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