Network Engineer Sr - Public Trust

Network Engineer Sr — Remote (U.S.)
Dunhill Government Solutions is hiring a Senior Network Engineer to support a newly awarded federal program delivering enterprise identity and directory services. This is a full-time, fully remote role designing and sustaining the secure, highly available network that carries authentication, authorization and directory replication across distributed data centers and cloud environments.
Responsibilities:
Design and implement resilient Layer 2 and Layer 3 architectures — IP addressing, VLANs, routing domains, dynamic routing protocols, route filtering, redundancy and WAN/data-center connectivity.
Configure, maintain and troubleshoot enterprise routers, switches, next-generation firewalls, load balancers and application delivery controllers carrying authentication, directory-service and user-access traffic.
Analyze network dependencies behind directory sites, replication paths, DNS, Kerberos, LDAP/LDAPS and Global Catalog access to isolate latency, packet loss, asymmetric routing, MTU, firewall-policy and name-resolution problems.
Implement Zero Trust-aligned controls: segmentation, least-privilege access policies, identity-aware access patterns, secure management planes and controlled east-west traffic.
Develop and maintain firewall rules, security zones, access-control lists, IDS/IPS integrations and logging requirements that protect identity infrastructure without interrupting authorized traffic.
Establish performance, availability and capacity monitoring on critical paths using telemetry, flow data, packet analysis, SNMP, syslog and alert thresholds, and turn findings into remediation and scaling actions.
Engineer high-availability and disaster-recovery connectivity through redundant paths, failover design, routing-convergence testing, recovery validation and documented procedures.
Build repeatable provisioning, configuration validation and compliance checks using infrastructure-as-code, APIs, templates, source control and configuration management tooling.
Produce diagrams, technical standards, implementation plans, change records and troubleshooting runbooks, and mentor junior engineers on secure design and structured fault isolation.
Requirements:
U.S. citizenship, and the ability to obtain and maintain a Public Trust (Tier 1 / NACI) background investigation.
Bachelor’s degree in computer science, information technology or a related field, or equivalent relevant experience.
At least 4 years of professional network engineering and design experience supporting enterprise-scale, highly available infrastructure.
Strong hands-on experience designing, configuring and troubleshooting enterprise routing and switching — Layer 2 and Layer 3 concepts, VLANs, routing protocols, route filtering and redundancy.
Experience with network security technologies: next-generation firewalls, access-control lists, segmentation, intrusion detection and prevention, and secure administrative access.
Experience troubleshooting complex connectivity and performance issues using packet analysis, telemetry, flow data, SNMP, syslog and monitoring tools.
Working knowledge of load balancers and application delivery controllers supporting highly available application and identity-service traffic.
Preferred: Cisco CCNP Enterprise, CCNP Security or a comparable senior networking certification. Not holding one today does not stop you applying.
Fully remote, day shift. Travel is not required.
Compensation: $100,000 to $117,000 per year, full time, 40 hours per week.
Dunhill Government Solutions has placed cleared and public-trust professionals across the federal government for more than 25 years. AI-Powered. Human-Delivered.™
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