Principal Linux Platform Engineer - Remote

UnitedHealth Group•Eden Prairie, MN

1d•$112,700 - $193,200•Remote

About The Position

Optum Tech is a global leader in health care innovation. Our teams develop cutting-edge solutions that help people live healthier lives and help make the health system work better for everyone. From advanced data analytics and AI to cybersecurity, we use innovative approaches to solve some of health care’s most complex challenges. Your contributions here have the potential to change lives. Ready to build the next breakthrough? Join us to start Caring. Connecting. Growing together. Design and Operate Enterprise Linux Infrastructure at Massive Scale Do you want the opportunity to build and innovate with autonomy? Do you enjoy pushing platforms and infrastructure to new levels of performance and reliability? Do you want to work alongside talented teammates who value collaboration, trust, and positive intent? UnitedHealth Group is seeking a Linux Platform Engineer who is passionate about Linux, virtualization, automation, and enterprise infrastructure. This role will be responsible for engineering and operating highly scalable Linux environments that support mission-critical healthcare applications across our enterprise. If you enjoy building Linux platforms, designing virtualization architectures, automating infrastructure, and solving complex operational challenges, this role offers a unique opportunity to work on some of the largest Linux environments in the industry. As a Linux Platform Engineer, you’ll help design, automate, and operate enterprise Linux and virtualization infrastructure that forms the foundation of our technology ecosystem. Join our team to help steward our on-prem Cloud deployed on High-Performance Compute infrastructure. You’ll enjoy the flexibility to work remotely from anywhere within the U.S. as you take on some tough challenges. For all hires in the Minneapolis or Washington, D.C. area, you will be required to work in the office a minimum of four days per week.

Requirements

Bachelor's degree or equivalent experience
10+ years of Linux systems administration and engineering experience
Solid experience deploying and supporting KVM virtualization environments
Experience with Ansible automation and Infrastructure-as-Code methodologies
Experience implementing and supporting enterprise monitoring, logging, and alerting solutions using Grafana, Prometheus, Loki, AlertManager, and Thanos
Solid experience automating infrastructure deployment, configuration, and operational processes using Ansible, scripting, and Infrastructure-as-Code practices
Experience administering Red Hat Identity Manager (IdM), including LDAP, Kerberos, SSSD, certificate management, and enterprise authentication services
Experience with cross-datacenter, high availability failover, and load balancing (F5 & haproxy) between multiple datacenters and K8s clusters
Deep expertise with Red Hat Enterprise Linux
Expert-level knowledge of: Linux operating systems, SELinux, Linux firewalls, Package management, System performance tuning
Solid knowledge of storage, encryption, and Linux filesystem technologies
Proficiency in shell scripting and at least one programming language such as Python, Go, Rust, Java, or C
Proven excellent troubleshooting and analytical skills
Proven solid verbal and written communication skills
Demonstrated security-first mindset with expertise in platform hardening, identity and access management, vulnerability remediation, encryption, and regulatory compliance

Nice To Haves

Red Hat certifications or equivalent practical experience
Experience with large-scale KVM virtualization deployments
Experience with disaster recovery, resiliency, and high-availability solutions
Experience supporting enterprise-scale Linux environments in regulated industries
IBM LinuxONE and IBM Z environments
s390x Linux architecture
Logical Partitions (LPARs)
OSA, FCP, RoCE, and Crypto Express adapters
HMC administration and DPM mode
SAN architectures and Brocade zoning
CHPIDs and PCHIDs
Enterprise-scale virtualization and infrastructure automation
Knowledge of Kubernetes and OpenShift environments
Familiarity with distributed storage platforms such as IBM Spectrum Scale (GPFS)

Responsibilities

Administer and maintain large-scale Red Hat Enterprise Linux environment deployed to our High-Performance Compute infrastructure
Design, deploy, and support KVM-based virtualization platforms
Build and maintain automation solutions using Ansible, Python, and shell scripting
Configure and support IBM Spectrum Scale (GPFS) storage environments
Implement system security, hardening, encryption, and compliance controls
Manage Linux networking including: Bonding, Bridging, VLANs, macvtap
Configure and administer Linux storage technologies including: LVM, dm-crypt, LUKS2
Troubleshoot complex operating system, virtualization, networking, and storage issues
Collaborate with Kubernetes, network, security, and application teams to deliver reliable infrastructure services
Drive platform modernization through automation and standardization initiatives