Linux Engineer

London, New York

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Job Description

Citadel is seeking a top industry technical expert to grow our team dedicated to expanding our Compute platform to our customers. We are seeking a talented engineer skilled in the art of integration who understands the Agile mindset and DevOps philosophies yet is not constrained by how “things are usually done" and is willing to decompose and reinvent systems, processes, and tools. We're looking for a technical expert for one of the largest compute services at Citadel; if you possess that rare mix of depth in Operations, Networking, and Systems Engineering then we are waiting for your application. 
Key Responsibility: 
  • Investigating new ways to improve operations and defining new solutions to solve technically complex compute issues for our customers. 
  • Raising the bar on performance through hardware and OS tuning. 
  • Developing tooling to automate tasks and implement/scale/test infrastructure services. 
  • Building and maintaining systems following infrastructure-as-code principles. 
  • Investigating system variances to affect major services worldwide and solving them proactively before impacting customers. 
  • Diving deep into system and service interdependencies and configurations to find the root of a problem. 
  • Studying and learning from industry-recognized principal and distinguished engineers. 
Required Qualifications:
  • 5+ years of experience with architecture, implementation, and operation of a Linux-based compute environment  
  • Expert knowledge of Linux Environments (RHEL, Centos, Ubuntu) 
  • Automation of build, test, and release of Linux images 
  • Deep experience in performing system performance analysis and tuning  
Preferred Qualifications:
  • Strong development experience in Python or Go 
  • Experience developing APIs 
  • Experience with infrastructure provisioning/management tools (e.g. Ansible, Puppet, Terraform Packer) 
  • Advanced knowledge of TCP/IP networking, architecture, and core technologies (such as DNS, DHCP, HTTP, Routing, and VPN) and experience with virtualization/VMWare for compute infrastructure. 

In accordance with New York City’s Pay Transparency Law, the base salary range for this role is $105,000 to $300,000. Base salary does not include other forms of compensation or benefits.

About Citadel

Citadel is one of the world’s leading alternative investment managers. We manage capital on behalf of many of the world’s preeminent private, public and nonprofit institutions. We seek the highest and best use of investor capital in order to deliver market leading results and contribute to broader economic growth. For over 30 years, Citadel has cultivated a culture of learning and collaboration among some of the most talented and accomplished investment professionals, researchers and engineers in the world. Our colleagues are empowered to test their ideas and develop commercial solutions that accelerate their growth and drive real impact.

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