Specialist, Linux Administration (Bengaluru)

Important Company of the Sector; Bengaluru; Hybrid; INR 1,800,000 - 3,200,000; Full time

Job summary

Colt is seeking a Senior Linux Administrator to design, implement, and optimize Linux infrastructure powering 4000+ systems across our organisation. You will act as a technical SME within the Linux Engineering team and collaborate with security, architecture, and operations teams to deliver reliable, scalable services.

You will drive automation with Ansible, contribute to roadmaps, and maintain procedures ensuring security, resilience, and high availability.

Qualifications

• Experience managing 4000+ Linux systems.
• Strong knowledge of Ansible and automation frameworks.
• DNS and LDAP management experience (Red Hat / Oracle).
• Experience with HA/DR solutions.
• Understanding security frameworks (ISO 27001, CIS).
• Scripting in Bash and Python; IaC principles.
• Excellent communication skills for cross-team collaboration.
• Ability to troubleshoot complex Linux environments.

Responsibilities

• Provide advanced engineering support for Linux systems.
• Define and implement technology roadmaps for Linux infrastructure.
• Develop and maintain operating procedures for secure, stable system management.
• Design solutions meeting security, resilience, and high availability requirements.
• Drive automation using Ansible and other tools.
• Lead complex troubleshooting across Linux platforms.
• Support patching, hardening, and configuration management.
• Collaborate with security and compliance teams.
• Develop documentation for engineering solutions and audits.
• Participate in on-call rota for incident support.

Skills

Linux Administration

Ansible Automation

DNS & LDAP

High Availability

Security & Compliance

Scripting (Bash/Python)

Communication Skills

Troubleshooting

Education

Bachelor's degree in Computer Science / IT or equivalent

RHCE / LFCS / LFCE Certifications

Tools

Docker

Kubernetes

AWS

Azure

GCP

Red Hat Linux

Job description

Colt provides network, voice and data centre services to thousands of businesses around the world, allowing them to focus on delivering their business goals instead of the underlying infrastructure.

Specialist, Linux Administration

Job ID: 36121

Job Level: S2 Core

Job Location: Bangalore/Gurugram

Function:Digital Information Office (DIO)

Employment Type: Full time

Working pattern: Hybrid

Why we need this role

We are seeking a highly skilled Senior Linux Administrator who will act as a technical subject matter expert within the Linux Engineering team. The role is accountable for designing, implementing, supporting, and optimising the Linux infrastructure that underpins critical business applications.

The successful candidate will work as part of a team supporting approximately 4000 Linux systems, contributing to technology roadmaps, automation initiatives, operational excellence, and continuous improvement. This role requires deep technical expertise, strong troubleshooting skills, and the ability to collaborate effectively with architecture, security, and operations teams across the organisation.

What you will do

• Serve as a senior technical expert for Linux systems, providing advanced engineering support and guidance.
• Contribute to the definition and implementation of technology roadmaps for Linux infrastructure and associated services.
• Develop and maintain operating procedures to ensure secure, stable, and efficient system management.
• Design and implement solutions that meet security, compliance, resilience, and high availability requirements.
• Drive automation using Ansible and other tools to streamline operational tasks and reduce manual effort.
• Lead complex troubleshooting activities across Linux platforms and integrated technologies.
• Support patching, hardening, and configuration management activities aligned to security and compliance standards.
• Work closely with security and compliance teams to ensure adherence to regulatory frameworks and internal controls.
• Support and enhance DNS and identity management solutions, including Red Hat and Oracle LDAP.
• Develop and maintain documentation for engineering solutions, operational processes, and compliance audits.
• Participate in the Infrastructure Operations on call rota to provide out of hours support for priority incidents

What were looking for

• Extensive experience in Linux system administration (Red Hat, CentOS, Ubuntu).
• Expert knowledge of Ansible and automation frameworks.
• Strong understanding of DNS and identity management, including LDAP (Red Hat and Oracle).
• Experience designing or supporting high availability and disaster recovery solutions.
• Deep understanding of security frameworks and compliance standards (e.g., ISO 27001, CIS benchmarks).
• Proficiency in scripting (Bash, Python) and infrastructure as code principles.
• Strong analytical, troubleshooting, and problem solving skills.
• Excellent communication skills for working with engineering, architecture, and operations teams.

Qualification

• Bachelors degree in Computer Science, Information Technology, or related field (or equivalent experience).
• 8+ years of Linux administration experience, ideally within a large scale or enterprise environment.
• Experience with cloud platforms (AWS, Azure, GCP).
• Familiarity with containerization (Docker, Kubernetes).
• Certifications such as RHCE, LFCS, LFCE, or security related credentials.

What we offer you:

Looking to make a mark

At Colt, youll make a difference. Because around here, we empower people. We dont tell you what to do.

Instead, we employ people we trust, who come together across the globe to create intelligent solutions.

Our global teams are full of ambitious, driven people, all working together towards one shared purpose: to put the power of the digital universe in the hands of our customers wherever, whenever and however they want.

We give our people the opportunity to inspire and lead teams, and work on projects that connect people, cities, businesses, and ideas. We want you to help us change the world, for the better.

Diversity and inclusion

Inclusion and valuing diversity of thought and experience are at the heart of our culture here at Colt. From day one, youll be encouraged to be yourself because we believe thats what helps our people to thrive. We welcome people with diverse backgrounds and experiences, regardless of their gender identity or expression, sexual orientation, race, religion, disability, neurodiversity, age, marital status, pregnancy status, or place of birth.

Most recently we have:

• Signed the UN Women Empowerment Principles which guide our Gender Action Plan
• Trained 60 (and growing) Colties to be Mental Health First Aiders
• Please speak with a member of our recruitment team if you require adjustments to our recruitment process to support you. For more information about our Inclusion and Diversity agenda, visit our DEI .