Java Developer (Mid - SME Level) with FSP

Software Engineering Careers Bethesda, Maryland Overview Java Developer – TS/SCI with Full Scope Polygraph Xcelerate Solutions is seeking a Java Developer to support the design, development, and maintenance of mission-critical systems within an Agile and DevOps framework. This position plays a key role in building scalable, secure, and high-performance backend microservices supporting customer operations and modernization initiatives. The Java Developer will contribute to all phases of the software development lifecycle, from requirements and design to coding, testing, and deployment, ensuring solutions meet mission and technical needs. Security Clearance Top Secret / SCI with Full Scope Polygraph Location Bethesda, MD Responsibilities Design, develop, test, and maintain high-performance, scalable backend microservices using Java and the Spring Framework to meet customer information technology needs. Participate in and direct software programming initiatives, shaping backend architecture, mentoring team members, and conducting code reviews. Develop and direct software system validation and testing methods using JUnit and Katalon, integrating custom-developed software solutions that leverage automated deployment technologies. Develop, prototype, and deploy cloud-based solutions using commercial platform services (AWS, Google Cloud, or Azure). Conduct proof-of-concept, performance, and end-to-end testing to ensure systems meet mission-driven infrastructure and performance requirements. Support the Agile software development lifecycle and collaborate closely with Product Owners, Scrum Masters, and technical team members to ensure user story alignment and implementation. Document and execute system software development and deployment, leveraging GitFlow, GitHub, Jenkins, and scripting languages such as Python and Bash. Apply software development best practices and standard operating procedures to deliver innovative, secure, and reliable technical solutions that support customer missions. Extensive experience with Agile methodologies, service-oriented architectures, and modern DevOps practices. Advanced proficiency with Java, the Spring Framework, and microservices architecture, including RESTful API implementation and integration with relational and NoSQL databases. Strong background in developing software that interfaces with data technologies such as Elasticsearch, PostgreSQL, DynamoDB, Kafka, AWS SQS/SNS, AWS Lambda, and AWS S3. Proven experience integrating and delivering within DevOps toolsets and automated CI/CD pipelines. Direct experience with JUnit, Python, and Bash for performance testing and scripting in an Agile environment. Hands-on experience with commercial cloud platforms (AWS, Google Cloud, Azure) and leveraging cloud data services (S3, RDS, EFS). Experience with version control systems and issue tracking systems to ensure collaboration, visibility, and quality. Qualifications High school diploma plus 8 - 20+ years of relevant experience Bachelor’s degree plus 4 – 10 years of relevant experience Master’s degree plus 4 - 15+ years of relevant experience Doctorate and 13+ years of relevant experience Active TS/SCI clearance with polygraph required About Xcelerate Solutions Founded in 2009 and headquartered in McLean, VA, Xcelerate Solutions ( is one of America's fastest-growing companies. Xcelerate’s culture is defined by our diversified workforce of dynamic and versatile professionals, supported with growth and development opportunities that contribute to individual and company growth. This strong commitment to our employees has been recognized by our inclusion on the Washington Business Journal’s “50 Best Places to Work” list as well as being a “Great Place to Work” certified company with a 4.6 star, and a 99% CEO approval Glassdoor rating. Come find out why Xcelerate Solutions is one of the DC Metro top employers! Xcelerate Solutions is an Equal Employment Opportunity/Affirmative Action Employer. We evaluate qualified applicants without regard to race, color, national origin, religion, age, equal pay, disability, veteran status, sex, sexual orientation, gender identity, genetic information, or expression of another protected characteristic. As part of this commitment to the full inclusion of all qualified individuals, Xcelerate provides reasonable accommodations if needed because of an applicant's or an employee's disability. Pay Transparency Notice: Xcelerate Solutions will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. #J-18808-Ljbffr