System Administrator (Critical Infrastructure Support Initiatives) - Think Tank, Inc.

PROJECT DESCRIPTION: Think Tank is seeking an ideal candidate to be included in a proposal effort for an upcoming opportunity with the NYC Department of Social Services (DSS). The Critical Infrastructure support initiative entails the design, installation, customization, testing, and implementation of several enhancements to the Agency's Network, and Data Center infrastructure environments. These infrastructure related updates are crucial for the efficient maintenance and functioning of the network infrastructure, supporting the Network related security controls such as Switches, Firewalls, IDS, IPS, Proxy servers, etc., as well as its security components in the Data Center, Remote sites, as well as external entities (OTI, NYS, etc.) If you are chosen for this position, we will subit your resumé with our proposal. Upon award, you will receive a formal job offer.

•Directory Services Management

•Administer and maintain Active Directory (AD) infrastructure.

•Monitor and manage AD replication and domain controllers.

•Implement and enforce group policies and access control policies.

•Perform regular security audits and vulnerability assessments.

•Manage user accounts, groups, and organizational units (OUs).

•Conduct regular backups and disaster recovery testing for AD.

•Integrate and manage authentication services, such as LDAP and Kerberos.

•Exchange On-Premises Management

•Monitor and maintain Exchange server health and performance.

•Manage and troubleshoot email delivery and routing issues.

•Perform regular backups and disaster recovery testing.

•Implement and maintain email security measures, including spam filtering and antivirus solutions.

•Manage mailbox databases, including capacity planning and optimization.

•Conduct software updates, patches, and upgrades for Exchange servers.

•Configure and manage email retention policies and compliance archiving.

•Microsoft Entra ID Administration

•Configure and manage Microsoft Entra ID (formerly Azure Active Directory).

•Implement and manage identity and access management (IAM) policies.

•Monitor and secure Entra ID tenant against unauthorized access and threats.

•Configure single sign-on (SSO) and multi-factor authentication (MFA) solutions.

•Integrate on-premises AD with Microsoft Entra ID for hybrid identity solutions.

•Manage application registrations and API permissions.

•Perform regular security reviews and compliance audits for Entra ID.

•Performance Optimization and Reliability

•Develop and maintain security policies and procedures.

•Implement high-availability and failover solutions.

•Monitor and troubleshoot performance issues across the infrastructure.

•Plan and execute system upgrades and migrations.

•Scalability and Futureproofing

•Design and implement scalable solutions to accommodate future growth.

•Stay updated with the latest technologies and industry best practices.

•Provide recommendations for future improvements and upgrades.

•Plan and execute infrastructure modernization projects.

•Security and Compliance

•Implement advanced security measures and monitor for potential threats.

•Ensure compliance with industry standards and regulatory requirements.

•Conduct regular security audits and penetration testing.

•Develop and maintain security policies and procedures.

•Support and Training

•Provide technical support and troubleshooting assistance.

•Develop and maintain documentation for all systems and procedures.

•Train in-house IT staff on best practices and new technologies.

•Offer guidance and support during major incidents and outages.