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# Application Security Penetration Engineer

- **Company:** Citigroup, Inc.
- **Location:** Irving, TX, United States
- **Experience:** Starter
- **Salary:** $96,400.0 - $144,600.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, Java (Programming Language), .NET Framework, Artificial Intelligence, Amazon Web Services, Applications Architecture, Application Frameworks, Software System Penetration Testing, Microsoft Azure, Burp Suite, C Sharp (Programming Language), C++ (Programming Language), Cloud Computing, Static Program Analysis, CompTIA Security+, Cyber Security, Databases, Middleware, Fuzz Testing, Web Servers, Spring Framework, Apache Struts, Python (Programming Language), Nmap, Node.Js, Open Web Application Security, Ruby, Software Safety, Software Engineering, SonarQube, Webinspect, Google Cloud, ReactJS, Large Language Models, Multi-Agent Systems, Software Security, GWAPT, Containerization, AngularJS, Information Technology, Synopsys Black Duck, Nessus, Checkmarx, Appscan, Microservices
- **Published:** October 16, 2026
- **Apply:** https://www.juju.com/job/1_citi-101944223536

## About the Role

Ensure they understand the root causes and true business risks. + Drive remediation by outlining a defense-in-depth approach to business stakeholders. + Propose actionable mitigating controls, code-level remediation solutions, and AI safety guardrails to developers to fully close security gaps. + Keep abreast of emerging offensive security techniques.
Participate in threat modeling exercises and adversarial testing across both traditional and AI-driven technology stacks. + Support pentesting engagements for the firm's critical, top-tier applications. + Research new ways to automate pentest activities, including the use of AI/LLM tooling, to identify vulnerabilities more effectively. **Qualifications** + Minimum of 1-3 years of hands-on experience in penetration testing, application security assessment, or software development ideally in an enterprise environment. + Hands-on experience with dynamic/proxy/network testing tools such as Burp Suite Proxy, AppScan, WebInspect, Nessus, NMAP, or OWASP ZAP. + Hands-on experience with static analysis and software composition tools such as Checkmarx, BlackDuck, SonarQube, or Snyk. + Exposure to AI security/adversarial testing tools such as Garak, PyRIT, Counterfit, or the Adversarial Robustness Toolbox (ART) is advantageous. + Strong foundation in enterprise
programming and scripting languages, including Python, Java, .NET/C#, C/C++, Ruby, and/or NodeJS. + Familiarity with common web and application framework stacks, such as Spring, AngularJS, React, Struts, ASP.NET Core, or AI orchestration libraries. + Deep knowledge of application architectures and enterprise infrastructure, including databases, middleware, web servers, and cloud computing (GCP, AWS, Azure) supporting microservices and containerized workloads. + Deep knowledge of common industry security standards, including OWASP Top 10 and CWE/SANS Top 25. + Working familiarity with emerging AI security standards, including OWASP Top 10 for LLMs, MITRE ATLAS, and NIST AI RMF. **Education** + Bachelor's degree in Computer Science, Cybersecurity, Information Technology, or a related discipline.
Equivalent professional or hands-on experience may be considered in lieu of a degree. + Must have or be willing to obtain industry-accredited security certifications such as OSCP, OSWE, GWAPT, GWEB, GPEN, GXPN, GMOB, CISSP, CEH, CompTIA Security+, or CySA+. This job description provides a high-level review of the types of work performed.