Information Security Engineer - Black Lotus Labs Threat Researcher (APT)

Principal Security Engineer

Lumen connects the world. We are igniting business growth by connecting people, data and applications – quickly, securely, and effortlessly. Together, we are building a culture and company from the people up – committed to teamwork, trust and transparency. People power progress. We're looking for top-tier talent and offer the flexibility you need to thrive and deliver lasting impact. Join us as we digitally connect the world and shape the future.

The Role

Black Lotus Labs is seeking a Principal Security Engineer on the Research & Analysis team. This team leverages Lumen's global visibility of one of the world's largest and most interconnected IP backbones and a petabyte-scale compute cluster to perform cutting edge threat research, hunting and tracking advanced persistent threat actors (APTs) and emerging criminal activity as the threat actors traverse the internet. They empower customers to stay ahead of the evolving threat landscape.

The Main Responsibilities

• Serve as Threat Research Subject Matter Expert, offering guidance and support to the Black Lotus Labs team on threat hunting activities.
• Conduct threat research across technical data sets, fusing Black Lotus Labs telemetry with third party data sets.
• Use industry-leading technical knowledge of adversary capabilities and infrastructure to define, develop, and implement techniques.
• Lead and enhance threat hunting operations by actively engaging with other research teams.
• Provide expert analysis and strategic insights on emerging threats and vulnerabilities.
• Spearhead thought leadership initiatives by leading Black Lotus Lab's voice at security conferences and internal executive briefings.

What We Look For in a Candidate

• Proven experience in threat hunting and in-depth technical security research.
• Deep understanding of advanced threat hunting methodologies, attacker tactics, techniques, and procedures (TTPs).
• Demonstrated experience building prototype threat hunting solutions and large data analysis tools.
• Proven experience initiating and coordinating technical projects focused on telemetry collection, TTP based threat hunting.
• 5+ years of experience in the IC, DoD or similar tracking and defending against nation state threat activity.
• Exceptional communication and presentation skills.
• Experience presenting at industry conferences and in the media.
• Highly organized with the ability to manage multiple tasks.
• Proven ability to lead and manage complex technical projects.
• Active TS/SCI clearance with poly.

Well-experienced candidates may also have the following skills:

• Proficiency in malware reverse engineering and incident response.
• 5+ years of experience leading teams of technical threat discovery professionals.
• Software development experience in Docker and big data technologies like Hadoop, Spark, and Tensor Flow.

Compensation

This information reflects the anticipated base salary range for this position based on current national data. Minimums and maximums may vary based on location. Individual pay is based on skills, experience and other relevant factors. Location Based Pay Ranges: $149,084 - $198,779 in these states: AL, AR, AZ, FL, GA, IA, ID, IN, KS, KY, LA, ME, MO, MS, MT, ND, NE, NM, OH, OK, PA, SC, SD, TN, UT, VT, WI, WV, and WY. $156,539 - $208,718 in these states: CO, HI, MI, MN, NC, NH, NV, OR, and RI. $163,993 - $218,657 in these states: AK, CA, CT, DC, DE, IL, MA, MD, NJ, NY, TX, VA, and WA. Lumen offers a comprehensive package featuring a broad range of Health, Life, Voluntary Lifestyle benefits and other perks that enhance your physical, mental, emotional and financial wellbeing.

Learn more about Lumen's: Benefits and Bonus Structure.

If you are selected for a position, there will be a background screen, which may include checks for criminal records and/or motor vehicle reports and/or drug screening, depending on the position requirements. We are committed to providing equal employment opportunities to all persons regardless of race, color, ancestry, citizenship, national origin, religion, veteran status, disability, genetic characteristic or information, age, gender, sexual orientation, gender identity, gender expression, marital status, family status, pregnancy, or other legally protected status. Job duties and responsibilities are subject to change based on evolving business needs and conditions.

Application Deadline: 09/19/2025