The Security System Engineer will work with the core systems security and LibertyWorks teams to determine the technologies and processes needed to meet customer requirements for system security and resiliency. The role applies secure cyber resilient engineering (SCRE) technical knowledge throughout the product lifecycle, including requirements, design, build, test, production, operations, and support. The engineer will collaborate with government stakeholders, customers, suppliers, and industry experts to understand and meet system requirements; create digital models using tools such as model-based systems engineering (MBSE); and develop and update systems security and resilience good practices, including techniques, policies, procedures, and knowledge that can be applied across the business. The role is a six-month contract with a good likelihood of extension depending on performance. It follows a hybrid schedule of two to three days per week in the office in Indianapolis, Indiana.