Linux Administrator – POS Domain

About the role:

We are seeking a Linux Administrator to support and build a new Point-of-Sale (POS) domain infrastructure. The role is responsible for designing, deploying, securing, and operating Linux-based environments that host critical POS applications and services, ensuring high availability, performance, and security across retail operations.

This position plays a key role in establishing foundational infrastructure standards for a new POS landscape and requires strong Linux expertise combined with experience in mission-critical, high-availability environments.

Responsibilities: 

     Linux Infrastructure Setup & Operations

• Build, configure, and maintain Linux servers for POS domain environments (DEV / TEST / PROD)
• Install, configure, and manage POS-related services and applications
• Ensure system availability, performance, and scalability for retail workloads
• Perform system upgrades, patching, and lifecycle management

    POS Domain Enablement

• Support the onboarding of new POS applications and services
• Collaborate with POS application, integration, and middleware teams
• Ensure Linux environments meet POS operational and performance requirements
• Support store-to-central systems connectivity and data flows

     Security & Compliance

• Implement and maintain Linux security hardening standards
• Manage users, roles, permissions, and access controls
• Apply security patches and address vulnerabilities
• Ensure compliance with internal IT and security policies

     Monitoring, Incident & Problem Management

• Set up and maintain monitoring, logging, and alerting
• Diagnose and resolve system-level incidents (L2/L3 support)
• Perform root cause analysis for recurring or critical issues
• Provide on-call or critical support during peak retail periods

    Automation & Optimization

• Automate routine operational tasks using shell scripting / Ansible / similar tools
• Optimize system performance (CPU, memory, storage, I/O)
• Support capacity planning and proactive system improvements

    Documentation & Collaboration

• Maintain operational documentation, runbooks, and procedures
• Work closely with DevOps, Network, Security, and POS application teams
• Support testing, cutovers, and go-live activities for the new POS domain

What are we looking for:

    Technical Skills

• Strong experience administering Linux systems (RHEL, Oracle Linux, Ubuntu, or similar)
• Solid understanding of system services, networking, storage, and filesystem management
• Experience with POS or retail environments is a strong plus
• Knowledge of monitoring tools (e.g., Prometheus, Nagios, Zabbix, ELK, etc.)
• Experience with automation and scripting (Bash, Ansible, etc.)
• Familiarity with virtualization and/or cloud platforms (VMware, cloud IaaS)

    Infrastructure & Operations

• Experience supporting business-critical systems with high availability requirements
• Understanding of backup, recovery, and disaster recovery concepts
• Knowledge of performance tuning and capacity management
• Experience working in ITIL-based support environments

Profile & Soft Skills

• Strong troubleshooting and analytical skills
• Ability to work in fast-paced, operationally critical environments
• Clear communication with both technical and non-technical stakeholders
• Structured, reliable, and security-focused mindset
• Comfortable working independently and within cross-functional teams

Nice to Have

• Experience with POS platforms or retail IT landscapes
• Exposure to DevOps practices and CI/CD pipelines
• Knowledge of containerization (Docker, Kubernetes)
• Experience supporting global or multi-site environments