Senior Infoblox DDI Engineer

P W Communications Inc•Fort Meade, MD

3d•$102,000 - $108,000•Hybrid

About The Position

PW Communications is seeking a Senior Infoblox DDI Engineer to support the Defense Information Systems Agency (DISA) Defense Enclave Services (DES) contract. The DES team develops and deploys operational capabilities in an integrated, modernized enterprise environment as part of a modernization program supporting DISA and Fourth Estate Agencies. The role is based in Fort Meade, Maryland, and follows a hybrid schedule of four days in the office and one remote day per week. It requires U.S. citizenship and an active Secret security clearance. The engineer will design, implement, migrate, and sustain enterprise DNS, DHCP, and IP address management (DDI) services for large-scale network operations. The position provides hands-on technical leadership for Infoblox grid infrastructure and associated network services, including architecture, migrations, troubleshooting, testing, security hardening, and production implementation. Strong routing and switching expertise is required to support DDI reachability, DHCP relay, segmentation, routing, and high availability. The engineer will work under general direction, exercise independent technical judgment, resolve complex engineering problems, contribute to significant project milestones, and communicate technical recommendations, risks, and status to engineering leadership, peers, and stakeholders.

Requirements

Bachelor’s degree with 8 or more years of relevant experience, or a master’s degree with 6 or more years of relevant experience; additional relevant experience, education, and training may be considered in lieu of a degree.
U.S. citizenship and an active DoD Secret clearance.
Current DoD IAT Level II certification or higher, such as Security+ CE.
Significant hands-on experience engineering, implementing, and troubleshooting enterprise network infrastructure supporting DDI services, including TCP/IP, VLANs, routing, DHCP relay, high availability, and service reachability.
Working knowledge of enterprise routing protocols, including BGP and OSPF; EIGRP experience is desirable.
Strong working knowledge of DNS and DHCP, including resolution, zone management, scope and range design, DHCP options, relay, failover, lease management, and troubleshooting.
Strong understanding of IPAM principles and practices, including address-space planning, allocation standards, utilization management, and data integrity.
Demonstrated experience performing enterprise-scale DNS and DHCP migrations, including discovery, data analysis, source validation, migration planning, cutover execution, rollback planning, and post-migration verification.
Experience migrating DNS and DHCP services from legacy platforms, including Microsoft DNS/DHCP, to Infoblox or equivalent enterprise DDI platforms.
Hands-on experience with Infoblox Grid architecture, including Grid Masters, Grid Master Candidates, Grid Members, high-availability pairs, delegated administration, and distributed DDI service delivery.
Experience troubleshooting complex DNS resolution and DHCP address-assignment issues using packet captures, DNS query analysis, DHCP transaction analysis, logs, and network telemetry.
Experience with DNS architecture and operations, including forward and reverse zones, AXFR/IXFR zone transfers, primary/secondary relationships, delegation, forwarding, recursion, conditional forwarding, and DNSSEC.
Experience configuring and troubleshooting DHCP relay across routed, segmented, and multi-VRF network environments.
Experience validating DNS and DHCP data before migration, including records, scopes, reservations, exclusions, leases, options, stale records, and duplicate or conflicting data.
Experience developing migration runbooks, implementation plans, test procedures, validation criteria, and rollback procedures, and executing DNS/DHCP cutovers during approved production maintenance windows.
Experience performing post-migration validation of DDI services, including forward and reverse DNS resolution, DHCP allocation, relay operation, failover, client connectivity, and service availability.
Experience supporting DDI services across multiple network enclaves, security zones, geographically distributed sites, or other complex enterprise network environments.
Experience with DNS/DHCP monitoring, alerting, capacity management, availability management, and operational health reporting.
Experience maintaining configuration baselines and as-built documentation for DNS, DHCP, IPAM, and Infoblox infrastructure.
Ability to identify and resolve dependencies among DNS, DHCP, IPAM, Active Directory, routing and switching, applications, identity services, and security controls.
Ability to analyze, reconcile, and remediate inaccurate or inconsistent DDI data and establish standards for DNS, DHCP, and IPAM data quality.
Experience developing and executing technical test plans with documented success criteria, validation evidence, defect tracking, remediation, and operational acceptance.
Experience supporting formal change-management processes, including change requests, implementation plans, maintenance windows, validation evidence, backout procedures, and post-change documentation.
Demonstrated troubleshooting experience using packet capture and protocol-analysis tools across multi-vendor enterprise environments.
Hands-on experience with Infoblox and one or more enterprise networking technologies or platforms, such as Cisco, Aruba, Palo Alto, Dell, or Brocade.
Experience applying cybersecurity hardening, vulnerability remediation, configuration baselines, and applicable DoD security requirements to DDI and supporting network infrastructure.
Strong written and verbal communication skills, including experience developing technical designs, implementation procedures, network diagrams, migration documentation, and operational procedures using Visio, PowerPoint, or similar tools.

