Lead Infrastructure Engineer - DDI, IPv6

Assume a vital position as a key member of a high-performing team that delivers infrastructure and performance excellence.

Your role will be instrumental in shaping the future at one of the world's largest and most influential companies.

As a Lead Infrastructure Engineer at JPMorganChase within the Enterprise Technology, network services team, you design, operate, and continuously improve enterprise DNS and IPv6 capabilities with a focus on reliability, security, and measurable service outcomes.

You partner with infrastructure, application, and operations teams to deliver scalable network design, accurate name resolution, and strong diagnostics practices in a diverse, inclusive environment.

Job responsibilities



* Design enterprise DNS architectures and standards that support resilient, scalable name resolution across hybrid environments.


* Engineer IPv6 addressing plans and network designs using 128-bit formats, subnetting, and architecture patterns (e.g., GUA, ULA).


* Implement reverse DNS delegation for IPv6 using ip6.arpa zones and nibble-format delegation models.


* Execute IPv6 transition and mitigation approaches (e.g., Dual-Stack, NAT64, DNS64) aligned to application and network readiness.


* Operate core DNS services with an availability-first mindset, ensuring consistent performance and predictable change outcomes.


* Troubleshoot complex DNS and connectivity issues using disciplined diagnostics (e.g., dig, nslookup) across A vs.

AAAA resolution paths.


* Analyze routing and protocol interactions impacting DNS and reachability, including TCP/IP layering and routing protocols (e.g., BGP, OSPFv3).


* Automate repeatable DNS and IPv6 operational tasks to reduce manual effort and improve consistency, auditability, and time-to-recovery.


* Document designs, runbooks, and troubleshooting playbooks that raise team effectiveness and reduce operational ambiguity.


* Uses enterprise-authorized AI capabilities within the work environment to accelerate infrastructure analysis and design documentation, validating outputs and handling operational data according to sensitivity and security requirements.


* Applies reuse-first, AI-assisted practices within delivery and automation routines to identify recurring issues and validate remediation options, ensuring changes are traceable/auditable and aligned to resiliency and security expectations.

Required qualifications, capabilities, and skills


* Formal training or certification on Infrastructure engineering concepts and 5+ years applied experience


* Advanced DNS core competencies, including authoritative and recursive DNS concepts, record types, and operational best practices.


* IPv6 addressing & architecture fluency, including 128-bit address formats, subnetting, and network design with Global Unicast and Unique Local addressing.


* Reverse DNS delegation knowledge for IPv6 using ip6.arpa zones and nibble-format delegations (in cont...