Offensive Security Leader

Company: DeepSeas
Location: San Diego
Posted on: February 16, 2026

Job Description:

Job Description Job Description Description 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, as well as municipalities and local governments. 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. Key Responsibilities Lead and manage the people, processes, and performance of an offensive security operations. Serve as a client-facing subject matter expert, providing strategic guidance, executive briefings, and advisory support on domain-specific initiatives. Partner with Sales, Account Management, and Delivery teams to support client retention, expansion, and new business opportunities. Ensure SLA and KPI adherence within the domain while driving operational maturity and continuous improvement. Collaborate with other domain leaders to ensure integration of capabilities across the Cyber Fusion Center. Own the development and refinement of playbooks, methodologies, and frameworks that improve service quality and scalability. Develop and mentor team members, building a pipeline of talent and advancing professional development across the domain. Stay current on emerging threats, technologies, and industry best practices, applying them to enhance client outcomes and service offerings. Represent DeepSeas at client engagements, industry forums, and thought leadership opportunities as a recognized expert in the domain. Skills Knowledge and Expertise 10 years of experience in cybersecurity with deep expertise in offensive security. Proven track record of leading teams, managing client-facing engagements, and delivering measurable security outcomes. Strong understanding of adversary TTPs, frameworks (MITRE ATT&CK, Cyber Kill Chain), and intelligence-driven defense models. Demonstrated ability to translate technical outcomes into strategic insights for business and executive stakeholders. Experience driving operational efficiency and continuous improvement across teams. Excellent leadership, mentoring, and communication skills with the ability to influence at all organizational levels. Strong client engagement skills with a history of supporting account retention and business growth. Bachelor’s degree in Cybersecurity, Computer Science, or related field (or equivalent work experience). Advanced industry certifications strongly preferred (CISSP, CISM, GIAC, OSCP, GCTI, etc.). Why DeepSeas? At DeepSeas, 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 DeepSeas. 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. This is your chance to join a supportive crew of teammates and an industry-leading organization that values opportunities for growth. If DeepSeas sounds like a good fit for you, send us your resume and let’s talk! 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

Keywords: DeepSeas, Beverly Hills , Offensive Security Leader, IT / Software / Systems , San Diego, California