Linux & OpenShift Infrastructure Engineer

Linux & OpenShift Infrastructure Engineer (L2/L3)Location : Lower ParelEXP : 10 yrsWorking in shiftsSkills : Linux, Ansible, Openshift, ITRS tool, Satellite workRole Overview :The Linux & OpenShift Infrastructure Engineer (L2/L3) is responsible for the complete lifecycle management, security, administration, and optimization of Linux-based and containerized environments. This hybrid role combines direct, hands-on technical support (L2) with platform architecture, automation, and sustained process improvement (L3), ensuring high availability, compliance, and advancement of business-critical applications.Key Responsibilities :Core Server & Platform Management :- Install, configure, and maintain Linux servers (RHEL, CentOS, Ubuntu, Debian, etc.).- Conduct lifecycle managementincluding minor/major upgradesfor both RHEL and OpenShift clusters.- Monitor system and cluster performance, proactively troubleshoot, and ensure optimal uptime.- Perform routine and emergency system upgrades, patching, and security hardening.- Lead master and node configuration, cluster onboarding/offboarding, and license/inventory management.User, Access & Security Management :- Administer user accounts, permissions, RBAC, authentication, and access controls for servers and container platforms.- Implement and enforce identity and access management (IAM) and compliance with internal and external standards.- Carry out vulnerability and security assessments, including image scanning and compliance via ACM/ACS.- Automate and maintain hardening guidelines following Infosec and regulatory standards.Automation & Optimization :- Automate routine tasks, monitoring, and patch management using Shell scripting, Ansible, and Python.- Build, optimize, and troubleshoot CI/CD pipelines (using Tekton or similar).- Scale worker nodes, optimize clusters (compute, storage, network), set/champion quotas and cluster metrics.- Drive ongoing automation for DR, backups, scaling, maintenance, health checks, and capacity planning.Day-to-Day Operations & Incident Response :- Respond to system alerts, incidents, and service requests ensuring issues are triaged and resolved promptly.- Manage escalation paths, document all interventions, and ensure complete ticket/audit traceability.- Practice thorough, transparent handovers and maintain all SOP/documentation for compliance and continuity.- Participate in and lead disaster recovery drills, root cause analyses, and problem management. Design, Deployment & Continuous Improvement :- Lead infrastructure and container platform design, deployment, and migrationson-premises or in the cloud.- Assess and onboard business applications for containerization, ensuring best practices and performance.- Enable Active/Active and DR (near/remote) usage scenarios, advise on platform/process optimization.- Integrate and fine-tune Service Mesh, storage, policy, and performance management at the platform level. Client Interfacing & Team Enablement :- Engage directly with clients for troubleshooting, upgrades, project delivery, DR, and compliance activities.- Support and deliver internal knowledge transfers, technical interviews, and mentoring for upskilling.- Recommend and implement process/tool improvements for higher efficiency and reliability.- Champion a culture of ownership, accountability, quality, and continuous learning.Required Technical Competencies :- Advanced expertise in RHEL, Linux, and OpenShift/Kubernetes.- Hands-on automation with Ansible, Shell, Python, and platforms like Red Hat Satellite.- Mastery of platform security, IAM, RBAC, monitoring, backup/DR, performance tuning, and compliance tooling.- End-to-end experience with CI/CD, cluster scaling, disaster recovery, and hybrid (on-prem/cloud) design.- Strong client interaction, documentation, incident, and escalation handling skills.Profile Highlights :- Delivers both operational support and strategic project leadership across Linux and container platforms.- Ownership mindset with readiness to innovate, troubleshoot, and optimize under 24x7/16x5 models.- Drives continuous service improvement, automation, and knowledge sharing for robust infrastructure delivery.- This combined profile sets a benchmark for top-tier infrastructure engineers in demanding, modern enterprise settings, ensuring readiness for current and future tech landscapes (ref:hirist.tech)