Principal Network Detection & Response Engineer

UnitedHealth Group•Eden Prairie, MN

3d•$112,700 - $193,200•Remote

About The Position

As a Principal Network Detection & Response Engineer within our Cyber Operations Group team, you will lead the architecture, deployment, and continuous optimization of enterprise-wide Network Detection and Response (NDR) capabilities. In this role, you will be instrumental in protecting critical enterprise assets by analyzing network telemetry, developing advanced threat detection logic, and orchestrating rapid response strategies against sophisticated cyber threats. You will collaborate closely with threat intelligence, incident response, and infrastructure teams to design resilient, cutting-edge security monitoring solutions across hybrid-cloud and on-premises environments. You’ll enjoy the flexibility to work remotely from anywhere within the U.S. as you take on some tough challenges. For all hires in the Minneapolis or Washington, D.C. area, you will be required to work in the office a minimum of four days per week.

Requirements

5+ years of professional experience in cybersecurity engineering, network security, or intrusion detection/prevention
3+ years of hands-on experience deploying, configuring, and tuning Network Detection & Response (NDR) or Network Traffic Analysis (NTA) platforms (e.g., Corelight, Darktrace, ExtraHop, Zeek/Bro, Suricata)
3+ years of experience analyzing network protocols (e.g., TCP/IP, DNS, TLS, BGP) and conducting deep packet inspection using tools such as Wireshark, Zeek, or Suricata
3+ years of experience integrating network telemetry and security alerts into enterprise SIEM (e.g., Splunk, Sentinel) and SOAR tools

Nice To Haves

Industry certifications in information security or network security (e.g., CISSP, GCIA, GCIH, GNFA, CCNP Security)
Experience engineering security detections for cloud networks and cloud-native services (e.g., AWS VPC Traffic Mirroring, Azure Network Watcher, GCP Packet Mirroring)
Knowledge of the MITRE ATT&CK framework with demonstrated success mapping network detections to adversary techniques
Solid background in decrypting or inspecting SSL/TLS traffic and analyzing encrypted network sessions
Proven ability to communicate complex technical security risks and detection strategies to senior engineering and leadership stakeholders

Responsibilities

Lead the strategy, architectural design, and optimization of Network Detection & Response (NDR) and network security monitoring platforms across hybrid enterprise environments
Develop, test, and tune high-fidelity detection signatures, behavioral rules, and anomaly detection models to identify advanced persistent threats (APTs) and zero-day vulnerabilities
Analyze complex network traffic, packet captures (PCAP), flow data, and encrypted telemetry to uncover evasive malicious activity and lateral movement
Drive automated response workflows and integration between NDR tools, SIEM, SOAR, and Endpoint Detection & Response (EDR) platforms to minimize Mean Time to Detect (MTTD) and Mean Time to Respond (MTTR)
Partner with Threat Hunting, Threat Intelligence, and Incident Response teams to translate emerging cyber threat tactics, techniques, and procedures (TTPs) into actionable detections
Conduct technical reviews, risk assessments, and architectural evaluations of proposed network infrastructure changes to ensure alignment with security detection objectives
Mentor senior and junior security engineers, providing technical guidance, rule reviews, and subject matter expertise in network defense and threat hunting