Senior Juniper Network Engineer Job at Robert Half (Lorton)

Job Description

A government IT program is seeking a Senior Juniper Network Engineer to provide expert-level engineering, operations, and maintenance support for mission‑critical field communications systems used worldwide. This program delivers a wide range of IT applications and infrastructure services, including enterprise network support, service desk, workstation engineering, telecommunications engineering, mobility services, and more. This role supports a high‑visibility customer environment and requires someone who can operate independently, communicate effectively with technical and non-technical stakeholders, and manage complex network systems with a high degree of accuracy and professionalism.

Job Responsibility

Serve as the primary Subject Matter Expert (SME) for a specialized government system, becoming the single point of technical authority for network-related issues
Provide independent operations & maintenance (O&M) support for mission‑critical systems, requiring broad and deep knowledge across applicable network technologies
Configure and support Juniper SRX‑series security devices (JNCIP‑SEC or JNCIE‑SEC level proficiency), ensuring alignment with industry best practices and federal security standards
Configure and support Juniper EX‑series switches using 1Gbps and 10Gbps backplanes, including copper and fiber connectivity and high‑availability (HA) solutions
Configure and support Cisco Firepower ASA firewalls, including AnyConnect VPN access, HA configurations, secure authentication integrations, and remote-access security
Design and maintain an out‑of‑band (OOB) management network using TrippLite serial consoles, iDRAC, and similar technologies
Collaborate with customers, contractors, and vendors on the design and specification of Private IP (PIP) and Internet circuits
Ensure high availability of Network Time Protocol (NTP) across all networks
Follow established configuration management processes to maintain consistency, security, and accuracy in network configurations
Develop and maintain technical documentation, network diagrams, and system references
Provide clear communication and briefings to customers, including senior leadership

Requirements

Bachelor’s degree with 12+ years of experience, OR a Master’s degree with 10+ years of experience
High school diploma with 4+ years of additional relevant experience may be considered
Ability to obtain and maintain a Government Public Trust security clearance
Proven Subject Matter Expert in Juniper network infrastructure
Extensive experience providing O&M support to complex, mission‑critical systems
Strong background in network design, implementation, configuration, and troubleshooting
Demonstrated ability to work independently and collaboratively to resolve complex technical issues
Ability to effectively engage with users, customers, and stakeholders to diagnose and resolve issues
Strong briefing, communication, and customer‑facing skills
Hands-on experience with: Juniper SRX-series branch routers
Juniper EX-series switches
Cisco Firepower ASA firewalls
AnyConnect VPN clients
TrippLite serial consoles
Ethernet & TDMA-delivered Private IP & Internet circuits
Private APN cellular networks
Network Time Protocol (NTP)
Information security best practices & FISMA-aligned processes
Configuration management
Strong interpersonal skills and ability to work effectively with teams and customers

Nice to have

Security engineering experience
Experience participating in the ATO (Authorization to Operate) process
Business analysis or requirements development experience
Technical writing and documentation experience
Prior government contracting experience
Experience supporting environments requiring federal clearances

What we offer

medical, vision, dental, and life and disability insurance
eligible to enroll in our company 401(k) plan

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