About the Role
We are seeking a highly skilled Authentication & Identity Infrastructure Engineer to join an international Engineering Services division operating across key European financial hubs (including Krakow, Paris, and Brussels). In this role, you will be part of a specialized team dedicated to designing, securing, and maintaining mission-critical identity and access management (IAM) platforms. You will ensure maximum system availability, resilience, and security across a large-scale, complex enterprise environment.
Key Responsibilities
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Identity & Directory Management: Oversee, configure, and maintain multi-forest and multi-domain Active Directory (AD) environments, LDAP services, and Microsoft Azure Entra ID (global tenant administration).
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Federation & Single Sign-On (SSO): Manage Active Directory Federation Services (ADFS), handling claims, metadata, and token-based authentication to deliver seamless SSO capabilities.
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Multi-Factor Authentication (MFA) & Security: Support and enhance MFA solutions, including Windows Hello for Business and RSA SecurID (RSA Authentication Manager).
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Architecture & Governance: Develop and review technical architecture designs, establish security baselines for authentication systems, and maintain comprehensive technical documentation.
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Automation & Engineering: Leverage PowerShell scripting to automate routine administrative workflows, operational checks, and configuration deployments.
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Compliance & Audit Readiness: Participate in security assessments, vulnerability remediations, and internal/external IT audits to meet strict financial sector compliance standards.
Required Technical Skills & Experience
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Enterprise Experience: Proven track record of designing, supporting, and troubleshooting complex identity and authentication infrastructures within large-scale enterprise environments.
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Core Active Directory: Deep expertise in Active Directory, forest trust architectures, and advanced troubleshooting.
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Challenging Authentication Protocols: In-depth understanding of Kerberos, NTLM, SAML, OAuth, and PKI/certificate-based authentication.
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Cloud & Hybrid Identity: Hands-on experience configuring and managing Microsoft Azure Entra ID (formerly Azure AD).
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Automation: Advanced PowerShell scripting skills for infrastructure automation and management.
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General Infrastructure Knowledge: Solid understanding of core IT infrastructure components, including Windows Server OS, virtualization, enterprise networking, and storage systems.
Desirable / Nice-to-Have
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Experience managing RSA Authentication Manager / RSA SecurID ecosystems.
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Familiarity with ITIL frameworks (Incident, Problem, and Change Management via ServiceNow) and Agile delivery practices.
Soft Skills & Operational Mindset
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Strong analytical and root-cause troubleshooting skills under pressure.
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Ability to translate complex infrastructure issues into clear, concise summaries for stakeholders.
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Collaborative team player with excellent communication skills in English.
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