Systems Security Specialist – Penetration Testing

Job Description

Company: MATRIX SYSTEMS & TECHNOLOGIES INC

Location: Baltimore, US

Benefits:

• Health insurance

• Paid time off

• Training & development

Matrix Systems and Technology is seeking a Systems Security Specialist to perform internal and external penetration testing of networks, web applications, API’s, and cloud environments to identify security vulnerabilities and exploit paths, and other related tasks.

Duties/ Responsibilities:

• Conduct internal and external penetration testing of networks, web applications, APIs, and cloud environments to identify security vulnerabilities and exploit paths.

• Perform red team engagements simulating real-world adversary tactics, techniques, and procedures (TTPs) aligned with MITRE ATT&CK.

• Execute vulnerability assessments and validate remediation efforts through retesting and technical verification.

• Develop comprehensive penetration testing reports, including executive summaries, risk ratings, proof-of-concept evidence, and actionable remediation guidance.

• Perform threat modeling and attack surface analysis to identify high-risk exposure areas and privilege escalation pathways.

• Conduct secure configuration reviews of operating systems, network infrastructure, cloud platforms, and identity systems.

• Evaluate application security through dynamic and manual testing techniques, including authentication, session management, input validation, and access control testing.

• Review source code for security weaknesses and secure coding gaps, particularly in C/C++, Python, Java, or similar languages. Develop and maintain custom scripts or tooling to automate testing activities and enhance offensive security capabilities.

• Support incident response activities by recreating attack chains, validating compromise scenarios, and identifying root causes. Assess Zero Trust implementations, micro-segmentation strategies, and identity-based security controls for effectiveness.

• Conduct phishing simulations and social engineering exercises to evaluate user awareness and organizational resilience.

• Provide technical briefings to executive leadership and technical stakeholders regarding risk posture and remediation prioritization.

• Collaborate with engineering, DevOps, and infrastructure teams to remediate identified vulnerabilities and strengthen security architecture.

• Contribute to the development of security policies, testing methodologies, and enterprise security standards.

• Support compliance efforts by mapping testing results to NIST, OWASP, CIS, or other applicable security frameworks.

• Participate in continuous improvement of penetration testing methodologies, tools, and adversary emulation strategies.

• Adhere to all security, change control, and Project Management Office (PMO) policies, processes, and methodologies.

Minimum Qualifications:

• A Minimum eight (8) years of progressive experience in cybersecurity

• A minimum of five (5) years performing penetration testing or red team engagements.

• A minimum of five (5) years conducting network penetration testing, web application and API testing, internal and external vulnerability assessments and threat modeling and attack path analysis

• A minimum of five (5) years developing and delivering formal penetration test reports, including executive summaries and technical remediation guidance.

• A minimum of five (5) years supporting incident response investigations and validation testing.

• A minimum of five (5) years with common penetration testing tools (e.g., Metasploit, Burp Suite, Nmap, Wireshark, Nessus, etc.).

• Strong knowledge of Secure coding practices, Application security testing (SAST/DAST concepts), Network architecture and segmentation and Identity and access management concepts

• A minimum of five (5) years of demonstrated scripting or development ability in at least one language (e.g., Python, C/C++, PowerShell, Bash).

• A minimum of five (5) years of working with NIST Cybersecurity Framework, NIST 800-53 or similar federal control frameworks, MITRE ATT&CK and OWASP Top 10 A minimum of five (5) years of experience mapping findings to security control frameworks.

• At least one recognized offensive security certification (e.g., OSCP, GPEN, GXPN, CEH, or major experience can substitute for certification).

• Demonstrated ability to communicate technical findings to executive and non-technical audiences, and provide actionable remediation recommendations. Demonstrated experience working in government or highly regulated environments.

Preferred Qualifications:

• A Minimum ten (10) years of progressive experience in cybersecurity

• A minimum of eight (8) years of experience in Advanced Offensive Security:

• Experience leading red team engagements.

• Experience performing adversary emulation exercises.

• Experience conducting phishing and social engineering simulations.

• Experience performing purple team exercises.

• A minimum of five (5) years of experience in Zero Trust & Architecture:

• Experience designing or assessing Zero Trust implementations.

• Experience evaluating micro-segmentation strategies and identity-centric controls.

• A minimum of five (5) years of experience in Cloud & Modern Infrastructure:

• Experience performing security assessments in AWS or Azure environments, Containerized environments (Docker/Kubernetes) and Infrastructure-as-Code deployments

• Experience testing CI/CD pipelines.

• A minimum of ten (10) years of experience in Software Development Depth:

• Strong low-level development knowledge (kernel, assembly, embedded systems) that supports advanced exploit analysis.

• Experience reviewing source code in JAVA or other compiled languages for vulnerabilities.

• A minimum of ten (10) years of experience in Government in the following:

• Experience supporting federal or state government security programs. Familiarity with FedRAMP, FISMA, or IRS Pub 1075 environments.

Source: Indeed