Cyber Defense DFIR Manager
The Company
NorthMark Strategies is a leading strategic capital firm, combining capital, innovation, and engineering to drive long-term value. From operating complex businesses to backing breakthrough technologies, our mission is to deploy capital and build enduring businesses. Our team combines intelligent risk-taking, operational excellence, exceptional talent, and world-class computing capacity to create shareholder value.
Our company offers a dynamic environment where individuals have the freedom to lead companies toward bold achievements by embracing innovation, leveraging technology, and fostering differentiated business strategies. Our values are Integrity, Ability, and Energy, and the company aims to hire individuals who possess those qualities.
At NorthMark Strategies, we believe the future isn’t something to hope for, it’s something to build. We don’t just invest, we create. Bringing together strategic insight and technical horsepower to deliver outcomes that endure.
The Position
The Cyber Defense DFIR Manager reports to the Director of Cyber Defense and operates within the Office of the CISO. This role owns incident response and digital forensics as a dedicated discipline within the cyber defense function, maintaining and continuously improving the incident response program and entity-specific incident response playbooks across NorthMark Strategies’ diverse ecosystem of operating companies spanning quantitative research, banking, motorsport, and advanced technology ventures.
Foundational elements of the DFIR function already exist. The DFIR Manager will build on them further, operationalize them, and mature the function overall: strengthening forensic standards and tooling, growing incident response capability and bench strength, and designing and leading table top exercises and simulations that pressure-test the organization’s readiness across the Ecosystem. The role is also an incident command resource for significant incidents, partnering closely across cyber defense to ensure a seamless path from detection through investigation, containment, and recovery.
The ideal candidate pairs hands-on digital forensics and incident response expertise with a track record of maintaining incident response plans in a multi-entity environment, direct experience managing and developing a DFIR/IR team, and the program-building instincts to operationalize and mature a DFIR function that is already underway.
Responsibilities
Incident response plan maintenance: Maintain and continuously update the enterprise incident response plan and entity-specific incident response playbooks across the Ecosystem, ensuring every entity has a current, actionable, and legally defensible plan that reflects its regulatory and operational context.
Operationalize and mature the DFIR function: Build on the foundational elements already in place to further operationalize and mature DFIR as a dedicated capability, strengthening tooling, workflows, evidence-handling standards, and operational metrics, and growing the organization’s overall incident response maturity and bench strength over time.
Digital forensics: Lead forensic investigations across host, network, cloud (including AWS, Azure, and containerized/Kubernetes environments), mobile (iOS/Android), and memory evidence in support of security incidents, insider risk cases, and legal/HR matters. Establish and enforce chain-of-custody and evidence-handling practices that hold up to regulatory and legal scrutiny.
Microsoft 365 and Entra forensics: Lead forensic investigations natively within the Microsoft ecosystem, including Unified Audit Log analysis, Microsoft Purview eDiscovery and Content Search, and Graph API-based evidence collection, reflecting where the majority of the organization’s evidence resides.
Forensic reporting and litigation readiness: Produce clear, defensible forensic findings and reports suitable for legal, regulatory, and potential litigation use,…