Lead Infrastructure Engineer - DDI, IPv6

Responsibilities

• Design enterprise DNS architectures and standards to support resilient, scalable name resolution across hybrid environments.
• Engineer IPv6 addressing plans and network designs using 128-bit formats, subnetting, and architecture patterns.
• Implement reverse DNS delegation for IPv6 using ip6.arpa zones and nibble-format delegation models.
• Execute IPv6 transition and mitigation approaches, including Dual-Stack, NAT64, and DNS64.
• Operate core DNS services with an availability-first mindset to ensure consistent performance.
• Troubleshoot complex DNS and connectivity issues using tools like dig and nslookup.
• Analyze routing and protocol interactions, including BGP and OSPFv3, impacting DNS reachability.
• Automate repeatable DNS and IPv6 operational tasks to improve consistency and time-to-recovery.
• Document designs, runbooks, and troubleshooting playbooks to reduce operational ambiguity.

Requirements

• 5+ years of applied infrastructure engineering experience.
• Advanced DNS core competencies, including authoritative and recursive DNS concepts.
• Fluency in IPv6 addressing and architecture, including subnetting and Global Unicast/Unique Local addressing.
• Knowledge of reverse DNS delegation for IPv6 using ip6.arpa zones.
• Hands-on experience with IPv6 transition mechanisms such as Dual-Stack, NAT64, and DNS64.
• Strong networking and diagnostics capability with a practical understanding of TCP/IP layers.
• Working knowledge of routing protocols including BGP and OSPFv3.
• Proficiency with troubleshooting tools such as dig and nslookup.
• Experience operating within controlled change environments involving peer review and documentation.

Preferred Qualifications

• Proficiency with logging, telemetry, and visualization tools such as Splunk, SevOne, ThousandEyes, or Grafana.
• Strong presentation skills with the ability to explain complex DNS/IPv6 concepts to stakeholders.
• Experience building operational dashboards and service health indicators.
• Ability to standardize complex network/DNS patterns into repeatable reference architectures.

About the Company

JPMorganChase is a leading global financial institution offering innovative solutions to millions of consumers, small businesses, and prominent corporate and government clients. With a history spanning over 200 years, we are a leader in investment banking, consumer banking, and asset management.