Network Engineer Level III (Firewall)

ActioNet, Inc.; Arlington (VA); On-site; USD 100,000 - 130,000; Full time

Job summary

A leading IT service provider in Arlington, VA seeks a Network Engineer - Level III responsible for designing and managing complex network systems. Key responsibilities include leading network projects, optimizing performance, and mentoring junior engineers. Applicants should have a relevant degree and substantial experience in network engineering, along with expertise in advanced networking protocols and security frameworks. The position emphasizes leadership and independent working in high-pressure environments, offering an equal opportunity workplace.

Qualifications

• 7 years of experience in network engineering or a related IT role.
• Expertise in advanced networking protocols.
• Proficiency in managing enterprise-level network hardware and software.

Responsibilities

• Design and implement advanced network architectures.
• Lead planning and execution of network upgrades.
• Perform troubleshooting and root cause analysis.

Skills

Advanced networking protocols (MPLS, BGP, QoS)

Enterprise network hardware management

Network security frameworks and tools

Cloud networking solutions (AWS, Azure)

Leadership and communication

Analytical skills

Education

Bachelor's degree in Information Technology or related field

Tools

Cisco Certified Network Professional (CCNP)

Juniper Networks Certified Professional (JNCP)

Job description

Position

Network Engineer - Level III

Location

Rosslyn, VA

Clearance

Secret

Overview

The Network Engineer Level III is a senior IT professional responsible for leading the design, implementation, and management of complex network systems. This role involves resolving high‑level network issues, optimizing infrastructure for scalability, and ensuring compliance with security and performance standards. The Level III engineer provides strategic guidance, mentors junior staff, and plays a key role in planning and executing enterprise‑level network projects.

Responsibilities

• Design and implement advanced network architectures to support organizational goals and scalability.
• Lead the planning and execution of network upgrades, migrations, and expansions.
• Perform advanced troubleshooting and root cause analysis for critical network issues.
• Optimize network performance and scalability through proactive monitoring and adjustments.
• Develop and enforce network policies, procedures, and security protocols.
• Manage the lifecycle of network hardware and software, including procurement and upgrades.
• Collaborate with stakeholders to assess and address long‑term network requirements.
• Document network designs, configurations, and operational procedures for knowledge sharing.
• Mentor and train junior engineers to build team expertise and capabilities.
• Ensure compliance with federal IT security standards such as FISMA, NIST, and other applicable regulations.

Qualifications & Skills

• Bachelor’s degree in Information Technology, Computer Science, or a related field (or equivalent experience).
• 7 years of experience in network engineering or a related IT role.
• Expertise in advanced networking protocols such as MPLS, BGP, and QoS.
• Proficiency in managing enterprise‑level network hardware and software.
• Strong understanding of network security frameworks and tools, including firewalls and intrusion detection systems.
• Experience with cloud networking solutions such as AWS or Azure. Relevant certifications such as Cisco Certified Network Professional (CCNP) or Juniper Networks Certified Professional (JNCP) are highly desirable.
• Excellent leadership, communication, and project management skills.
• Ability to work independently and lead cross‑functional teams in high‑pressure environments.
• Strong analytical skills to assess and improve network performance and reliability.

ActioNet is an equal opportunity employer and values diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.