Cloud & Network Infrastructure Engineer

About UltaHost: Ultahost is global web hosting company with a fully remote team. We’re expanding our infrastructure and preparing to launch a new suite of cloud hosting products for customers worldwide. Job Overview We’re looking for a highly skilled, hands-on Cloud & Network Infrastructure Engineer who can confidently operate and scale network, virtualization, storage, and hosting infrastructure across global data centers-and who can solve issues fast, automate aggressively, and contribute new ideas that improve our platform and product offerings. If you’re a builder-operator who lives at the intersection of networking + virtualization + storage + hosting, this role is for you. What You’ll Do (Key Responsibilities) · Design, deploy, and manage scalable cloud VPS infrastructure across multiple data centers. · Build and operate Proxmox clusters (primary platform), ensuring HA, performance, and stability. · Work with and/or support additional virtualization and cloud platforms when needed: · KVM / QEMU, Proxmox VE, VMware vSphere/ESXi, Microsoft Hyper-V · OpenStack, oVirt / RHV, Xen, LXD/LXC, Virtuozzo (bonus) · Implement resource planning, capacity forecasting, and performance optimization across virtualization stacks. · Develop and improve provisioning pipelines, templates, images, and deployment standards. Storage & Ceph · Install, manage, and optimize Ceph (MON/OSD/MGR/RGW) for high-performance and fault-tolerant storage. · Improve storage performance, balancing, replication, recovery, and cluster scalability. · Implement backup and snapshot strategies, and ensure storage availability for VPS and cloud services. Network Engineering · Configure, monitor, and troubleshoot Juniper switching/routing hardware. · Own network performance optimization: routing stability, throughput, latency, packet loss, and capacity planning. · Work with routing and HA technologies (BGP/OSPF/VRRP, VLANs, LACP, etc.). · Design secure and reliable interconnects between data centers and cloud infrastructure. Security: Firewalls, VPNs & Hardening · Configure and manage firewalls, VPNs, access policies, and network security controls. · Implement security best practices: segmentation, ACL policies, patching strategy, vulnerability mitigation, and incident response readiness. · Work with secure remote access, bastion models, and least-privilege access. Operating Systems & Hosting Stack · Manage production hosting/server environments on: · Linux: Ubuntu, Debian, AlmaLinux, Rocky Linux, CentOS (legacy), Red Hat Enterprise Linux (RHEL) · Windows Server: 2016 / 2019 / 2022 (IIS/AD is a plus) · Maintain and optimize web server stacks and hosting infrastructure: · Nginx, Apache, LiteSpeed / OpenLiteSpeed · Reverse proxy setups, SSL/TLS, caching, log analysis, performance tuning · Bonus exposure: PHP-FPM, MySQL/MariaDB, Redis, HAProxy, Keepalived Monitoring, Reliability & Incident Response · Monitor infrastructure performance and proactively resolve incidents to minimize downtime. · Build alerting and observability (metrics/logs/traces) and improve real-time monitoring workflows. · Create and implement disaster recovery plans, failover designs, and redundancy strategies. · Participate in on-call/shift operations as required for a global hosting platform. Documentation & Collaboration · Maintain detailed infrastructure documentation: configurations, diagrams, policies, and runbooks. · Collaborate with DevOps, Support, Product, and Leadership teams to ensure reliability, availability, and scalability. · Recommend architecture improvements and propose new product/feature ideas for Ultahost’s cloud offerings. What We’re Looking For (Requirements) · 5+ years of experience in cloud VPS management, hosting infrastructure, data center operations, or similar roles. · Strong, hands-on experience with: · Proxmox clusters + KVM/QEMU · Ceph storage (deployment, troubleshooting, tuning, scaling) · Juniper networking (routing/switching/troubleshooting) · Solid expertise across: · Virtualization & HA concepts (cluster HA, migration, replication, failover) · Networking protocols and technologies (BGP, OSPF, VLAN, VRRP, LACP, etc.) · Performance tuning and root-cause analysis under pressure · Security fundamentals (firewalls, VPNs, hardening, patch management) · Monitoring and incident response best practices · Strong English written & verbal communication skills. · Comfortable with fast-paced environments, autonomy, and shift/on-call requirements. · Bachelor’s degree in a related field (or equivalent experience). Bonus Points (Nice to Have) · Experience with OpenStack, VMware, Hyper-V, oVirt/RHV, Xen, LXD/LXC. · Automation experience with Ansible / Terraform / Python / Bash / CI-CD. · Kubernetes knowledge (deploying/operating clusters for customers). · Hosting billing/provisioning integration experience (WHMCS or custom systems). · Background in web hosting or cloud industry (preferred). · Strong product mindset: ability to propose and shape new cloud/hosting offerings.