System Administrator - VP (Hybrid)

About Citi:

Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.

As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and, in our clients', best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Enterprise Operations & Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital architecture and ensuring our platforms provide a first-class customer experience. We reimagine client and partner experiences to deliver excellence through secure, reliable, and efficient services.

Our commitment to diversity includes a workforce that represents the clients we serve from all walks of life, backgrounds, and origins. We foster an environment where the best people want to work. We value and demand respect for others, promote individuals based on merit, and ensure opportunities for personal development are widely available to all. Ideal candidates are innovators with well-rounded backgrounds who bring their authentic selves to work and complement our culture of delivering results with pride. If you are a problem solver who seeks passion in your work, come join us. We'll enable growth and progress together.

About Our Team:

Citi Technology Infrastructure (CTI) provides the critical technical foundation for Citi's operations and is responsible for delivering reliable IT solutions, scalable infrastructure services, and secure capabilities while creating a trusted customer experience and enabling Citi's workforce to be the best for our clients. Making the bank simpler, greener, and better connected while powering it with trusted, well-secured data, and automating policy enforcement through code are all at the heart of our refreshed global strategy. Data Quality, Simplification, Environmental Stability, Automation, and Service Excellence are the key pillars and priorities on our strategic journey.

In CTI, we are focused on delivering the best for our clients, and we know that to do this we need a talented team with diverse experiences, backgrounds, and skills.

Job Overview:

We are seeking an accomplished and technically astute Level 3 Linux System Administrator to join our high-performance infrastructure team. This individual will serve as a subject matter expert (SME) on Linux systems, providing deep operational insight, advanced troubleshooting, performance tuning and capacity planning. Demonstrate a strong balance on hands-on expertise, automation mindset, and a strategic approach to system scalability, security, and lifecycle management.

Skills & Qualifications - Must Have:

• 8+ years of progressive experience in Linux Server Administration with enterprise level skills in Physical and virtual environment management.
• Deep Understanding of Linux security methodologies, Hardening procedure and best practices.
• Deep Understanding of Linux Internals - Process Management, Memory handling. Kernel Tuning, Capacity planning.
• Evaluate and maintain server storage and other IT standards for the enterprise and all supporting products and services.
• Excellent problem solving and analytical skills.
• Analyze server and storage characteristics (e.g., CPU behavior latency transmission speeds packet loss and throughput) triage and troubleshoot problems. Knowledge and experience of Root Cause Analysis (RCA) required
• Familiarity with complex multi-site and global network design multi-layered switch environment firewalls VPN Load balancers and DNS
• Familiar with the fundamentals of web application and relational database architectures
• Aptitude for influencing others without direct authority
• Ability to prioritize and work well under pressure
• Excellent communication and documentation skills both in technical and non-technical arenas
• Ability to work with a global support team
• Ability and willingness for on-call and after-hours work
• Ability to thrive in new hybrid work schedule: Days in office, and days remote
• Adept at learning and applying new technologies and solving new problems
• A real passion and excitement about improving processes with new technology
• Ability to coordinate and engage with stakeholders

Skills & Qualifications - Nice to Have:

• Scripting / Coding Knowledge- Understanding and writing a code and script (Shell, Python. Perl, Yaml, and / or PHP)
• Hands on Experience with automation tools (Ansible, Chef, Puppet)
• Knowledge / Hands on Experience with analytics / observability tools (Grafana, Kibana, Elk, Splunk, AppDynamics)
• Experience with container technologies (docker, Kubernetes, OpenShift, AWS, Google Cloud Platform).
• Code Version Control: Knowledge or certification with BitBucket, GitHub, or AWS CodeCommit
• Software Collaboration/Repository Tools: Knowledge or certification with JFrog Artifactory, JIRA
• Understanding of agile and other development processes and methodologies

Role Description:

• Deliver expert-level support and resolution for complex incidents and problems within the Linux ecosystem, ensuring minimal business impact and adherence to SLAs.
• Troubleshoot and resolve escalated issues in the Linux Environment.
• Proactively monitor system health, performance and capacity to ensure stability, availability and reliability.
• Perform Kernel Upgrade, patches and Vulnerability Management to ensure compliance meeting the organization standards.
• Design and enforce system hardening, access control, and security baselines aligned with the compliance framework.
• Server as escalation point and technical advisor for Level 1 and 2 administrators, develop technical runbooks and knowledge-based articles.
• Participate and lead initiatives for architectural reviews, infrastructure modernization, and enterprise risk assessments.
• Lead Major Incidents and engage with stake holders to perform Root Cause Analysis and provide permanent solutions.

Education:

• Bachelor's/University degree in Computer Science/Engineering preferred or equivalent experience

Job Family Group:
Technology

Job Family:
Infrastructure

Time Type:
Full time

Primary Location:
Irving Texas United States

Primary Location Full Time Salary Range:
$125,760.00 - $188,640.00

In addition to salary, Citi's offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

Anticipated Posting Close Date:
May 20, 2025

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi's EEO Policy Statement and the Know Your Rights poster.