Sr. Network Engineer
Column Technical Services
Full-time
On-site
Chicago, Illinois, United States
Networking & Infrastructure
Column Technical Services is on the lookout for a proficient and seasoned Senior Network Engineer to become part of a dynamic team. The perfect applicant will bring substantial experience in designing, constructing, and maintaining large-scale networks, with a demonstrated capability to oversee both backbone and edge network performance. This position involves spearheading complex projects, working closely with stakeholders, and playing a crucial role in the ongoing enhancement of our network infrastructure. We encourage you to apply for this exciting opportunity today.
Primary Responsibilities:
- Network Design and Deployment:
- Architect and implement functional networks (LAN, WLAN, WAN) across multiple data centers and corporate sites.
- Configure and install network devices such as switches, routers, wireless access points, firewalls, and load balancers.
- Develop and deploy high-availability network solutions tailored to business requirements.
- Integrate technologies like VxLAN with MPLS networks.
- Network Performance and Management:
- Monitor network performance to ensure system availability and reliability.
- Analyze and troubleshoot cloud and local infrastructure, addressing escalated issues from support tiers.
- Utilize expertise in BGP, OSPF, ISIS, MPLS, QoS, IPSEC, DNS, and related protocols to maintain network integrity and performance.
- Implement DDoS mitigation strategies and other edge network security measures.
- Automation and Innovation:
- Deploy and manage automation solutions using tools like Ansible for network tasks and monitoring.
- Propose and implement improvements in network performance, capacity, and scalability.
- Documentation and Reporting:
- Maintain comprehensive and accurate technical documentation for network configurations and processes.
- Communicate effectively with stakeholders and users, providing updates and support as needed.
- Write internal benchmark performance tests, feature definition documents, and technical collateral.
- Security and Compliance:
- Develop, oversee, and test security measures to protect access and ensure disaster recovery readiness.
- Ensure compliance with network security standards, including MACsec/NAC, SSLVPN, and edge security protocols.
- Collaboration and Integration:
- Collaborate with cross-functional teams including Project Managers, Sales Engineers, and implementation teams to deliver robust network solutions.
- Work on integrations involving Cisco, Palo Alto, Azure, and other platforms to support business operations.
Qualifications:
- At least 15 years of experience in large-scale network design, implementation, and management.
- Proficiency in core networking protocols: BGP (with BFD), OSPF, ISIS, MPLS, RSVP, VxLAN, BGP EVPN, QoS.
- Strong understanding of IPSEC, DNS, SSLVPN, MACsec/NAC, CDN, and load balancing.
- Experience with automation tools (e.g., Ansible) for network tasks.
- Proven ability to mentor and lead network engineering teams.
- Excellent problem-solving skills, attention to detail, and the ability to work independently and collaboratively.
- Effective communication and documentation skills.
Preferred Skills:
- Experience with DDoS mitigation and advanced edge network security.
- Familiarity with managed service offerings on MPLS networks.
- Hands-on experience with data center migrations and network architecture planning.
- Technical writing skills for creating performance documentation, feature definitions, and reference architecture notes.