System Engineer (Infrastructure - mid-junior)

Job Summary

The role involves working in a high-availability, multi-site environment with hybrid cloud and on-premise components.

You will be part of a dynamic team responsible for managing infrastructure components such as Linux servers, DNS, Kubernetes, HAProxy, Postfix, and backup systems, supporting critical systems and ensuring infrastructure resilience and security.

Responsibilities:

• Deploy, configure, and maintain Linux-based infrastructure across multiple environments (on-premise and cloud).
• Manage DNS infrastructure, including BIND, DNSSEC, zone file management, and integration with APIs.
• Operate and support containerized environments using Kubernetes (K3s) and ingress solutions such as HAProxy or Traefik.
• Enforce infrastructure hardening and patching compliance (CIS benchmark, ISO standards).
• Coordinate and maintain HA/DR across dual-site architectures.
• Plan and execute backup strategies for application data, configuration files, logs, and platform states.
• Prepare and maintain infrastructure documentation, operational SOPs, and network diagrams.
• Collaborate with solution architects, developers, and support teams to meet project timelines and uptime SLAs.

Requirements:

• Minimum 3 years of experience in system engineering, infrastructure operations, or DevOps roles.
• Strong experience with Linux administration (CentOS, RHEL, Ubuntu).
• Familiarity with Postfix and integrating mail routing with MySQL for email forwarding/aliasing.
• Experience with Kubernetes (preferably K3s) and containerized workload management.
• Working knowledge of HAProxy, Apache/Nginx, Traefik ingress controllers.
• Familiarity with backup tools (rsync, mysqldump, pg_dump, cron jobs, snapshot mechanisms).
• Understanding of SSL/TLS, firewall concepts, load balancing, and WAF protections.