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Senior Fastapi Developer Jobs in Reston, VA (NOW HIRING)

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Senior Full Stack Developer Remote We are seeking a Senior Full Stack Developer to support a ... Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ...

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Senior Fastapi Developer information

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How much do senior fastapi developer jobs pay per hour?

As of Sep 15, 2026, the average hourly pay for senior fastapi developer in Reston, VA is $64.22, according to ZipRecruiter salary data. Most workers in this role earn between $54.52 and $72.02 per hour, depending on experience, location, and employer.

What does a Senior FastAPI Developer do?

A Senior FastAPI Developer designs, develops, and maintains backend web applications using the FastAPI framework in Python. They are responsible for building scalable APIs, optimizing performance, ensuring security best practices, and integrating with databases and external services. Senior developers also mentor junior team members, contribute to architecture decisions, and collaborate closely with front-end engineers and stakeholders to deliver robust software solutions.

What are the key skills and qualifications needed to thrive as a Senior FastAPI Developer?

To thrive as a Senior FastAPI Developer, you need deep expertise in Python, RESTful API design, and experience building scalable web backends, typically supported by a degree in computer science or related field. Familiarity with FastAPI, Docker, cloud platforms (such as AWS or Azure), and CI/CD tools is highly valued, along with proficiency in testing frameworks. Strong problem-solving, leadership, and communication skills help you collaborate effectively with cross-functional teams and mentor junior developers. These skills enable the delivery of robust, efficient, and maintainable APIs that support business goals and high user demands.

What are some common challenges faced by Senior FastAPI Developers when scaling applications, and how can these be addressed?

Senior FastAPI Developers often encounter challenges related to managing high concurrency, optimizing API performance, and ensuring robust security as applications scale. To address these, it’s important to implement asynchronous programming practices, leverage efficient database queries, and utilize API gateways for better traffic management. Collaboration with DevOps and QA teams is also essential to automate deployments and monitor system health, ensuring smooth scaling and reliable user experiences.

What are the most commonly searched types of Fastapi Developer jobs in Reston, VA?

The most popular types of Fastapi Developer jobs in Reston, VA are:

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For Senior Fastapi Developer jobs in Reston, VA, the most frequently searched job titles are:

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Senior Fastapi Developer jobs near you
Infographic showing various Senior Fastapi Developer job openings in Reston, VA as of August 2026, with employment types broken down into 79% Full Time, 3% Part Time, and 18% Contract. Highlights an 81% Physical, 4% Hybrid, and 15% Remote job distribution, with an average salary of $133,581 per year, or $64.2 per hour.

Senior Full-Stack Developer

Mclean, VA • On-site

Valiant Tek Group, Inc
See more jobs at Valiant Tek Group, Incexternal

Other

Posted 20 days ago

Job description

Title: Senior Full-Stack Developer

Location: Rockville, MD or McLean, VA or Woodbridge, NJ (Hybrid)

Contract: 6+ month Contract with extension

Only Local candidates who can take Assessment and only who are in DC/VA/MD/NY/NJ who can got for F2F interview

Role Overview

Technical Profile

  • Seeking a strong Full-Stack Developer with significant backend engineering experience.
  • Strong Java foundation is important; approximately 10 years of Java experience is preferred.
  • The organization is moving away from being exclusively Java-focused, so developers need to be comfortable working across multiple languages.
  • Primary backend technologies:
    • Java
    • Python, including FastAPI
    • Node.js
  • Ideal candidates should be strong in at least 2 of the 3 backend technologies: Java, Python, and Node.js.
  • Some engineers may have historically worked heavily in Java but are now primarily developing in Python.
  • Candidates should be comfortable switching between languages/projects as business needs change.
  • Angular 10+ experience is required for front-end development.
  • AWS experience is required from an operational/development standpoint.
  • Current projects include:
    • A Python/FastAPI-based application
    • An AWS Lambda-based, highly agentic/AI-focused application
    • Existing Java-based applications
  • Looking for strong foundational software engineering skills rather than someone limited to a single technology stack.

Ideal Candidate

  • Senior-level full-stack engineer.
  • Approximately 10+ years of Java/software development experience.
  • Strong Java foundation with the ability to work in Python and/or Node.js.
  • Comfortable moving between different languages, architectures, and applications.
  • Angular 10+ experience.
  • Strong AWS experience.
  • Able to explain technical decisions and communicate their problem-solving approach clearly.
  • Adaptable to a growing portfolio that includes traditional applications as well as newer AI/agentic solutions.

Interview Process

Round 1 Coding Assessment

  • 30-minute Zoom coding session using Glider AI.
  • Candidate receives a relatively straightforward coding problem.
  • Evaluation is not solely based on getting the correct answer.
  • Candidates should:
    • Explain how they understand the problem.
    • Talk through their proposed approach.
    • Communicate their reasoning while coding.
    • Demonstrate structured problem-solving.
    • Ultimately arrive at a workable/correct solution.

Round 2 Panel Interview

  • Four-person panel.
  • Focuses on behavioral and experience-based questions.
  • Candidates should be prepared to discuss:
    • Problems they have solved.
    • Projects they have owned or contributed to.
    • Technical challenges and how they approached them.
    • Collaboration and communication.
    • Their individual contribution and impact.
EDUCATION
Bachelor s Degree in Computer Science, Information Systems, Engineering or related field or equivalent work experience.

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