Java API Developer

We are seeking a Mid-level API Java Developer to join our team. Working at NT Concepts means you are part of an innovative, agile company dedicated to solving the most critical challenges in National Security.

As a member of our solutions delivery team, you will work on programs advancing critical government systems. NT Concepts seeks an experienced API Java/Python Developer for data transformation opportunities within our Intel Community.

Active TS/SCI with CI Poly clearance required.

Local to the DC Metro Area, Remote Flexible.

As a Mid-Level Java Developer
, you will design, develop, and maintain software applications with a focus on data integration and backend services.

• Software Development: Create maintainable, adaptable, and scalable code using 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 to support extract, transform, and load (ETL) processes. Create and maintain scripts, stored procedures, and 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 (SAP/Sybase, Postgre
  
  SQL, MySQL) and No
  
  SQL databases.
• Stakeholder
  
  Collaboration:
  
  Communicate with data owners and conduct research/analysis on data sets to prepare ingest strategies based on 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.

• 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, Graph
    
    QL, SOAP) and tools (Postman, Swagger UI).
  • Experience with data integration, including ETL processes and data ingest tools (Apache Kafka, NiFi).
  • Experience with SQL (SAP/Sybase) and No
    
    SQL databases.
  • Familiarity with version control systems (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 (Docker, Kubernetes).

• Prolonged periods of sitting at a desk and working on a computer.
• Must be able to lift 10-15 pounds at times.

Founded in 1998 and headquartered in the Washington DC Metro area, NT Concepts is a private, mid-tier company with clients spanning the Intelligence and Defense communities. We deliver end‑to‑end data and technology solutions that advance the modernization, transformation, and automation of the national security mission.

Our employees are the core of NT Concepts. We foster a collaborative environment that encourages technical growth, leadership, and creative problem‑solving. Competitive benefits and opportunities for skill development are available.

We are an equal opportunity employer and do not discriminate on the basis of any protected status. We encourage all qualified candidates to apply.