What makes Cognizant a unique place to work? The combination of rapid growth and an nique place international and innovative environment! This is creating many opportunities for people like YOU — people with an entrepreneurial spirit who want to make a difference in this world.
At Cognizant, together with your colleagues from all around the world, you will collaborate on creating solutions for the world's leading companies and help them become more flexible, more innovative, and successful. Moreover, this is your chance to be part of the success story.
Position Summary
As a Senior Linux Systems Administrator, you will make an impact by leading the design and execution of automated, zero-touch patch management workflows that keep our large-scale virtual infrastructure secure, compliant, and running at peak performance. You will be a valued member of the Infrastructure & Cloud Operations team and work collaboratively with your manager, peer systems engineers, and security and compliance stakeholders
Mandatory Skills
· Extensive hands-on Red Hat Enterprise Linux and/or CentOS administration experience at enterprise scale; RHCSA or RHCE certification preferred
· Proven expertise architecting and implementing Ansible playbooks, roles, and workflows using Ansible Tower, AWX, or Ansible Automation Platform (AAP)
· Strong working knowledge of VMware vSphere/ESXi 7.x or 8.x, including VM provisioning, datastore management, and host patching via vCenter
· Advanced proficiency in Bash or Python scripting for task automation, along with deep familiarity with patching tools such as Red Hat Satellite and YUM/DNF
· Strong understanding of TCP/IP, DNS, SSH, NFS, and SAN/LVM storage concepts at an enterprise level
Roles And Responsibilities
· Lead the design, development, and maintenance of Ansible playbooks, roles, and Automation Platform (AAP) workflows to automate OS patching, kernel upgrades, service restarts, and pre/post-patch validation across Red Hat Enterprise Linux and VMware ESXi environments
· Architect and implement zero-touch patching frameworks and infrastructure automation strategies that reduce manual intervention and improve operational efficiency at scale
· Lead the management and troubleshooting of VMware ESXi hosts and virtual machines via vCenter/ESXi API, including snapshot management, guest tool updates, and host patching
· Own and drive compliance and reporting by ensuring all servers meet security standards, generating automated compliance reports, and maintaining thorough patch documentation
· Define and enforce infrastructure as code standards using Git for version-controlled Ansible playbooks, ensuring idempotent configuration across the environment
· Act as the escalation point for L2/L3 incident support for Linux and VMware issues, leading root cause analysis to prevent recurrence and overseeing daily administration tasks including user management, LVM, SAN/NFS storage, and security hardening
Salary Range: >$100,000
Date of Posting: 29-Jun-26
Next Steps: If you feel this opportunity suits you, or Cognizant is the type of organization you would like to join, we want to have a conversation with you! Please apply directly with us.
For a complete list of open opportunities with Cognizant, visit http://www.cognizant.com/careers. Cognizant is committed to providing Equal Employment Opportunities. Successful candidates will be required to undergo a background check.
コグニザントについて
コグニザント（NASDAQ: CTSH）は、AI Builderおよびテクノロジーサービスプロバイダーとして、お客様にフルスタックのAIソリューションを構築することで、AI投資と企業価値を結ぶ架け橋となっています。業界、ビジネスプロセス、エンジニアリングに関する当社の深い専門知識を活かし、組織固有のビジネス環境をテクノロジー・システムに組み込みます。これにより、人間の可能性を最大限に引き出し、確かな成果を実現するとともに、急速に変化する世界においてグローバル企業が常に一歩先を行くための支援を行っています。 詳細については、cognizant.ai をご覧ください。
雇用に関する追加情報
本募集に記載されている報酬情報は、掲載日時点で正確なものです。Cognizantは、適用される法令に従い、いつでも本情報を変更する権利を留保します。
応募者は、対面またはビデオ会議による面接への参加を求められる場合があります。また、各面接の際に、現在有効な州政府または政府発行の身分証明書の提示を求められる場合があります。
Cognizantは機会均等雇用主です。応募および選考において、人種、肌の色、性別、宗教、信条、性的指向、性自認、国籍、障がい、遺伝情報、妊娠、退役軍人の地位、その他連邦法・州法・地方自治体の法律により保護されるいかなる特性に基づく差別も行いません。
