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Senior Fastapi Developer Jobs (NOW HIRING)

Amiseq Inc.

Python Developer

Mclean, VA · On-site

$51.50 - $71/hr

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 ...

Virtusa

Senior Python AI/ML Developer

Jersey City, NJ · On-site

$126K - $170K/yr

We are seeking an experienced Senior Python Engineer to design, build, and maintain scalable, high ... FastAPI) Strong understanding of RESTful API design and development Experience with relational ...

Virtusa

Senior Python AI/ML Developer

Jersey City, NJ

$126K - $170K/yr

We are seeking an experienced Senior Python Engineer to design, build, and maintain scalable, high ... FastAPI) Strong understanding of RESTful API design and development Experience with relational ...

Wise Skulls Corp.

Senior AI Engineer

Jersey City, NJ · On-site

$109K - $149K/yr

Senior AI Engineer Location: Hartford, CT | Blue Bell, PA | Jersey City, NJ | Arizona City, AZ ... Good skills on Java or Python frameworks such as Java Springboot or Python FastAPI * Strong AI ...

New

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 ...

Namely

Senior Al Engineer - India

Mountain View, CA · On-site

$120 - $160/hr

Overview We are seeking an enthusiastic Senior AI Engineer to join our team and contribute to the ... Architect, optimize, and maintain high-performance, asynchronous orchestration layers (FastAPI ...

New

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 ...

RIT Solutions, Inc.

Senior python developer

Summit, NJ · On-site

$129K - $173K/yr

RIT Solutions, Inc. is seeking a Senior Python Developer to work on a contract basis. The role ... FastAPI Framework or similar technology • Strong knowledge of PostgreSQL databases • Deep ...

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 ...

EITACIES Inc.

Senior Data Platform Engineer

Phoenix, AZ · On-site

$105K - $143K/yr

EITACIES Inc. is seeking a Senior Data Platform Engineer for an onsite role in Phoenix, AZ. The ... using FastAPI Python to support data services • Implement robust data quality and validation ...

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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 7, 2026, the average hourly pay for senior fastapi developer in the United States is $61.73, according to ZipRecruiter salary data. Most workers in this role earn between $52.40 and $69.23 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?

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
Infographic showing various Senior Fastapi Developer job openings in the United States 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 $128,400 per year, or $61.7 per hour.

Python - Senior Developers - AI Training - Boston, USA

Prolific

Remote

$124K - $167K/yr

Full-time

Re-posted 13 days ago

Job description

Job Summary:
Prolific is building the biggest pool of quality human data in the world. They are seeking Senior Python Developers to join their Expert Network to help train and evaluate cutting-edge AI models by reviewing AI-generated Python code and providing structured feedback on model performance.
Responsibilities:
• Evaluate Code Accuracy: review AI-generated Python code for functional correctness and adherence to best practices.
• Validate Logic & Reasoning: audit the step-by-step explanations provided by AI for complex algorithmic solutions to ensure they are logically sound.
• Conduct Execution Testing: execute model-generated scripts in appropriate environments to verify performance and output.
• Annotate Model Performance: identify areas where a model provides inefficient solutions, deprecated syntax, or hallucinated library methods.
• Refine Technical Logic: provide structured feedback on how models reason through backend architecture, data pipelines, or API design discussions.
Qualifications:
Required:
• Educational Background: a BSc or higher in Computer Science, Software Engineering, or closely related technical field
• Professional Experience: real world experience as a Senior Software Engineer/ Developer specializing in Python
• Coding Proficiency: ability to solve LeetCode Medium to Hard-level problems in Python independently.
• Deep Domain Knowledge: expert understanding of the GIL (Global Interpreter Lock), decorators, generators, memory management, and asynchronous patterns (asyncio, async/await).
• Code Quality: a high standard for clean code, including modularity, readability, and adherence to modern Pythonic standards (PEP 8, PEP 20).
• Attention to Detail: ability to spot subtle logical flaws, memory leaks, or security vulnerabilities in model-generated code.
• Core Language: expert mastery of Python 3.x, including type hints and modern language features.
• Frameworks: extensive experience with Django, FastAPI, or Flask.
• Testing & Tools: proficiency with pytest, unittest, coverage.py, and tox.
• Backend & API: strong understanding of RESTful APIs, GraphQL, and server-side logic in a Python environment (e.g., with FastAPI or Django REST Framework).
Company:
Building the most advanced global infrastructure for People Science. Founded in 2014, the company is headquartered in London, GBR, with a team of 51-200 employees. The company is currently Growth Stage.

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