Senior Linux Systems Engineer

ensono; Chennai District; On-site; INR 2,000,000 - 3,500,000; Full time

Job summary

Ensono in Chennai is seeking a Linux L3 Engineer to join our Linux Operations team. This hands-on leadership role manages, supports, and optimizes production Linux servers across hosted, cloud (AWS/Azure) and remote infrastructure, driving operational excellence and incident resolution.

You will own end-to-end tasks, develop automation with Ansible and IaC, contribute to runbooks and change control, mentor junior engineers, and collaborate with clients to ensure reliable, secure systems.

Qualifications

• 8+ years of production Linux/Unix administration and support experience.
• Deep knowledge of RHEL, CentOS, Ubuntu (including LTS versions).
• Advanced troubleshooting: kernel, networking, storage, performance tuning.
• Patching, security updates, and vulnerability remediation.
• Shell scripting and Ansible automation experience.
• SSH/LDAP authentication and Linux security fundamentals.

Responsibilities

• Incident & Problem Management with end-to-end ownership.
• Ownership of service requests, incidents, and operational tasks.
• Develop SOPs and contribute to runbooks for outages and DR.
• Automation and IaC to reduce manual effort and improve reliability.
• Coordinate changes within change management and maintain compliance.
• Mentor junior engineers and share knowledge with the team.
• Communicate effectively with clients and stakeholders.

Skills

Linux/Unix administration

RHEL/CentOS/Ubuntu

Shell scripting (Bash)

Ansible automation

Kernel/troubleshooting

Security & patching

SSH/LDAP authentication

Tools

Ansible

Docker

Kubernetes

SSH

LDAP

Job description

About Ensono

Ensono is an expert technology adviser and managed service provider. As a relentless ally, we accelerate clients' digital transformation to achieve business outcomes that stand to last. Our dedicated team helps organizations optimize today's systems across any hybrid environment with services such as consulting, mainframe and application modernization, public cloud migration and cloud-native development. With certified experts in AWS, Azure and Google Cloud and recognized as Microsoft Datacenter Transformation Partner of the Year, Ensono has over 3500+ associates globally and is headquartered in greater Chicago.

We care about your success, offering comprehensive strategic and managed services for mission-critical applications. Our Advisory and Consulting services can help upfront with an application strategy or find the right places for your applications - whether it's public, multi or hybrid cloud, or mainframe. And because we span across all mission-critical platforms, we can meet you wherever you are in your digital transformation journey, with 24/7 support when you need it. We are your relentless ally, flexing with you when challenges emerge so you don't feel stuck in place. With cross-platform certifications and decades of experience, our technology experts have become an extension of your team so you're continuously innovating - doing more with less while remaining secure. And that's just the beginning.

We are seeking a Linux L3 Engineer to join Linux Operations team. This is a hands‑on technical leadership role responsible for managing, supporting, and optimizing Linux servers in production environments across hosted, cloud (AWS/Azure), and remote infrastructure settings. You will drive operational excellence, incident resolution, automation, and continuous improvement for critical business systems.

Key Responsibilities

• Incident & Problem Management
  • Resolve high-priority incidents and major incidents (MIs) with end‑to‑end ownership and minimal escalation
  • Perform advanced root‑cause analysis and implement permanent, sustainable fixes
  • Lead critical incident response, stabilization, and recovery efforts under pressure
  • Provide clear technical direction and minimize business impact during outages
• Ownership & Accountability
  • Take end‑to‑end ownership of service requests, incidents, and operational tasks
  • Ensure proper validation, documentation, and closure of all work items
  • Track MTTR (Mean Time to Resolution) and drive continuous improvement
  • Maintain high availability and compliance standards
• Process Excellence & SOP Development
  • Create, review, and maintain Standard Operating Procedures (SOPs) for recurring operational tasks
  • Identify and document gaps in procedures and driving standardization across teams
  • Support audit and compliance requirements through documented processes
  • Contribute to operational runbooks and disaster recovery procedures
• Automation & Infrastructure as Code
  • Develop Ansible playbooks, shell scripts, and automation to reduce manual effort
  • Support infrastructure‑as‑code initiatives and configuration management
  • Identify repetitive tasks and drive automation to improve reliability and efficiencySupport deployment and orchestration initiatives (Docker, Kubernetes, orchestration tools)
• Change & Risk Management
  • Execute changes within ServiceNow/change management frameworks
  • Perform impact analysis and risk assessment for infrastructure changes
  • Coordinate with stakeholders during maintenance windows and service outages
  • Validate blackout configurations and alert suppression during changes
• Mentorship & Team Leadership
  • Act as a technical reference point and mentor for junior engineers
  • Guide team members during complex troubleshooting and escalations
  • Share knowledge through documentation, training, and collaborative problem‑solving
  • Contribute to team capability development and cross‑training
• Client & Stakeholder Management
  • Communicate effectively with internal teams and external clients
  • Provide clear updates on incident status and resolution timelines
  • Build trust through reliability, transparency, and technical credibility
  • Support SLA compliance and service level agreements

Required Qualifications

• Technical Skills
  • 8+ years of production Linux/Unix administration and support experience
  • Deep knowledge of RHEL, CentOS, Ubuntu (including LTS versions and lifecycle management)
  • Advanced troubleshooting skills: kernel, networking, storage, performance tuning
  • Experience with patching, security updates, and vulnerability remediation
  • Strong shell scripting ( Bash ) and Ansible automation experience
  • Proficiency with systemd, RPM/APT package management, and kernel modules
  • Hands‑on experience with SSH, sudo, LDAP/Active Directory authentication
  • Solid understanding of Linux security (SELinux, AppArmor, firewalls, file permissions)
• Cloud & Infrastructure
  • Experience with AWS EC2 , GCP and Azure VMs in production environments
  • Understanding of managed