Senior System Administrator - Aparıcı Sistem Administratoru (Staff/IT/Hybrid)

Azercell haqqında

Azercell-də biz Azərbaycan üzrə mobil, sabit və B2B həllərinin #1 provayderi olaraq davamlı rəqəmsal gələcəyin formalaşmasında iştirak edirik. Biz innovasiyaya əsaslanaraq liderlik edir, təhlükəsiz və miqyaslana bilən infrastruktur qurur, rəqəmsal transformasiyanı sürətləndirir və fərdlər, bizneslər və dövlət sektoru üçün fasiləsiz təcrübələr təqdim edirik. Biz məlumat, süni intellekt və avtomatlaşdırma ilə güclənərək peşəkar və inklüziv komandamız sayəsində çeviklik, etibarlılıq və uzunmüddətli dəyər yaratmaq öhdəliyi ilə fəaliyyət göstəririk.

Job Description

This role is designed to ensure the stable, secure, and efficient operation of the company's enterprise virtualization platforms, Linux/Unix-based server infrastructure, and mission-critical services. The ideal candidate combines deep hands-on expertise in enterprise virtualization and software-defined infrastructure with strong Linux administration skills and solid experience across physical infrastructure - servers, enterprise storage, and SAN environments - and is comfortable operating in heterogeneous, large-scale enterprise or telecom environments.

Key Responsibilities:

• Virtualization Platform Management: Administer and support enterprise virtualization platforms — hypervisor clusters, software-defined storage, and platform lifecycle management; participate in design, capacity planning, expansion, and upgrade activities across multiple data centers.

• Software-Defined Networking & Cloud Delivery: Support and develop software-defined networking, load balancing, and cloud management/self-service platforms enabling multi-tenant resource delivery; contribute to virtualization-adjacent services such as backup and replication.

• Linux Infrastructure Management: Administer and support Linux-based server infrastructure (RHEL/Rocky/AlmaLinux, Ubuntu); manage OS lifecycle, patching, performance tuning, and troubleshooting.

• Physical Infrastructure & Storage: Manage enterprise server hardware, storage systems (SAN/NAS), and FC SAN fabrics; support LUN provisioning, zoning, multipathing, and storage migration activities.

• Automation & Configuration Management: Develop and maintain automation using Ansible, Python, and Bash; apply Infrastructure as Code principles for configuration and lifecycle management at scale; actively reduce manual operational toil.

• Monitoring & Observability: Design and maintain monitoring, alerting, and logging pipelines; ensure proactive visibility into system health, capacity, and performance across the infrastructure stack.

• High Availability & Disaster Recovery: Ensure HA and fault tolerance of mission-critical systems; maintain and validate Backup and DR procedures; document and test RPO/RTO targets.

• Security & Compliance: Apply security hardening best practices across virtualization and Linux/Unix layers; understanding of SELinux/AppArmor concepts and their role in system security; support vulnerability patching lifecycle and audit/compliance requirements.

• Incident Management & Troubleshooting: Lead complex incident resolution and root cause analysis across virtualization, OS, storage, network, and hardware layers; drive post-incident reviews and systemic improvements.

• Capacity Planning: Analyze infrastructure trends and proactively plan for growth across compute, storage, and network resources.

• Documentation & Collaboration: Produce accurate technical documentation (HLD/LLD, runbooks); mentor junior and mid-level team members; work closely with networking, security, and development teams.

Key requirements:

• Education: Bachelor's degree in Computer Science, IT, Information Systems, or a related field.

• Experience: Minimum 5 years as a Senior System Administrator in virtualization- and Linux-heavy enterprise environments; experience in a DevOps-oriented or cross-functional infrastructure team is a strong advantage.

• Virtualization: Deep hands-on expertise in enterprise virtualization platforms (e.g., VMware vSphere, RHV/OpenShift Virtualization, KVM-based stacks, or Hyper-V) — cluster design, HA, lifecycle management, and troubleshooting; experience with software-defined storage and networking concepts.

• Operating Systems: Strong expertise in Linux administration (RHEL/Rocky/AlmaLinux, Ubuntu Server).

• Physical Infrastructure: Hands-on experience with enterprise server hardware, storage systems (SAN/NAS), and FC SAN switching; solid understanding of storage concepts — block/file/object storage, RAID, multipathing, zoning, and replication.

• Containers & Cloud-Native: Practical experience or strong familiarity with container platforms and orchestration (Kubernetes, OpenShift, or equivalent) — considered a significant advantage given ongoing platform modernization.

• Backup & Replication: Practical experience with enterprise backup and replication solutions.

• Automation & IaC: Automation-first mindset with hands-on experience in Ansible; practical scripting skills in Python and/or Bash; understanding of Infrastructure as Code principles and their application in day-to-day operations.

• Networking Fundamentals: Solid understanding of TCP/IP, DNS, DHCP, HTTP/HTTPS, VLANs, load balancing, and firewall concepts, particularly in virtualized and software-defined network contexts.

• Monitoring: Experience with monitoring and alerting platforms (Zabbix, Prometheus/Grafana, ELK/OpenSearch, or equivalent).

• Security Hardening: Ability to apply and enforce security best practices across virtualization and Linux/Unix systems.

• Problem Solving: Strong troubleshooting skills across virtualization, OS, storage, network, and application layers.

• Documentation: Ability to produce clear HLD/LLD documents, runbooks, and technical reports.

Preferred Skills:

• Experience with multi-tenant cloud management and self-service platforms.

• Experience with S3-compatible object storage platforms and concepts such as erasure coding and data protection policies.

• Experience with legacy UNIX platforms (HP-UX, Solaris, Tru64, or similar).

• Familiarity with identity and access solutions (MFA, LDAP/Kerberos, directory service integration) in Linux environments.

• Experience with web server and proxy technologies (NGINX, Apache, HAProxy or similar).

• Experience in telecom or other large-scale, high-availability enterprise environments.

What we offer you:

At Azercell, we believe our people are our greatest strength. When you join our team, you become part of a forward-thinking, purpose-driven company that values innovation, collaboration, and personal growth. Here's what you can expect:

• A Purposeful Career – Be part of projects that shape the digital future of Azerbaijan.
• Continuous Learning & Development – Access to exclusive training, e-learning platforms, and career growth programs.
• Innovative Work Environment – Join a team that embraces new ideas and technologies.
• Health & Wellbeing Support – Comprehensive medical insurance and wellness initiatives.
• Flexible work arrangements: Our flexible work policies empower you to balance your professional and personal life, fostering a culture of trust and autonomy.
• Competitive Compensation Package – Fair and performance-based rewards.
• Inclusive Culture – A diverse, respectful, and empowering workplace where every voice matters.

Are you ready to shape your future with confidence? Apply today.