Senior Systems Administrator - AI-Driven Cloud & Security

The Nuclear Company; Colombia; On-site; COP 384,787,000 - 454,748,000; Full time

Benefits offered by this job

Competitive compensation packages

401k with company match

Medical, dental, vision plans

Generous vacation policy, plus public,

Job summary

The Nuclear Company is seeking a Senior Systems Administrator to securely administer and scale Microsoft 365, Entra ID, endpoints, AWS, and Windows/Linux servers. This role serves as the Tier 3 escalation point and collaborates with Infrastructure, Cybersecurity, HR, Legal, and Engineering to ensure compliance and auditable services.

The ideal candidate is hands-on, security-minded, and skilled at automating high-value work.

Qualifications

• Bachelor's degree or equivalent practical experience, plus at least 5 years of progressive systems administration experience.
• Strong Microsoft 365 and Microsoft Entra ID administration experience, including Exchange Online, SharePoint Online, Conditional Access, security groups, RBAC, licensing, and identity lifecycle management.
• Hands-on endpoint and server administration experience using Intune across Windows, macOS, and iOS; Windows Server, Active Directory, and Group Policy; and familiarity with RMM concepts.
• Advanced PowerShell automation skills, a solid command of networking fundamentals (TCP/IP, DNS, DHCP, and VLANs), and a disciplined troubleshooting approach for complex, multi-system issues; ability to use approved AI-assisted tools responsibly in technical workflows.

Responsibilities

• Administer and securely scale Microsoft 365, including Exchange Online, SharePoint Online, mail flow, retention, sharing, and licensing.
• Administer Microsoft Entra ID, SSO, MFA, Conditional Access, RBAC, and identity lifecycle processes.
• Audit user and administrator accounts, security groups, roles, and licenses; remediate orphaned identities, excessive access, and legacy configuration issues.
• Configure and operate DLP and insider-risk controls in partnership with Cybersecurity and Legal.

Skills

PowerShell automation

Networking fundamentals

AI-assisted tooling

Security mindset

Education

Bachelor's degree in Computer Science/IT or related field

Tools

Intune

NinjaOne

Azure

AWS

Windows Server

Active Directory

PowerShell

JAMF Pro

Job description

The Nuclear Company is seeking a Senior Systems Administrator to securely administer and scale Microsoft 365, Entra ID, endpoints, AWS, and Windows/Linux servers. This role serves as the Tier 3 escalation point and collaborates with Infrastructure, Cybersecurity, HR, Legal, and Engineering to ensure compliance and auditable services.

The ideal candidate is hands-on, security-minded, and skilled at automating high-value work.