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Fastapi Developer Jobs in Ashburn, VA (NOW HIRING)

System One

Senior Full Stack Developer

Mclean, VA · Remote

Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ... engineers, and business stakeholders Creating demonstrations, prototypes, and technical solutions ...

System One

Senior Full Stack Developer

Mclean, VA · Remote

Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI ... engineers, and business stakeholders Creating demonstrations, prototypes, and technical solutions ...

GRVTY

Full Stack Developer

Chantilly, VA

We embed skilled Data Engineers, Data Scientists, and ETL Developers directly into intelligence ... FastAPI; including developing associated testing (unit and integration) * 2-3 years of with SQL ...

Cornerstone Defense

Python Developer

Chantilly, VA · On-site

$51.50 - $71/hr

Job #3456 Python Developer: w orks as part of a team to implement functionality as part of multiple ... Experience with API development in Python using Python libraries such as FastAPI * Experience with ...

GRVTY

Full Stack Developer

Mclean, VA · On-site

... fastapi) • Strong experience with TypeScript/JavaScript (Vue.js) and Tailwindcss • Experience with DevOps (CDKTF/terraform) • Experience with relational database design and SQL query workflows ...

Accenture Federal Services

Full Stack Developer

Herndon, VA · On-site

$111K - $221K/yr

Experience with FastAPI * Experience with Python software development tooling: uv, ruff, pyright ... AWS developer certified Security clearance : * Active TS/SCI with Poly clearance is required Full ...

Technology Ventures

Senior GenAI Engineer

Reston, VA · On-site

$108K - $149K/yr

... modern DevOps practices . This role involves building end-to-end AI systems that integrate with ... Build scalable backend services using Python, FastAPI, and Pydantic . Develop and deploy LLM ...

Booz Allen Hamilton

Full Stack Developer

Chantilly, VA · On-site

... FastAPI, RESTful APIs, and microservices • 6+ years of experience designing, modifying, developing, writing, and implementing software programming applications using agile methods • Experience ...

Interon IT Solutions

AI/ML Engineer

Reston, VA · On-site

AI/ML Engineer (Python, AWS, GenAI) Location: Reston, VA (In-person interviews required) Candidate ... Develop scalable, high-performance Python microservices using FastAPI/Flask for data pipelines ...

Accenture Federal Services

Full Stack Developer

Herndon, VA · On-site

$111K - $221K/yr

Experience with FastAPI * Experience with Python software development tooling: uv, ruff, pyright ... AWS developer certified Security clearance : * Active TS/SCI with Poly clearance is required Full ...

VTG

Full Stack Developer

Chantilly, VA · On-site

... FastAPI. * Experience developing and maintaining unit and integration tests. * 2-3 years of ... Ability to work collaboratively with a Lead Developer and other technical team members.

Booz Allen Hamilton

Full Stack Developer

Chantilly, VA · On-site

... FastAPI, RESTful APIs, and microservices • 6+ years of experience designing, modifying, developing, writing, and implementing software programming applications using agile methods • Experience ...

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All JobsFastapi Developer JobsFastapi Developer Jobs in Ashburn, VA

Fastapi Developer information

See Ashburn, VA salary details

$17

$54

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How much do fastapi developer jobs pay per hour?

As of Jul 13, 2026, the average hourly pay for fastapi developer in Ashburn, VA is $54.03, according to ZipRecruiter salary data. Most workers in this role earn between $41.30 and $66.11 per hour, depending on experience, location, and employer.

What are some common challenges FastAPI Developers face when integrating third-party services or APIs?

FastAPI Developers often encounter challenges when integrating third-party services, such as handling authentication protocols (like OAuth2), ensuring compatibility between JSON schemas, and managing asynchronous calls to avoid performance bottlenecks. It’s also common to troubleshoot and adapt to inconsistencies in external API documentation or rate limits. Collaborating closely with frontend teams and DevOps professionals helps streamline these integrations, ensuring robust, scalable API solutions.

What is the difference between Fastapi Developer vs Backend Developer?

