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Fastapi Jobs in Seattle, WA (NOW HIRING)

Clearwater Analytics

Software Development Engineer

Seattle, WA · On-site

$115K - $148K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Build and maintain LLM agent pipelines, MCP integrations, and retrieval-augmented generation (RAG) systems using Python (FastAPI, LangChain) and TypeScript/React. * Use AI-assisted development tools ...

ZS

Lead AI Engineer

Bellevue, WA · On-site

$155K - $167K/yr

Build and maintain REST API Services (FastAPI etc.) to deploy LLM/RAG endpoints, integrate with product systems, and support scalable inference. * Contribute to integration of AI systems into ...

ZS Associates

Lead AI Engineer

Bellevue, WA · On-site

$115K - $152K/yr

Build and maintain REST API Services (FastAPI etc.) to deploy LLM/RAG endpoints, integrate with product systems, and support scalable inference. * Contribute to integration of AI systems into ...

Symmetry AI

Applied AI Engineer

Seattle, WA · On-site

... FastAPI, Node) to quick front-end demos or dashboards for testing and iteration. • Comfort operating in open-ended problem spaces, defining your own experiments, and driving them to working ...

Catalyst Labs

ML Engineer

Seattle, WA · On-site

Preferred : • Familiarity with FastAPI, OpenAI APIs, Baseten, LiteLLM, LiveKit, PostgreSQL, Redis, and S3 is a plus. Company : Welcome to Catalyst Labs - Powering Catalytic Growth At Catalyst Labs ...

CoreWeave

Senior Software and AI Engineer

Bellevue, WA · On-site

$137K - $181K/yr

... g., FastAPI, gRPC) and frontend technologies (e.g., React, Next), including the development of scalable backend services in Node.js and Go. • Solid familiarity with Generative AI frameworks ...

OpenAI

Software Engineer, Ads Manager

Seattle, WA · On-site

... FastAPI and TypeScript / React. • Excited by building both intuitive UI workflows and robust backend systems for external customers. • Strong product intuition and enjoy translating advertiser ...

DataRobot

Agentic AI Intern

Seattle, WA · Remote

  • Medical

  • Dental

  • Vision

Experience with API development (FastAPI, Flask) or containerization (Docker) * Prior internship, research, or project experience applying ML to real-world problems * Experience with or interest in ...

AZX

Senior Engineer (Full Stack)

Seattle, WA · On-site

$140K - $225K/yr

  • Medical

  • PTO

Able to independently and efficiently build features in TypeScript/React and backend APIs (Python/FastAPI or Express/Deno) * 5+ years of experience with demonstrated technical leadership experience

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Fastapi information

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$129.3K

$146.1K

$165.1K

How much do fastapi jobs pay per year?

As of Aug 19, 2026, the average yearly pay for fastapi in Seattle, WA is $146,112.00, according to ZipRecruiter salary data. Most workers in this role earn between $138,536.00 and $151,523.00 per year, depending on experience, location, and employer.

What is a FastAPI?

A FastAPI job typically involves developing, maintaining, and optimizing web applications and APIs using the FastAPI framework. FastAPI is a modern, high-performance web framework for Python that is designed for building APIs quickly with automatic OpenAPI generation. Professionals in this role are expected to have experience with Python, asynchronous programming, and API development, often working with databases, authentication, and cloud services.

What are the typical daily responsibilities of a FastAPI developer?

As a FastAPI Developer, your daily tasks typically include designing and implementing RESTful APIs, writing efficient and maintainable code, and performing thorough testing to ensure reliability and performance. You may also collaborate closely with frontend developers, DevOps engineers, and QA teams to integrate new features and troubleshoot issues. Regular code reviews, documentation, and participation in agile development meetings are common parts of the workday. This collaborative and dynamic environment allows you to make a direct impact on the product while growing your skills through hands-on problem-solving and teamwork.

What are the key skills and qualifications needed to thrive in the FastAPI position, and why are they important?

To thrive as a FastAPI Developer, you need strong proficiency in Python, REST API design, and knowledge of web frameworks, ideally supported by a relevant degree or industry certifications. Familiarity with tools like Docker, Git, asynchronous programming, and testing frameworks such as Pytest is often required. Excellent problem-solving skills, adaptability, and clear communication are valuable soft skills in this role. These competencies ensure robust API development, seamless collaboration, and the delivery of high-quality software solutions in agile environments.

