**Description:** Citi Infrastructure Defense perimeter reliability engineering is a network security subject matter expert team responsible for the delivery and support of high performance, low-latency security infrastructure protecting Citi’s electronic trading applications. **Responsibilities include:** • Plan, build and execute technical solution designs for the delivery of both high performance and resilience information security technologies to support Citi’s Low Latency Electronic Trading environments. • Produce high quality documentation, schematics and presentation materials as needed • Participate in various reporting functions, analysis of metrics, key performance indicators and vulnerability remediation initiatives • Ensure the continued stability and resilience of the infrastructure by adhering to strict change management guidelines • Provide individual leadership in the realm of change, incident, and problem management • Form collaborative working relationships across geographical boundaries with other internal functions for the purpose of managing internal or external client requirements in alignment with business needs and company policies/standards • Troubleshoot complex connectivity issues often involving multiple support teams • Adhere to corporate and Information Security and other functional standards and controls **Skills and Qualifications:** • Professional to expert level proficiency, hands-on skillset including command-line and central management platform • Network knowledge of routing, switching and wide area networking with understanding of industry standard command line syntax, inclusive of modern network virtualization concepts to a professional level proficiency • A hands-on practical familiarity with Network Security capabilities including: Firewalls, ACL’s, intrusion detection, proxies, vulnerability scanning, DNS, DDoS Mitigation, SIEM platforms Also desired/emphasized are: • A good level of understanding of service management fundamentals such as ITIL for change management and incident management • Any operational exposure working within a bank or financial institution would be a positive as would basic scripting capabilities i.e. Perl, Python, Bash, Powershell and basic understanding of Unix/Linux CLI • Basic to intermediate knowledge of well-known public cloud environments (IaaS, PaaS) and cloud native security controls that are available to protect cloud based resources. **Relevant Certifications:** Check Point, Palo Alto firewalls. CISSP or CCNA/CCNP as a plus **Education Level Required** : Bachelor's Degree in Computer Science, Information Systems or related fields preferred. **Years of Related Experience** : 4------------------------------------------------------ **Job Family Group:** Technology ------------------------------------------------------ **Job Family:** Systems & Engineering ------------------------------------------------------ **Time Type:** Full time ------------------------------------------------------ **Most Relevant Skills** Please see the requirements listed above. ------------------------------------------------------ **Other Relevant Skills** For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ _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 (https://www.citigroup.com/citi/accessibility/application-accessibility.htm)_ _._ _View Citi’s_ _EEO Policy Statement (https://www.citigroup.com/global/eeo-aa-policy)_ _and the_ _Know Your Rights (https://www.eeoc.gov/sites/default/files/2023-06/22-088\_EEOC\_KnowYourRights6.12ScreenRdr.pdf)_ _poster._ Citi is an equal opportunity and affirmative action employer. Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.