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Linux L3 Systems Engineer - Infrastructure Security

https://www.citi.com/ Logo

Citi

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Location:
United States , New Castle

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Contract Type:
Not provided

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Salary:

96400.00 - 144600.00 USD / Year

Job Description:

Job Overview: 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.

Job Responsibility:

  • Provide Technical support for the Security Infrastructure and Applications Capacity, Performance and Stability reporting and support
  • Help innovate and bring process and technical enhancements
  • Lead initiative to develop/improve scripts and other programs for system monitoring and maintenance
  • Facilitate infrastructure projects and security assessment for the infrastructure with the associated applications in scope
  • Be responsible to assess the risk and associated impact of all operational issues and change events, while reacting quickly to escalate to technology management in a timely manner when required
  • Work closely with the development team to ensure the operational requirements are met during the project transition
  • Work across all levels of the organization with both technical and non-technical stakeholders
  • Proven ability to work with high priority global stakeholders within critical timelines
  • Deploy and design large scale complex security ecosystems

Requirements:

  • 3+ years' relevant data security experience as it relates to the responsibilities and qualifications
  • Proficiency in one or more of these scripting languages – Python, Unix Shell, Perl & PowerShell scripting
  • Strong proficiency with Linux and Windows
  • Hands-on experience working with various flavors of server operating systems
  • Experience with any NoSQL databases will also be considered
  • Must have experience with production server support, application upgrades and project life cycle and SDLC process
  • Deep understanding of TCP/IP technologies and internet routing protocols
  • Experience with RDBMS from application programmer’s perspective
  • Firm knowledge of how to interface with these databases, analyze & write complex queries & procedures
  • Experience with Data Protection Technologies like Physical or Virtual Hardware Security Modules, Public key Infrastructure (PKI), Encryption and Tokenization will be considered a plus
  • Consistently clear and concise written and verbal communication
  • Strong interpersonal and communication skills
  • Strong analytical skills and attention to detail
  • Bachelor’s degree/University degree or equivalent experience

Nice to have:

  • Relevant Certifications are a plus (e.g., Linux+, RHCSA, LFCS, LPIC, MCSE, etc.)
  • Experience with Data Protection Technologies like Physical or Virtual Hardware Security Modules, Public key Infrastructure (PKI), Encryption and Tokenization will be considered a plus
What we offer:
  • medical, dental & vision coverage
  • 401(k)
  • life, accident, and disability insurance
  • wellness programs
  • paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays

Additional Information:

Job Posted:
March 20, 2026

Expiration:
March 24, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
Job Link Share:

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