Senior Application Security & Incident Response Engineer

Thales; Chandler (AZ); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Comprehensive health benefits

Retirement savings plan with company  

Paid time off

Job summary

Thales is seeking a Sr Engineer for the Advanced Security Response Team (ASRT) in the United States. You will lead incident response for web application security, analyze threats, and collaborate with Product, CS, and Security teams to mitigate attacks in real time.

You will be a technical authority on Imperva’s Application Security suite, driving best practices and expanding the global ASR program while maintaining strong customer relationships and ensuring timely resolutions.

Qualifications

• Minimum 4-year bachelor’s degree with 6+ years in application or network security in a customer-facing role and 3 years in Security Engineering/Threat mitigation (or 4 years with a Master’s).
• Proven experience with Internet security and networking technologies (TCP/IP, HTTP, SSL/TLS, Proxies, Firewalls, OWASP Top 10).
• Hands-on experience in identifying BOT behaviors and mitigating BOT attacks and web app vulnerabilities (SQLi, XSS, OWASP Top 10).
• Experience with one or more scripting languages (Python, Bash, Java, etc).

Responsibilities

• Serve as a senior technical resource for the Americas ASR team, providing leadership and mentoring.
• Own the technical resolution of complex customer issues, escalations, and critical incidents with timely communication and root-cause analysis.
• Collaborate with customers, Services Teams, CS, Security Threat Research, Product Management, and Engineering to resolve high-impact issues.
• Analyze traffic, logs, attack trends, and security alerts to identify risks and improve security posture.
• Design and optimize custom security policies to detect and mitigate application-layer attacks with minimal false positives.
• Act as escalation point during large-scale DDoS incidents, zero-day threats, and advanced web exploits.
• Perform forensic analysis of logs and attack payloads to identify vulnerabilities and remediation steps.
• Document findings, create knowledge base articles, and share best practices to improve ASR operations.
• Develop and maintain automation to streamline ASR workflows and incident response.

Skills

Security engineering

Threat mitigation

Incident response

Network security

OWASP Top 10

Python scripting

Education

Bachelor’s degree in Information Systems or Computer Science or Telecommunications or any Technology field

Master’s degree in a technology field with at least 2 years in Security Engineering/Threat mitigation

Job description

Thales is seeking a Sr Engineer for the Advanced Security Response Team (ASRT) in the United States. You will lead incident response for web application security, analyze threats, and collaborate with Product, CS, and Security teams to mitigate attacks in real time.

You will be a technical authority on Imperva’s Application Security suite, driving best practices and expanding the global ASR program while maintaining strong customer relationships and ensuring timely resolutions.