Job Description

rate :- 150K/M

UNIX / Linux Support – Level 3

Role Title: UNIX / Linux Senior Support Engineer (L3) Technology: Red Hat Linux, Veritas, Ansible, VMware Reporting To: UNIX Platform Lead / Infrastructure Manager Support Model: On-call / After-hours (rotational)

Role Summary

The UNIX / Linux Level 3 Support Engineer provides advanced operational and technical support for the enterprise Unix/Linux infrastructure across development, testing, staging, production, and disaster recovery environments. This role focuses on system administration, patching, security remediation, performance optimization, automation execution, and platform stability, while serving as a key escalation point for Level 2 teams.

Level 3 engineers ensure secure, compliant, and high-performing operations and collaborate closely with application teams, InfoSec, and infrastructure stakeholders.

Key Responsibilities

System Administration & Server Management

· Administer and support Linux/Unix servers across all environments (Dev, Test, Stage, Prod, DR).

· Perform server provisioning and lifecycle management following approved standards.

· Execute configuration changes within defined governance models.

Patching & Maintenance

· Execute and support monthly patching for 300+ servers.

· Utilize Ansible Automation Platform for patch orchestration, validation, and compliance tracking.

· Troubleshoot patch failures and coordinate remediation or rollback actions.

Security & Compliance

· Collaborate with InfoSec and onshore teams to:

o Remediate identified vulnerabilities

o Implement CIS baselines and security controls

o Support enterprise security initiatives (e.g., CrowdStrike, CyberArk)

· Execute remediation actions and validate closure.

Operational Support & Incident Management

· Provide Level 3 incident support, including complex troubleshooting.

· Participate in after-hours incident and change support.

· Execute approved changes during maintenance windows.

· Ensure daily operational tasks and system health checks are completed.

User, Performance & Storage Management

· Administer user accounts, groups, and access controls.

· Monitor and optimize:

o CPU

o Memory

o Disk I/O

o File systems and partitions

· Support storage upgrades and capacity management.

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Key Responsibilities

Platform Architecture & Engineering

· Own Unix/Linux platform architecture across production and disaster recovery environments.

· Define and maintain:

o Build standards

o Configuration baselines

o Security hardening patterns

o DR and replication architecture

· Lead platform design decisions and roadmap enhancements.

Advanced Troubleshooting & Root Cause Analysis

· Serve as final escalation point for critical or systemic incidents.

· Perform in-depth root cause analysis (RCA) covering:

o Kernel issues

o Performance degradation

o Cluster failures

o Storage and replication faults

· Drive permanent fixes and preventive measures.

Clustering, Storage & Replication

· Design, implement, and support:

o Red Hat and Veritas clustering

o SAN-based replication solutions

o High availability and failover architectures

· Validate resilience through testing and DR exercises.

Security Strategy & Compliance

· Define Unix/Linux security hardening strategy aligned to CIS benchmarks.

· Partner with InfoSec on vulnerability management frameworks.

· Review and approve remediation approaches for complex security findings.

Automation Strategy & Tooling

· Define enterprise-wide automation strategy using Ansible and scripting platforms.

· Review and approve automation frameworks developed by lower tiers.

· Drive efficiency and standardization across Unix/Linux operations.

Leadership, Governance & Mentorship

· Provide technical leadership and mentoring for L2/L3 engineers.

· Review and approve changes impacting platform stability.

· Participate in governance forums, audits, and architecture reviews.

· Advise stakeholders on Unix/Linux risks, capacity, and modernization initiatives.

Skills & Experience

· 8–12+ years of deep Unix/Linux engineering experience.

· Act as a offshore lead and take responsibility in managing the offshore resources

· Expert-level knowledge of:

o Red Hat Linux internals

o Veritas Volume Manager and clustering

o SAN architectures and replication

· Proven experience leading platform architecture in large enterprises.

· Strong communication and leadership skills.

On-Call Requirement

· Must be open to senior-level escalation support, including participation during major incidents or DR events.

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Software & Automation

· Manage software packages and resolve dependency issues.

· Execute and enhance automation using Ansible and Bash scripting.

· Reduce manual effort through repeatable automation patterns.

Virtualization, Data Center & Global Support

· Support VMware VM operations and ESX provisioning.

· Perform data center support tasks (hardware, SAN, networking coordination).

· Respond to global support requests.

· Assist with application upgrades and hardware refresh initiatives.

Disaster Recovery

· Participate in disaster recovery exercises and validation activities.

· Support DR readiness and restoration processes.

Skills & Experience

· 5–7 years of enterprise UNIX/Linux system administration.

· Strong experience with Red Hat Linux, Ansible, and VMware.

· Working knowledge of:

o Red Hat LVM / Veritas Volume Manager

o Red Hat or Veritas clustering

o SAN-based storage environments

· Experience in SLA-driven, regulated environments.

On-Call Requirement

· Must be open to an on-call support model, including nights and weekends.

UNIX / Linux Support – Level 4

Role Title: UNIX / Linux Platform Architect / Principal Engineer (L4) Technology: Red Hat Linux, Veritas Clustering, SAN Replication, Ansible Reporting To: Infrastructure Architecture / Platform Head Support Model: Senior Escalation & Governance

Role Summary

The UNIX / Linux Level 4 role is the technical authority and platform owner for enterprise Unix/Linux infrastructure. This role is responsible for architecture, advanced troubleshooting, performance engineering, security hardening strategy, clustering, replication, and disaster recovery design.

Level 4 engineers define standards, lead complex problem resolution, and mentor Level 2 and Level 3 teams, ensuring the Unix/Linux platform meets enterprise reliability, security, and scalability requirements.

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Deliver

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