Senior Infrastructure Engineer

Role: Senior Infrastructure Engineer

Job Type: Contract

Critical Skills

• Ceph Storage Engineering: Expert / Advanced
• Proxmox VE: Advanced
• OpenStack: Advanced
• VMware vSphere: Advanced
• Linux Systems Engineering: Expert
• Infrastructure as Code & Automation: Advanced
• Infrastructure Networking: Advanced
• Bare-Metal / Data Center Infrastructure: Advanced
• Resilience, Backup & Disaster Recovery

1. Ceph Storage Engineering: Expert / Advanced

• Design, deploy, operate, troubleshoot, and scale Ceph clusters.
• Strong understanding of:
• MON, MGR, OSD, MDS
• RBD
• CephFS
• RGW / object storage
• CRUSH maps and failure domains
• Pools, placement groups, replication and erasure coding
• Diagnose:
• degraded/undersized PGs
• slow OSDs
• recovery/backfill problems
• capacity imbalance
• latency and throughput bottlenecks
• Understand storage networking, disk/SSD/NVMe characteristics, failure scenarios and performance tuning.
• Ability to design Ceph for large production virtualization workloads, rather than simply administer an existing cluster.

2. Proxmox VE: Advanced

• Design and administer multi-node Proxmox VE clusters.
• Deploy and manage KVM virtual machines.
• Understand Proxmox clustering and quorum.
• Integrate Proxmox with Ceph-backed storage.
• Configure Linux bridges, VLANs, bonding, and storage/network separation.
• Troubleshoot cluster, compute, storage, and VM problems.
• Plan node maintenance and workload evacuation.
• Design HA and failure-domain strategies.
• Perform or plan migrations from VMware/OpenStack into Proxmox.
• Understand backup/recovery architecture for Proxmox environments.
• Automate VM provisioning and lifecycle management through APIs/IaC.

3. OpenStack: Advanced

• Nova
• Neutron
• Cinder
• Glance
• Keystone
• Horizon
• Placement
• OpenStack/Ceph integration
• Compute-node lifecycle
• Networking concepts and troubleshooting
• Instance and image lifecycle
• Upgrade planning and execution
• Troubleshooting control-plane and compute services

4. VMware vSphere: Advanced

• ESXi
• vCenter
• VM lifecycle management
• vMotion
• HA/DRS
• Datastores and storage integration
• Virtual networking / distributed switching
• Cluster maintenance
• Resource contention
• Troubleshooting VM performance
• Migration/export/import concepts

5. Linux Systems Engineering: Expert

• RHEL / Rocky / Alma / Ubuntu
• systemd
• LVM
• multipath
• filesystems
• kernel troubleshooting
• package/repository management
• TCP/IP troubleshooting
• performance analysis
• Bash/Python scripting

6. Infrastructure as Code & Automation: Advanced

• Ansible
• Terraform
• Git
• CI/CD
• REST APIs
• Python and/or Bash

7. Infrastructure Networking: Advanced

• TCP/IP
• VLANs / 802.1Q
• LACP/bonding
• MTU/jumbo frames
• routing
• DNS
• DHCP
• Linux bridges
• virtual networking
• storage networking
• firewall/security zones
• redundant network design

8. Bare-Metal / Data Center Infrastructure: Advanced

• Server hardware lifecycle
• Firmware / BIOS
• RAID/HBA concepts
• SSD/NVMe/SAS
• NIC configuration
• Out-of-band management
• Rack/power/network dependencies
• Hardware failure diagnosis
• Capacity planning

9. Resilience, Backup & Disaster Recovery

• HA versus DR
• RPO/RTO
• VM backup architecture
• Ceph failure domains
• node/rack/site failure scenarios
• restore testing
• capacity headroom during failures
• maintenance without service interruption

Critical Technical Skills

• Advanced hands-on experience designing, deploying, operating, troubleshooting, and scaling Ceph distributed storage environments supporting production virtualized workloads.
• Advanced experience with Proxmox VE, including clustered virtualization, high availability, Ceph integration, networking, storage, lifecycle management, backup/recovery, and automation.
• Advanced experience administering and troubleshooting OpenStack, including Nova, Neutron, Cinder, Glance, Keystone, compute infrastructure, networking, and Ceph integration.
• Advanced experience with VMware vSphere, including ESXi, vCenter, HA/DRS, virtual networking, storage, lifecycle management, troubleshooting, and workload migration.
• Expert-level Linux engineering skills with Red Hat-derived and Ubuntu distributions in large production environments.
• Strong infrastructure-as-code and automation experience using Ansible, Terraform, Git, Python and/or Bash.
• Strong infrastructure networking knowledge including TCP/IP, VLANs, routing, bonding/LACP, MTU, DNS, firewalls, virtual networking, and high-performance storage networks.
• Experience designing and supporting bare-metal server infrastructure, including compute, storage, network interfaces, firmware, hardware lifecycle, and data-center deployment.
• Demonstrated ability to perform large-scale virtualization and storage migrations, including discovery, capacity planning, dependency analysis, migration testing, rollback planning, and post-migration validation.
• Strong understanding of high availability, backup/recovery, disaster recovery, capacity management, monitoring, performance tuning, security, and platform lifecycle management.