Linux Systems Engineer

About Cognizant Corporate

Cognizant Corporate is a global community united by a shared purpose: to make a meaningful impact. We are committed to excellence and driven by outcomes that matter. Collaboration is at the heart of how we work, and our forward-thinking mindset fuels continuous learning, innovation, and growth.

At Cognizant, careers transcend titles. We empower our people to think strategically, inspire others, and lead with purpose – always guided by our core values. Join us in shaping future of business. Could you be the one to make a difference?

Linux Engineer responsible for deploying and managing enterprise Linux systems to support applications cloud use and business operations. Ensures security availability and compliance with CMMC NIST DFARS and ISO standards. Works with IT and security teams on automation monitoring system hardening and documentation to maintain a stable and secure Linux environment.

Roles and Responsibilities

• Ensure the security availability performance and reliability of corporate Linux systems both on-premises and cloud-based.
• Deploy configure and manage Red Hat Enterprise Linux (RHEL) and Rocky Linux.
• Monitor and respond to system performance issues ensuring optimal resource utilization and uptime.
• Manage system patching kernel updates and security hardening following industry best practices.
• Automate system provisioning configuration management and maintenance using Ansible.
• Manage user authentication permissions and role-based access control (RBAC) in compliance with security policies.
• Maintain backup and disaster recovery strategies to ensure system resilience and data protection.
• Ensure compliance with security frameworks such as NIST CMMC ISO 27001 and GDPR for secure data transmission and storage.
• Conduct regular security audits and collaborate with cybersecurity teams to address vulnerabilities and improve network defenses.

• Ensure compliance with CMMC NIST DFARS and other industry security frameworks by implementing secure configurations.
• Work with cybersecurity teams to conduct vulnerability assessments risk mitigation and system hardening.
• Configure and maintain security baselines for Linux environments.
• Implement and maintain audit logging intrusion detection (IDS) and system monitoring tools.
• Support encryption and secure data transfer protocols to safeguard corporate data.

• Monitor system health and performance using Zabbix and other monitoring tools.
• Proactively identify and troubleshoot performance bottlenecks and critical system errors.
• Participate in incident response and forensic investigations when security incidents occur.

• Work closely with network storage and security teams to maintain a well-integrated IT ecosystem.
• Develop and maintain technical documentation service design diagrams and standard operating procedures (SOPs).
• Assist in vendor management for Linux-based tools licensing and hardware procurement.

We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a hybrid position requiring 3 days a week in our office in Blue Ash, Ohio. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.

The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.

Work Authorization: US Citizenship is required due to contract and clearance requirements.