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If this sounds like the choice you want to make, then choose MITRE—and make a difference with us. Division Summary: MITRE’s Nuclear Enterprise Programs Division has an excellent opportunity supporting the modernization of our nation’s strategic deterrence through continuous improvement of our sponsors software development capabilities and system architecture. Our work focuses on nuclear deterrence and the technical capabilities of the mission systems. Be part of a dynamic technical team having substantial impact on the design and development of next generation DoD systems. Job Description: We are seeking a skilled and experienced professional to join our team as a Senior Software Systems Engineer. The successful candidate will be responsible for: + Leading the development of an automated testing program that includes automated integration tests, automated functional tests, and automated API tests. + Contributing to the development of Digital Engineering models that will drive the evolution of a software intensive system. + Working directly with end users to understand their mission needs. + Collaborating with customers and sponsors to develop and manage Program-level Product Backlog. + Working directly with software development teams to turn Product Backlogs into working software. + Recommends software upgrades and migration strategies for customers’ existing programs and systems. + Designs each piece of an application or system and plans how the pieces will work together. + Creates a variety of models and diagrams (such as flowcharts) to inform software system development. + Ensures that a program continues to function normally through software maintenance and testing. + Document every aspect of an application or system as a reference for future maintenance and upgrades. + Works across sponsor domains and collaborates as part of an interdisciplinary team to create solutions and implementation strategies to improve quality and accelerate delivery of software systems to the field, including prototyping, research, software process, modeling and simulation, technical design, requirements. + Learns new tools, techniques, and practices to stay abreast of the ever evolving technical landscape. Basic Qualifications: + Typically requires a minimum of 5 years of related experience with a Bachelor’s degree; or 3 years and a Master’s degree; or a PhD with relevant experience who can immediately contribute at this job step; or equivalent combination of related education and work experience. + Bachelor's degree in Computer Science, Software Engineering, or a related field. + At least 5 years experience in a similar role in the tech industry. + Active Secret clearance with the ability to obtain and maintain a TS/SCI clearance. + Proven experience in developing automated testing systems. + Proficiency in programming languages such as Java, Python, or C#. + Strong knowledge of automated testing frameworks like Selenium, TestNG, or JUnit. + Experience with API testing tools such as Postman or SoapUI. + Familiarity with Continuous Integration/Continuous Deployment (CI/CD) practices. + Understanding of software QA methodologies, tools, and processes. + Experience in developing Digital Engineering models. + Knowledge of system architecture and software development lifecycle. + Strong problem-solving skills and attention to detail. + Excellent communication and teamwork skills. Preferred Qualifications: + Experience with performance and/or security testing. + Familiarity with cloud platforms like AWS, Google Cloud, or Azure. + Experience with containerization technologies like Docker or Kubernetes. + Knowledge of Behavior-Driven Development (BDD) or Test-Driven Development (TDD). + Proficiency in using project management tools like Jira or Trello. + Experience with version control systems like Git. + Understanding of Agile/Scrum development principles. This requisition requires the candidate to have a minimum of the following clearance(s): Secret This requisition requires the hired candidate to have or obtain, within one year from the date of hire, the following clearance(s): Top Secret/SCI Work Location Type: Onsite MITRE is proud to be an equal opportunity employer. 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