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Security Research Engineer

Qualys
Foster City, United Statesfull_timeVerifiedPosted 13 Feb 2026
💰 $125,000/yr($100,000/yr$125,000/yr)

About the role

Come work at a place where innovation and teamwork come together to support the most exciting missions in the world!

Job Description:

As a Security Research Engineer, you will be part of a motivated engineering team that is responsible for the research, development, and delivery of vulnerability signatures in the Qualys on-demand security service. This opening is your opportunity to work in the rapidly expanding field of computer security with a company with excellent customer ratings and outstanding growth rates. 

  

Responsibilities:

  • Research and create signatures for the Qualys product to detect vulnerabilities in the areas of Databases, Applications, Operating systems, TCP/IP Protocols, and network devices. 

  • Research new and emerging technologies to identify vulnerabilities and exploits. 

  • Research Zero-day and actively attack vulnerabilities to create remote signatures to identify vulnerable assets. 

  • Build automation for day-to-day tasks. 

  • Closely work with customer support to troubleshoot and triage customer issues such as false positives and false negatives. 

 

Qualifications: 

  • BS in computer science with 3 years of experience in Information Security domain or MS in computer science or cyber security. 

  • In-depth knowledge of TCP/IP, HTTP, DNS, FTP, SSH, TLS/SSL, and SMTP protocols. 

  • Knowledge of OWASP top 10 and familiarity with other web-based attacks. 

  • Experience with scripting languages, including Python and Bash. 

  • Experience with network analysis tools, analysis of packet captures. 

  • Proficient with regular expressions. 

  • System administrator experience on Windows or Unix platforms. 

  • Strong understanding of VPN, Firewalls, Intrusion detection systems (IDS). 

  • Excellent written and verbal communication skills. 

 

Additional Plus Competencies: 

  • Understanding Lua (preferred), or Java. 

  • Knowledge of Virtualization software (VMWare, Virtual PC/Virtual Box, XEN, etc.). 

  • Knowledge of Cloud Platforms (AWS, Azure, Oracle, etc.). 

  • Knowledge of container technologies such as Docker and Kubernetes. 

  • Able to handle projects independently. 

  • Experienced in the use of vulnerability scanners, IDS, and security tools. 

  • Experience in developing security-related tools/programs. 

  • OSCP, CISSP or SANS GIAC certifications. 

Why Join Us?  

  • Work on cutting-edge security research with a talented, collaborative engineering team.  

  • Directly influence the security posture of thousands of customers.  

  • Opportunities for professional development, certifications, and continuous learning.  

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Company

Qualys

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