Active Directory Architect & Security Specialist

Outokumpu Chrome Oy; Katowice; On-site; PLN 120,000 - 160,000; Full time

Job summary

Outokumpu Chrome Oy in Katowice, Poland, seeks an experienced Active Directory Specialist to maintain secure, scalable directory services supporting our global business.

You will manage AD DS, DNS, GPO, and related components, provide 2nd/3rd level support, and drive improvements across the AD environment while collaborating with Cyber Security and Infrastructure teams. Fluent English is required.

Qualifications

• Bachelor's degree in IT, Information Systems, or equivalent experience.
• 5+ years experience administering enterprise Active Directory environments.
• Strong knowledge of AD DS, DNS, Group Policy, AD CS, trusts, replication, Kerberos, and LDAP.
• Experience troubleshooting complex authentication and identity-related issues.
• Understanding of AD security, privileged access, hardening, and identity governance.
• Familiarity with ITIL processes, change management, and documentation.
• Automation experience with PowerShell is an advantage.
• Strong analytical, communication, and collaboration skills with fluent English.

Responsibilities

• Manage and continuously improve Active Directory services, including AD DS, DNS, Group Policy, AD CS, trusts, replication, and service accounts.
• Provide expert 2nd and 3rd level support and participate in an on-call rotation.
• Lead troubleshooting and root cause analysis for authentication, authorization, Kerberos, LDAP, DNS, replication, and Group Policy issues.
• Plan and implement AD upgrades, patching, testing, and lifecycle activities to ensure platform stability and compliance.
• Translate security requirements into AD best practices, including least privilege, privileged access, tiered administration, and hardening.
• Drive standardization, automation, monitoring, documentation, and operational improvements across the AD environment.
• Support audits, access reviews, risk remediation, and security compliance initiatives.
• Collaborate with Cyber Security, Infrastructure, OT teams, suppliers, and business stakeholders to deliver reliable directory services.
• Mentor colleagues and contribute to continuous improvement across the Infrastructure team.

Skills

Active Directory

AD DS

DNS

Group Policy

Kerberos

LDAP

PowerShell

Troubleshooting

Communication

Fluent English

Education

Bachelor's degree in IT/Information Systems

Job description

Outokumpu Chrome Oy in Katowice, Poland, seeks an experienced Active Directory Specialist to maintain secure, scalable directory services supporting our global business.

You will manage AD DS, DNS, GPO, and related components, provide 2nd/3rd level support, and drive improvements across the AD environment while collaborating with Cyber Security and Infrastructure teams. Fluent English is required.