Senior Systems Engineer (Virtualization)

Turkcell Global Bilgi; Fatih; On-site; TRY 360,000 - 520,000; Full time

Job summary

Turkcell Global Bilgi is seeking an experienced Virtualization/Server Infrastructure professional to manage and optimize the virtualized environment across Windows and Linux systems. The role focuses on high availability, capacity planning, and security, with extensive VMware stack expertise.

Responsibilities include maintenance, DR readiness, automation scripting, and collaboration with IT teams and vendors to ensure service availability and roadmap alignment.

Qualifications

• Bachelor’s degree in Computer Engineering, Electronics Engineering, or a related field.
• At least 4 years of total professional experience in the relevant field.
• At least 4 years of hands-on experience in supporting Server Infrastructure (hardware, Unix/Linux & Windows OS), including installation, configuration, management, troubleshooting, performance optimization, preventive maintenance, capacity planning, monitoring, and security.
• At least 4 years of hands-on experience in virtualization (VMware family: VCF, vSAN, vCenter, vSphere 5/6, vROPS, SRM, vRealize, Log Insight, NSX, VRNI).
• Knowledge to break down engineering tasks into sub-components and delegate to juniors.
• Preferably knowledge and hands-on experience with Hyper-converged Infrastructures (Nutanix, vSAN, vxRail, HP Simplivity, etc.).
• Preferably knowledge of storage systems (SAN, NAS, RAID).
• Preferably experience in building scalable, highly available virtual infrastructures, including cluster management, redundancy, and failover testing.
• Preferably knowledge of disaster recovery technologies.
• Preferably knowledge of ITIL, COBIT, ISO27001, and Service Management best practices.
• Preferably VMware certifications (VCP/VCAP).
• Ability to prepare thorough system documentation with attention to detail.

Responsibilities

• Providing SME for Virtualized Infrastructure; ensuring its management, maintenance, installation, and development.
• Managing and optimizing Virtualization and OS environments (Windows, Linux) for config, HA, and data accounting.
• Ensuring Service Availability and Quality through patches and tech refreshes per roadmap.
• Maintaining and restoring VM backups and snapshots.
• Generating system analyses on capacity, health, and performance to guide improvements.
• Developing and maintaining custom scripts to automate tasks and reduce manual effort.
• Outlining the support and sustainability model for the services.
• Acting as escalation point for lower-tier teams with predefined troubleshooting instructions.
• Performing advanced analysis and troubleshooting of complex issues.
• Leading RCA reviews with vendors when necessary.
• Defining policies to ensure availability, stability, security, and integrity of server infra.
• Providing Continuous Process Improvement by evaluating OS/hardware tech, versions, upgrades.
• Collaborating with other IT teams to manage and resolve complex services.
• Working with business units and external vendors across IT.
• Determining tactical solutions for support and implementation scenarios.

Skills

Server Administration

Virtualization

ITIL knowledge

Disaster Recovery

Documentation

Stakeholder influence

Problem Solving

Ambiguity handling

Education

Bachelor’s degree in Computer Engineering or related field

Tools

VMware vCenter

VMware vSphere

NSX

vROPS

Log Insight

VCF

vSAN

SRM

Job description

• Bachelor’s degree in Computer Engineering, Electronics Engineering, or a related field
• At least 4 years of total professional experience in the relevant field
• At least 4 years of hands‑on experience in supporting Server Infrastructure (both hardware and Unix/Linux & Windows operating systems), including expertise in system installation, configuration, management, troubleshooting, performance optimization, preventive maintenance, capacity planning, monitoring, and security procedures
• At least 4 years of hands‑on experience in virtualization/virtual system management (preferably within the VMware product family: VCF, vSAN, vCenter, vSphere 5/6, vROPS, SRM, vRealize, Log Insight, NSX, VRNI)
• Knowledge and hands‑on experience in breaking down engineering tasks into sub‑components and delegating work to junior engineers
• Preferably knowledge and hands‑on experience with Hyper‑converged Infrastructures (Nutanix, vSAN, vxRail, HP Simplivity, etc.)
• Preferably knowledge and hands‑on experience with storage systems (SAN, NAS, RAID Array, etc.)
• Preferably knowledge and hands‑on experience in building scalable, highly available, and mission‑critical virtual infrastructures, including cluster management, redundancy, and failover testing
• Preferably knowledge and hands‑on experience with disaster recovery technologies
• Preferably knowledge and hands‑on experience working with ITIL, Cobit, ISO27001, and Service Management best practices
• Preferably VMware Certified Professional (VCP) or VMware Certified Advanced Professional (VCAP) certification
• Ability to prepare thorough system documentation with high attention to detail, including requirements documents, operational specifications, system architecture, test plans, and as‑built documentation
• Ability to balance multiple priorities and meet tight deadlines
• Ability to build strong relationships and influence others across the organization
• Effectiveness in handling ambiguity
• Strong analytical and excellent problem‑solving skills

Responsibilities

• Providing Subject Matter Expertise (SME) for Virtualized Infrastructure; ensuring its management, maintenance, installation, and development
• Managing and optimizing the Virtualization and Operating System (Windows, Linux) environments for system configuration, high availability, and system data accounting
• Guaranteeing Service Availability and Quality through patches, component/firmware updates, and/or technology refreshes in alignment with the technology roadmap
• Maintaining and restoring Virtual Machine (VM) backups and snapshots
• Generating system analyses regarding capacity, health, performance, and usage to evaluate and adapt system improvements
• Developing and maintaining custom scripts to increase system efficiency, automate manual tasks, and reduce human intervention time
• Assisting in outlining the support and sustainability model for the implemented service(s)
• Acting as an escalation point for lower‑tier teams in resolving Virtualization Infrastructure issues, using predefined work instructions for troubleshooting
• Performing advanced analysis and troubleshooting of complex issues/problems
• Leading Root Cause Analysis (RCA) reviews for incidents, involving vendors/manufacturers when necessary
• Defining Policies, Procedures, and Instructions to ensure system availability, stability, security, and integrity for the server infrastructure
• Providing Continuous Process Improvement by evaluating operating system and hardware technologies, versions, and upgrades
• Collaborating with other technical service teams to manage, maintain, and resolve complex IT services
• Working collaboratively within the team, across IT, with business units, and with 3rd party vendors or systems
• Working with other infrastructure team members to determine tactical solutions for support and/or implementation scenarios