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

Samprasoft

Senior Python Developer | McLean,VA

Mclean, VA · On-site

$124K - $167K/yr

Python Developer Position This position may be offered to a candidate authorized to work in the US ... Python, Django/Flask/FastAPI, NumPy, pandas and Relational Database * Refactoring Skills: Knowledge ...

Samprasoft

Sr. Python Developer | McLean, VA

Mclean, VA · On-site

$124K - $167K/yr

Python Developer This position may be offered to a candidate authorized to work in the US for his ... Python, Django/Flask/FastAPI, NumPy, pandas and Relational Database * Refactoring Skills: Knowledge ...

BTree Solutions, Inc.

SR. FRONTEND DEVELOPER

Mclean, VA · On-site

$116K - $153K/yr

Job Title: SR. FRONTEND DEVELOPER Location: Mclean,VA Duration: 12+ Months Visa: USC, GC, H1B and ... Integrate front-end applications with backend services (built with Python/FastAPI) and data sources ...

Dark Wolf Solutions

Senior Data Engineer

Herndon, VA · On-site

$150K - $175K/yr

They will utilize leading languages and frameworks, including Python (FastAPI), AWS, SQL (Trino SQL ... DevOps practices and modern programming languages and frameworks to develop and engineer data ...

Dark Wolf Solutions

Senior Data Engineer

Herndon, VA · Hybrid

$150K - $175K/yr

They will utilize leading languages and frameworks, including Python (FastAPI), AWS, SQL (Trino SQL ... DevOps practices and modern programming languages and frameworks to develop and engineer data ...

Apply Early

Dark Wolf Solutions

Senior Data Engineer

Herndon, VA · Hybrid

$150K - $175K/yr

They will utilize leading languages and frameworks, including Python (FastAPI), AWS, SQL (Trino SQL ... DevOps practices and modern programming languages and frameworks to develop and engineer data ...

Two Six Technologies

Senior DevOps Engineer

Arlington, VA · On-site

$149K - $192K/yr

Two Six Technologies is looking for a Senior DevOps Engineer to work within a cross-functional ... Hands-on experience with Python frameworks such as Django or FastAPI. Automation and Configuration ...

Two Six Technologies

Senior DevOps Engineer

Arlington, VA · On-site

$149K - $192K/yr

Two Six Technologies is looking for a Senior DevOps Engineer to work within a cross-functional ... Hands-on experience with Python frameworks such as Django or FastAPI. • Automation and ...

Vantor

Senior Software Engineer

Arlington, VA · On-site

$141K - $186K/yr

They are seeking a Senior Software Engineer to develop high-performance API-driven services and ... Preferred : • Experience with Spring Boot, Flask, FastAPI, Django, or similar frameworks. • ...

Artech

Python Developer-Full Stack Senior

Mclean, VA · On-site

Introduction Join our dynamic team as a Senior Python Full Stack Developer in McLean, VA. This is a ... Django and FastAPI. * 5 years of experience with SQL, including complex query analysis and ...

Zetier

Full-Stack Engineer

Arlington, VA · Hybrid

Senior Full-Stack Engineer Zetier is seeking a senior full-stack engineer to build modern, secure ... Flask, FastAPI) * Familiar with responsive design frameworks (Bootstrap, Material) * Practical ...

NewGen

Full Stack Developer

Chantilly, VA · On-site

... in Flask, Django, FastAPI; including developing associated testing (unit and integration ... Senior Recruiter bmorris @newgentechnologies.com www.newgentechnologies.com

Zetier

Full-Stack Engineer

Arlington, VA · On-site

Senior Full-Stack Engineer Zetier is seeking a senior full-stack engineer to build modern, secure ... Flask, FastAPI) * Familiar with responsive design frameworks (Bootstrap, Material) * Practical ...

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All JobsSenior Fastapi Developer JobsSenior Fastapi Developer Jobs in Ashburn, VA

Senior Fastapi Developer information

See Ashburn, VA salary details

$15

$63

$89

How much do senior fastapi developer jobs pay per hour?

As of Jul 5, 2026, the average hourly pay for senior fastapi developer in Ashburn, VA is $63.13, according to ZipRecruiter salary data. Most workers in this role earn between $53.61 and $70.82 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 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 key skills and qualifications needed to thrive as a Senior FastAPI Developer, and why are they important?

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.
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Senior Fastapi Developer jobs near you
Senior Python Developer | McLean,VA

Senior Python Developer | McLean,VA

Samprasoft

Mclean, VA • On-site

$124K - $167K/yr

Other

Posted 17 days ago

Job description

Python Developer Position

This position may be offered to a candidate authorized to work in the US for his/her/their stated employer, without any restrictions which would prevent the candidate from working on the proposed assignment for the duration of the assignment period.

Must Haves: Python, Rest API (Flask or Fast API), Pandas or NumPy, Pytest or Unitest

The position is focused on python development of components for a software application platform that will produce enterprise level reporting based on financial statements and models.

The candidate will develop and support the middle layer of the application to build, test, and deploy RESTful micro services, create shared services components, and collaborate with other Dev teams, Dev Ops, and User Interface teams.

Responsibilities include:

  • Engineer capable of designing solutions, writing code, testing code, automating test and deployment
  • Develop and maintain high-quality software code and automated tests (including Unit, Functional, Performance, Acceptance) for web interface application that integrates data, analytics, and reporting components
  • Predictable results: changes in code can be proven to be correct and bug-free
  • Production resilience: system must be highly available with minimal downtime
  • High performance: develop scalable calculations to maintain performance over large data sets
  • Ready, willing, and able to pick up new technologies and pitch in on story tasks (design, code, test, CI/CD, deploy, etc.)

Technical Skills:

  • Strong Proficiency in Python programming language, including experience with frameworks such as Flask, Django and FastAPI
  • Experience with RESTful APIs and microservices architecture, and an understanding of how to design and implement them effectively.
  • Back End Skills: Python, Django/Flask/FastAPI, NumPy, pandas and Relational Database
  • Refactoring Skills: Knowledge of how to refactor code to improve its quality, maintainability, performance, and scalability while preserving its functionality.
  • Automation Testing: Pytest, Unitest, Monkey patch, pytest-mockito etc.

Apply