Note: The job is a remote job and is open to candidates in USA. UnitedHealth Group is a global leader in health care innovation, seeking a Principal Linux Platform Engineer to design and operate enterprise Linux infrastructure at massive scale. The role involves building and innovating Linux environments that support mission-critical healthcare applications, while collaborating with various teams to deliver reliable infrastructure services.
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
Skills
- 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
- 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)
Benefits
- A comprehensive benefits package
- Incentive and recognition programs
- Equity stock purchase
- 401k contribution (all benefits are subject to eligibility requirements)
- Far-reaching choice of benefits and incentives
- Flexibility to work remotely from anywhere within the U.S.
Company Overview