Lead Security Engineer

QLYS_US Qualys, Inc.

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Pune Until 8/21/2026 5+ years exp H-1B sponsor history First posted January 30, 2026 Last posted January 30, 2026
Job description

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

As a Lead Engineer, Security Signatures you will be part of a Qualys Threat Research Unit that is responsible for the research, development, and delivery of emergent vulnerability signatures. This opening is your opportunity to work on a unique security solution in the rapidly expanding fields of penetration testing, vulnerability assessments and cyber security. 

  

Responsibilities 

  • Research and create signatures for the Qualys product to detect vulnerabilities in Industrial Control Systems. 

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

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

  • Build automation for day-to-day tasks. 

 

Qualifications 

  • Experience and strong knowledge in penetration testing and vulnerability management.

  • Knowledge and hands on experience with several types of security vulnerabilities and attacks such as cross-site scripting, privilege escalation, remote code execution.

  • Proficient with regular expressions. 

  • Bachelor's in computer science with 5+ years of experience in Information Security domain or Masters in Computer Science or Cyber Security. 

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

  • Experience with scripting languages, including Python and Bash. 

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

  • System administrator experience on Windows or Unix platforms. 

  • Excellent written and verbal communication skills. 

 

Additional Plus Competencies 

  • Understanding of Lua (preferred), or Python

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

  • Knowledge of container technologies such as Docker and Kubernetes. 

  • Able to handle projects independently. 

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

  • Experience in developing security-related tools/programs. 

  • OSCP and similar certifications. 

About this role

Summary

Researches and develops security signatures for vulnerability detection and exploits.

Job title

Lead Security Engineer

Experience level

5+ years

Minimum experience

5+ years exp

Industry

cybersecurity

Location requirements

Pune, remote work not specified

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

penetration testingvulnerability managementregular expressionspythonbashTCP/IPHTTPDNSFTPSSHTLS/SSLSMTPnetwork analysis

Preferred skills

Luavirtualizationdockerkubernetessecurity toolssecurity programsOSCP

Specializations

penetration testingvulnerability managementcyber securitysignatures creationnetwork analysis
Locations

Structured locations inferred from the posting.

Pune, Maharashtra, India

Work arrangement unknown City
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