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Linux L3 Systems Engineer - Infrastructure Security, AVP

Citigroup

Linux L3 Systems Engineer - Infrastructure Security, AVP

Citigroup

NEW CASTLE, Delaware, United States of America

·

On-site

·

Full-time

·

1mo ago

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 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 Relevant Certifications are a plus (e.g., Linux+, RHCSA, LFCS, LPIC, MCSE, etc.) ------------------------------------------------------ For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Anticipated Posting Close Date: Jan 30, 2026 ------------------------------------------------------

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About Citigroup

Citigroup

Citigroup

Public

Citigroup Inc. or Citi is an American multinational investment bank and financial services company based in New York City. The company was formed in 1998 by the merger of Citicorp, the bank holding company for Citibank, and Travelers; Travelers was spun off from the company in 2002.

10,001+

Employees

New York City

Headquarters

Reviews

3.3

4 reviews

Work Life Balance

3.0

Compensation

3.2

Culture

2.8

Career

2.5

Management

2.7

35%

Recommend to a Friend

Pros

Compensation increases for investment banking roles

Legitimate investment banking employer

Internship opportunities available

Cons

Unclear career progression paths

Limited meaningful experience in internships

Compensation raises lower than competitors

Salary Ranges

28 data points

Mid/L4

Senior/L5

Staff/L6

Mid/L4 · Business Risk Intermediate Analyst

1 reports

$77,165

total / year

Base

$67,100

Stock

-

Bonus

-

$77,165

$77,165

Interview Experience

5 interviews

Difficulty

2.8

/ 5

Duration

14-28 weeks

Experience

Positive 0%

Neutral 40%

Negative 60%

Interview Process

1

Application Review

2

Recruiter Screen

3

Programming Assessment

4

Hiring Manager Interview

5

Panel/Superday Interviews

6

Final Decision

Common Questions

Technical Knowledge

Case Study

Behavioral/STAR

Past Experience

Culture Fit