Senior System Administrator - Tech

Cairo
Permanent
Full-time

8 days ago
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Senior System Administrator - TechRole SummaryOwn the stability, scalability, and security of our hybrid infrastructure (on-prem + cloud), Act as technical control owner: access control, logging/SIEM, hardening, backup/DR, and vendor/outsourcing tech controls. Mentor L1/L2, lead L3 incidents, automate operations, and maintain clean audit evidence mapped to LAW 139.Key Responsibilities:Operations & Reliability

Ensure >=99.9% availability across servers, VMs, storage, and core services.
Plan/execute OS, database, and middleware patching with validated rollback.
Capacity planning; optimize cloud/on-prem cost and performance.
Build monitoring/alerting (e.g., Zabbix); tune thresholds.

Security & Compliance

Implement CIS baselines for Linux/Windows, network devices, and databases.
Enforce IAM/RBAC, MFA, PAM for privileged accounts; quarterly access reviews and JML controls.
Centralize logs with immutable retention; integrate with SIEM use-cases.
Lead annual BCP/DR tests; achieve RPO/RTO; maintain runbooks and immutable evidence.
Coordinate vulnerability scanning and penetration tests; drive remediation to SLA.

Cloud, Virtualization & Automation

Administer VMware/Hyper-V/Openstack and Azure (compute, storage, virtual networking, identity).

Networking & Perimeter

Manage routing/switching, FortiGate firewalls, IPsec VPNs (incl. partner tunnels - e.g., RAYA), WAF/LB, DNS/DHCP/NTP.
Maintain segmentation (prod/non-prod/mgmt) and secure remote access with MFA and logging.

Data Platforms & Core Services

Administer AD/Azure AD, PKI/internal Enterprise CA (cert lifecycle), 3CX VoIP integration. Platform operations for MySQL (TLS,
backups/replication/HA), backup & restore (Veeam)
Support endpoint security (Kaspersky Next EDR + KES on Ubuntu/Windows).

Change, Incident & Problem Management

Lead L3 incident response and RCAs; maintain problem backlogs and corrective actions.
Chair or contribute to CAB, document change plans and backout complete PIRs.
Mentor Helpdesk/Desktop teams, keep knowledge base and SOPs current.

Requirements· 10+ years in systems administration / infrastructure engineering (increasing responsibility).· Deep Linux (Ubuntu/RHEL) and Windows Server; strong AD/Azure AD.· VMware/Hyper-V and Azure proficiency (VMs, VNets/VPN, storage, identity).· Networking: TCP/IP, VLANs, routing, IPsec, FortiGate policy/NAT, TLS/PKI.· Backup/DR operations with proven restore; replication/failover orchestration.· Security operations: patch/vulnerability management, SIEM integration, baseline hardening.· Scripting/automation: PowerShell, Bash.· ITIL practices (incident/change/problem) audit-ready documentation and evidence handling.Preferred (Nice-to-Have)· Fintech/regulatory experience; FRA technology audits.· MySQL HA (InnoDB Cluster/Group Replication) and performance basics.· Identity governance/PAM, EDR/XDR, DLP, email security gateways.· Experience with Kaspersky KES for Linux and Windows endpoints, 3CX administration.Certifications (Plus)· Microsoft: MCSA/MCSE· Linux/Cloud: RHCSA/RHCE, LFCS/LFCE)· Security: ISO/IEC 27001 Lead Implementer/Auditor, Security+, CySA+.· Networking: Fortinet NSE 4/5, CCNA/CCNP.· ITIL v4 Foundation (or higher).Governance, Risk & Compliance Responsibilities· Map platform controls to FRA LAW 139/2023; maintain live Control-to-Evidence matrix.· Keep policies/runbooks current, perform quarterly access reviews and annual DR tests.· Store immutable evidence (configs, screenshots, tickets, logs) for audits.· Participate in risk assessments, CAB, and post-incident RCAs.BenefitsAttractive Package

On-Hire