Principal Software Engineer

MTSI is seeking a Senior Software Engineer to play a critical role in the transformation of a legacy Tomcat web application into a modern, containerized microservices architecture. This highly visible and mission-critical role will involve maintaining and transitioning the existing Tomcat-based system while simultaneously redesigning core services to leverage emerging enterprise services and implement a new architecture using Golang and Angular.Job Description:Maintain and enhance a legacy Tomcat web application while planning its transition to a cloud-native architecture.Redesign the application for deployment within a Kubernetes cluster to ensure scalability, reliability, and security.Refactor traditional monolithic structures into modular microservices using modern integration strategies and emerging enterprise services.Collaborate with cross-functional engineering teams to ensure smooth integration of new services following industry best practices.Develop and maintain software components using Java (Java 8 and Java 21), utilizing technologies such as JSP, JSTL, CDI, and Spring alongside a responsive user interface that leverages Bootstrap, CSS, SCSS, JavaScript, and JQuery.Implement new architecture by leveraging Golang-based services and Angular for a modernized front-end experience.Document technical designs, system integration requirements, and transition processes in support of ongoing and future initiatives.Responsibilities:Take ownership of large sections of the system architecture while working collaboratively with teams.Drive agile development practices and support robust continuous integration/continuous delivery (CI/CD) pipelines.Clearly articulate complex system designs and technical concepts to both technical and non-technical stakeholders.Oversee the evolution of the software process from development through deployment, ensuring efficient and secure code integration.Engage in continuous process improvement to enhance software quality, performance, and reliability.Required Qualifications:Bachelor's degree in Computer Science, Software Engineering, or a related technical field.5+ years of hands-on software engineering experience.Proficiency in Java development (Java 8 and Java 21) with expertise in JSP, JSTL, CDI, and Spring frameworks.Proven experience in maintaining and modernizing web applications, particularly within Tomcat and Kubernetes environments.Solid expertise in modern front-end technologies, including Angular, Bootstrap (versions 4 and 5), CSS, SCSS, JavaScript, and JQuery.Experience in refactoring monolithic applications into microservices and integrating emerging enterprise services.Familiarity with container orchestration and deployment best practices.Strong problem-solving skills and excellent written and verbal communication abilities.U.S. Citizenship and must possess an active TS/SCI security clearance or a TS clearance with SCI eligibility.#LI-BG1#MTSIInteresting Work:Our co-workers support some of the most important and critical programs to our national defense and security.Values:Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.100% Employee Owned:We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.Great Benefits - Most Full-Time Staff Are Eligible for:Starting PTO accrual of 20 days PTO/year + 10 holidays/yearFlexible schedules6% 401k match with immediate vesting up to $9k annually

Created: 2026-03-07