Endpoint Engineer, Data Security

Posted 5 days ago

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About the role

  • Endpoint Engineer building Ent’s endpoint data-protection layer for enterprise workspace security. Classifying sensitive data, controlling exfiltration channels, and integrating on-device intent intelligence.

Responsibilities

  • Build Ent's endpoint data-protection layer to classify sensitive data, trace its movement, and enforce policy at egress
  • Instrument and control exfiltration channels including USB, printing, clipboard, drag-and-drop, screen capture, network shares, Bluetooth/AirDrop, email, browser uploads, sync clients, and AI tools or agents
  • Implement on-device content inspection and classification using patterns, keywords, dictionaries, document matching, fingerprinting, file and structure identification, and OCR
  • Integrate Ent's on-device small language model into classification and intent decisions
  • Build data lineage and provenance tracking across copying, renaming, transformation, archiving, compression, and re-encoding
  • Implement interception plumbing using Windows minifilters and ETW, macOS Endpoint Security Framework and Network Extensions, Linux fanotify and eBPF, and browser extension hooks
  • Build labeled corpora, measure detector false-positive and false-negative rates, and tune classification quality
  • Budget CPU, memory, and I/O for content scanning without blocking, delaying, or corrupting legitimate workflows
  • Produce forensic incident evidence covering who, what data, channel, and intent
  • Own customer escalations involving missed egress paths and application-compatibility conflicts, converting recurring patterns into permanent fixes
  • Partner with product, security research, AI, and compliance stakeholders to map endpoint controls to GDPR, HIPAA, PCI DSS, CCPA, and export-control requirements

Requirements

  • 5+ years shipping production systems software in C/C++
  • Experience with an endpoint agent deployed at enterprise scale
  • Direct experience building or operating an endpoint insider-risk, data-security, or CASB/SASE data-protection product
  • Strong operating system internals knowledge on at least one platform
  • Experience with file system filtering, process and handle interception, and the user/kernel boundary
  • Hands-on content inspection and data classification experience
  • Knowledge of pattern-based detection, fingerprinting and hashing schemes, file format parsing, archives, and Office/PDF container formats
  • Experience controlling USB/removable media, print, clipboard, and HTTPS upload egress channels
  • Multi-threaded, performance-sensitive engineering against measured latency and throughput budgets
  • Strong debugging and profiling skills on real user machines
  • Experience investigating application compatibility conflicts involving security agents
  • Precision-focused approach with instrumentation for false-positive and false-negative rates
  • Clear written and verbal communication with distributed teams and customer-facing stakeholders
  • Bonus: OCR, ML-based classification, embeddings or LLM-based content understanding for data protection
  • Bonus: data lineage or provenance tracking
  • Bonus: cross-platform development across Windows and macOS; Linux and browser extension development
  • Bonus: encryption, rights management, or endpoint key handling
  • Bonus: regulatory compliance and audit-evidence design
  • Bonus: insider-threat investigation workflows or AI-agent data governance

Benefits

  • Meaningful equity on top of salary
  • 90% of medical, dental, and vision coverage paid by Ent
  • 75% coverage for dependents
  • Flexible PTO
  • 12 weeks of fully paid maternity leave (birth, adoption, or foster)
  • 8 weeks of fully paid paternity leave
  • $100 monthly lifestyle account for fitness, wellness, learning, and more
  • $500 home office stipend for remote employees

Job title

Job type

Full Time

Experience level

Mid levelSenior

Salary

Not specified

Degree requirement

No Education Requirement

Tech skills

LinuxMacOSC++

Location requirements

RemoteNorth America

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