Senior Linux Engineer - Security Biometrics & Production Support, Citi

Citi

Location:
United States, New Castle ▼
Tampa
Irving

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

125760.00 - 188640.00 USD / Year

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Job Description:

Senior Linux Engineer role focused on security biometrics and production support within Citi's CISO organization, providing technical support for authentication infrastructure and cybersecurity operations

Job Responsibility:

Support business and work with System administrators, developers, and analysts with troubleshooting issues
Perform change management and incident management utilizing documented procedures through Service Now or similar change management tools
Support service recovery procedures
Participate in Problem Management processes to identify solutions for recurring problems
Document problem resolutions and publish knowledgebase
Function as a Subject Matter Expert working with vendor support, System Administrators/Architects on a regular basis to track issues to closure
Support maintenance and migrations on the Authentication Infrastructure
Identify opportunities to automate and standardize information security controls
Reduce risk by analyzing the root cause of issues, their impact, and required corrective actions

Requirements:

5+ years' experience in cybersecurity providing production support around Multifactor Authentication (MFA) and related components
Proficiency in Linux-based environments (RHEL) including terminal commands, Unix shell scripting, critical production server support, application upgrades and project lifecycle/SDLC processes
Experience with MFA systems using Voice, Mobile Soft Tokens and SMS
Experience supporting REST and SOAP API web services calls with Middleware Products like IBM/Apache HTTP Server and Application Servers IBM WASND/Tomcat Servers
Familiarity with IT Service Management (ITSM) processes based on the ITIL framework
Bachelor's degree/University degree or equivalent experience

Nice to have:

Experience with Mobile Biometrics
Good knowledge on Mobile development Platforms (IOS, Android)

What we offer:

Medical, dental & vision coverage
401(k)
Life, accident, and disability insurance
Wellness programs
Paid time off packages including vacation, sick leave, and paid holidays
Discretionary and formulaic incentive and retention awards

Additional Information:

Job Posted:
September 13, 2025

Expiration:
September 29, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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Senior Linux Engineer - Security Biometrics & Production Support