Senior SOC Analyst

Deep Seas; San Diego (CA); Remote; USD 140,000 - 170,000; Full time

Job summary

DeepSeas is seeking a Senior SOC Analyst (L2) to drive client‑facing detection and response outcomes. You will lead high‑severity incidents, mentor L1/L2 analysts, and turn findings from threat hunting, malware analysis, and forensics into stronger detections and playbooks.

You will leverage MITRE ATT&CK, SIEM/EDR/SOAR tools, and scripting to automate tasks, while collaborating with threat intel and vulnerability teams to stay ahead of threats and improve detection coverage.

Qualifications

• 5+ years in security operations or incident response, including senior leadership.

Responsibilities

• Leads and mentors L1/L2 incident responders during security incidents.
• Coordinates with stakeholders during high-severity incidents.
• Develops and tests incident response playbooks.
• Conducts advanced threat hunting to detect sophisticated adversaries.
• Collaborates with threat intel and vulnerability teams to stay current on threats.
• Provides guidance in root cause analysis and post-incident reviews.
• Develops and tunes detection rules to improve threat detection.
• Uses MITRE ATT&CK to classify threat actor TTPs.
• Drives continuous SOC improvement and reports trends to leadership.
• Conducts leadership briefings on incidents and trends.

Skills

Incident response leadership

Threat hunting

SIEM/EDR/XDR proficiency

Detection content tuning (KQL / SPL /

MITRE ATT&CK knowledge

Forensics (host/memory/network)

Scripting (Python/PowerShell/Bash)

Mentoring juniors

Excellent communication

US citizenship / residence in US

Education

Bachelor's degree in Cybersecurity/Computer Science

Certifications: GCIH, GCFA, GREM, GNFA, OSCP, CISSP

Tools

KQL

SPL

Sigma

YARA

Ghidra

IDA Pro

Volatility

Wireshark

Job description

Senior SOC Analyst

Department: Threat Management: Strategic Services

Employment Type: Full Time

Location: Remote - United States

Description

*This position is contingent on contract award*

Who is DeepSeas

With 30 years of experience in cyber defense, DeepSeas is trusted by nearly 1,000 clients around the world, including Fortune 100 enterprises and mid-market organizations, higher education institutions, municipality and local governments, and federal agencies. Known for its programmatic approach to continuously transforming cyber defense programs, DeepSeas is recognized by Gartner as a top 40 provider of MDR and ranked as a top 5 MDR leader in the 2024 Frost Radar: Global Managed Detection and Response (MDR) Market. In addition to its industry‑leading MDR service, DeepSeas offers a full suite of advisory, compliance, and testing services to support clients on their cybersecurity transformation journeys, with an approach to cyber defense that prioritizes technical expertise, tradecraft, and continuous innovation to deliver unparalleled results.

Position Summary

We're looking for (5) Senior SOC Analyst (L2) to drive the quality of outcomes in DeepSeas' client‑facing detection and response.

You're a seasoned incident responder who leads high‑severity investigations, mentors L1 and L2 analysts, and turns findings from threat hunting, malware analysis, and forensics into stronger detections and playbooks. This role requires a blend of strategic thinking, deep technical aptitude, awareness of the evolving threat landscape, and strong operational execution.

Key Responsibilities

• Leads and mentors a team of L1 and L2 incident responders in handling security incidents.
• Coordinates with internal and external stakeholders during high‑severity incidents.
• Develops, refines, and tests incident response playbooks and procedures.
• Conducts advanced threat‑hunting activities to detect sophisticated adversaries.
• Collaborates with threat intelligence and vulnerability management teams to stay current on emerging threats and vulnerabilities.
• Provides expert guidance in root cause analysis and post‑incident reviews.
• Develops and fine‑tunes detection rules to enhance threat detection capabilities.
• Uses frameworks such as MITRE ATT&CK to understand and categorize threat actor TTPs.
• Drives continuous improvement initiatives within the SOC.
• Generates metrics and reports on incident response activities and trends for leadership.
• Conducts regular briefings to leadership on security incidents and trends.
• Develops and maintains scripts to automate and enhance incident response processes.
• Conducts in‑depth malware analysis to determine malware samples' functionality, origin, and impact.
• Collaborates with threat intelligence teams to correlate malware findings with known threat actor campaigns.
• Provides recommendations to enhance detection and prevention capabilities based on malware analysis findings.
• Leads digital forensics investigations, including memory forensics, to uncover evidence and artifacts related to security incidents.
• Oversees network forensics activities to analyze network traffic logs and detect malicious activities or patterns.
• Serves as a subject matter expert on incident response, providing guidance and advice to DeepSeas and client leadership.

Experience, Education, and Skills Required

Minimum Qualifications

• 5+ years of experience in security operations, incident response, or threat detection, including time operating at a senior (L3) level or leading investigations; or an equivalent combination of education and experience.
• Proven experience leading high‑severity incident response from triage through containment, eradication, and recovery.
• Strong hands‑on proficiency with SIEM, EDR/XDR, and SOAR platforms, including writing and tuning detection content (e.g., KQL, SPL, Sigma, YARA).
• Working knowledge of MITRE ATT&CK and the incident response lifecycle (e.g., NIST SP 800-61).
• Experience with host, memory, and network forensics, as well as static and dynamic malware analysis.
• Scripting proficiency in Python, PowerShell, or Bash to automate investigation and response tasks.
• Experience mentoring or leading junior analysts.
• Excellent written and verbal communication skills, with the ability to brief both technical teams and executive or client audiences.
• This position is open only to U.S. citizens who currently reside within the United States.

Preferred Qualifications

• Advanced certifications such as GCIH, GCFA, GREM, GNFA, OSCP, or CISSP.
• Experience in an MDR or MSSP environment supporting multiple clients.
• Familiarity with reverse engineering and memory forensics tools (e.g., Ghidra, IDA Pro, x64dbg, Volatility).
• Experience building or maturing a threat‑hunting or detection engineering program.
• Bachelor's degree in Cybersecurity, Computer Science, or a related field.

Why DeepSeas?

At Deep Seas, we like to say that heart rates go down, careers take off, and security programs mature. Our values provide the ultimate guide for our daily behavior and decisions. Without these values, we aren’t Deep Seas. They preserve the essence of our organization, reflect the personalities of our Deeps (how we affectionately refer to our teammates), and enable us to exceed expectations. Our values are:

• We are client obsessed.
• We stand in solidarity with our teammates.
• We prioritize personal health and well‑being.
• We believe in the power of diversity.
• We solve hard problems at the speed of cyber.

Information security is everyone's responsibility:

• Understanding and following DeepSeas’s information security policies and procedures.
• Remaining vigilant and reporting any suspicious activity or possible weaknesses in DeepSeas’s information security.
• Actively participating in DeepSeas’s efforts to maintain and improve information security.
• DeepSeas considers this position is as Moderate Risk with a potential to view/access/download restricted/private client/internal data.
• This information must be treated with sensitivity and in the most secure manner.
• HR reserves the right to perform random background/drug screens to ensure the safety of client/DeepSeas data