We are seeking a Senior Network Firewall Engineer to join our dynamic and agile team in Manassas, VA. This role requires 2+ days onsite per week and willingness to perform weekend deployment activities and be on-call on a rotational basis (estimated one Saturday out of four weekends). The successful candidate will be fully responsible for the design, optimization, deployment, and support of Network Firewalls and security aspects within an Agile/DevOps environment. This is a mission-critical role