ManTech is seeking a motivated, career and customer-oriented Enterprise Systems Engineer to join our team in McLean, VA.Responsibilities include but are not limited to:Develop complex, enterprise solutions across the appropriate engineering environments to meet business and mission requirements or enhance performancePlan, conduct, and oversee the technical aspects of large, complex projects; coordinate the efforts of technical support staff in the performance of assigned projectsPerform full-stack software engineering development using Agile methodologiesDevelop and execute business process analysis, reengineering and digital transformation that adapt to user needs and requirements and meet business goalsOversee the day-to-day operation of Tier 1 - 3 support as needed (troubleshooting, problem resolution support, and Root Cause Analysis (RCA)Develop and apply advanced methods, theories and research techniques in the investigation and solution of highly complex system requirements and problemsProvide complex technical consultation on current and proposed systems to other organizations and clientsEnhance web-based applications to maximize User Experience (UX) and accessibility standardsBasic Qualifications:Bachelor’s Degree in a technical field (Science, Technology, Engineering, and Mathematics (STEM))7+ years serving as an Engineering Lead or similar work leading high performing teamsExperience in maintaining compliance with Natural Industrial Security Program Operating Manual (NISPOM) requirements and Intelligence Community Directives (ICDs)Familiarity with virtualizing servers, storage, networks, desktop and applications to improve efficiency, security and scalabilityFamiliarity with access control models and network securitySolid understanding of server operating systems (Linux, Windows)In-depth understanding of communication protocols and routing protocolsPreferred Qualifications:Advanced degrees and certifications are desired (e.g. - MCSE, CCNP, or CISSP)Experience supporting configuration management in a multi-region environmentExperience building PaaS or internal cloudAdvanced experience in systems integration, the ability to write integration code for ServiceNowClearance Requirements:Must have a current/active TS/SCI w/ polygraph.Physical Requirements:The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.