Developing front end website architecture. Designing user interactions on web pages. Developing back-end website applications. Ensuring responsiveness of applications. Working alongside graphic designers for web design features. Designing and developing APIs. Staying abreast of developments in web applications and programming languages. Evaluation of COTS products that may contribute to the end product Communicate effectively and clearly present technical approaches and findings. Develop technical solutions to complex problems which require the regular use of ingenuity and creativity. Perform work without appreciable direction. Life Insurance Employee Assistance Programs & Work/Life Solutions Paid Time Off Health & Wellness Resources Employee Discounts This position's standard work schedule is a 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off. This role may offer a competitive relocation assistance package. Sr. Principal Software Engineer: 8 Years with Bachelor's in related field of study, 6 Years with Masters, 4 Years with PhD or 4 additional years in lieu of a degree. US Citizenship with Active DoD Secret clearance with a reinvestigation date occurring in the last 6 years. Ability to obtain Special Program Access (SAP). Ability to team plan, execute, and manage the technical scope, and support leadership planning. Experience with Agile and working in a cross-function Scrum team. Working knowledge of Object-Oriented Analysis and Design principles Familiarity with Full Stack application development including API design Familiarity with Model-Based Systems Engineering languages (SysML/UML) and concepts Experience with UI design and development, or experience Interpreting complex algorithms and requirements for implementation Bachelor's degree or higher in Science, Technology, Engineering, and Mathematics (STEM) Experience with the Atlassian Tool Suite including Jira and Confluence Proficient with DOORS, Cameo with the ability to write and decompose system requirements Ability to evaluate risks and tradeoffs and present solution options to management Experience as a Scrum Master or Product Owner within an Agile development process. Experience using Atlassian tools to track agile backlog. Experience generating and delivering documents (CDRLs) for government use. Understanding of MBSE modeling tools, such as Cameo or a similar product Experience performing trade studies of COTS products for use in the delivered system Sentinelsoftware Primary Level Salary Range: $124,900.00 - $206,000.00 The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business. The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates. Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.