Senior Network Engineer — IPv6 at TalentCollyde in Washington, D.C.
- Company: TalentCollyde
- Location: Washington, D.C.
- Posted: Sep 24, 2026
- Type: Full-time
- Experience: 7+ years
Overview
We are seeking a Senior Network Engineer — IPv6 with deep expertise in IPv6 technologies to support network assessment, design, testing, and migration initiatives. This role focuses on IPv4/IPv6 dual-stack environments, multicast routing, and Cisco networking platforms.
Job description
- We are seeking a Senior Network Engineer — IPv6 with deep expertise in IPv6 technologies to support network assessment, design, testing, and migration initiatives. This role focuses on IPv4/IPv6 dual-stack environments, multicast routing, and Cisco networking platforms.
- The ideal candidate will have extensive hands-on experience designing and implementing IPv6 solutions, validating network infrastructure, troubleshooting complex routing environments, and developing technical documentation to support large-scale network initiatives.
Responsibilities
- IPv6 Network Assessment
- Conduct comprehensive assessments of existing network infrastructure, including routers, switches, firewalls, and end-host systems, to evaluate IPv6 readiness.
- Identify gaps in existing IPv4 configurations and develop prioritized roadmaps for IPv6 integration.
- Validate hardware and software compatibility with IPv6, including Cisco IOS and IOS-XE features.
- Document current-state network topology and provide detailed findings and recommendations to stakeholders.
- Network Design
- Architect IPv4/IPv6 dual-stack solutions that maintain backward compatibility while enabling IPv6 functionality.
- Design scalable IPv6 addressing plans.
- Develop multicast routing designs for IPv6 environments.
- Create high-level and low-level design documentation (HLD/LLD), including topology diagrams, IP allocation schemes, and routing policy specifications.
- Collaborate with security, systems, and application teams to ensure end-to-end IPv6 compatibility.
- Testing & Implementation
- Develop and execute comprehensive test plans for IPv6 deployment scenarios, including:
- Dual-stack environments
- Tunneling technologies (6in4, GRE, ISATAP)
- Translation mechanisms (NAT64/DNS64)
- Perform lab-based proof-of-concept (PoC) testing before production deployment.
- Validate multicast functionality, routing protocol behavior, and QoS policies in IPv6 environments.
- Troubleshoot complex issues across dual-stack networks and perform root-cause analysis.
- Develop production migration procedures, including change management documentation and rollback plans.
- Serve as a subject matter expert (SME) for IPv6 and multicast technologies.
- Mentor junior engineers and support knowledge transfer on IPv6 best practices.
- Participate in Change Advisory Board (CAB) reviews and provide technical input on network changes.
Requirements
- 7+ years of progressive network engineering experience in enterprise or service provider environments.
- Demonstrated hands-on experience with IPv6 addressing, routing, and migration strategies.
- Proven experience designing and operating IPv4/IPv6 dual-stack networks.
- PIM-SM
- IGMP
- MLD
- Proficiency with OSPFv2/OSPFv3 and BGP, including IPv6 address families.
- Hands-on experience with Cisco routing and switching platforms.
- Cisco CCNP (Enterprise or Service Provider) certification or equivalent industry experience.
- Strong technical documentation skills, including network designs, test plans, and assessment reports.
- Candidates must be currently authorized to work in the United States for any employer. This position does not offer employment visa sponsorship.
- Cisco CCIE certification (Enterprise Infrastructure or Service Provider).
- Experience with network automation tools such as Python or Ansible for IPv6 deployments at scale.
- Familiarity with SNMP, NetFlow, and network monitoring tools in IPv6 environments.
- Experience implementing security policies and ACLs in dual-stack networks.
- Previous experience participating in or leading large-scale IPv6 migration projects.
- Understanding of federal or regulatory IPv6 compliance frameworks, such as OMB M-21-07.
Skills
Required
- IPv4/IPv6 dual-stack networks
- OSPFv2/OSPFv3 and BGP
- Cisco routing and switching platforms
- Technical documentation
- Network assessment and design
- Troubleshooting and root-cause analysis
Preferred
- Cisco CCIE certification
- SNMP, NetFlow, network monitoring tools
- Large-scale IPv6 migration projects