Senior System Administrator/Infrastructure Engineer

About the Role

We are looking for a hands-on System Administrator to manage and support our on-premise IT infrastructure. This role is responsible for maintaining high availability, security, and operational stability of local systems. The ideal candidate is structured, proactive, security-aware, and comfortable working in a regulated environment (fintech).

• Administration of Windows and Linux servers (AD, DNS, DHCP, File Services)

• Management of virtualization platforms (VMware / Hyper‑V)

• Support and maintenance of the on-premise equipment

• Backup administration and restore testing

• Monitoring system health and availability

• Patch management and vulnerability remediation

• Managing local integrations with cloud services and migration to AWS

• Maintaining technical documentation and runbooks

• Participating in BCP/DR testing (including DR site switchovers)

• Vendor coordination for on‑site hardware and connectivity

• Supporting office expansions or relocations

• 3–5+ years experience as System Administrator / IT Infrastructure Engineer

• Strong knowledge of:
• Windows Server (AD, GPO, DNS, DHCP)
• TCP/IP networking fundamentals
• VLANs, routing, firewall basics
• Virtualization (VMware or Hyper‑V)
• Experience with backup solutions
• Understanding of IT security best practices
• Experience in regulated environment is a plus
• Good written and spoken English

• AWS experience

• Linux administration

• Experience with monitoring systems (Zabbix / Prometheus / etc.)

• ITIL understanding

• Scripting skills (PowerShell / Bash)

• Experience in fintech or banking sector

Unlimit is an equal opportunity employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We welcome applications from all members of society irrespective of age, sex, disability, sexual orientation, race, religion or belief.