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

JTEC Consulting

Python Developer (Mid-Senior)

Chantilly, VA · On-site

$150K - $175K/yr

Python Developer (Mid-Senior) Chantilly, VA 20151 JTEC Consulting LLC focuses on successfully ... Qualified candidates will have experience developing microservices in Python using FastAPI. Working ...

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 ...

A-TEK Inc.

Senior Lead Developer

Washington, DC · Remote

The Senior Lead Developer serves as the technical leader for enterprise application development ... Python frameworks (FastAPI, Flask, or Django) * ASP.NET Core * REST API development * JSON/XML ...

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Senior Fastapi Developer information

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How much do senior fastapi developer jobs pay per hour?

As of Aug 1, 2026, the average hourly pay for senior fastapi developer in Arlington, VA is $71.02, according to ZipRecruiter salary data. Most workers in this role earn between $60.29 and $79.66 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.
What are popular job titles related to Senior Fastapi Developer jobs in Arlington, VA? For Senior Fastapi Developer jobs in Arlington, VA, the most frequently searched job titles are:
What cities near Arlington, VA are hiring for Senior Fastapi Developer jobs? Cities near Arlington, VA with the most Senior Fastapi Developer job openings:
Senior Fastapi Developer jobs near you

Senior Python Developer - W2 contract

eSolutionsFirst, LLC

Mclean, VA • On-site

$124K - $167K/yr

Other

Posted 2 days ago

New

Job description

Senior Python Developer   

6 Months contract –  Later Hire (CTH/C2H)

McLean , VA – On-site   M-F  / W2 Contract 

Interview Information:

Rounds: 2 rounds   /  Interview Type: MS Teams - Video Mandatory| In Person

 Must Have Qualifications:

  • 5+ years of engineering experience with at least 2 years of recent Python experience, specializing in heavy data applications.
  • Demonstrates strong data integrity skills and proficiency in c, with a proven track record of leading data-focused projects.

Job Description:

  • We are seeking an experienced Senior Python Developer to join our team.
  • The ideal candidate will have a strong background in Python development, PostgreSQL, Flask or FastAPI, and data transformation using modern data-processing frameworks.
  • You will be responsible for designing, developing, and maintaining data-intensive applications and ETL pipelines.
  • Experience with Informatica and scalable data transformation approaches is preferred.

Responsibilities:

  • Design, build, and maintain scalable Python applications for data processing and analytics.
  • Develop RESTful APIs using Flask or FastAPI.
  • Implement and optimize complex SQL queries and database structures in PostgreSQL.
  • Architect and maintain ETL pipelines using Informatica, ensuring data quality and integrity.
  • Work with large datasets, ensuring efficient data ingestion, transformation, and storage.
  • Develop and optimize data transformation workflows using PySpark.
  • Collaborate with cross-functional teams to define technical requirements and deliver solutions.
  • Troubleshoot and resolve issues in production environments.
  • Mentor junior developers and contribute to best practices.

Requirements:

  • Bachelor’s degree in computer science, Engineering, or related field (or equivalent experience).
  • 5+ years of professional experience as a Python developer.
  • 3+ years of experience with PostgreSQL, including database design and performance tuning.
  • 3+ years of experience developing APIs with Flask or FastAPI.
  • Proven experience working with large datasets and data-intensive applications.
  • Experience integrating AI or machine learning models into data pipelines or applications.
  • Familiarity with Python-based machine learning libraries such as scikit-learn, TensorFlow, or PyTorch.
  • 2+ years of experience with data transformation using PySpark, Dask, Polars, etc.
  • Strong understanding of data modeling, data warehousing, and data integration concepts.
  • Experience with version control systems (e.g., Git).
  • Excellent problem-solving skills and attention to detail.
  • Strong communication and teamwork abilities.

Preferred Qualifications:

  • Hands-on experience with Informatica and ETL processes.
  • Experience with cloud platforms.
  • Familiarity with containerization (Docker, Kubernetes).
  • Knowledge of data visualization tools and techniques.

Apply