Systems Administrator (Multi-Cloud & Security Focus)

We are seeking a highly skilled and experienced Systems Administrator to join our dynamic team. The ideal candidate will possess a deep understanding of multi-cloud environments (AWS and Azure), Active Directory, robust IP networking principles, a strong commitment to security best practices, excellent customer service skills, and the ability to mentor others in the IT department. You will be responsible for the design, implementation, and maintenance of our critical infrastructure, ensuring its reliability, security, and scalability. This is an on-site position that also requires participation in an on-call rotation and availability during scheduled maintenance windows.

Responsibilities:

• Active Directory Management:
  • Maintain Active Directory Domain Services (AD DS) environments.
  • Manage Group Policy, AD replication, and site management.
  • Perform user and computer account management, including complex permission structures.
  • Implement and maintain AD security hardening.
  • Troubleshoot AD issues.
• AWS Administration:
  • Design, implement, and manage AWS environments using core services (EC2, S3, VPC, IAM, and RDS).
  • Implement AWS security best practices and monitor AWS resources using CloudWatch.
  • Manage AWS cost optimization.
• Azure/Entra ID Administration:
  • Manage Azure environments using core services (Virtual Machines, Virtual Networks, Azure Storage, Azure Monitor).
  • Manage Entra ID (Azure AD), including user and group management, application registrations, and conditional access policies.
  • Implement and maintain Entra ID Connect for on-premises Active Directory synchronization.
  • Implement Azure security best practices.
• IP Networking:
  • Manage and troubleshoot TCP/IP networking, including subnetting, routing, and network protocols (DNS, DHCP, HTTP/HTTPS, SSH).
  • Analyze network traffic and diagnose network issues.
  • Manage hybrid network connections.
• Security:
  • Implement and maintain computer and systems security best practices.
  • Perform vulnerability management and patch management.
  • Utilize security monitoring tools (SIEM, IDS/IPS).
  • Respond to security incidents and perform malware analysis.
  • Implement security auditing and compliance.
  • Implement and maintain least privilege access.
• Customer Service:
  • Provide prompt and professional technical support to end users.
  • Clearly communicate technical information to non-technical users.
  • Resolve user issues efficiently and effectively.
  • Maintain a positive and helpful attitude.
• Mentorship:
  • Mentor junior team members on technical skills and best practices.
  • Provide guidance and support for career development.
  • Share knowledge and expertise with the team.
• Maintenance Windows:
  • Attend scheduled maintenance windows every other month on the third Saturday.
• On-Call Rotation:
  • Participate in an on-call rotation to provide 24/7 support for critical systems.

Qualifications:

• Bachelor’s degree in Computer Science, Information Technology, or a related field (or equivalent experience).
• Minimum of 5+ years of experience in systems administration. 
• Expertise in Active Directory Domain Services (AD DS).
• Proficiency in AWS and Azure cloud platforms.
• Strong knowledge of Entra ID (Azure AD) and hybrid identity management.
• Deep understanding of TCP/IP networking, network protocols, and ports.
• Strong skills in computer and systems security best practices.
• Experience with scripting languages (PowerShell, Bash, Python).
• Excellent troubleshooting and problem-solving skills.
• Strong communication and teamwork skills. 
• Relevant certifications (e.g., Microsoft Certified: Windows Server Hybrid Administrator Associate, AWS Certified SysOps Administrator – Associate, Azure Administrator Associate, CompTIA Security+, CISSP) are highly desirable. 

Preferred Qualifications:

• Experience with automation tools (Ansible, Chef).
• Experience with security frameworks (NIST, ISO 27001).