Tenable is the vulnerability-management leader — the company behind Nessus and Tenable.io. Public since 2018. Recently expanded into cloud security (Tenable Cloud Security via Ermetic acquisition) and OT/ICS. The interview emphasizes vulnerability data modeling, scanner engineering, and exposure-management at enterprise scale.
Process
Recruiter screen → 60-minute coding phone (DSA medium) → onsite virtual: 2 coding, 1 system design, 1 craft deep-dive, 1 behavioral. Cycle: 3–5 weeks.
What they actually ask
- Design a network scanner that handles millions of hosts
- Design a vulnerability database with CVE/CVSS/CPE relationships
- Design a cloud-posture assessment pipeline (CSPM)
- Coding: medium DSA, often with parsing, graph, or scheduling framing
- Behavioral: customer empathy, ownership, working in security domain
Levels and comp (2026)
- SE II: $140K–$180K total
- Senior SE: $200K–$265K
- Staff: $285K–$380K
- Principal: $400K–$540K
Prep priorities
- Be fluent in C/C++ (Nessus engine), Go, or Python (cloud-side)
- Understand vulnerability detection, CVE/CWE/CVSS, network protocols
- Brush up on cloud-security posture, IaC scanning, and identity-attack paths
Frequently Asked Questions
Is Tenable remote-friendly?
Hybrid in Columbia MD (HQ), Austin, Dublin, Tel Aviv. Many engineering roles fully remote within US.
How does Tenable compare to Rapid7 or Qualys?
Tenable leads in vuln-management depth (Nessus is the de-facto scanner). Rapid7 has a broader product line. Qualys is the legacy enterprise option. Comp is mid-tier security; below FAANG.
What is the engineering culture?
Mature, customer-driven, calmer pace post-Ermetic integration. Strong work-life balance.