Middle System Administrator Jobs

JatApp

Location:
United States

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

We are looking for an experienced System Administrator to help maintain a stable, secure, and modern IT infrastructure built on Zero Trust Network Access principles. If you have experience with Cloudflare ZTNA, work with macOS/Windows, Linux, value automation, and want to influence infrastructure development, we would love to have you on our team.

Job Responsibility:

Support and access: User support (HelpDesk), technical assistance, macOS/Windows configuration
Access management via Cloudflare ZTNA/Cloudflare Access (SSO, security policies)
Google Workspace and Microsoft 365 administration
Implementation and support of MDM solutions (Jamf, Intune, Kandji)
Infrastructure and systems: Administration of Linux (Ubuntu/Debian) and Windows Server systems
Support and development of internal infrastructure, performance optimization
Working with virtualization: VMware, Proxmox, Hyper-V
Configuration and support of network infrastructure (VLAN, VPN, Firewall)
Backup and disaster recovery configuration
Infrastructure security: updates, patching, access control
Monitoring and automation: Server and service monitoring (Zabbix, Prometheus, Grafana)
Routine task automation (Bash, Python, Ansible)
Collaboration with DevOps and developers

Requirements:

3+ years of experience in system or network administration or 2–4 years as a System Administrator / DevOps / Infrastructure Engineer
Practical experience with Zero Trust, preferably Cloudflare ZTNA
Confident knowledge of Linux and basic understanding of Windows Server
Knowledge of Windows / macOS, Azure AD, MDM, SSO, SCIM
Understanding of network protocols: DNS, DHCP, NAT, TCP/IP
Experience with Docker or Kubernetes
Experience with monitoring systems
Ability to write scripts (Bash and/or Python)
Basic knowledge of security (firewall, SSL, audit)
English — Upper-Intermediate+
Experience with AWS / Azure / GCP cloud services would be an advantage

Nice to have:

Experience with Mikrotik, Ubiquiti, AWS, PowerShell, Zabbix, Syslog
Certifications: CCNA, MCSA, Cloudflare Certified Zero Trust Specialist

What we offer:

Mental and Physical Health: health care is a must, so at JATAPP, we will cover health insurance for you
Benefits Cafeteria: choose what you like most — sports, food delivery, home office supplies — and we will cover your expenses under available budget
Knowledge sharing: such events are our way to grow together. We gather to discuss new trends, share our own insights, and elevate one another
Remote-First Culture: it’s up to you whether to work remotely or at our coworking space
Personal Equipment Policy: no tech troubles — you’ll get a MacBook and everything you need for comfortable and efficient work
Learning and Development Opportunities: it's a real pleasure for us to watch you learn, so we're happy to cover your learning and development costs, as well as English courses. Besides this, everyone in JATAPP gets access to the Projector Library
Community of like-minded people: at JATAPP, you will work in a team of like-minded people who are ready to launch a product, run a marathon, or climb Hoverla together
Creative freedom: we encourage initiative and creative thinking, so with us, you can be yourself and have the freedom of professional expression
Legal & Finance Support: we cooperate with the best financiers and lawyers who will be ready to help solve any of your questions upon request
Time-off Policy: 20 vacation days per year, 5 days for sick leave without medical confirmation, unlimited sick leaves with a doctor's note, 3 personal days, and 2 days off for special events or occasions

Additional Information:

Job Posted:
December 09, 2025

Employment Type:

Fulltime

Work Type:

Remote work

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Middle System Administrator