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

Zvolvant

AI/ML Developer

Washington, DC · On-site

AI/ML DeveloperIntroduction Zvolvant is currently seeking a Senior AI Developer to lead the design ... Build secure, containerized APIs using FastAPI and Docker. * Deploy applications to Azure ...

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 ...

Two Six Technologies

Senior DevOps Engineer

Arlington, VA

$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 ...

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 ...

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 ...

TranSquared inc

Senior Python Developer

Mclean, VA · On-site

$124K - $167K/yr

Looking for a Senior Python Developer with good experience in developing MicroServices using popular Python frameworks such as Pandas, Django and FastAPI. Need someone with experience using Git for ...

Two Six Technologies

Senior DevOps Engineer

Arlington, VA · On-site

$149K - $192K/yr

They are seeking a Senior DevOps Engineer to join their cybersecurity technology team, where the ... Hands-on experience with Python frameworks such as Django or FastAPI. • Automation and ...

Hatch IT

Senior AI Software Engineer

Washington, DC · Remote

$180K - $210K/yr

Expression is seeking an experienced Senior AI Software Engineer and Technical Lead to lead the ... Develop high-performance backend services using Python, FastAPI, asynchronous programming, and ...

Hatch IT

Senior AI Software Engineer

Washington, DC

$138K - $182K/yr

Expression is seeking an experienced Senior AI Software Engineer and Technical Lead to lead the ... Develop high-performance backend services using Python, FastAPI, asynchronous programming, and ...

Expression

Senior AI Software Engineer

Washington, DC · On-site +1

$180K - $210K/yr

Expression is seeking an experienced Senior AI Software Engineer and Technical Lead to lead the ... Develop high-performance backend services using Python, FastAPI, asynchronous programming, and ...

Expression

Senior AI Software Engineer

Washington, DC · On-site

$180K - $210K/yr

Expression is seeking an experienced Senior AI Software Engineer and Technical Lead to lead the ... Develop high-performance backend services using Python, FastAPI, asynchronous programming, and ...

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 ...

Expression

Senior AI Platforms Engineer

Washington, DC · On-site

$180K - $210K/yr

Expression is seeking an experienced Senior AI Platform Engineer to join our Product Team and ... Develop high-performance Python APIs and scalable backend services using FastAPI, asynchronous ...

Expression

Senior AI Platforms Engineer

Washington, DC · On-site

$180K - $210K/yr

Expression is seeking an experienced Senior AI Platform Engineer to join our Product Team and ... Develop high-performance Python APIs and scalable backend services using FastAPI, asynchronous ...

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Senior Fastapi Developer information

See Reston, VA salary details

$16

$64

$91

How much do senior fastapi developer jobs pay per hour?

As of Jul 14, 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 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 Reston, VA? For Senior Fastapi Developer jobs in Reston, VA, the most frequently searched job titles are:
What job categories do people searching Senior Fastapi Developer jobs in Reston, VA look for? The top searched job categories for Senior Fastapi Developer jobs in Reston, VA are:
What cities near Reston, VA are hiring for Senior Fastapi Developer jobs? Cities near Reston, VA with the most Senior Fastapi Developer job openings:
Senior Fastapi Developer jobs near you
Infographic showing various Senior Fastapi Developer job openings in Reston, VA as of July 2026, with employment types broken down into 85% Full Time, 3% Part Time, 1% Temporary, and 11% Contract. Highlights an 82% Physical, 3% Hybrid, and 15% Remote job distribution, with an average salary of $133,581 per year, or $64.2 per hour.

AI/ML Developer

Zvolvant

Washington, DC • On-site

Other

Posted 20 days ago

Job description

AI/ML DeveloperIntroduction

Zvolvant is currently seeking a Senior AI Developer to lead the design and implementation of advanced AI systems that support federal mission objectives. The focus will be on transforming Generative AI, Natural Language Processing (NLP), and Agentic AI solutions into secure, enterprise-level deployments using Microsoft Azure AI technologies.

Responsibilities
  • Design and implement LLM-powered applications utilizing Azure OpenAI.
  • Develop and optimize Retrieval-Augmented Generation (RAG) systems.
  • Create agent-based and tool-using AI architectures.
  • Engineer NLP pipelines for classification, summarization, and information extraction tasks.
  • Build secure, containerized APIs using FastAPI and Docker.
  • Deploy applications to Azure, including AKS or Azure Container Apps.
  • Establish CI/CD pipelines within Azure DevOps.
  • Enhance latency, observability, and optimize token costs.
  • Mentor fellow developers and contribute to architectural standards.
RequirementsRequired Experience
  • At least 8 years of software development experience.
  • Minimum of 3 years building AI/ML systems.
  • Proficient in Python development.
  • Hands-on experience with Azure OpenAI.
  • Experience constructing RAG architectures.
  • Integration of vector databases such as Azure AI Search or FAISS.
  • Deploying containerized applications on Azure platforms.
  • Building production APIs, preferably using FastAPI.
Preferred Qualifications
  • Experience with Semantic Kernel or LangChain.
  • Background in designing agent-based AI systems.
Ideal Candidate Profile
  • Has successfully transitioned AI solutions from proof-of-concept to production environments.
  • Understands the limitations of LLMs and effective mitigation strategies.
  • Approaches system architecture with scalability in mind, beyond prompt engineering.
  • Capable of working independently and providing technical leadership.
About Zvolvant

Zvolvant specializes in developing secure, enterprise-ready AI systems that accelerate decision-making and deliver tangible mission impact. The company focuses on Azure-based AI solutions tailored for federal clients.

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