Senior Firewall Engineer


Phase One Consulting Group is seeking a Firewall Engineer with federal security experience to support a federal agency. This role will be responsible for providing O&M support for engineering, implementing, updating and overall system support for the security tools/systems used across the Enterprise. In addition, the candidate will support the review and analysis of various tools and systems currently on the market, and whether these would be appropriate for their Enterprise.


  • Work directly with SOC function to monitor/manage security logs associated with the Cisco ASA554X devices including all modules.

  • Manage security related controls/policies and IP Fragmentation settings across the enterprise: Enable IP Audit policies, and IV&V on all Firewall configurations

  • Review and propose rule changes to the firewall to ensure operations

  • Plan and conduct complex project studies; includes analyzing multiple data sources and publishing results to the team or to the technical user community

  • Responsible for the planning, design, implementation, organization and operation of Cisco based data communications network and network security devices.

  • Responsible for troubleshooting network and firewall problems, specifically Cisco ASA’s.

  • Monitor that the firewall and network system is adequately monitored to identify and solve data communication problems and user performance issues; this includes understanding chronic issues causing inefficiency in operation and seek resolution.

  • Be a subject matter expert on network and firewall related issues

  • Draft technical requirements, configuration management, and planning documentation

  • Support the Security Impact Analysis (SIA) an analysis that is conducted by the security team to review the extent to which changes to the information system will affect the security state of the system.

  • Participate in testing and planning of operational network segmentation

  • Perform implementation of security and compliance-based use cases based on the NIST 800-53 Rev4 security controls. 

Position Requirements

  • 10+ years of experience in firewall administration, Network and Information Security, network administration, systems programming, systems design, or related technical specialties.  

  • Experience in managing and administering network and firewall changes will be a bonus.

  • In-depth knowledge of TCP/IP and communication protocols. Knowledge of IPSec, GRE tunnels, multicasting and traffic balancing techniques essential.

  • Hands-on experience with all phases of firewall and network operations, firewall change requests, firewall configuration, network services, and network security

  • Understanding of common network services (web, mail, FTP, etc), network vulnerabilities, and network attack patterns

  • Strong analytical and problem solving skills, with broad knowledge of security methodologies, solutions and best practices

  • VPN’s, firewall contexts, and network address translation (NAT) where appropriate

  • Experience with Systems Administration and in-depth knowledge of Windows servers

  • Have experience with multiple open source and commercial testing tools. A non-comprehensive list includes Nessus, App Detective, Metasploit, Burp Suite, and nmap.

  • Advanced understanding of the strengths and weaknesses of security tools. Ability to select the right tool for the job. Ability to configure and troubleshoot tools if necessary.

  • Bachelor's degree in IT or related field

  • Relevant industry certifications are required, including, but not limited to Security+ & Network+ certifications A CCNP certification or higher

  • Candidates must be able to work on-site at Federal Agency located in the Washington, DC area and must be able to pass a U.S Federal government Public Trust Background Investigation (or higher), form SF85P and obtain a client badge, and be a US Citizen


Company Profile

Since 1997, Phase One Consulting Group has supported an impressive portfolio of clients with their strategic and tactical modernization initiatives. Phase One's clients are typically large organizations of 70,000 or more employees with budgets exceeding $15B that benefit from our multifaceted and proven approach that has resulted in top-rated and award winning business transformation programs. 

Phase One Consulting Group is an equal opportunity and affirmative action employer regardless of a person's race, color, religion, national origin, age, disability, military status, gender or sexual orientation.

Meet Some of Phase One's Employees

Jodi H.

VP, Services Division

As the chief coordinator of Phase One’s Services Division, Jodi’s responsible for transforming the productivity of federal agencies with the most efficient and modern technologies and support.

Jerad S.


Tasked with taking Phase One's clients and teams in the right direction, Jerad enthusiastically transforms businesses with proficient and productive Platform as a Service (PaaS) technologies.

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