We are seeking candidates for Level 3 Unix Senior systems administration group to support franchise critical applications within the business sector. The role will provide in depth operational support of Unix platforms across IaaS, MVM, standalone physical nodes and Veritas clusters. Core responsibilities will involve planning and coordination of tasks related to advanced OS administration, subject matter expertise, infrastructure product management and ensuring optimal Level 3 SA support for corporate applications. Develop reports and metrics to assist management in progress tracking and set priorities. The individual will be responsible for overseeing all Infrastructure initiated deployments and vendor escalations. Automate processes and improve efficiencies. Adhere to corporate and business specific policies and consider appropriate controls as part of day-to-day responsibilities. Partner closely with business teams and maintain a strong client focus to drive customer satisfaction.
Due to the global nature of the role, working hours may vary and the successful candidate is expected to adapt to the competing and challenging needs of his or her business line(s). Significant Technology Infrastructure experience is essential, and while Citi organizational knowledge would be a bonus it is not required to apply for this role. Experience in one or more business products which make up Citi's SMBF business would be beneficial.
Responsibilities:- Strong customer and quality focus is a must.
- Strong customer and colleague communication skills, both written and verbal
- Strong organization and planning skills
- Interaction with staff across diverse geographies and cultures
- Ability to react to a dynamic environment
- Ability to remain calm and objective in a high-pressure environment
- Strong problem-solving skills, judgement and decision-making skills required
- Must have strong self-management and be ready to use own initiative
- Must be a strong team-player and collaborator
- Time management and prioritization skills
- Ability to develop strong working relationships
- Ability to work under pressure and meet aggressive deadlines.
- Ability to positively influence others
- Business acumen
- Flexible and self-motivated
- Good documentation and presentation skills
- Excellent organizational, interpersonal, and project management skills
Skills & Qualifications- At least 5 + years of relevant experience.
- Strong Linux administration & troubleshooting ( RHEL 7, 8, and 9) experience
- VCS cluster experience and knowledge on Linux clusters
- Proficient with performance and systems management
- Good understanding of Linux builds and monitoring tools
- Familiarity of Oracle database and ASM/RAC clusters
- Strong scripting knowledge to automate functions
- Familiar with the fundamentals of web application and relational database architectures
- Knowledge and writing a code and script (Shell, Python. Perl, Yaml, and / or PHP) is a huge plus.
- Knowledge with analytics and observability tools (Grafana, Kibana, Elk, Splunk, AppDynamics) is a plus
- Experience with container technologies (docker, Kubernetes, openShift, AWS, Google Cloud Platform).
- Relevant Certifications are a plus (e.g., Linux+, RHCSA, LFCS, LPIC, MCSE, etc.)
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:$96,400.00 - $144,600.00
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.
Most Relevant Skills Please see the requirements listed above.
Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.
Anticipated Posting Close Date:Feb 11, 2026
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