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Fastapi Developer Jobs in Missouri (NOW HIRING)

3B Staffing LLC

Sr. Python Developer

Fenton, MO · Hybrid

$116K - $156K/yr

Sr. Python Developer 6-Month Contract-to-Hire Ideally hybrid 3+ days in Fenton, MO *US Citizen or ... Python, AWS/Azure, SQL, Databricks, REST APIs, microservices, Django/Flask/FastAPI, Docker ...

3B Staffing LLC

Sr. Python Developer

Fenton, MO · Hybrid

$116K - $156K/yr

Sr. Python Developer 6-Month Contract-to-Hire Ideally hybrid 3+ days in Fenton, MO *US Citizen or ... Python, AWS/Azure, SQL, Databricks, REST APIs, microservices, Django/Flask/FastAPI, Docker ...

Elite Technical

AI/ML Developer

Saint Louis, MO · On-site

... FastAPI - Prompt engineering - system prompts, few-shot, structured JSON output - Circuit breaker patterns, retry logic, resilient service design - PostgreSQL and async ORMs (SQLAlchemy async ...

Focus Financial Partners

BI & Data Engineer

Saint Louis, MO · On-site

$111K - $133K/yr

... custom React + FastAPI applications hosted natively in Snowflake). You'll use AI-assisted ... Partner with data engineers and analytics engineers who build and maintain Snowflake semantic ...

Focus Financial Partners

BI & Data Engineer

Saint Louis, MO · Hybrid

$111K - $133K/yr

... FastAPI applications hosted natively in Snowflake). You'll use AI-assisted development tools such as GitHub Copilot to accelerate delivery, and partner closely with data engineers and analytics ...

Worky

Sr. AI Developer, Engineering

Kansas City, MO · On-site

$150 - $200/hr

The Sr. AI Developer, Engineering will design, build, and deploy the core application components of ... Design and implement backend services and APIs using Python (FastAPI, Flask, or similar frameworks)

Jobgether

$80K - $110K/yr

Beyond engineering, you will provide technical leadership and make key architectural decisions ... Build scalable APIs and backend services using Python and FastAPI , ensuring reliability and ...

Third-Party Job Posts

$94K - $124K/yr

As a Senior Software Engineer on the POS team, you'll work directly across the core POS codebase: the React Native and Expo application, the Python and FastAPI backend service, the Terraform ...

Interco

Junior Software Developer

Saint Louis, MO · On-site

$60K - $65K/yr

The Software Developer will collaborate with development team members and management to ensure ... FastAPI is a plus. * Solid working knowledge of PostgreSQL (writing queries, schema design ...

Interco

Junior Software Developer

Saint Louis, MO · On-site

$60K - $65K/yr

The Software Developer will collaborate with development team members and management to ensure ... FastAPI is a plus. * Solid working knowledge of PostgreSQL (writing queries, schema design ...

Walmart

Staff, Software Engineer - Python/GenAI

Noel, MO · On-site

$110K - $220K/yr

Contribute to the design and development of platform features using microservices ( FastAPI ) and event-driven architecture ( Kafka, SSE, WebSocket )--all in Python . * Uphold engineering and ...

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Fastapi Developer information

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How much do fastapi developer jobs pay per hour?

As of Sep 8, 2026, the average hourly pay for fastapi developer in Missouri is $49.56, according to ZipRecruiter salary data. Most workers in this role earn between $37.88 and $60.67 per hour, depending on experience, location, and employer.

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.

What are the key skills and qualifications needed to thrive as a FastAPI developer?

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 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 most commonly searched types of Fastapi Developer jobs in Missouri?

The most popular types of Fastapi Developer jobs in Missouri are:

What are popular job titles related to Fastapi Developer jobs in Missouri?

For Fastapi Developer jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Fastapi Developer jobs in Missouri look for?

The top searched job categories for Fastapi Developer jobs in Missouri are:

What cities in Missouri are hiring for Fastapi Developer jobs?

Cities in Missouri with the most Fastapi Developer job openings:

Fastapi Developer jobs near you
Infographic showing various Fastapi Developer job openings in Missouri as of August 2026, with employment types broken down into 86% Full Time, 3% Part Time, and 11% Contract. Highlights an 81% Physical, 5% Hybrid, and 14% Remote job distribution, with an average salary of $103,091 per year, or $49.6 per hour.

Sr. Python Developer

Fenton, MO • Hybrid

3B Staffing LLC
Recruiting and Staffing Services • 11 - 50 employees
Learn more about 3B Staffing LLCexternal

$116K - $156K/yr

Contractor

This job post has expired 3 days ago. Applications are no longer accepted.

