Senior Network Engineer (Dallas, TX -… at Sum Theory · Location…

Job Title: Senior Network Engineer Position Type: Contract to Hire Location: Onsite 5 days a week - Dallas, TX Role Overview: The Senior Network Engineer is an advanced networking professional responsible for the design, implementation, optimization, security, and operational support of enterprise network infrastructure. Serving as a senior technical leader, this role develops networking standards, drives modernization initiatives, architects secure and scalable network solutions, acts as a senior escalation resource, and provides mentorship to other engineers. This position supports WAN, LAN, WLAN, SD-WAN, data center, cybersecurity, and cloud networking environments. Responsibilities: Network Design & Implementation:

• Design, implement, and optimize enterprise network infrastructure.
• Architect secure and scalable network solutions.
• Design, secure, and optimize enterprise networks across WAN, LAN, WLAN, SD-WAN, data center, cybersecurity, and cloud networking environments. Technical Leadership & Modernization:
• Serve as a senior technical leader for the network engineering function.
• Drive modernization initiatives and lead technical projects and modernization efforts.
• Evaluate emerging technologies and solutions.
• Manage multiple priorities and strategic initiatives. Operations, Security & Escalation Support:
• Provide security and operational support for enterprise network infrastructure.
• Act as a senior escalation resource.
• Troubleshoot highly complex networking issues. Standards, Documentation & Mentorship:
• Develop networking and engineering standards and documentation.
• Provide technical mentorship and leadership to other engineers.
• Communicate effectively with executives, engineers, vendors, and business stakeholders. Education:
• Bachelor's degree in Computer Science, Information Technology, Network Engineering, or related field; OR Associate degree with seven (7) years of progressively responsible network engineering experience; OR equivalent combination of education, certifications, training, and experience. Experience:
• 7+ years designing, implementing, troubleshooting, and supporting enterprise network environments.
• Required Experience: Complex Cisco networking environments; wireless infrastructure; firewalls; cloud networking; network security technologies; enterprise infrastructure projects.
• Preferred Experience: Technical leadership and mentoring experience. Technical Knowledge:
• Enterprise Network Architecture: WAN, LAN, WLAN, SD-WAN, Software-Defined Networking (SDN), routing and switching protocols, and network segmentation.
• Data Center Networking: Data center networking architectures and technologies.
• Cloud Networking: Cloud networking architectures and connectivity.
• Network Security: Network security, Zero Trust, firewalls, and secure network design.
• Monitoring & Observability: Monitoring and observability platforms.
• Disaster Recovery: Network disaster recovery planning and implementation.
• Automation & IaC: Network automation and Infrastructure as Code (IaC).
• Project Management: Project management methodologies and technical project delivery. Key Skills:
• Network Engineering: Design, secure, and optimize enterprise networks.
• Technical Leadership: Lead technical projects and modernization efforts.
• Troubleshooting: Troubleshoot highly complex networking issues.
• Standards & Documentation: Develop engineering standards and documentation.
• Technology Evaluation: Evaluate emerging technologies and solutions.
• Mentorship: Provide technical mentorship and leadership.
• Communication: Communicate effectively with executives, engineers, vendors, and business stakeholders.
• Strategic Priorities: Manage multiple priorities and strategic initiatives. Preferred Certifications:
• Cisco: Cisco Certified Network Professional (CCNP Enterprise); Cisco Certified Internetwork Expert (CCIE).
• Cloud: AWS Advanced Networking – Specialty; Microsoft Azure Network Engineer Associate.
• Wireless: Aruba Certified Professional/Expert.
• Other: Equivalent advanced networking certifications.