Experienced/Lateral - Linux Systems Administrator

Confirmed live in the last 24 hours

Five Rings

New York

On-site

Posted December 22, 2025

Job Description

About Five Rings

Five Rings is a proprietary trading firm founded with a vision of combining strategy, innovation and technology to succeed in today’s global markets. With offices in New York, Boca Raton, London and Amsterdam, Five Rings trades in various domestic and international markets, both established and esoteric. Our team constantly seeks new opportunities, analyzes their risks and rewards, and creates strategies and tools to capitalize on them.

We have an open culture and encourage the flow of knowledge and ideas between all areas of the firm.

About the Role

We are seeking a hands-on professional for our growing systems administration team.

Systems Administrators are responsible for the workstations and servers of our rapidly expanding trading operations. In addition to all systems work both on the desktops and in the datacenters, Five Rings Systems Administrators frequently interact with users at various levels all across our organization.

We are a Linux shop both on the server side and the trader desktops.

Our firm runs Windows servers very rarely and Windows desktops as needed.

Skills & Attributes:

Fluency in Linux administration is a must
Experience in Debian/Ubuntu preferred
Strong communication skills
A demonstrated ability to work tasks to completion and tolerate frequent context switches
Experience with:
- BIND
- Ansible
- Linux KVM
- Zabbix
- Google workplace collaboration and productivity tools
- Some Windows administration skills are a plus, but not required
Experience scripting in bash and python is preferred, SQL and Perl a plus
Knowledge of cybersecurity tools including 2FA, iptable rulesets, Malwarebytes, fail2ban, etc.
Ability to move and install equipment weighing up to 50lbs
Preference to apply a breadth of experience towards varied responsibilities in a small-shop environment
Comfortable with hands-on work, racking and stacking in datacenters is commonplace

Responsibilities include:

Installations of workstations on our trading floors and in offices
Installations of servers and networking appliances in data centers, sometimes requiring travel

Additional tasks include:

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