Linux Administrator

Job Summary

Job Title: Linux Infrastructure Engineer

Location: Chennai, TN.

Employment Type: Full-Time / Contract

About the Role

We are seeking an experienced Linux Infrastructure Engineer to design, build, and maintain our scalable computing environment. In this role, you will be responsible for the lifecycle management of our Linux-based systems, bare-metal servers, and cloud infrastructure. The ideal candidate is heavily focused on automation, infrastructure as code (IaC), and ensuring high availability, security, and performance for critical applications.

Key Responsibilities

• System Administration: Install, configure, maintain, and troubleshoot enterprise Linux distributions (Ubuntu, Red Hat/RHEL, SUSE, or CentOS) across bare-metal, virtualized, and cloud environments.
• Automation & Configuration Management: Automate repetitive tasks and system provisioning using tools like Ansible, Chef, or Puppet.
• Infrastructure as Code (IaC): Design and deploy scalable infrastructure using Terraform or AWS CloudFormation.
• Cloud & Virtualization: Manage cloud infrastructure (AWS, Azure, GCP or OCI) and on-premise virtualization platforms (VMware, KVM, Nutanix).
• Containerization & Orchestration: Deploy, support, and scale containerized environments using Docker and Kubernetes.
• Monitoring & Reliability: Proactively monitor system performance, uptime, and capacity using tools like Prometheus, Grafana, Datadog, or Zabbix. Lead incident response and perform root-cause analysis (RCA).
• Security & Patch Management: Enforce security best practices, manage IAM/RBAC, apply kernel patches, configure firewalls (iptables/firewalld), and ensure compliance standards are met.
• CI/CD Integration: Work closely with DevOps and software engineering teams to support continuous integration and deployment pipelines (Jenkins, GitLab CI, GitHub Actions).

Required Qualifications

• Experience: 4+ years of hands-on experience in Linux system administration and IT infrastructure engineering.
• OS Expertise: Deep understanding of Linux internals, file systems (LVM, NFS, EXT4, XFS), kernel tuning, and package management.
• Scripting Skills: Strong proficiency in writing automation scripts in Bash, Python, or Go.
• Networking Knowledge: Solid grasp of core networking protocols and concepts (TCP/IP, DNS, DHCP, SSH, VPNs, Load Balancing, and routing).
• Hardware/Storage: Experience managing bare-metal servers, SAN/NAS storage, and RAID configurations.

Preferred Qualifications (Nice to Have)

• Industry certifications such as RHCE (Red Hat Certified Engineer), AWS Certified SysOps Administrator, or CKA (Certified Kubernetes Administrator).
• Experience managing GPU-accelerated infrastructure or AI/ML computing platforms.
• Familiarity with Bare Metal as a Service (BMaaS) platforms.
• Experience migrating legacy on-premise infrastructure to public cloud platforms.