Full-Time
Senior Linux Systems Administrator
Linux Systems Administrator
Five Rings Capital
201-500 employees
Proprietary trading firm using data analytics
Compensation Overview
$275k/yr
New York, NY, USA
In Person
 IT & Security (1) |
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- Fluency in Linux administration.
- Experience with BIND, Ansible, Linux Kernel-based Virtual Machine, and Zabbix.
- Knowledge of Google Workplace collaboration and productivity tools.
- Strong communication skills.
- Demonstrated ability to work tasks to completion and tolerate frequent context switches.
- Ability to move and install equipment weighing up to 50 pounds.
- Comfortable with hands-on work, racking and stacking in data centers.
- Experience with Windows administration is not required but a plus; if present, it would be Desirable.
- Knowledge of cybersecurity tools including two-factor authentication, iptables rulesets, Malwarebytes, and fail2ban.
- Proficiency or experience with scripting in Bash and Python is preferred; SQL and Perl are a plus.
- Preference to apply a breadth of experience towards varied responsibilities in a small-shop environment (Desirable).
- Experience with installations of workstations, servers, networking appliances, and data center hardware beyond normal office setups (implied by responsibilities)
- Installations of workstations on trading floors and in offices.
- Installations of servers and networking appliances in data centers, sometimes requiring travel.
- Hardware maintenance.
- Large-scale build-outs, sometimes requiring travel, both domestic and international.
- Installations of office appliances such as printers, phones, televisions, etc.
- Windows administration skills are a plus, but not required.
- Scripting in Bash and Python is preferred.
- SQL and Perl are a plus.
- Debian/Ubuntu experience is preferred.
Five Rings Capital is a proprietary trading firm that uses its own capital to trade financial instruments across global markets, providing liquidity and executing trades for financial institutions and individual investors. Its approach centers on data-driven strategies that quickly move from insight to implementation, often within days or weeks, across both liquid and less common markets. The company differentiates itself through a team-first, meritocratic culture that emphasizes mentorship, collaboration, and analytical thinking, along with a broad market footprint and fast iteration. Its goal is to grow capable minds and generate returns by combining rigorous data analysis with rapid execution in a wide range of markets.
Company Size
201-500
Company Stage
N/A
Total Funding
N/A
Headquarters
New York City, New York
Founded
2009
Simplify's Take
What believers are saying
- Founded in 2009, expanded to London, Amsterdam, Boca Raton offices.
- Employs 201-500 people generating $34.4 million revenue.
- Machine learning optimizes trade execution and quantitative profitability.
What critics are saying
- SEC and CFTC target Five Rings' rapid execution for latency arbitrage in 6-12 months.
- OpenAI and Citadel poach senior quants with 40-60% premiums in 3-6 months.
- Citadel's AI systems obsolete Five Rings' workflow in 12-18 months.
What makes Five Rings Capital unique
- Five Rings Capital trades esoteric markets like crypto derivatives using data-driven strategies.
- Firm executes strategies from insight to implementation within days or weeks.
- Team-first meritocracy fosters collaboration among quants, developers, and traders.
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Benefits
Performance Bonus
Company News
ElectronX has closed a $30 million Series A led by seed round investor DCVC and joined by XTX Markets, Five Rings, NGP, GTS, and JACS Capital, along with returning investors Innovation Endeavors, Systemiq Capital, Equinor Ventures and Shell Ventures.