Server Infrastructure Administrator

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

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 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.

The Role:

This role is for a senior infrastructure specialist responsible for the stability, security, and optimization of critical server environments. The position combines deep technical expertise in systems administration and database management with a modern DevOps approach to automation and CI/CD. The ideal candidate will ensure the soundness and safety of the firm's technology landscape while supporting application development and release cycles.

Responsibilities

• Manage, maintain, and secure complex Windows Server environments, including patching, Group Policy, and performance optimization.
• Configure, maintain, and secure web servers (e.g., IIS) and manage and monitor applications on Cloud and container platforms like OpenShift.
• Administer database servers (SQL Server, Oracle, Couchbase), including security management, performance monitoring, backup/recovery, and disaster recovery.
• Proactively monitor logs and system health to troubleshoot issues, resolve infrastructure problems, and implement preventative measures.
• Diagnose and resolve complex network issues related to load balancing (e.g., F5), DNS, DHCP, and TCP/IP.
• Design and secure file shares and manage access permissions.
• Oversee the lifecycle of SSL certificates and secrets, including installation, renewal, and deployment updates.
• Manage and maintain secure Connect:Direct (NDM) file transfer processes.
• Contribute to DevOps initiatives, including managing Git/SCM, developing and assisting with CI/CD pipelines, and implementing Infrastructure as Code (IaC).
• Manage incidents, changes, problems, and releases within the ServiceNow platform.
• Monitor and control all phases of the development process, including analysis, design, construction, testing, and implementation.
• Consult with users, clients, and other technology groups on issues and recommend advanced programming or infrastructure solutions.
• Serve as a Subject Matter Expert (SME) to senior stakeholders and other team members, and act as an advisor or coach to new or lower-level analysts.

Qualifications

• 5+ years' relevant experience in systems analysis, programming, or administration.
• Expert hands-on experience in Windows Server administration, including server security, Group Policy, file share configuration, log analysis, performance tuning, PKI, and IIS.
• Strong understanding of database administration concepts, including security, performance tuning, backup/recovery, and architecture.
• Expertise in PowerShell scripting for automating complex administrative tasks.
• In-depth networking knowledge, including load balancing, DNS, DHCP, and TCP/IP.
• Proven experience with ServiceNow for Incident, Change, Problem, and Release Management.
• Solid understanding of CI/CD principles and experience with Git/SCM, build, and deployment processes.
• Experience with containers and container orchestration platforms, such as OpenShift.
• Experience with secure file transfer solutions like Connect:Direct (NDM).
• Familiarity with Infrastructure as Code (IaC) tools such as Ansible.
• Excellent analytical, problem-solving, and diagnostic skills.
• Ability to work under pressure and manage deadlines or unexpected changes in requirements.
• Superior communication, documentation, and collaboration skills.

Education

• Bachelor’s degree/University degree or equivalent experience.

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Primary Location:

Jacksonville Florida United States

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Primary Location Full Time Salary Range:

$96,960.00 - $145,440.00

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.

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Anticipated Posting Close Date:

Mar 11, 2026

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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.