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LINDA NTUMBA

@lindantumba

IT Operations Administrator · JumpCloud · Microsoft 365 · ISO 27001 · 250+ users · GMT+2 · Available globally

South Africa
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What I'm looking for

IT Operations Administrator seeking remote or onsite roles in IAM, endpoint security, Microsoft 365 & ISO 27001 compliance. Stack: JumpCloud · Okta · Microsoft Defender · Azure · Active Directory. Certs: CompTIA A+ · Network+ · Security+ · AZ-900 · JumpCloud Core. Pursuing AZ-104 & CCNA. Growth path: cloud security & infrastructure.

I'm an IT Operations Administrator based in Johannesburg (GMT+2) with 2+ years of experience in a 4-person IT team managing infrastructure, identity access, endpoint security, and compliance for 250+ users in a BPO environment.

I work effectively in distributed, async-first environments — I've managed VPN infrastructure, IAM systems, and security compliance programmes independently and collaboratively across a remote-capable setup. I'm comfortable owning workstreams with minimal oversight, documenting thoroughly, and communicating clearly across time zones.

Stack: JumpCloud MDM · Okta · Microsoft 365 · Microsoft Defender · Azure · NordLayer VPN · Active Directory · MFA · ISO/IEC 27001 ISMS · PowerShell · Windows Server.

Certifications: CompTIA A+ · Network+ · Security+ · AZ-900 · JumpCloud Core. Pursuing: AZ-104 · CCNA.

I'm looking for remote IT Operations, IT Administrator, or Systems Administrator roles with global teams where I can contribute from day one and grow into cloud security or infrastructure engineering.


Experience

Work history, roles, and key accomplishments

CB
Current

IT Operations Administrator

Certn (BPO)

Apr 2024 - Present (2 years 2 months)

Owned IT operations for a 250-user BPO environment, delivering L1/L2 desktop support and administering Microsoft 365, JumpCloud MDM, and Okta IAM while maintaining endpoint protection and VPN uptime. Aligned operations to ISO/IEC 27001 ISMS, completed an IAM audit and MFA rollout to achieve 100% compliance, and designed phishing prevention training with measurable reporting to leadership.

CL

Client Services Supervisor

Clientele Life

May 2018 - Nov 2023 (5 years 6 months)

Led a team of 15+ agents in a high-volume, SLA-driven environment, coordinating with IT teams to resolve platform/workflow incidents and manage system rollouts and staff training. Maintained quality and compliance processes, strengthening stakeholder communication and escalation handling for later IT operations work.

Education

Degrees, certifications, and relevant coursework

EC

Ensign College

Bachelor of Applied Science, Information Technology

Enrolled in a Bachelor of Applied Science in Information Technology at Ensign College, expected completion in 2027.

SS

Services SETA

National Certificate: Generic Management, Generic Management

Completed a National Certificate (NQF Level 5) in Generic Management via Services SETA in Johannesburg in 2022.

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