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International Logic Systems, Inc. Logo

Senior Full-Stack Java Engineer

International Logic Systems, Inc.

Salary not specified
Dec 31, 2025
Fairfax, VA, US
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ILS Inc. is seeking a Senior Full-Stack Java Engineer to support a major federal modernization initiative, requiring expertise in both backend services and user interfaces within an Agile, cloud-based environment.

Requirements

  • 10+ years of professional experience in Java-based full-stack development.
  • Expert-level backend development with Spring Boot, REST APIs, and microservices architecture.
  • Proficiency in frontend technologies such as Angular, HTML5, CSS, and JavaScript.
  • Experience with AWS, containerized deployments (Docker), and CI/CD automation (Jenkins).
  • Strong understanding of relational databases (PostgreSQL, Oracle, or SQL Server).
  • Solid grasp of software engineering principles, testing methodologies, and Agile development practices.
  • Experience with frontend unit testing frameworks (e.g., Jasmine, Karma).

Responsibilities

  • Design, develop, and maintain scalable microservices using Java 17+ and Spring Boot.
  • Build RESTful APIs and backend services that integrate with relational databases and external systems.
  • Contribute to the development of responsive user interfaces using Angular or similar modern JavaScript frameworks.
  • Participate in cloud migration efforts and application deployment on AWS.
  • Write unit and integration tests using JUnit, Mockito, and Cucumber.
  • Collaborate with DevOps to support CI/CD pipelines using Jenkins and containerization tools like Docker.
  • Troubleshoot issues across the full application stack and contribute to continuous improvements.

Other

  • Team Lead and POC for the project.
  • Functions as SME and advocate for software applications.
  • Conveys the solution through architecture and design artifacts.
  • Acts as the bridge between enterprise architecture and applications development.
  • MUST BE LOCAL TO DC METRO AREA (hybrid support - 2 days in ILS HQ office, located in Fairfax, VA 22033).