> Markdown version of [/jobs/ext/245075-java-api-developer](https://www.wearedevelopers.com/jobs/ext/245075-java-api-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java API Developer - **Company:** NT Concepts - **Location:** Herndon, VA, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Microsoft Azure, Static Program Analysis, Code Reuse, Code Review, Continuous Integration, Data Files, Data Integration, Extract Transform Load (ETL), Data Transformation, Data Structures, Python (Programming Language), PostgreSQL, MySQL, NoSQL, Swagger, SAP (Applications), Simple Object Access Protocol (SOAP), Software Engineering, SQL Stored Procedures, SQL Databases, Software Organization, Data Storage Management, Google Cloud, File Transfer Protocol (FTP), Cloud Platform System, Test-Driven Development (TDD), Postman, Spring-boot, Sybase, Backend, Git, Containerization, Kubernetes, Apache Kafka, Apache Nifi, Graphql, Data Objects, Front End Software Development, Api Design, Api Gateway, Restful APIs, Code Restructuring, Software Version Control, Docker, Microservices - **Published:** May 15, 2026 - **Apply:** https://www.clearancejobs.com/jobs/8917083/java-api-developer ## About the Role * Education/Experience: Bachelor's degree in a related field and 2-5 years of relevant experience using Java, JavaScript, or other languages for the creation of API-based software. * Clearance: Active TS/SCI with CI Poly clearance required. * Technical Skills: + Proficiency in Java, with experience in frameworks such as Spring Boot. + Experience with JavaScript. + Strong understanding of API architectural styles (REST, GraphQL, SOAP) and tools (e.g., Postman, Swagger UI). + Experience with data integration, including ETL processes and data ingest tools (e.g., Apache Kafka, NiFi). + Experience with SQL (e.g., SAP/Sybase) and NoSQL databases. + Familiarity with version control systems (e.g., Git). + Knowledge of Agile/Scrum development methodologies and software development best practices (TDD, CI/CD). + Experience with cloud platforms (AWS, Azure, GCP). + Familiarity with containerization technologies (e.g., Docker, Kubernetes). Physical Requirements: * Prolonged periods of sitting at a desk and working on a computer * Must be able to lift 10-15 pounds at times. ## Description Mission Focus: As a member of our solutions delivery team, you will have the unique opportunity to work on programs advancing the most critical government systems. NT Concepts is seeking an experienced API Java/Python Developer, Mid for an exciting data transformation opportunity within our Intel Community., As a Mid-Level Java Developer, you will be responsible for designing, developing, and maintaining software applications, with a focus on data integration and backend services. * Software Development: Create maintainable, adaptable, and scalable code using software development best practices (e.g., software reuse, refactoring, continuous integration, test automation, TDD, static code analysis, and peer/code review). * Data Integration & ETL: Provide Java coding in support of extract, transform, and load (ETL) processes. Create and maintain scripts, stored procedures, and other logic to create, update, and delete data. * API Development: Develop RESTful APIs and microservices to enable secure and efficient system communication and synchronize business data between multiple endpoints. * Data Ingest: Configure and manage data ingest components in a cloud platform, such as Apache Kafka, NiFi, FTP, or an API gateway. * Database Management: Design and implement schema changes, manage indexes, and alter data objects to optimize performance. Utilize SQL (e.g., SAP/Sybase, PostgreSQL, MySQL) and NoSQL databases for data storage and retrieval. * Stakeholder Collaboration: Communicate with data owners and conduct research/analysis on data sets to prepare ingest strategies based upon data structure, size, frequency, and other sharing requirements. * Team Collaboration: Work closely with frontend developers, product managers, and QA teams in an Agile environment to define requirements and ensure seamless integration and functionality. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [API = Some REST and HTTP, right? 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