Experienced/Lateral - Linux Systems Administrator

fiveringsllc

London, UKonsitePosted Apr 7, 2025
Posting intelligenceMay be filled, listed long ago

Skills

ansiblepythonperl

About the role

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:

Hardware maintenance

Large-scale build-outs, sometimes requiring travel, both domestic and international

Installations of office appliances such as printers, phones, televisions, etc.

This role will be fully in-person based out of London.

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