Senior Security Data Engineer

Censys

Senior Security Data Engineer at Censys analyzing large-scale Internet data for AI/ML models. Focusing on transforming telemetry into usable security data for operational improvements.

Posted 5/5/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $153,000 - $212,000 per yearWebsite

Tech Stack

Tools & technologies

GoPythonSQL

About the role

Key responsibilities & impact

Analyze Censys telemetry and derived datasets to identify signals that improve AI/ML model training for classification that affects security outcomes
Build and improve training and evaluation datasets using Internet telemetry, manually curated labels, and analyst-reviewed data
Drive feature discovery, feature selection, and labelling strategies for models that classify entities as benign, suspicious, or malicious
Work on multi-layer labeling and classification problems, where categories such as device type, router, honeypot, or edge service may need to be identified before risk classification
Partner with Research / Detection teams to translate security domain expertise into actionable workflows
Collaborate with ML engineers and software engineers to ensure features, labels, and model inputs are practical to productionize
Contribute to feedback loops and evaluation frameworks that improve precision, recall, confidence, and coverage over time
Build tooling to support the efforts listed above

Requirements

What you’ll need

5+ years of experience in research or software engineering with a security data focus
Experience analyzing large datasets and turning ambiguous data into usable information that solves security problems
Strong programming skills in Go/Python (or similar), plus experience using SQL (or similar) tools to analyze large datasets
Strong communication skills and the ability to work effectively with researchers, ML engineers, software engineers, and other security experts
Comfort working with security-relevant data and applying technical judgment to questions about Internet-exposed hosts, services, and infrastructure.

Benefits

Comp & perks

401k match
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ATS Keywords

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Hard Skills & Tools

AI/ML model trainingdata analysisfeature discoveryfeature selectionlabeling strategiesprogramming in Goprogramming in PythonSQLdataset evaluationdata curation

Soft Skills

communicationcollaborationtechnical judgmentproblem-solvinginterpersonal skills