Full Stack Developer

Purpose and Impact: (a write up about the program that will attract candidates) Our Full-Stack Developers work in a dynamic, mission-driven environment to develop geolocation capabilities, adapting to changing priorities that directly support the warfighter. In this role, you will create service-oriented architectures in Java and microservice solutions, and build web interfaces. You will participate in the full lifecycle of your code, from translating requirements into user stories, through integration and testing, to deployment and Tier 3 support. Work Schedule: (shift hours and days of the week) 5 Days/ 8 hours per day Essential Responsibilities: (describe the day-to-day) Perform software development predominantly using Java to create and implement enhancements to existing capabilities Collaborate with software and systems engineers in an agile environment to analyze requirements and derive user stories for development planning Perform integration and testing as needed Test and debug code for integrated applications Leverage SI to debug code, conduct code reviews, and improve code quality and efficiency Provide Tier 3 support for deployed capabilities and address bug fixes Communicate and collaborate effectively with other team members, as well as with stakeholders Work Environment, Physical Demands, and Mental Demands: Minimum Requirements (Knowledge, Skills, and Abilities): Experience with Enterprise Java development (versions 17 or higher) Experience with Java application frameworks, such as Spring Boot Experience with messaging frameworks such as JMS, RabbitMQ, ActiveMQ, ZeroMQ, and supporting data formats such as JSON, XML, and Google Protocol Buffers Experience developing service-oriented architectures Experience developing micro service solutions Database experience such as Mongo or MySQL Experience analyzing requirement, creating use cases, and test cases and tracking work using the Atlassian tool suite (Jira/Confluence) DevOps experience including managing CI/CD pipelines to automate building, testing, and deploying code utilizing GitLab runners Experience implementing 508 Compliance requirements to user interfaces Familiarity with or willingness to perform agentic coding Ability to leverage SI to debug code, conduct code reviews, improve code quality and efficiency, and determine root-cause analysis Experience with Python development Ability to work individually or as part of a team and shift between priority tasks as directed Security Clearance Required: TS//SCI w Poly - Maryland Minimum Education: Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required. Four (4) years of additional SWE experience on projects with similar software processes may be substituted for a bachelor’s degree. Minimum Years of Experience: Fourteen (14) years’ experience as a SWE in programs and contracts of similar scope, type, and complexity is required. Required Certifications: (if needed) Preferred Qualifications: AI if applicable to your program Experience with Java development IDEs (e.g. IntelliJ, Eclipse, VS Code) Experience/knowledge with installations and configuration utilizing Kubernetes, Docker Compose and Nifi Experience with Elasticsearch Experience with geolocation applications and/or JICD Experience/knowledge of ISLANDTRANSPORT, messaging infrastructure Exposure to/basic familiarity with Python libraries for scientific programming (examples: NumPy, pandas) desired Ability to read and write into/out of the data structures adjacent to complex mathematics Additional Hashtags: #javelin Compensation Details: $218,000 - $241,000 The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws. Benefits Overview: Our health and welfare benefits are designed to support you and your priorities. Offerings include: Health, dental, and vision insurance Paid time off and holidays Retirement benefits (including 401(k) matching) Educational reimbursement Parental leave Employee stock purchase plan Tax-saving options Disability and life insurance Pet insurance Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits. Original Posting: 10/30/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs. Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters. Welcome back! We encourage you to check on the status of your current job applications with us. You can also search for a list of our current job openings and see if there are any new positions that might be a good fit for you. Thank you for continued interest in employment with Amentum. For more than 100 years, Amentum has tackled the world’s toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA. Find us online at https://www.amentum.com/ If you need a reasonable accommodation for any part of the employment process, please complete our Accommodation Request. 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