• Network Engineer IV

    Robert Half Technology (Washington, DC)


    Description

    Senior Network Engineer

     

    Clearance Requirements: Candidate must currently hold Public Trust (DOJ Preferred)

     

    Employment Type: Contract - 26 weeks

    Overview

    A federal program supporting the U.S. Department of Justice (DOJ) Antitrust Division is seeking an experienced Senior Network Engineer to lead the design, configuration, monitoring, and optimization of a complex enterprise network infrastructure. This role requires deep expertise in advanced networking technologies, strong experience with monitoring and management platforms, and the ability to ensure secure, high‑performance network operations in a mission‑critical environment.

     

    The ideal candidate is proactive, highly technical, and well‑versed in tools such as Nagios, Cisco Prime, Cisco Identity Services Engine (ISE), and Splunk.

    Key Responsibilities

    + Lead the design, configuration, and maintenance of enterprise‑level network environments to ensure reliability, scalability, and security.

    + Configure and administer Cisco routers, switches, and firewalls in alignment with organizational requirements and industry best practices.

    + Implement and support advanced network protocols including OSPF, BGP, VLANs, QoS, and IPSec.

    + Utilize Nagios to monitor network device health, performance trends, and service availability.

    + Develop proactive monitoring strategies to detect anomalies and reduce operational downtime.

    + Troubleshoot network incidents and provide timely resolution to minimize service disruptions.

    + Use Cisco Prime Infrastructure for network configuration, performance monitoring, and inventory management.

    + Automate network provisioning, monitoring, and configuration tasks to enhance efficiency.

    + Configure and manage Cisco ISE to enforce network access control policies across wired and wireless environments.

    + Integrate Cisco ISE with other security tools to support centralized authentication, authorization, and accounting (AAA).

    + Develop and refine Splunk dashboards, alerts, and reports for network performance, security events, and incident response.

    + Maintain detailed documentation of network configurations, processes, troubleshooting guides, and incident resolutions.

    + Identify opportunities for network optimization and implement solutions that improve performance and scalability.

    + Automate routine tasks such as backups and performance checks using scripting tools.

    Requirements

    Qualifications

    + Bachelor’s degree in Computer Science, Information Technology, Network Engineering, or related discipline (or equivalent experience/certifications).

    + 5+ years of hands‑on experience supporting large‑scale enterprise networks.

    + Strong expertise with Nagios for monitoring and performance analysis.

    + Advanced experience using Cisco Prime for network management and automation.

    + In-depth proficiency with Cisco ISE for access control and network security.

    + Experience using Splunk for log management, analysis, and dashboard development.

    + Advanced knowledge of networking protocols such as OSPF, BGP, MPLS, VLANs, QoS, and IPSec.

    + Hands-on experience with Cisco routers, switches, and firewalls.

    + Strong understanding of network security practices including ACLs, VPNs, IDS/IPS, and related technologies.

    + Proficiency with scripting languages such as Python or Bash for automation.

    + Excellent analytical, troubleshooting, and problem‑solving skills.

    + Effective written and verbal communication skills.

    + Ability to support and mentor junior network engineering staff.

    •Desirable Skills

    + Experience with cloud networking and hybrid integrations involving AWS, Azure, or Google Cloud.

    + Familiarity with SD‑WAN technologies and network automation tools (e.g., Ansible, Terraform).

    + Understanding of ITIL or other IT service management frameworks.

     

    Certifications (Preferred)

     

    + Cisco Certified Network Professional (CCNP) or higher.

    + Cisco Certified Internetwork Expert (CCIE) highly desirable.

    + Additional certifications such as Network+, security‑focused certifications, or Splunk Certified Admin are a plus.

     

    Technology Doesn't Change the World, People Do.®

     

    Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

     

    Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more.

     

    All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

     

    • 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) .