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Middle System Administrator

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JatApp

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Location:
United States

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Category:
IT - Administration

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Contract Type:
Not provided

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Salary:

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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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