Senior Site Reliability Engineer / Kubernetes

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.