Mainframe DBSystems Software Programmer - Remote

Optum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities.

Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together.

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? At United Health Group, technology isn't just a support function-it's a strategic differentiator helping improve healthcare outcomes for millions of people.

We operate some of the largest and most sophisticated infrastructure environments in the industry, and we're looking for a Senior Open Shift Kubernetes Administrator to help lead our cloud-native platform transformation. This is an opportunity to engineer, automate, and operate enterprise-scale Open Shift environments that power mission-critical healthcare applications. You'll work with cutting-edge technologies, solve complex platform challenges, and influence the future direction of our Kubernetes strategy.

As a senior member of our Kubernetes Platform Engineering team, you will be responsible for the reliability, scalability, security, and automation of our Open Shift ecosystem. Join our team to help steward our on-prem Cloud deployed on High-Performance Compute infrastructure.

• Administer, maintain, and optimize enterprise Open Shift Kubernetes platforms deployed to our High-Performance Compute infrastructure
• Manage large-scale Open Shift clusters using:
  • Open Shift Console
  • Open Shift CLI (oc)
  • Advanced Cluster Manager (ACM)
  • Infrastructure automation tools
• Design and implement automated deployment, configuration, and lifecycle management solutions
• Develop Infrastructure-as-Code and automation frameworks using Ansible and scripting
• Troubleshoot complex Kubernetes, container, networking, and platform issues
• Collaborate with developers to improve application reliability, observability, scalability, and performance
• Implement enterprise security controls and platform hardening standards
• Support high availability, disaster recovery, and multi-cluster architectures
• Drive platform modernization initiatives and operational excellence through automation
• Participate in architecture reviews and help define the future state of enterprise container platforms

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.

• Bachelor's degree or equivalent experience
• 5+ years administering Kubernetes platforms in production environments
• Experience with Ansible and automation frameworks
• Experience with container technologies and image creation
• Experience troubleshooting enterprise-scale platform issues
• Experience deploying and administering Open Shift Virtualization (Kube Virt) to support both containerized and virtual machine workloads
• Experience implementing and supporting enterprise monitoring, logging, and alerting solutions using Grafana, Prometheus, Loki, Alert Manager, and Thanos
• Experience with Git Action pipeline deployments for Open Shift, bash scripting using oc for controls, deployments, and working closely with application teams on deployments, new name spaces, affinities, and sizing
• Experience with cross-datacenter, high availability failover, and load balancing (F5 & haproxy) between multiple datacenters and K8s clusters
• Solid knowledge of Kubernetes internals including:
  • Scheduling
  • Networking
  • Storage
  • Ingress and load balancing
  • Operators
  • Cluster lifecycle management
• Proficiency in shell scripting and at least one programming language such as Python or Go
• Proven deep expertise with Red Hat Open Shift
• Proven solid Linux administration skills, preferably Red Hat Enterprise Linux
• Proven excellent communication and technical documentation skills
• Demonstrated security-first mindset with expertise in platform hardening, identity and access management, vulnerability remediation, encryption, and regulatory compliance

• Red Hat Open Shift certification
• Candidates with experience in any of the following will stand out:
  • Open Shift deployed to IBM LinuxONE and IBM Z environments
  • s390x Linux architecture
• Experience with Git Ops, CI/CD pipelines, and Infrastructure-as-Code
• Experience supporting high-availability Kubernetes environments
• Experience supporting mission-critical applications with strict uptime requirements
• Knowledge…