Senior L3 Network Engineer - Hybrid, 1-Year Assignment

F2OnSite; Durham (NC); Hybrid; USD 120,000 - 160,000; Full time

Job summary

F2OnSite is seeking a Senior L3 Network Engineer in Durham, NC, to design, implement, and optimize enterprise-level network solutions. The role emphasizes Layer 2/3 architecture, BGP strategies, and secure microsegmentation within a hybrid onsite model.

Ideal candidates bring 10+ years of experience, strong Cisco expertise, and hands-on Terraform/Ansible skills. Travel and on-site work are involved, with interviews spanning remote and on-site rounds.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent professional experience.
• 10+ years of enterprise network engineering experience.
• Experience with Cisco Catalyst platforms (9300, etc.).
• Strong analytical and problem-solving skills.
• Excellent verbal and written communication skills.

Responsibilities

• Design and implement advanced Layer 2 and Layer 3 network architectures using Cisco Catalyst platforms.
• Develop and deploy BGP routing strategies for internal and external connectivity.
• Create network solutions that address complex business requirements and technical challenges.
• Implement and manage microsegmentation technologies to strengthen network security and isolation.
• Use Terraform and Ansible to automate network infrastructure provisioning and configuration.
• Work with cross-functional teams to turn business needs into scalable network designs.
• Diagnose and resolve complex network issues in production environments.
• Maintain network configuration documentation, procedures, and best practices.
• Provide technical guidance and mentorship to junior network engineers.

Skills

Layer 2 concepts

BGP routing

Network design

Layer 3 routing

Microsegmentation

Terraform

Ansible

Communication

Problem solving

Education

Bachelor's degree or equivalent

Tools

Terraform

Ansible

Job description

F2OnSite is seeking a Senior L3 Network Engineer in Durham, NC, to design, implement, and optimize enterprise-level network solutions. The role emphasizes Layer 2/3 architecture, BGP strategies, and secure microsegmentation within a hybrid onsite model.

Ideal candidates bring 10+ years of experience, strong Cisco expertise, and hands-on Terraform/Ansible skills. Travel and on-site work are involved, with interviews spanning remote and on-site rounds.