About this role
Senior Lead System Engineer
Job description: Senior Lead System Engineer (AD, DC, DNS, DHCP) Bengaluru, India | Onsite | Full-time | 10–15 Years Experience
About The Role
We are a leading global financial institution looking for a seasoned Active Directory Subject Matter Expert to join our enterprise infrastructure team in Bengaluru. This is a senior technical role that demands deep expertise across directory services, identity management, and core Windows infrastructure — combined with the leadership presence to guide and mentor a high-performing team. Infrastructure Management • Manage and maintain Active Directory infrastructure including domain controllers, forests, trusts, and replication • Administer and troubleshoot DNS and DHCP services to ensure high availability and consistent performance • Design, implement, and manage Group Policies (GPOs) to enforce security and operational standards across the environment • Deploy and manage Public Key Infrastructure (PKI) and Microsoft Certificate Services throughout the certificate lifecycle • Administer and support Distributed File System (DFS) for data replication and access management • Manage Microsoft Key Management Services (KMS) to ensure licensing compliance Operations & Engineering • Perform root cause analysis and advanced troubleshooting for complex infrastructure-related issues • Automate administrative tasks and operational workflows using PowerShell scripting • Monitor system performance, availability, and capacity to ensure proactive infrastructure health • Ensure adherence to security best practices and regulatory compliance standards Collaboration & Transformation • Collaborate with cross-functional teams on migrations, upgrades, and enterprise transformation initiatives • Support planned change activities to minimise risk and operational disruption • Contribute to documentation, SOPs, and knowledge base maintenance Leadership & Mentorship • Act as the technical lead and go-to SME for the team on all Active Directory, Domain Controller and identity-related matters • Provide guidance and mentorship to junior and senior engineers • Engage with stakeholders at all levels with clarity, confidence, and ownership Technical Skills Required • Active Directory (ADDS) — Architecture, design, upgrade, and migration • DNS & DHCP — Configuration, troubleshooting, and optimisation • Group Policy (GPO) — Design, implementation, and troubleshooting • PKI & Certificate Services — Deployment and full lifecycle management • DFS — Namespaces and replication • Microsoft KMS — Setup and ongoing maintenance • PowerShell — Advanced scripting and automation • Windows Server — 2016 / 2019 / 2022 /2025 administration • Knowledge on SCCM, MECM, INTUNE will plus Good to Have
• Experience with Azure AD and Hybrid Identity environments • Knowledge of Active Directory security hardening and auditing tools • Exposure to ITIL processes — Incident, Change, and Problem Management • Hands-on experience in migration, consolidation, or infrastructure transformation projects Certifications (Preferred) • Microsoft Certified: Identity and Access Administrator Associate • Microsoft Certified: Windows Server Hybrid Administrator Associate • MCSE or equivalent What You Bring • 10–15 years of progressive experience in enterprise Active Directory and Windows infrastructure environments • Strong problem-solving and analytical capabilities with a structured approach to troubleshooting • Excellent communication and stakeholder management skills • Ability to lead with authority and collaborate with humility in a fast-paced enterprise setting • A disciplined, security-conscious mindset with a commitment to operational excellence