Lumen Technologies · 20 hours ago
Senior Lead Cyber Defense Engineer
United States
Full-time
Remote
Senior Level, Lead/Staff
$130K/yr - $190K/yr
5+ years expLumen Technologies is a company focused on connecting people, data, and applications to ignite business growth. They are seeking a Senior Lead Cyber Defense Engineer who will drive tooling and infrastructure development to support their incident response mission, integrating security data sources and creating automation for investigations.
Telecom & CommunicationsBig DataInformation TechnologyInformation ServicesInfrastructureOptical CommunicationSecurityTelecommunicationsVoIPWireless
Responsibilities
Develop custom tooling to support active incident response engagements
Build and maintain infrastructure for log analysis, forensics, and threat hunting
Create automation for evidence collection, parsing, and correlation
Write scripts to process large datasets (logs, network captures, memory dumps)
Stand up ad-hoc environments (VMs, containers, cloud resources) as investigations require
Integrate with SIEMs, EDR platforms, and threat intelligence feeds
Document tools sufficiently for team use while maintaining development velocity
Qualification
Required
3+ years development experience (Python, Go, Bash, Rust, or similar)
2+ years in incident response, SOC, or security operations
Comfortable building solutions without detailed requirements
Log analysis and parsing (ELK, Splunk, or custom)
Cloud infrastructure (AWS/GCP/Azure) - IaC a plus
Containerization (Docker, Kubernetes basics)
Forensic artifacts (Windows/Linux/Mac)
Network traffic analysis
Ability to context-switch rapidly between projects
Strong debugging and troubleshooting instincts
Preferred
DFIR certifications (GCIH, GCFA, GNFA)
Experience with memory forensics (Volatility)
Malware analysis or reverse engineering exposure
Familiarity with MITRE ATT&CK framework
Prior MSSP, consulting, or in-house IR team experience
Benefits
Health
Life
Voluntary Lifestyle benefits
Company
Lumen Technologies
Lumen delivers the most secure platform for applications and data to help businesses, government and communities deliver amazing experiences
10001+ employees
H1B Sponsorship
Lumen Technologies has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (24)
2024 (21)
2023 (27)
2022 (29)
2021 (18)
2020 (49)
Funding
Current Stage
Public CompanyTotal Funding
$2.44B2025-09-04Post Ipo Debt· $425M
2025-08-04Post Ipo Debt· $2B
2023-05-22Post Ipo Equity
Leadership Team
Kate Johnson
President and CEO
Sean Alexander
Senior Vice President of Connected Ecosystems
Recent News
2026-02-08
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2026-02-07
2026-02-04
Company data provided by crunchbase