Senior System Administrator

About the Role:

Ryt Bank is seeking an experienced and forward-thinking Senior System Administrator to lead, manage, and evolve our IT infrastructure and end-user computing environment. This senior role is responsible for ensuring the stability, security, and performance of our systems while driving operational excellence and continuous improvement across the organization.

Key Responsibilities:

Infrastructure, Endpoint & Application Management:

• Lead administration and optimization of macOS and Windows endpoints across the enterprise.

• Oversee deployment automation, patch management, and systems hardening.

• Manage and improve Microsoft 365 services (Outlook, Teams, SharePoint, OneDrive).

• Oversee governance and administration of the Atlassian suite (Jira, Confluence, JSM).

• Evaluate and introduce tools and technologies to enhance scalability and reliability.

Identity & Access Management (IAM):

• Own IAM strategy, policies, and standards.

• Lead administration of Microsoft Entra ID including SSO, SCIM provisioning, MFA, and Conditional Access.

• Implement RBAC and conduct periodic access reviews.

• Strengthen identity security posture based on zero-trust principles.

IT Security & Compliance:

• Manage endpoint security platforms including Windows Defender.

• Oversee email and collaboration security including phishing protection.

• Ensure network security including firewall policies, segmentation, and VPN access.

• Conduct regular security audits and support compliance efforts.

• Partner with security teams on incident investigations.

End-User Support & Office Technology Leadership:

• Provide Tier 3 escalation for complex issues.

• Oversee meeting room systems, AV solutions, and conferencing technology.

• Lead design and troubleshooting of office network infrastructure.

• Mentor junior IT staff and establish best-practice support processes.

Procurement, Asset & Vendor Management:

• Lead IT procurement strategy and manage SaaS/hardware renewals.

• Maintain accurate IT asset inventories.

• Manage vendor relationships and negotiate agreements.

IT Operations & Project Delivery:

• Own and enhance onboarding/offboarding workflows.

• Create and maintain IT documentation, SOPs, and knowledge bases.

• Lead IT projects, upgrades, and technology rollouts.

• Identify automation opportunities to improve operational efficiency.

Qualifications & Skills:

• 5–8+ years of experience as a System Administrator or similar senior role.

• Strong expertise in macOS, Windows, and enterprise endpoint management.

• Proficiency in Microsoft 365 and Atlassian tools.

• Deep understanding of IAM concepts and security frameworks.

• Strong networking knowledge (TCP/IP, DNS, DHCP, VLANs, VPNs).

• Excellent troubleshooting, analytical, and communication skills.

• Ability to lead initiatives and mentor team members.

Preferred Certifications:

• ITIL Foundation

• Jamf 100/200/300/400 or similar macOS MDM certifications

• Microsoft MS-102, SC-200, SC-300, MD-102

• CompTIA Security+

• Atlassian Administration ACP-120, ACP-420

• CCNA or equivalent

JR00000460