Nice To Haves

EIGRP experience.
Experience with IPv6 addressing, DNS, and DHCPv6 in enterprise dual-stack or IPv6 migration environments.
Experience automating Infoblox provisioning and DDI data management using WAPI, REST APIs, Python, Ansible, or equivalent technologies.
Experience integrating Infoblox with Active Directory, PKI, NAC, identity services, configuration-management platforms, monitoring systems, and automation workflows.
Infoblox certification, such as Infoblox Core DDI or equivalent, and CCNP Enterprise or equivalent.
Experience with large-scale DNS/DHCP migrations, consolidations, or transitions from Microsoft DNS/DHCP to Infoblox.
Experience with Infoblox API, WAPI automation, or Python or Ansible scripting for DDI provisioning and data hygiene.
Experience with anycast DNS delivery and distributed service architectures.
Experience integrating DDI with network access control, identity-based networking, and segmentation efforts.
Experience with IPv6 addressing, DNS, and DHCPv6 in enterprise environments.
Experience integrating enterprise networking and DDI with cloud infrastructure and hybrid connectivity.
Experience applying DISA STIGs, vulnerability remediation, and configuration hardening.
Experience with Jira, Confluence, or similar project and knowledge-management tools.
Additional listed IAT Level II certifications: CASP+ CE, CCNA-Security, CCNP Security, CCSP, CISA, CISSP or Associate, CND, CySA+, GCED, GCIH, GICSP, GSEC, Security+ CE, or SSCP.

Responsibilities

Engineer, deploy, configure, and sustain Infoblox grid infrastructure, including grid masters, grid master candidates, members, high-availability pairs, and distributed appliances across sites and enclaves.
Design and maintain enterprise DNS architecture, including authoritative and recursive services, forward and reverse zones, delegation, conditional forwarding, split-horizon views, zone transfers, and DNSSEC.
Engineer and maintain enterprise DHCP services, including scope and range design, failover and redundancy, reservations, option configuration, relay behavior, and lease management.
Design and maintain IPAM structure, including network containers, address allocation, utilization reporting, extensible attributes, and enterprise data hygiene.
Perform Infoblox grid upgrades, patching, backup and restore, capacity planning, licensing, and lifecycle management.
Integrate Infoblox with Active Directory, network access control, automation platforms, and provisioning workflows through APIs and supported integrations.
Implement approved DNS security capabilities, including response policy zones, query filtering and logging, and threat-intelligence-driven blocking.
Engineer, configure, and implement routing and switching infrastructure supporting DDI services, including routing policy, VLAN architecture, DHCP relay paths, anycast service delivery, and high-availability designs.
Configure and troubleshoot BGP, OSPF, and EIGRP routing, including redistribution, filtering, and convergence behavior affecting DDI reachability.
Install, modify, configure, test, and service network equipment, including hardware refreshes and software upgrades.
Troubleshoot complex connectivity, name-resolution, and address-assignment issues across client, network, and service layers.
Develop implementation plans, test and validation steps, rollback procedures, and change documentation for DDI and network changes, and execute them during approved change windows.
Support DNS and DHCP migrations, consolidations, and namespace cleanup, including data validation and cutover sequencing.
Apply configuration hardening, STIG requirements, and vulnerability remediation to DDI appliances and network devices.
Maintain DDI architecture diagrams, namespace and address plans, zone and scope documentation, integration designs, backup and recovery procedures, troubleshooting guides, standard operating procedures, and as-built documentation.