Active Directory Engineer

infrastructure. Deployment, patching and version upgrades of servers and services, following vendor lifecycle and security best practices. Troubleshooting and resolution of incidents related to authentication (Kerberos, NTLM), directory services, DNS, SPNs, keytabs, and LDAP integrations. Integration and support of non-Microsoft systems (e.g., Linux) via LDAP/Kerberos, ensuring seamless authentication. Design and implementation of RBAC-based delegation models to allow other teams to manage objects without impacting service. Automation and scripting using PowerShell to improve operational efficiency and reduce manual intervention. Collaboration with internal IT teams and international counterparts to resolve technical issues and ensure service continuity. Skills: Essential: Minimum 2-3 years’ experience in Active Directory on-premises administration in critical, complex environments (multiple domains and forests). Experience as a Windows Server Systems Administrator covering implementation, maintenance, patching, and upgrades. Strong knowledge of Microsoft Active Directory services: AD Trusts, GPOs, DHCP, DNS, replication, Kerberos/NTLM, and certificates. Experience with authentication protocols and integration with non-Microsoft systems (Linux/Windows, LDAP/Kerberos). Proven ability in patch management, updates, and lifecycle maintenance of domain controllers and related services. Skilled in troubleshooting and log analysis to maintain service availability. Experience with automation and scripting (PowerShell) to improve efficiency and reduce errors. Fluent in English (B2/C1) for effective communication with international teams. Desirable: Knowledge of RBAC and delegated administration. Familiarity with monitoring and auditing tools (SCOM, MECM, Change Auditor). Experience with DFS/DFSN, NTFS permissions, and critical authentication services. ITIL Foundation or equivalent certification. French language skills are a plus. Job Conditions & Benefits

Permanent contract. Work Mode: Hybrid in Madrid (4 days/month in the office) Competitive salary. Flexible payment plan. Remote work assistance. Professional Development: Access to an annual budget dedicated to advancing your skills through professional certifications. Join our expert team, where creativity, commitment and the ability to bring new perspectives are essential to make a difference in a world full of opportunities. Are you ready for your NEXT LEVEL? In Lognext we are committed to equality between women and men and as proof of this we have a registered and published Lognext Equality Plan. We also believe that multiculturalism is a source of values, experiences and knowledge that add value to our projects, which is why we believe in diversity, and we are committed to it. We work every day to create environments where people are treated with respect and dignity no matter where they come from, we do not discriminate based on race