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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Cyber Security Engineer III - **Company:** MILLENNIUM - **Location:** Hanscom Air Force Base, MA, United States - **Experience:** Expert - **Salary:** $125,000.0 - $135,000.0 - **Contract:** Permanent contract - **Skills:** Cyber Security, Information Systems, Information Systems Security Architecture Professional, Network Security, Network Diagrams, Secure Coding, Software Engineering, Software Vulnerability Management, Wide Area Networks, Connectivity Problems, Tenable Nessus, Nessus, Firewall Services Module, Legacy Systems - **Published:** August 22, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9063723/cyber-security-engineer-iii ## About the Role * ALL candidates MUST have an active top secret clearance to qualify for consideration. * BS/BA Degree and 7+ yrs of experience and 5 yrs within DoD. * Strong understanding of cybersecurity principles, practices, and technologies * Risk Management Framework (RMF), with emphasis on taking projects from Step 1 to Step 5 * Vulnerability Management, Tenable Nessus (ACAS-DoD version of Nessus) STIGs, capable of applying system security engineering expertise to various client/server environments. Business Development Assist with Business Development activities as required to support Millennium's strategic business objectives, which may include but not limited to participation in technical interviews, creation of technical documentation, general proposal writing support and proposal color reviews. Physical Requirements * Must be comfortable with prolonged periods of sitting at a desk and working on a computer. * Must be able to lift up to 10-15 pounds at a time. ## Description Millennium Corporation is hiring a Cyber Security Engineer III to join an effort based out of Hanscom AFB in a hybrid capacity. ALL candidates MUST have an active top secret clearance to qualify for consideration. Duties include, but not limited to: * Serve as a technical point of contact and subject matter expert for ISSO-related matters. * Complete security assessments on the AOC WS development suites, prepare the final security assessment reports, which includes technical recommendations for both STIGs and ACAS findings. * Provide technical input, recommendations, and assistance with the implementation of cyber security approaches, methods and solutions that incorporate and maintain compliance to requirements resulting from laws, regulations, and other DoD and AF guidance. * Assess proposed changes to information systems, their environment of operation, and mission needs that could affect system authorization. * Provide purposeful security architecting, design, development, and configuration of information systems to the AOC WS ISSM. Provide inputs to the AOC WS ISSM for designing and developing organizational information systems and upgrading legacy systems. * Employ best practices when implementing security requirements for information systems including software engineering methodologies, system/security engineering principles, secure design, secure architecture, and secure coding techniques. * Apply knowledge of technical, analytical skills to ensure the confidentiality, integrity, and availability of all information systems assets and ensure compliance with company policies, procedures, contractual, and regulatory requirements. * Responsible for supporting LAN/WAN security solutions including creating and maintaining LAN/WAN security standards and design documentation * Stay ahead of cyber security developments, recommend cutting-edge security solutions, and manage the integration of these technologies into existing AOC WS development suites. * Develop and implement network security policies, ensuring alignment with legal and organizational standards, and conduct regular system audits to identify and mitigate vulnerabilities. * Investigate, monitor, and troubleshoot firewall-related issues including performance and connectivity problems and security logs to identify and respond to potential threats and vulnerabilities, conducting routine PAN OS checks for monitoring and analysis. * Maintain detailed and accurate documentation of firewall configurations, changes, and network diagrams. * ACAS experience required ## Related Videos - [How to Cause (or Prevent) a Massive Data Breach- Secure Coding and IDOR](https://www.wearedevelopers.com/videos/39-how-to-cause-or-prevent-a-massive-data-breach-secure-coding-and-idor) - [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) - [How GitHub secures open source](https://www.wearedevelopers.com/videos/1450-how-github-secures-open-source) ## Related Articles - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities) - [Events like RSAC Get You CISOs. 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