- Access Control Policies: Collaborated with HR and Security departments to define provisioning and access policies; enforced security standards using the Group Policy Management Console (GPMC).
- Knowledge Sharing: Conducted specialized training for junior administrators (Service Desk) and authored comprehensive technical documentation and end-user procedures.
Junior Active Directory and Exchange specialist
PGE Systemy S.A.
08.2013 - 05.2017
Software tester
DPD Polska Sp. z o.o.
12.2011 - 02.2013
Education
BA - Logistics, Logistics in the enterprise
Siedlce University of Natural Sciences And Humanities
Siedlce01-2012
Logistics Technician - Logistics Technical School
School of Economics M. Dąbrowska
Międzyrzec Podlaski01-2008
Skills
- Core Identity Services: Active Directory Domain Services (AD DS), Azure AD / Microsoft Entra ID, Identity Lifecycle Management, IAM Frameworks, Hybrid Identity, ADFS
- Security & Compliance: GDPR Compliance, SIEM Log Integration, Privilege Access Management (PAM), Security Assessments, Vulnerability Scanning, Multi-Factor Authentication (MFA)
- Identity governance
- Active Directory
- Infrastructure & OS: Windows Server 2016, 2019, 2022 (Full lifecycle), Physical & Virtual Domain Controllers, VMware vSphere, Hyper-V, Clustering
- Network & Automation: PowerShell Scripting (Advanced), DNS, DHCP, TCP/IP, WINS, Group Policy Management (GPMC), AD CS (Certificate Services)
- Tools & Operations: CommVault, Veeam (Backup/Recovery), SCCM, WSUS, Tanium, Grafana, MS Exchange Server, Change Control Management
- Compliance standards
- Disaster recovery planning
Training
- AI-900: Microsoft Azure AI Fundamentals, 05/01/22, Microsoft Exam
- AZ-900: Microsoft Azure Fundamentals, 04/01/22, Microsoft Exam
- AWS - Fundamentals, 05/01/21, internal training
- Windows Powershell scripting and Toolmaking, 07/01/19, Altkom
- Security of systems in the Active Directory domain of Windows Server 2012 R2, 09/01/18, Altkom
- Negotiations, 06/01/17, internal training
- Administering Microsoft Exchange Server 2016, 05/01/17, AltKom
- Automating Administration with Windows PowerShell, 12/01/16, AltKom
- Microsoft Windows PowerShell v2 for Administrators, 10/01/16, AltKom
- Permissions for SEP do 1kV, 01/01/16, internal training
- Administering and Maintaining Windows 7, 10/01/15, AltKom
- Installing and Configuring Windows Server 2012, 06/01/15, AltKom
- VMware vSphere: Install, Configure, Manage, 11/01/14, AltKom
Personal Information
- Hobbies: fishing, Stock exchange, literature
- Driving License: category B
Certification
AI-900: Microsoft Azure AI Fundamentals
Agreement
I agree to the processing of personal data provided in this document for realising the recruitment process pursuant to the Personal Data Protection Act of 10 May 2018 (Journal of Laws 2018, item 1000) and in agreement with Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation).
Timeline
IT Senior Analyst - Information Security
AON Sp. Z o.o.
04.2024 - Current
IT Engineer
Kyndryl
03.2022 - 03.2024
Technical Service Engineer Expert
Fujitsu Technology Solutions Sp. z o.o.
10.2020 - 02.2022
Active Directory and Exchange Specialist
PGE Systemy S.A.
05.2017 - 09.2020
Junior Active Directory and Exchange specialist
PGE Systemy S.A.
08.2013 - 05.2017
Software tester
DPD Polska Sp. z o.o.
12.2011 - 02.2013
BA - Logistics, Logistics in the enterprise
Siedlce University of Natural Sciences And Humanities
Logistics Technician - Logistics Technical School
School of Economics M. Dąbrowska