Job description

Sr. Python Developer

6-Month Contract-to-Hire

Ideally hybrid 3+ days in Fenton, MO

*US Citizen or GC holder*

Python, AWS/Azure, SQL, Databricks, REST APIs, microservices, Django/Flask/FastAPI, Docker, Kubernetes, CI/CD, Agile, and hands-on backend development experience.

Top 3 Skills/Must Haves

  • Sr. Python Developer
  • This is a hands on coder role - not looking for an architect
  • AWS / Azure/ SQL / Databricks
  • 10% of this job will be delegation of work, but really a hands on role
  • 24 current projects you will manage, as well as future new projects that you would lead from start to finish
  • Degree is a nice to have, but not mandatory
  • Any utilization of AI tools is a big PLUS

Job Summary
The Senior Python Developer will be responsible for designing, developing, and maintaining complex Python applications and systems, providing technical leadership and mentorship to development team members, and driving architectural decisions to support business operations and innovation, in alignment with all Company policies, procedures, key objectives and regulations.

Essential Functions

  • Design, develop, and maintain scalable Python applications, APIs, and microservices using best practices and modern design patterns.
  • Develop to our Python enterprise standards and ensure adherence to established coding conventions.
  • Quality check other developers' code to ensure compliance with our standards and best practices.
  • Lead technical architecture decisions and provide strategic guidance on system design and technology choices.
  • Interpret Business Requirements Documentation (BRD) and translate business needs into technical specifications and solutions.
  • Provide accurate level of effort estimates for development tasks and project timelines.
  • Drive projects to successful delivery on time and within budget while maintaining quality standards.
  • Write clean, efficient, and maintainable code with comprehensive documentation.
  • Conduct thorough code reviews and provide mentorship to develop team capabilities.
  • Optimize application performance, troubleshoot complex production issues, and implement robust solutions.
  • Design and implement RESTful APIs with proper authentication, error handling, and versioning.
  • Implement automated testing strategies including unit tests, integration tests, and CI/CD pipelines.
  • Collaborate with cross-functional teams to translate business requirements into technical solutions.
  • Drive continuous improvement in development processes, tooling, and team practices.
  • Ensure adherence to security best practices, data protection regulations, and coding standards.
  • Promotes and models the Company mission, vision and values through exercising sound and ethical business practices, championing all elements of diversity, equity, and inclusion (DEI) and providing high quality services and programs as they relate to clients, subcontractors, co-workers, suppliers, and the public.

Supervisory Responsibilities
May provide technical leadership and mentorship to junior developers. No direct supervisory responsibility.

Required Education, Experience and Skills

  • Bachelor's degree in Computer Science, Software Engineering, Information Systems, or related field, or equivalent experience.
  • 5+ years of professional software development experience, with at least 3+ years of focused Python development.
  • Expert-level proficiency in Python 3.x with deep understanding of language features, design patterns, and best practices.
  • Strong experience with Python web frameworks (Django, Flask, FastAPI, or similar).
  • Proven experience designing and implementing RESTful APIs and microservices architectures.
  • Strong knowledge of relational databases (PostgreSQL, MySQL, MS SQL Server) and NoSQL databases (MongoDB, Redis).
  • Experience with SDLC and CICD practices including Git, Jenkins, GitHub Actions, or similar tools.
  • Experience with containerization (Docker) and orchestration technologies (Kubernetes).
  • Proficiency with cloud platforms (AWS, Azure, or GCP) and cloud-native development.
  • Experience working in an AGILE environment with Scrum or Kanban methodologies.
  • Experience with asynchronous programming, message queues, and event-driven architectures.
  • Strong knowledge of testing frameworks (pytest, unittest) and test-driven development practices.
  • Familiarity with performance optimization, profiling, and scalability best practices.
  • Experience with version control systems and collaborative development workflows.
  • Strong analytical and problem-solving skills with attention to detail.
  • Excellent communication and documentation skills with ability to explain complex technical concepts.
  • Demonstrated leadership abilities and experience mentoring developers.
  • Ability to work independently and as part of a team.
  • Ability to manage multiple tasks and priorities in a deadline-driven environment.

Preferred Qualifications

  • Experience with data engineering tools and ETL processes.
  • Familiarity with machine learning libraries (TensorFlow, PyTorch, scikit-learn).
  • Experience with front-end technologies (React, Vue.js, JavaScript).
  • Knowledge of security best practices and application security testing.
  • Open source contributions or technical writing experience.
  • Relevant certifications (AWS Certified Developer, Python certifications).

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