AspectFastapi DeveloperBackend Developer
Required SkillsPython, Fastapi, REST APIs, async programmingMultiple languages (Python, Java, Node.js), REST/SOAP APIs, databases
Work EnvironmentWeb development, API-focused projects, microservicesBroader software development, server-side logic, database management
Industry UsageTech startups, SaaS, API-driven servicesEnterprise, e-commerce, finance, various industries

Fastapi Developers specialize in building high-performance APIs using Python and Fastapi, often within microservices architectures. Backend Developers have a broader scope, working with multiple languages and technologies to develop server-side applications across various industries. While Fastapi Developers focus on API efficiency, Backend Developers handle comprehensive backend systems.

What are the key skills and qualifications needed to thrive as a FastAPI Developer, and why are they important?

To thrive as a FastAPI Developer, you need strong proficiency in Python programming, RESTful API design, and experience with FastAPI, often supported by a background in computer science or related fields. Familiarity with tools like SQL/NoSQL databases, Docker, and cloud platforms, as well as knowledge of asynchronous programming and API documentation tools like Swagger, is typically required. Excellent problem-solving skills, attention to detail, and effective communication set outstanding FastAPI developers apart. These skills are crucial for building reliable, high-performance APIs that meet modern application demands and facilitate seamless team collaboration.

What is a FastAPI Developer?

A FastAPI Developer is a software engineer who specializes in building web applications and APIs using the FastAPI framework, which is a modern, fast (high-performance) web framework for Python. FastAPI Developers are responsible for designing, developing, and maintaining backend services and APIs that are efficient, robust, and scalable. They often work with databases, authentication, and deployment processes, and ensure that the API endpoints adhere to best practices for security and performance. Their work is crucial for enabling smooth communication between front-end applications and backend systems.
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Fastapi Developer jobs near you
Senior Full Stack Developer

Senior Full Stack Developer

System One

Mclean, VA • Remote

Contractor

Medical, Dental, Vision, Life, Retirement

Posted 21 days ago

Job description

Senior Full Stack Developer Remote

We are seeking a Senior Full Stack Developer to support a federal cloud modernization and product development effort focused on scalable, secure, cloud-native applications hosted in AWS.

This is a remote opportunity supporting ongoing application modernization, technology migration, and product enhancement initiatives. The Senior Full Stack Developer will collaborate with client stakeholders, solution architects, product owners, UX designers, platform engineers, business analysts, and cross-functional technical teams to design, build, test, and deploy resilient software solutions.

The ideal candidate has strong hands-on experience with Python and JavaScript, modern web frameworks, RESTful APIs, microservices, cloud-native development, and AWS-based application delivery. Preferred experience includes Django and Vue.js, though equivalent experience with Flask, FastAPI, Falcon, SQLAlchemy, React, Svelte, Angular, or similar technologies may also be considered.

Responsibilities include:

Designing, developing, testing, and deploying full-stack applications in an AWS cloud environment

Building secure, scalable, and resilient software solutions using Python, JavaScript, and modern frameworks

Developing RESTful APIs, microservices, and API-first application components

Supporting modernization, migration, and enhancement of existing applications and platforms

Collaborating with architects, product owners, UX designers, platform engineers, and business stakeholders

Creating demonstrations, prototypes, and technical solutions to address client needs

Participating in Agile development activities, code reviews, troubleshooting, and deployment support

Contributing to best practices around cloud-native development, containerization, security, performance, and maintainability

Required Qualifications:

6+ years of relevant full-stack software development experience

Bachelor’s degree preferred; 10 years of relevant experience may be considered in lieu of a degree

Strong professional experience with Python

Strong professional experience with JavaScript and modern frontend development

Experience developing RESTful APIs and working with microservices or API-first architectures

Experience building or supporting cloud-native applications in AWS

Experience with modern development practices, version control, testing, and Agile delivery

Ability to collaborate with technical and non-technical stakeholders in a remote, client-facing environment

Preferred Qualifications:

Experience with Django and Vue.js

Experience with Flask, FastAPI, Falcon, SQLAlchemy, React, Svelte, or Angular

Experience with PostgreSQL or other relational databases

Experience with Docker, Kubernetes, ECS, or other containerization/orchestration technologies

Experience supporting federal, public sector, financial services, or lending-related platforms

Experience with application modernization, cloud migration, or product development initiatives

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

#M1 #LI-CS1 Ref: #851-Rockville-S1

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