Software Engineer (Senior) - TS/SCI with Polygraph Required

Job Description: Position SummarySenior Software Engineers lead the design, development, and delivery of complex software systems in support of the customer's requirements. Senior Software Engineers take ownership of significant portions of the software development lifecycle — from requirements analysis and design through coding, integration, and testing — while operating within Agile development teams. Senior Software Engineers apply sound engineering judgment to resolve difficult technical problems, evaluate design trade-offs, and help ensure delivered systems meet performance, security, and reliability standards. Senior Software Engineers are expected to review the work of less experienced engineers and provide technical mentorshipRequirementsUS Citizenship and TS/SCI with Polygraph (no exceptions) Education/Experience Requirements: Bachelor's degree and 7-11 years of relevant professional software engineering experience (Master's degree and 5-9 years also acceptable); additional relevant experience may be considered in lieu of a degreeRequired Skills: Strong proficiency in one or more modern programming languages (e.g., Java, Python, C/C++, JavaScript) Demonstrated experience across the full software development lifecycle (SDLC), including requirements analysis, design, coding, integration, testing, and deploymentExperience working within Agile/Scrum development teams and ceremoniesExperience with version control and configuration management toolsExperience developing on Windows and/or Linux operating systemsExperience with DevOps practices, CI/CD pipelines, and test automationDemonstrated ability to evaluate software architecture and technical trade-offsStrong critical thinking, technical writing, and oral communication skills, including the ability to present technical solutions to customersSenior positions review and guide the work of Junior and Mid-Level engineers