Principal Linux Platform Engineer - Remote

Requisition Number: 2369577
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.
What You'll Do
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.
Primary 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

You'll be rewarded and recognized for your performance in an environment that will challenge you and give you clear direction on what it takes to succeed in your role as well as provide development for other roles you may be interested in.
Required Qualifications:

• 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

Preferred Qualifications:

• 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
• Candidates with experience in any of the following will stand out:
  • 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)

*All employees working remotely will be required to adhere to UnitedHealth Group's Telecommuter Policy
Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as, a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). No matter where or when you begin a career with us, you'll find a far-reaching choice of benefits and incentives. The salary for this role will range from $112,700 - $193,200 annually based on full-time employment. We comply with all minimum wage laws as applicable.
Application Deadline: This will be posted for a minimum of 2 business days or until a sufficient candidate pool has been collected. Job posting may come down early due to volume of applicants.
At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone-of every race, gender, sexuality, age, location and income-deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.
UnitedHealth Group is an Equal Employment Opportunity employer under applicable law and qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status, or any other characteristic protected by local, state, or federal laws, rules, or regulations.
UnitedHealth Group is a drug - free workplace. Candidates are required to pass a drug test before beginn ing employment.