Full Stack Software Engineer (Java/Spring Boot/Angular/PostgreSQ

Description

Markon is seeking an experienced Full Stack Software Engineer to support a customer in the Annapolis Junction, MD area. This role will focus on developing, modernizing, and maintaining enterprise web applications using Java, Spring Boot, Angular, and PostgreSQL. The position combines full-stack software development with DevOps responsibilities, including backend framework upgrades, frontend enhancements, database optimization, and cloud infrastructure management. The engineer will collaborate with cross-functional teams to deliver secure, scalable, and reliable applications supporting mission-critical operations.

Telework flexibility available based on mission requirements.

Responsibilities

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  Design, develop, and maintain backend microservices using Java and Spring Boot.
  
  
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  Develop and enhance responsive frontend applications using Angular.
  
  
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  Design, implement, and document secure RESTful APIs to support application functionality and system integration.
  
  
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  Manage and optimize PostgreSQL databases, including schema updates, performance tuning, and data integration.
  
  
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  Support backend framework upgrades and application modernization initiatives.
  
  
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  Build, deploy, and maintain containerized applications using Docker and DevOps automation tools.
  
  
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  Configure and support cloud-based infrastructure within Amazon Web Services environments.
  
  
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  Troubleshoot application, database, and infrastructure issues to ensure system performance and reliability.
  
  
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  Collaborate with software engineers, system administrators, and stakeholders throughout the software development lifecycle.
  
  
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  Maintain technical documentation, participate in code reviews, and support continuous improvement of development and deployment processes.
  
  

Qualifications

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  Active TS/SCI clearance with Polygraph required.
  
  
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  Experience developing full-stack web applications using Java, Spring Boot, and Angular.
  
  
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  Strong experience with Java and Spring Boot, including microservices development and backend framework modernization.
  
  
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  Experience developing frontend applications using Angular 19 or newer.
  
  
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  Experience designing and integrating RESTful APIs.
  
  
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  Experience with PostgreSQL, including database design, schema management, and query optimization.
  
  
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  Experience working with Amazon Web Services and cloud-based application infrastructure.
  
  
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  Proficiency with Docker, Git, Maven, and Ansible.
  
  
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  Experience administering or developing applications in Linux or Red Hat Enterprise Linux environments.
  
  
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  Familiarity with Node.js and modern JavaScript development.
  
  
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  Experience using development and collaboration tools such as VS Code, IntelliJ, Jira, and Confluence.
  
  
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  Strong troubleshooting, problem-solving, and communication skills.
  
  

Desired Qualifications

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  Experience with Spring Boot 3.5 or 4.0 and modern Java application frameworks.
  
  
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  Experience modernizing legacy applications and upgrading backend frameworks.
  
  
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  Experience implementing automated deployment pipelines and DevOps best practices.
  
  
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  Familiarity with cloud infrastructure automation, container orchestration, and application monitoring.
  
  
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  Experience supporting enterprise applications within Intelligence Community or government environments.
  
  Work Arrangement: Up to two days of telework per week, subject to customer approval.