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# Senior Full Stack Software Developer - McLean, VA

- **Company:** Navitas Business Consulting Inc
- **Location:** McLean, VA, United States
- **Experience:** Expert
- **Salary:** $130,000.0 - $150,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Amazon Web Services, Application Performance Management, Automation of Tests, Cloud Computing, Software Quality, Software Debugging, DevOps, Django Web Framework, Junit, Python (Programming Language), PostgreSQL, Standard Sql, Selenium, Software Testing Automation Framework, Web Application Frameworks, Flask (Web Framework), Spring-boot, Backend, Fastapi, Pytest, Deployment Automation, Restful APIs, Microservices
- **Published:** August 8, 2026
- **Apply:** https://www.careerjet.com/jobad/uscecabf8810ab7da6f26f495fa86785dd

## About the Role

* 7-10 years of backend development experience
 * Strong hands-on experience with Java + Spring Boot
 * Solid experience with Python and at least one major framework:

 * Django
 * FastAPI/Flask
 * Strong knowledge of SQL & PostgreSQL
 * Experience with AWS services and CI/CD pipelines
 * Hands-on experience with test automation (PyTest, JUnit, Selenium, etc.)
 * Experience building REST APIs and microservices
 * Ability to work in an onsite, fast-paced environment

## Description

Our client currently operates a Java/Spring Boot-based environment and is now transitioning core backend services to Python. We are seeking a developer with strong Java experience who can lead and support the migration toward Python frameworks such as Django, FastAPI, and Flask.
This role is ideal for someone who has worked extensively in Java and is now proficient in Python, capable of building new services while modernizing existing ones.
What You Will Do

 * Work on existing backend services built in Java + Spring Boot
 * Lead the transition and development of new services using Python (Django / FastAPI / Flask)
 * Build scalable REST APIs and microservices in both Java and Python during the migration phase
 * Design and optimize database schemas using PostgreSQL
 * Implement and maintain AWS CI/CD pipelines for automated deployments
 * Develop and maintain test automation frameworks for both Java and Python codebases
 * Collaborate with architects, DevOps, QA, and product teams to ensure smooth migration
 * Troubleshoot, debug, and optimize application performance across both stacks
 * Ensure best practices in security, cloud-native development, and code quality, MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA. In this role, you will contribute directly to innovative projects …
 + 1 month ago


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