DevOps Engineer

We are looking for someone who feels comfortable working with both Kubernetes and physical hardware. For us, DevOps doesn’t stop at pipelines-it extends to the server room, the network, and field devices.

Requirements

• At least 3 years of experience in a DevOps / SRE / Infrastructure Engineer role.
• Strong knowledge of production-grade Kubernetes.
• Solid networking knowledge: TCP/IP, routing, DNS, VLAN, NAT, VPN.
• Experience with virtualization and physical hardware (Proxmox or similar).
• Hands-on experience with Terraform and Ansible.
• Experience with CI/CD and the GitOps approach (GitLab CI, Argo CD, or similar).
• Knowledge of Helm and/or Kustomize.
• Understanding of TLS, PKI, and certificate management.
• Strong Linux skills.

Responsibilities

• Maintain and develop Kubernetes clusters based on Talos Linux.
• Manage on-premise infrastructure: Proxmox, bare-metal servers, Ceph storage.
• Design and maintain network infrastructure: routing (including BGP), DNS, VLANs, VPNs, firewalls.
• Automate infrastructure using Terraform and Ansible.
• Develop GitOps workflows: GitLab CI/CD, Argo CD, Helm, Kustomize.
• Manage secrets and certificates (OpenBao, PKI, cert-manager).
• Maintain databases and message brokers: PostgreSQL (CNPG), MongoDB, RabbitMQ, MQTT, Dragonfly.
• Monitor and manage logging with VictoriaMetrics and VictoriaLogs.
• Maintain LoRaWAN infrastructure: ChirpStack v4 and gateways with Basics Station (CUPS/LNS).

Nice to have

• Talos Linux or other immutable operating systems for Kubernetes.
• Ceph (RBD, CephFS, S3 via RGW).
• OpenBao or HashiCorp Vault.
• VictoriaMetrics / VictoriaLogs or Prometheus / Loki.
• CloudNativePG, MongoDB, Dragonfly, or Redis.
• MQTT and IoT systems.
• LoRaWAN, ChirpStack, Basics Station (CUPS/LNS).
• LTE routers and connectivity (e.g., MikroTik, private APNs).
• Dependency-Track, SBOM, vulnerability scanning.
• Experience with on-call rotations.

About CTHINGS.CO CTHINGS.CO is a Polish technology company that designs and delivers advanced solutions in 5G, the Internet of Things (IoT) and Edge Computing. We offer end-to-end systems including IoT devices (hardware), dedicated sensors, proprietary software and the ORCHESTRA platform for managing IoT infrastructure and processing real-time data.

To oferujemy

• Recruitment language: English&Polish
• Permanent contract
• Paid holiday for: B2B
• Remote work or hybrid work with remote days: flexible in a week
• Startup atmosphere
• Modern office
• Flat structure
• International projects
• Small teams
• Multisport card
• Private medical care

Recruitment process

• Phone Screening Call (30 mins)
• Technical Online Meeting (60 mins)
• Online Meeting with Hiring Manager (30-45 mins)