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Senior System Administrator - Tech

Senior System Administrator - Tech

On-HireCairo, Cairo Governorate, EG
منذ أكثر من 30 يومًا
نوع الوظيفة
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الوصف الوظيفي

Senior System Administrator - Tech

Role Summary

Own 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.

    • Benefits

    Attractive Package

    إنشاء تنبيه وظيفي لهذا البحث

    System Administrator • Cairo, Cairo Governorate, EG

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