The selected candidate will become a Principal/Sr. Principal Civil/Structural Design Engineer on the Infrastructure Design Team (INF). This role supports the design, modeling, and integration efforts for Civil/Structural elements for Sentinel Launch Facilities, Launch Centers, or Test Facilities. Responsible for overseeing and coordinating civil/structural systems design for the Sentinel infrastructure and facilities. Subject matter expert supporting the design of high complexity civil/structural systems, including structural steel design drawings, concrete forming and reinforcing design drawings. Review structural design/selection/engineering for modularized fabrication. Interpret and verify industry standards, guidelines, and codes for project deliverables. Participate in project design/model reviews. Review subcontractors design product quality/accuracy by reviewing civil/structural designs and validating that current standards are applied and integrated into the design solution. Support the delivery of Civil/Structural facility design Technical Data Packages, Issue-for-Construction (IFC) packages, as-built TDPs, PDPs, interface models, and additional design artifacts. Supporting structured trade studies to evaluate alternative design solutions to resolve technical issues Developing and presenting design change requests, coordinating with impacted internal and external stakeholders, and ensuring configuration control of the technical baseline. Identifying risks and opportunities associated with or driven by design factors and executing handling/mitigation/capture actions to reduce risk or realize opportunities. Developing and maturing Civil/Structural facility designs that meet Weapon System requirements, UFC, MIL-STD, and other applicable codes and regulations. This position may be filled at either a Principal or Senior Principal level. Principal Design Engineer:

Bachelor's degree in Science, Technology, Engineering or Math (STEM) with 5 years' experience; 3 years' experience with a Master's degree; or 1 year' experience with a PhD. Sr. Principal Design Engineer:

Bachelor's degree in Science, Technology, Engineering or Math (STEM) with 8 years' experience; 6 years' experience with a Master's degree; or 4 years' experience with a PhD. Experience with Finite Element Analysis and Modeling (ANSYS, GTStrudl, ABAQUS, STAAD). Experience with Microsoft (MS) Word, Excel, Power Point, and Engineering Scheduling tools and applications, and be able to use the Internet as an information gathering and communications tool. Professional Engineering (PE) or Structural Engineering (SE) License with any state Excellent interpersonal, written communication, and presentation skills, including the ability to clearly and succinctly communicate complex concepts to both Government and corporate leadership Proficiency with Revit, Siemens NX and Teamcenter Active DoD Secret security clearance with the most recent investigation completed in the last 5 years. Must be able to work independently, function in a dynamic environment, and be flexible to changing direction