Production Systems Administrator - FinTech Infra & Automation

optimal sp. z o.o.; Chicago (IL); Hybrid; USD 140,000 - 200,000; Full time

Job summary

Optimal Market Technologies, LLC is seeking a hands-on Systems Administrator to join our growing fintech environment in Chicago or NYC, hybrid work. You and a colleague own the infrastructure layer—Linux, network, storage, and connectivity—and automate routine work to move from tribal knowledge to reliable systems.

Our automated trading system demands low latency; you will monitor, secure, and scale production infrastructure, partnering with development for deployments, performance, and capacity

Qualifications

• Proven hands-on Linux and network administration.
• Strong scripting and automation skills.
• Experience with Infrastructure as Code (tool-agnostic).
• Track record in production support and incident response.
• Experience using AI tools, ideally Claude Code.
• Ownership mentality and clear communication.

Responsibilities

• Own the Linux and network estate across colocation and cloud: deployment, capacity, and failover.
• Automate routine work through Infrastructure as Code.
• Own infrastructure security: hardening, access control, recoverable backups, and security incident response.
• Diagnose and resolve infrastructure issues in production. Take part in incident response and the on-call rotation.
• Own end-to-end connectivity monitoring, from client servers through our systems to the exchanges, and identify where and why it fails.
• Track what breaks in production and why and turn repeat firefighting into automation that prevents it.
• Own recovery runbooks and drills and run the technical side of post-incident review.
• Partner with the development team on deployments, performance tracking and capacity planning.
• On-call coverage is market hours plus a support rotation.

Skills

Linux administration

Network administration

Scripting & automation

Infrastructure as Code

Production support & incident response

AI tools (Claude Code)

Ownership & communication

Tools

Nagios

Ansible

Job description

Optimal Market Technologies, LLC is seeking a hands-on Systems Administrator to join our growing fintech environment in Chicago or NYC, hybrid work. You and a colleague own the infrastructure layer—Linux, network, storage, and connectivity—and automate routine work to move from tribal knowledge to reliable systems.

Our automated trading system demands low latency; you will monitor, secure, and scale production infrastructure, partnering with development for deployments, performance, and capacity