{"schemaVersion":"jobsearcher.job.v1","id":"e56846ba6aa401459fa6df6e","url":"https://jobsearcher.com/jobs/e56846ba6aa401459fa6df6e","canonicalUrl":"https://jobsearcher.com/jobs/e56846ba6aa401459fa6df6e","title":"Software Engineer","description":"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.\nJob Description:\nMaintain and enhance a legacy Tomcat web application while planning its transition to a cloud-native architecture.\nRedesign the application for deployment within a Kubernetes cluster to ensure scalability, reliability, and security.\nRefactor traditional monolithic structures into modular microservices using modern integration strategies and emerging enterprise services.\nCollaborate with cross-functional engineering teams to ensure smooth integration of new services following industry best practices.\nDevelop 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.\nImplement new architecture by leveraging Golang-based services and Angular for a modernized front-end experience.\nDocument technical designs, system integration requirements, and transition processes in support of ongoing and future initiatives.\nResponsibilities:\nTake ownership of large sections of the system architecture while working collaboratively with teams.\nDrive agile development practices and support robust continuous integration/continuous delivery (CI/CD) pipelines.\nClearly articulate complex system designs and technical concepts to both technical and non-technical stakeholders.\nOversee the evolution of the software process from development through deployment, ensuring efficient and secure code integration.\nEngage in continuous process improvement to enhance software quality, performance, and reliability.\nRequired Qualifications:\nBachelor’s degree in Computer Science, Software Engineering, or a related technical field.\n5+ years of hands-on software engineering experience.\nProficiency in Java development (Java 8 and Java 21) with expertise in JSP, JSTL, CDI, and Spring frameworks.\nProven experience in maintaining and modernizing web applications, particularly within Tomcat and Kubernetes environments.\nSolid expertise in modern front-end technologies, including Angular, Bootstrap (versions 4 and 5), CSS, SCSS, JavaScript, and JQuery.\nExperience in refactoring monolithic applications into microservices and integrating emerging enterprise services.\nFamiliarity with container orchestration and deployment best practices.\nStrong problem-solving skills and excellent written and verbal communication abilities.\nU.S. Citizenship and must possess an active TS/SCI security clearance or a TS clearance with SCI eligibility.\n\n#LI-BG1\n#MTSI\n\nPerks and Benefits\nVacation:\nNew Hires Accrue 20 days of PTO and 10 Holidays per Year\nHealth Insurance:\nZero Deductible Health Plans\nFlexible Schedules:\nFlex Schedules\nProfessional Development:\nUp to $10,000 Annual Education/Training Reimbursement\nESOP:\nFunded Stock Ownership Plan\n401k Match+:\n6% 401k Match + Immediate Vesting\nBonus Program:\nSemi-Annual Bonus Opportunity\nMentorship:\nCareer Mentorship Programs\nWhy is MTSI a great place to work\nInteresting Work:\nOur co-workers support some of the most important and critical programs to our national defense and security.\nValues:\nOur 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.\n100% Employee Owned:\nWe 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.\nGreat Benefits - Most Full-Time Staff Are Eligible for:\nStarting PTO accrual of 20 days PTO/year + 10 holidays/year\nFlexible schedules\n6% 401k match with immediate vesting up to $9k annually\nSemi-annual bonus eligibility (July and Decemeber)\nCompany funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account\nUp to $10,000 in annual educational reimbursement\nOther company funded benefits, like life and disability insurance\nOptional zero deductible Blue Cross/Blue Shield health insurance plan\nTrack Record of Success:\nWe have grown every year since our founding in 1993.\nModern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance\nMTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.\nFor more information about MTSI, please visitwww.mtsi-va.com\nEEO Statement\nMTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.","company":"Modern Technology Solutions","rawCompany":"modern technology solutions","city":"Bellbrook","state":"OH","isRemote":false,"isActive":false,"createdAt":"2026-04-14T11:03:59.153Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Software Engineer","description":"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.\nJob Description:\nMaintain and enhance a legacy Tomcat web application while planning its transition to a cloud-native architecture.\nRedesign the application for deployment within a Kubernetes cluster to ensure scalability, reliability, and security.\nRefactor traditional monolithic structures into modular microservices using modern integration strategies and emerging enterprise services.\nCollaborate with cross-functional engineering teams to ensure smooth integration of new services following industry best practices.\nDevelop 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.\nImplement new architecture by leveraging Golang-based services and Angular for a modernized front-end experience.\nDocument technical designs, system integration requirements, and transition processes in support of ongoing and future initiatives.\nResponsibilities:\nTake ownership of large sections of the system architecture while working collaboratively with teams.\nDrive agile development practices and support robust continuous integration/continuous delivery (CI/CD) pipelines.\nClearly articulate complex system designs and technical concepts to both technical and non-technical stakeholders.\nOversee the evolution of the software process from development through deployment, ensuring efficient and secure code integration.\nEngage in continuous process improvement to enhance software quality, performance, and reliability.\nRequired Qualifications:\nBachelor’s degree in Computer Science, Software Engineering, or a related technical field.\n5+ years of hands-on software engineering experience.\nProficiency in Java development (Java 8 and Java 21) with expertise in JSP, JSTL, CDI, and Spring frameworks.\nProven experience in maintaining and modernizing web applications, particularly within Tomcat and Kubernetes environments.\nSolid expertise in modern front-end technologies, including Angular, Bootstrap (versions 4 and 5), CSS, SCSS, JavaScript, and JQuery.\nExperience in refactoring monolithic applications into microservices and integrating emerging enterprise services.\nFamiliarity with container orchestration and deployment best practices.\nStrong problem-solving skills and excellent written and verbal communication abilities.\nU.S. Citizenship and must possess an active TS/SCI security clearance or a TS clearance with SCI eligibility.\n\n#LI-BG1\n#MTSI\n\nPerks and Benefits\nVacation:\nNew Hires Accrue 20 days of PTO and 10 Holidays per Year\nHealth Insurance:\nZero Deductible Health Plans\nFlexible Schedules:\nFlex Schedules\nProfessional Development:\nUp to $10,000 Annual Education/Training Reimbursement\nESOP:\nFunded Stock Ownership Plan\n401k Match+:\n6% 401k Match + Immediate Vesting\nBonus Program:\nSemi-Annual Bonus Opportunity\nMentorship:\nCareer Mentorship Programs\nWhy is MTSI a great place to work\nInteresting Work:\nOur co-workers support some of the most important and critical programs to our national defense and security.\nValues:\nOur 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.\n100% Employee Owned:\nWe 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.\nGreat Benefits - Most Full-Time Staff Are Eligible for:\nStarting PTO accrual of 20 days PTO/year + 10 holidays/year\nFlexible schedules\n6% 401k match with immediate vesting up to $9k annually\nSemi-annual bonus eligibility (July and Decemeber)\nCompany funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account\nUp to $10,000 in annual educational reimbursement\nOther company funded benefits, like life and disability insurance\nOptional zero deductible Blue Cross/Blue Shield health insurance plan\nTrack Record of Success:\nWe have grown every year since our founding in 1993.\nModern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance\nMTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.\nFor more information about MTSI, please visitwww.mtsi-va.com\nEEO Statement\nMTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.","datePosted":"2026-04-14T11:03:59.153Z","dateModified":"2026-04-14T11:03:59.153Z","hiringOrganization":{"@type":"Organization","name":"Modern Technology Solutions","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Bellbrook","addressRegion":"OH","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"e56846ba6aa401459fa6df6e"},"url":"https://jobsearcher.com/jobs/e56846ba6aa401459fa6df6e"}}