Senior Site Reliability Engineer / Kubernetes (Remote)

Job Description Location: Fully remote EU timezone (CET ±2h) Start date: ASAP Languages: Fluent English is mandatory Industry: Cloud Computing We are hiring at Pragmatike to expand our team and drive the growth of our internal projects. Our focus is on developing cutting-edge solutions in Cloud Computing, while fostering a culture of collaboration and innovation. Joining us means being part of a passionate team where your ideas and skills directly contribute to shaping tomorrows technologies. If you're excited about working on ambitious projects in a dynamic and flexible environment, we'd love to hear from you! RESPONSIBILITIES • Operate and maintain Linux-based infrastructure (Debian/Ubuntu). • Deploy, manage, and scale Kubernetes clusters across bare-metal, virtualized, and on-prem environments. • Oversee full cluster lifecycle: upgrades, node pools, networking, storage, and security hardening. • Implement automation for provisioning and operations using Ansible, Bash/Python, and GitOps workflows. • Design and maintain networking architecture including VLANs, L2/L3 routing, VPNs, and multi-site connectivity. • Build automated deployment workflows (PXE boot, Preseed, cloud-init). • Deploy and maintain observability stacks (Prometheus/Grafana, Loki, ELK, Graylog). • Lead incident response and escalation activities across the platform. • Improve system availability and reduce latency at all levels. • Define and implement SLOs/SLIs at multiple infrastructure levels (physical network/hardware, platform virtualization, software services). • Optimize alerting and monitoring pipelines to provide actionable insights. • Establish and maintain on-call schedules to ensure coverage across timezones. • Develop Standard Operating Procedures (SOPs) for repeatable operations and maintenance tasks. • Coordinate physical maintenance for Policlouds (periodic maintenance, hardware issues, DC-Ops). • Manage virtualization and orchestration layers (OpenStack, Proxmox, VMware). • Help develop and maintain overall architecture across all products. • Plan resources for future initiatives, accounting for demand and growth projections. • Work with development teams to improve overall quality and optimize resource utilization. • Collaborate with cross-functional stakeholders (Hivenet, Policloud, Customer Success teams). REQUIREMENTS • Expert-level, hands-on experience operating Kubernetes in production environments. • Strong network engineering skills (VLANs, L2/L3 routing, VPNs, multi-site connectivity) - this is essential for the role. • Strong proficiency with Linux systems administration (Debian/Ubuntu). • Solid understanding of networking fundamentals and ability to design complex network architectures. • Experience building and maintaining automation workflows (Ansible, Bash/Python, Git-based). • Experience with observability stacks such as Prometheus, Grafana, ELK, Loki, or Graylog. • Background with virtualization technologies (OpenStack, Proxmox, VMware). • Experience with bare-metal provisioning and MAAS (Metal as a Service). • Strong understanding of distributed systems and container orchestration. • Process-oriented mindset with ability to develop SOPs and operational procedures from scratch. • Experience with incident response, escalation procedures, and on-call rotations. • Ability to work autonomously in a fast-paced, engineering-driven environment. • Strong technical skills combined with alignment to team values. NICE TO HAVE • Experience with service mesh (Istio, Linkerd) or advanced CNI implementations. • Knowledge of Cloudflare APIs, DNS automation, or tunnel configurations. • Experience with GPU infrastructure, node preparation, or resource scheduling. • Familiarity with security best practices (RBAC, firewalls, network policies). • Exposure to IT asset management or license tracking workflows. • Experience working in multi-timezone environments and coordinating across distributed teams. • Background establishing reliability practices and SRE frameworks in growing organizations. Why Join Us: • 100% remote work with flexible hours • High-impact role with autonomy and ownership • Collaborative and international engineering team • Cutting-edge tech stack with strong focus on reliability and automation.