26-3103: Senior Full Stack Software Developer - McLean, VA

Navitas Business Consulting; Herndon (VA); On-site; USD 130,000 - 150,000; Full time

Job summary

Navitas Business Consulting in McLean, VA is seeking a Senior Full Stack Software Developer to lead the migration from Java/Spring Boot to Python frameworks such as Django, FastAPI, and Flask. You will design, build, and scale services across both stacks during the transition.

Ideally, you bring 7–10 years of backend experience, deep Java knowledge, and strong Python skills to deliver secure, cloud-native REST APIs and microservices, with PostgreSQL and AWS CI/CD pipelines driving deployments.

Qualifications

• 7–10 years of backend development experience.
• Hands-on experience with Java + Spring Boot.
• Experience with Python and Django, FastAPI, or Flask.
• Strong knowledge of SQL and PostgreSQL.
• Experience with AWS services and CI/CD pipelines.
• Experience with test automation (PyTest, JUnit, Selenium, etc.).
• Experience building REST APIs and microservices.
• Ability to work onsite in a fast-paced environment.

Responsibilities

• Work on existing backend services built in Java + Spring Boot.
• Lead the transition to Python frameworks (Django / FastAPI / Flask).
• Build scalable REST APIs and microservices in Java and Python during migration.
• Design and optimize database schemas using PostgreSQL.
• Implement and maintain AWS CI/CD pipelines for deployments.
• Develop and maintain test automation frameworks for Java and Python.
• Collaborate with architects, DevOps, QA, and product teams.
• Troubleshoot, debug, and optimize performance across both stacks.
• Ensure best practices in security and cloud-native development.

Skills

Java + Spring Boot

Python (Django FastAPI Flask)

PostgreSQL

REST APIs & microservices

AWS CI/CD pipelines

Test automation

SQL

Onsite work

Tools

Django

FastAPI

Flask

Selenium

JUnit

PyTest

Job description

Senior Full Stack Software Developer

Job ID#: 26-3103

Clearance: N/A

Location: McLean, VA

Who We Are

Since our inception back in 2006, Navitas has grown to be an industry leader in the digital transformation space, and we've served as trusted advisors supporting our client base within the commercial, federal, and state and local markets.

What We Do

At our very core, we're a group of problem solvers providing our award-winning technology solutions to drive digital acceleration for our customers! With proven solutions, award-winning technologies, and a team of expert problem solvers, Navitas has consistently empowered customers to use technology as a competitive advantage and deliver cutting-edge transformative solutions.

Role Overview

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

Required Skills & Experience

• 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

Salary: $130,000 - $150,000

The pay range provided is a good-faith estimate and represents the range the company reasonably expects to pay for this position at the time of posting. Individual compensation may vary based on skills, experience, education, certifications, geographic location, and business needs.

Equal Employer/Veterans/Disabled

Navitas Business Consulting is an affirmative action and equal opportunity employer. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please contact Navitas Human Resources.

Navitas is an equal opportunity employer. We provide employment and opportunities for advancement, compensation, training, and growth according to individual merit, without regard to race, color, religion, sex (including pregnancy), national origin, sexual orientation, gender identity or expression, marital status, age, genetic information, disability, veteran-status veteran or military status, or any other characteristic protected under applicable Federal, state, or local law. Our goal is for each staff member to have the opportunity to grow to the limits of their abilities and to achieve personal and organizational objectives. We will support positive programs for equal treatment of all staff and full utilization of all qualified employees at all levels within Navitas.