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United Airlines · 2 weeks ago

Principal Engineer - IT System

Chicago, IL

Full-time

Hybrid

Senior Level, Lead/Staff

$137K/yr - $179K/yr

7+ years exp

United Airlines is seeking a Principal DDI Engineer to join their Digital Technology team, which focuses on building cutting-edge technology solutions for the airline industry. The role involves designing and enhancing hybrid DNS/DHCP/IPAM infrastructure, automating workflows, and troubleshooting complex issues to ensure operational excellence.

HospitalityIn-Flight EntertainmentService IndustryTransportationTravel

No H1B

Responsibilities

Stay abreast of industry knowledge of DDI technologies (Infoblox, BlueCat etc.) and manage hybrid DNS architectures across on-prem, AWS Route53, and Azure DNS to ensure seamless name resolutions and zone delegation

Automates DNS/DHCP/IPAM workflows using Ansible, Python, and APIs; implements CI/CD pipelines, monitoring solutions, and automated zone-sync validation and compliance enforcement

Troubleshoots complex DNS/DHCP/IPAM issues, conducts detailed RCAs, provides permanent corrective fixes, and leads Priority 1 incident and network-outage investigations

Establishes and maintains technical standards, reviews security releases and CVEs, provides mitigation guidance, and certifies hardware platforms and code versions

Maintains comprehensive documentation, runbooks, and procedural materials to support operational excellence and global team knowledge continuity

Interfaces with Cloud, Network, Security teams, other technology towers, and vendors to design resilient hybrid DDI solutions and ensure alignment across internal and external partners

Acts as the Network SME on initiatives, collaborates on scopes of work (including budgets), partners with business teams, and participates in long-term technology strategy and direction

Qualification

DDI engineeringDNS operationsDHCP operationsIPAM managementAWS Route53Azure DNSAnsiblePython scriptingAgile methodologiesPerl scriptingShell scriptingIncident managementProblem managementTechnical documentationCollaboration

Required

Bachelor's degree in Engineering, Computer Science, Information Technology or related field

7+ years of experience relevant work experience

4+ years of experience in DDI engineering and operations

4+ years of experience in DNS/ DHCP/ IPAM operations, Incidents and problem management

Experience in DDI engineering and operations with strong hands-on knowledge in designing, deploying, maintaining and managing large scale environments

Strong understanding of DNS protocols, DHCP lease management, and IPAM hierarchy

Experience in installing, configuring, and troubleshooting of DDI appliance technologies from industry leading vendors (Infoblox, Bluecat)

Experience in Agile methodologies, daily stand-up meetings, sprint planning sessions and user story preparations

Extensive knowledge in Perl, Shell, and Python scripting is desired to automate Network Task and Improve operational efficiency

Must be legally authorized to work in the United States for any employer without sponsorship

Successful completion of interview required to meet job qualification

Reliable, punctual attendance is an essential function of the position