Principal OpenStack Engineer (Post-Sales)

About the role

Mirantis is looking for a Principal OpenStack Engineer (Post-Sales) in its Customer Success team. This is a senior, customer-facing technical role focused on a small portfolio of strategic accounts, acting as the trusted technical partner who understands each customer's platform, roadmap and operations. The engineer works alongside a Technical Account Manager and the wider account team, complementing their commercial and delivery remit with hands-on technical depth. The role is remote.

Key responsibilities

• Own the technical relationship with 5-8 strategic customers, as their primary technical contact across MOSK, MKE, k0rdent and the broader Mirantis portfolio.
• Build a deep knowledge of each customer's architecture, use cases and platform strategy, and maintain a living technical account plan.
• Drive deeper product integration by expanding Mirantis usage into new workloads, clusters and teams, and removing technical blockers.
• Lead technical alignment between customer engineering and platform teams and Mirantis Product and Engineering, turning customer requirements into product input and roadmap guidance into customer-relevant advice.
• Run regular technical cadences such as architecture reviews, upgrade planning, roadmap briefings and health checks, remotely and on-site.
• Partner with Support on high-impact cases, alerting duties and hush severity issues, and close the loop on recurring issues.
• Advocate for customers internally and collaborate with the account team without duplicating their remit.
• Contribute to internal enablement, reference architectures and best practices.

Required profile

• 7+ years in a customer-facing technical role (Customer Engineer, Senior Consultant, Principal Support Engineer, SRE embedded with customers, or equivalent).
• Proven track record of owning the technical relationship with large enterprise customers and expanding platform adoption.
• Expert-level Kubernetes knowledge, strong Linux and networking fundamentals, and excellent written and spoken English.
• Willingness to travel to customer sites, expected 20-30%.

Required skills

• OpenStack core services: Nova, Neutron, Cinder, Keystone, Glance.
• Neutron networking (OVS, OVN, VLAN, VXLAN, SDN) and Cinder backends (Ceph RBD, LVM).
• Preferred: MKE, k0rdent, Helm, GitOps (Argo CD, Flux), Prometheus, Grafana, Loki, Terraform, Ansible, Cluster API, FedRAMP, PCI.

What we offer

• Professional development and training, including conferences and working groups.
• Customized workstation (macOS or Windows).
• Competitive compensation with a strong benefits plan and stock options.