Network Engineer

About The Company
MANTECH is a leading provider of advanced technology solutions dedicated to delivering innovative and reliable services to government and commercial clients. With a focus on cybersecurity, enterprise IT, and network engineering, MANTECH has established a reputation for excellence in supporting mission-critical operations. The company fosters a collaborative environment that encourages professional growth, technical innovation, and a commitment to excellence. MANTECH's core values emphasize integrity, customer focus, and operational excellence, making it an ideal place for motivated professionals to advance their careers.
About The Role
We are seeking a motivated, career and customer-oriented Network Engineer to join our dynamic team in Chantilly, VA. This is an onsite position that offers an exciting opportunity to work on complex network infrastructure projects supporting critical government and enterprise systems. The successful candidate will be responsible for providing Tier II and Tier III network engineering support, designing advanced WAN, LAN, and data center solutions, and ensuring the seamless operation of our clients' network environments. You will collaborate with internal teams, stakeholders, and sponsor authorities to drive infrastructure initiatives, optimize network performance, and implement best practices in network security and management. This role requires a highly skilled professional with a strong technical background, excellent problem-solving abilities, and the ability to operate effectively in a fast-paced environment.
Qualifications
High School Diploma or GED with 7+ years of progressively responsible experience in Network Engineering, Network Analysis, or a related technical discipline
Cisco Certified Network Associate (CCNA) certification, or equivalent routing/switching technical certification, e.g., Juniper Networks Certified Associate - Junos (JNCIA-Junos)
DoD 8570 IAT Level II Certification, e.g., Security+
DoD 8570.1 / DoD 8140.01 (IAT III Level) certification required within 6 months of hire, e.g., SecurityX
Responsibilities
Perform Tier II and Tier III network engineering support, while designing advanced WAN, LAN, and data center solutions
Monitor and configure networks utilizing SolarWinds, Cisco DNAC, and Cisco ISE to analyze complex network requirements and ensure complete, functioning infrastructure
Create, maintain, and interpret highly detailed technical network diagrams, routing topology schemas, and robust hardware configuration baselines
Coordinate across large internal teams, stakeholders, and Sponsor authorities to drive infrastructure agendas and successfully navigate systems engineering processes
Participate in all phases of the ITIL Service Lifecycle, including submitting Change Requests and maintaining security event monitoring policies
Evaluate current network architectures, inventory complex routing pathways, and recommend process improvements to optimize performance and throughput
Deliver end-to-end functional analysis, requirements specification, cost estimation, and engineering package releases for customer production IT environments
Benefits
Competitive salary package
Comprehensive health, dental, and vision insurance plans
Retirement savings plans with company matching
Paid time off and holidays
Professional development opportunities and training programs
Collaborative and inclusive work environment
Equal Opportunity
MANTECH is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or veteran status.

Work arrangement
Yes