Senior Security Engineer jobs in United States
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Qualys · 2 hours ago

Senior Security Engineer

Qualys is a company that emphasizes innovation and teamwork to support critical missions globally. As a Senior Security Engineer, you will be integral to the Cyber Fusion Center, focusing on security engineering, threat detection, and incident response to enhance security monitoring capabilities.

Business Process Automation (BPA)ComplianceSecuritySoftware
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H1B Sponsor Likelynote

Responsibilities

Design, onboard, and normalize data sources into the Elastic SIEM platform
Engineer and optimize log ingestion pipelines to improve search performance and query efficiency
Develop advanced detection rules mapped to the MITRE ATT&CK framework
Continuously tune detection logic to minimize false positives and enhance signal-to-noise ratio
Leverage scripting languages (Python, PowerShell, Bash) to automate evidence collection, enrich alerts, and streamline repetitive tasks
Integrate threat intelligence feeds into SIEM/SOAR workflows to support proactive detection and response
Engage in technical investigations
Lead and support technical investigations during security incidents across the enterprise
Build and deploy automated response playbooks within SOAR platforms
Collaborate with Legal, Compliance, and Customer teams during incident response cycles, ensuring consistent communication and transparency
Generate comprehensive technical incident reports for internal and external stakeholders

Qualification

Security engineeringIncident responseSIEM platformsThreat intelligencePythonPowerShellBashTCP/IPWindows/Linux internalsCloud environmentsTechnical investigationsAutomated response playbooksIncident reportsLearning cloud securityIndustry certifications

Required

5–8 years of experience in security engineering, incident response, or SOC operations
Proven hands-on experience with SIEM, SOAR, and EDR/XDR platforms
Proven hands-on experience with log management and threat intelligence integration
Demonstrated ability to lead technical investigations and respond to complex security incidents
Deep understanding of TCP/IP, Windows/Linux internals, and cloud environments (AWS, Azure, OCI)
Proficient in writing and maintaining scripts using Python, PowerShell, or Bash
Experience with Elastic SIEM, malware sandboxing, and network packet analysis tools (e.g., Wireshark)

Preferred

Experience working in a SOC, MSSP, or cyber advisory function
Familiarity with scripting or data querying languages (e.g., Python, SQL) a plus
Passion for learning and applying cloud security best practices (OCI, AWS, Azure)
Industry-recognized certifications (e.g., CISSP, GCIH, GCIA, GCFA)

Company

Qualys is the pioneer and leading provider of information security and compliance cloud solutions.

H1B Sponsorship

Qualys has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (52)
2024 (57)
2023 (45)
2022 (76)
2021 (57)
2020 (71)

Funding

Current Stage
Public Company
Total Funding
$34M
2012-09-28IPO
2004-11-22Series C· $5.6M
2003-11-12Series B

Leadership Team

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Philippe courtot
CEO
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Sumedh Thakar
President & CEO
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Company data provided by crunchbase