Senior System Administrator/Infrastructure Engineer

About Unlimit

Unlimit is a global fintech ecosystem built to eliminate financial borders holding businesses back. The company provides the extensive infrastructure needed to scale globally, integrating payment processing, multi-currency business accounts, BaaS and crypto gateways into a single, intelligent platform.

Across 17 offices globally, Unlimit bridges hyper-local expertise with a high-capacity financial network, giving companies the agility to expand across regions with operational confidence and speed. Driving the evolution of payments, Unlimit is transforming its infrastructure from human-operated fintech into AI-native financial infrastructure — where APIs are consumed by machines, integrations are negotiated by agents, and systems evolve continuously through intelligent automation. Our next users are not only humans. They are AI agents acting on behalf of humans and businesses.

Unlimit serves more than the needs of businesses today; we are building the nervous system for a borderless global economy.

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).

Responsibilities 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

Required Qualifications 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

Nice to Have AWS experience

Linux administration

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

ITIL understanding

Scripting skills (PowerShell / Bash)

Experience in fintech or banking sector

Join Unlimit Team now!

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.