Principal Engineer, Internet Scanning & Security Research - Cortex Xpanse, Collections
About The Position
The Collections team is the foundational engine behind the Cortex Xpanse Attack Surface Management (ASM) platform. We architect, scale, and orchestrate global internet-scale discovery and scanning infrastructure. In this role, you will design distributed systems that continuously map the entire IPv4 and IPv6 internet, while building high-throughput data pipelines to create the foundation for Xpanse’s Attack Surface Management. This role is unique: you will bridge the gap between high-end security research and production-grade engineering. We need someone who brings deep cybersecurity expertise: understanding vulnerabilities and protocols, and can channel that knowledge into building the scanning systems, detection logic, and data pipelines that power Xpanse at scale. You'll explore emerging scanning techniques, research new vulnerabilities, and prototype detection tools, then harden them into production systems that process petabytes of scan data weekly.
Requirements
- 7+ years building production backend systems, with meaningful exposure to security research or internet measurement
- Strong in at least one of: Go, Rust, Python, Java
- Practical knowledge of network protocols- experience building software that operates at the protocol level across TCP, UDP, TLS, HTTP, DNS, and beyond
- Proficiency with large-scale data analysis - SQL fluency, comfort with petabyte-scale datasets, ability to write complex analytical queries
- Track record of owning complex technical projects from design through production
- Hands-on experience with cloud-native architectures (GCP, AWS, or Azure)
Nice To Haves
- GCP
- Kubernetes
- Terraform
- BigQuery
- PostgreSQL
- MySQL
- BigTable
- Apache Beam
- Contributions to open-source scanning tools or published security research
Responsibilities
- Build and evolve high-performance network scanners that probe the internet at scale
- Design and maintain the layer that defines how each protocol is scanned
- Develop large-scale data processing pipelines that enable security analysis
- Investigate new data sources and perform data analysis to estimate customer impact
- Take ownership of projects, drive them to completion, and support them in production
- Mentor and grow engineers, share best practices, and technical expertise with a multidisciplinary team
Benefits
- restricted stock units
- bonus
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What This Job Offers
Job Type
Full-time
Career Level
Principal
Education Level
No Education Listed