What are the most commonly searched types of Fastapi jobs in Seattle, WA?

The most popular types of Fastapi jobs in Seattle, WA are:

What are popular job titles related to Fastapi jobs in Seattle, WA?

For Fastapi jobs in Seattle, WA, the most frequently searched job titles are:

What job categories do people searching Fastapi jobs in Seattle, WA look for?

The top searched job categories for Fastapi jobs in Seattle, WA are:

Fastapi jobs near you
Infographic showing various Fastapi job openings in Seattle, WA as of August 2026, with employment types broken down into 13% Internship, and 87% Full Time. Highlights an 75% In-person, and 25% Remote job distribution, with an average salary of $146,112 per year, or $70.2 per hour.

Software Development Engineer

Clearwater Analytics

Seattle, WA • On-site

$115K - $148K/yr

Other

Medical, Dental, Vision, Retirement, PTO

Posted 6 days ago

Job description

Clearwater Analytics is building its Generative AI engineering team, and this role sits at the center of that effort. You will design, implement, and ship LLM-powered agent tools, MCP integrations, and retrieval-augmented generation (RAG) systems that are already in production use and you will do it using AI-assisted development tools, including Claude Code, as a core part of your daily workflow. This is not exploratory AI work , it is applied engineering on real systems serving institutional investors globally. Fluency with coding assistants is not a perk here; it is a job requirement.
Responsibilities
  • Build and maintain LLM agent pipelines, MCP integrations, and retrieval-augmented generation (RAG) systems using Python (FastAPI, LangChain) and TypeScript/React.
  • Use AI-assisted development tools, including Claude Code, as a primary part of your engineering workflow for code generation, debugging, and iteration.
  • Collaborate with team members to optimize and improve existing AI-powered software applications.
  • Participate actively in code reviews, giving and receiving clear, constructive feedback.
  • Perform root-cause analyses for software issues and identify effective solutions.
  • Translate loosely defined requirements into functioning, production-ready code.
  • Assist in the creation of user stories and estimation of work for project planning.
  • Suggest design improvements demonstrating a solid understanding of system architecture.
  • Ensure software applications are scalable, reliable, and secure.
  • Document software usage, implementation, architecture, design, and APIs.
  • Write broad unit and integration tests consistently.

Required Skills
  • Fluency with AI-assisted development tools, Claude Code specifically ,as a daily engineering practice, not an occasional experiment.
  • Hands-on experience building LLM agent tools, agentic workflows, MCP integrations, or retrieval-augmented generation (RAG) systems in a production environment.
  • Production proficiency in Python 3.11 (FastAPI, LangChain) and TypeScript/React , these are the core languages of this role. Java-only backgrounds are not a fit.
  • Solid fundamentals in data structures, algorithms, and object-oriented design.
  • Enthusiasm for building in a fast-moving, AI-native SaaS environment.
  • Strong teamwork and communication skills , written and verbal.
  • Ability to manage own time and deliver results on time.
  • Commitment to continuous learning and improvement.
  • Exceptional analytical and problem-solving abilities.
  • Strong attention to detail and documentation skills.

Education & Experience
  • Bachelor's degree in Computer Science or a related field.
  • 3+ years of production software development experience
  • At least 1 year of hands-on experience with LLM, agentic, or AI/ML systems in a production or near-production environment.

What We Offer
  • Competitive base salary and performance-based bonus.
  • Comprehensive health, dental, and vision benefits.
  • Flexible work arrangements, hybrid and remote options available.
  • Access to cutting-edge AI tools and infrastructure as part of your day-to-day work.
  • A collaborative, high-trust engineering culture that values craft, speed, and continuous learning.

Equal Opportunity Employer
Clearwater Analytics is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status, or any other characteristic protected by applicable law.
Salary Range
$115,119.60 - $148,350.00
This is the pay range the Company believes it will pay for this position at the time of this posting. Consistent with applicable law, compensation will be determined based on relevant experience, other job-related qualifications/skills, and geographic location (to account for comparative cost of living). The Company reserves the right to modify this pay range at any time. For this role, benefits include: health/vision/dental insurance, 401(k), PTO, parental leave, and medical leave, STD/LTD insurance benefits. Clearwater Analytics is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.

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