Cyber Defense Manager

Grant Thornton•Philadelphia, PA

1d•$144,000 - $233,300

About The Position

As a Cyber Defense Manager, you will get the opportunity to grow and contribute to our clients' business needs by applying a collection of information and cybersecurity capabilities, including security and privacy, strategy, governance, IT risk, security testing, technology implementation/operations, cybercrime and breach response for the Cybersecurity & Privacy Practice – all with the resources, environment, and support to help you excel. From day one, you’ll be empowered by the greater Risk team to help clients make the moves that will help them achieve their vision and help you achieve more, confidently. Your day-to-day may include: Lead cyber defense engagements focused on adversary behaviors, detection coverage, and safeguard effectiveness across complex enterprise environments. Apply expert knowledge of MITRE ATT&CK to map threat scenarios, identify defensive gaps, and design measurable, threat-informed detection strategies. Engineer, tune, and validate detections across SIEM, EDR, NDR, and log-centric platforms to ensure high-fidelity coverage against real-world TTPs. Assess and strengthen network and system safeguards, including segmentation, hardening, logging architectures, and control configurations. Conduct threat-informed assessments, purple team exercises, and defensive readiness evaluations. Communicate defensive findings, tradeoffs, and recommendations clearly to both technical teams and executive stakeholders. Guide clients through building resilient defense programs, including detection maturity, operational readiness, and continuous improvement. Mentor analysts and contribute to the development of detection playbooks, methodologies, and defensive frameworks. Develop and manage client relationships with the intention to exceed client expectations. Adhere to the highest degree of professional standards and strict client confidentiality. Participate in professional development activities and training sessions on regular basis. Other duties as assigned.

Requirements

Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or a related field is required
Minimum 5 years of related cybersecurity experience in a similar consulting practice or function
CISSP, CISM, GIAC (e.g., GSEC, GCIH, GISP, etc.), cloud security (e.g., AZ-500, AWS Certified Security, Google Cloud Professional Architect / Security Engineer) or other related certifications required
Strong command of MITRE ATT&CK and adversary tradecraft, with the ability to translate behaviors into actionable detections and safeguards.
Deep experience with network defense, system hardening, logging pipelines, and security control implementation
Proven ability to articulate complex defensive issues to both technical and non-technical audiences with clarity and precision
Strong project management skills and the ability to manage multiple engagements and competing priorities in a rapidly growing, fast-paced, interactive, results-based team environment.
Exceptional client service and communication skills, with a demonstrated ability to develop and maintain outstanding client relationships
Strong professional verbal and written skill
Leading and managing one or more of the overarching areas below:
Assessing cybersecurity programs and capabilities against industry leading frameworks (e.g., NIST CSF, CRI Profile) and compliance and regulatory requirements.
Working knowledge of cybersecurity industry leading practices and frameworks, such as NIST CSF, CRI Profile, ISO 27001/2, NYS DFS 500, PCI-DSS, CIS Controls, CIS Benchmarks.
Excellent analytical, organizational and project management skills
Can travel as needed

Responsibilities

Lead cyber defense engagements focused on adversary behaviors, detection coverage, and safeguard effectiveness across complex enterprise environments.
Apply expert knowledge of MITRE ATT&CK to map threat scenarios, identify defensive gaps, and design measurable, threat-informed detection strategies.
Engineer, tune, and validate detections across SIEM, EDR, NDR, and log-centric platforms to ensure high-fidelity coverage against real-world TTPs.
Assess and strengthen network and system safeguards, including segmentation, hardening, logging architectures, and control configurations.
Conduct threat-informed assessments, purple team exercises, and defensive readiness evaluations.
Communicate defensive findings, tradeoffs, and recommendations clearly to both technical teams and executive stakeholders.
Guide clients through building resilient defense programs, including detection maturity, operational readiness, and continuous improvement.
Mentor analysts and contribute to the development of detection playbooks, methodologies, and defensive frameworks.
Develop and manage client relationships with the intention to exceed client expectations.
Adhere to the highest degree of professional standards and strict client confidentiality.
Participate in professional development activities and training sessions on regular basis.
Other duties as assigned.