Senior System Administrator

🔹Who we are!

At Levi9, we are passionate about what we do. We love our work and together in a team, we are smarter and stronger. We are looking for skilled team players who make change happen. Are you one of these players?

🔹About the project

We are looking for a Senior System Administrator for our internal needs. You will work with the company’s cloud systems, participate in internal projects, and help our SysAdmin team. Please note that this is a full-time, office-based role from our Kyiv office during the first three months. After successfully completing the probation period, you will be able to work in a hybrid format.

🔹Requirements

Infrastructure & Networking:

• Strong networking experience, including:

• Routers — MikroTik

• Switches — Juniper, HP

• WLAN — Aruba, Ubiquiti (UBNT)

• VPN tunnels, IPSec, EoIP

• VLANs, 802.1X, RADIUS

• Firewalls and firewall rule management

• Strong understanding of TCP/IP, DNS, DHCP, routing, NAT and network troubleshooting.

• Understanding of network security principles, firewall rules and security best practices.

• Experience with software and hardware load balancers.

• Experience with proxy and reverse proxy technologies.

• Ability to troubleshoot complex network and infrastructure issues and identify root causes.

Microsoft / Windows Infrastructure:

• Strong experience with Windows Server administration.

• Practical experience with:

• Active Directory Domain Services (AD DS)

• DNS / DHCP

• DFS

• WSUS

• SCCM / Microsoft Configuration Manager

• Group Policy

• Understanding of Active Directory security, Group Policy and identity management.

• Experience with enterprise Windows infrastructure and production environments.

• Experience managing Windows devices.

Virtualization & Cloud:

• Strong experience with VMware vCenter Server and virtualized environments.

• Practical experience with Microsoft Azure.

• Good understanding of Azure infrastructure, including:

• Virtual Machines

• Virtual Networks, Subnets and NSGs

• Azure Storage

• Azure Backup

• Azure Monitor / Log Analytics

• Azure RBAC

• Experience with hybrid on-premises / cloud infrastructure.

• Understanding of cloud security, availability, backup and disaster recovery principles.

• Experience with cloud migrations and infrastructure optimization is an advantage.

Identity, Microsoft 365 & Endpoint Management:

• Experience with Microsoft 365 / Office 365 administration.

• Experience with Microsoft Entra ID (Azure AD), including users, groups, MFA, SSO and Conditional Access.

• Understanding of endpoint security and device compliance policies.

Security:

• Strong understanding of infrastructure and network security principles.

• Experience with firewall configuration and security policies.

• Understanding of VPN/IPSec security.

• Understanding of RBAC, MFA, least-privilege access and Zero Trust principles.

• Experience with system hardening, patch management and security best practices.

Automation & Modern Infrastructure:

• Good PowerShell skills and experience automating administrative tasks.

Monitoring, Backup & Troubleshooting:

• Experience with infrastructure monitoring and log analysis.

• Experience with backup and restore solutions.

Communication:

• Intermediate English (B1–B2 or higher).

• Ability to communicate effectively with technical and non-technical teams.

• Ability to document infrastructure, configurations and technical solutions.

🔹Nice to have

• Practical experience with Linux server administration, including Ubuntu Server, CentOS

• Basic understanding of Linux networking, services, permissions, logs and troubleshooting.

• Microsoft Azure certifications, especially Azure Administrator / Azure Solutions Architect.

• CCNA / JNCIA certification.

• Experience with Microsoft Defender.

• Experience with Terraform / Infrastructure as Code.

• Experience with Docker or Kubernetes.

• Experience with Azure DevOps / GitHub Actions.

• Experience with Windows Server Failover Clustering.

• Experience with enterprise firewall platforms.

• Experience with hybrid identity and Azure AD Connect / Entra Connect.

• Experience participating in cloud migration or infrastructure transformation projects.

• Experience with MDM / Endpoint Management solutions, like Microsoft Intune, Mosyle/Jamf

🔹9 reasons to join us:

• Today we're working with the technology of tomorrow.

• We don't wait for a change. We are the change.

• We're experts in creating experts (Levi9 academy, Lead9 program for leaders).

• No micromanagement. We are free birds with a clear understanding of what the high performance is!

• Learning in Levi9 never stops (unlimited Udemy for business, meetups, English courses, Professional trainings).

• Here you can train your body and mind.

• We've gathered the best locations - comfortable, cozy and pet-friendly offices in Kyiv (5 minutes from Olimpiyska subway station) and Lviv (5 minutes from the Opera Theatre) with regular offline internal events

• We have master's degree in work-life balance.

• We are actively supporting Ukraine with constant donations and volunteering

🔹Simple step to get this job

Click the APPLY NOW button and leave your contacts!