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# Full Stack Developer

- **Company:** Mantech International Corporation
- **Location:** United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), Apache HTTP Server, Server Applications, Software Applications, Architectural Patterns, Asana, JIRA, Oracle WebLogic Server, Cascading Style Sheets (CSS), Software Documentation, CompTIA Security+, Continuous Integration, Relational Databases, Linux, Github, JSON, Python (Programming Language), Microsoft Office, Object-Oriented Software Development, Systems Development Life Cycle, Single Sign-On, Software Engineering, Systems Integration, Extensible Markup Language (XML), Freeform SQL, Okta, ReactJS, Flask (Web Framework), Delivery Pipeline, Backend, Git, Fastapi, Vue.js, AngularJS, Gitlab-ci, Information Technology, Front End Software Development, Functional Programming, Restful APIs, Software Version Control, Api Management, Jenkins
- **Published:** November 13, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9310785/full-stack-developer

## About the Role

* Possession of a Bachelor's degree in Computer Science, a related technical field, or equivalent practical experience (6 additional years of experience).
 * 3 + years of professional full-stack software development experience across the complete SDLC.
 * Demonstrated experience migrating and modernizing legacy software applications to modern architectures.
 * Solid proficiency in Object-Oriented Programming (OOP) with Java and functional programming with Python.
 * Hands-on experience developing front-end interfaces using HTML, CSS, and JavaScript, alongside API integrations utilizing JSON and XML.
 * Demonstrated experience utilizing modern IDEs, Git-based version control, CI/CD pipelines, and ticketing platforms such as Jira or Asana., * Master's degree in Computer Science, Software Engineering, or an Information Technology discipline.
 * Industry-recognized certifications such as CompTIA Security+, Network+, Linux+, or relevant Java/Python certifications.
 * Experience utilizing modern front-end frameworks (Vue.js, React, or Angular) and Python backend frameworks (Flask or FastAPI).
 * Experience working with relational databases, writing complex SQL queries, and integrating Single Sign-On (SSO) solutions such as Okta.

Clearance Requirements:

 * Must be a U.S. Citizen (no dual citizenship) with the ability to pass a background investigation and obtain and maintain DHS Suitability / Entry on Duty (EOD).

Physical Requirements:

 * Must be able to remain in a stationary position 50% of the time.
 * Needs to occasionally move about inside the workspace to access office equipment.
 * Frequently communicates with co-workers, management, and stakeholders via email, phone, and virtual channels.
 * Must be able to exchange accurate information in these situations.

## Description

* Collaborate closely with cross-functional development teams to solve complex technical problems and design modernization solutions for legacy applications.
 * Design, develop, test, and deploy robust full-stack software solutions across the entire Software Development Life Cycle (SDLC).
 * Build and integrate responsive front-end user interfaces using HTML, CSS, and modern JavaScript.
 * Engineer and maintain secure RESTful APIs and backend services using Java, Python, XML, and JSON.
 * Configure, monitor, and maintain application servers and deployment environments including WebLogic and Apache Services.
 * Manage version control repositories and streamline CI/CD automation pipelines using Git, GitLab CI, GitHub Actions, or Jenkins.
 * Create and maintain clear technical artifacts, architecture diagrams, and system documentation using Microsoft Office Suite.