[Remote] Detection & Response Engineer

Remote, USA
Posted Jun 12, 2026
Full-time

Note: The job is a remote job and is open to candidates in USA. Expel is a fast-growing cybersecurity company focused on managed security solutions. The Detection & Response Engineer will enhance threat detection capabilities, improve SOC analyst efficiency through automation, and contribute to the development of detection strategies within the company.

Responsibilities

  • Implement, maintain and iteratively improve Expel's ability to detect and investigate threats using integrated technologies with limited direction
  • Contribute to the growth of Expel’s detection strategy and capability through creation of detections for Expel’s proprietary rule engine
  • Maintain documentation in support of Expel’s detection and response content
  • Improve SOC analyst efficiency by automating investigative workflows using an orchestration framework written in Python
  • Evaluate technology APIs to design detection and response solutions to contribute to improving the value and efficiency in Expel’s Workbench platform
  • Contribute to and thrive in a culture of experimentation, agile, quality and continuous improvement among the team
  • Participate in the team’s research and monitoring of the latest threat landscape and subsequent detection and response automation development

Skills

  • 1+ years of experience with detection and response tools, particularly EDR, NSM, and SIEM
  • 1+ years of experience writing, deploying and tuning custom detections based on research or investigative work against common data sets (Windows Event Logs, auditd, CloudTrail, and similar datasets.)
  • Proficiency of Python, Go or other object oriented programming languages
  • Strong understanding of Windows, macOS and Linux operating systems and command line tools
  • Knowledge of networking basics, such as TCP/IP and OSI model
  • Working knowledge and observations of attack vectors, threat tactics, and attacker techniques
  • Understanding of cloud infrastructure platforms and their Identity and Access Management (IAM) models
  • Bachelor's degree in Computer Science or Information Security strongly preferred
  • 3+ years of professional experience in information technology or security operations would be ideal but not required

Benefits

  • Unlimited PTO (which we model and encourage)
  • Work location flexibility
  • Up to 24 weeks of parental leave
  • Really excellent health benefits

Company Overview

  • Expel is a security operations provider that offers managed detection and response, remediation, phishing support, and threat hunting. It was founded in 2016, and is headquartered in Herndon, Virginia, USA, with a workforce of 201-500 employees. Its website is http://www.expel.com.

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