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Online Fastapi Developer Jobs (NOW HIRING)

ZS

Lead AI Engineer

Bellevue, WA · On-site

$155K - $167.75K/yr

Conduct LLM evaluation using automated and human-in-the-loop techniques (offline + online ... Build and maintain REST API Services (FastAPI etc.) to deploy LLM/RAG endpoints, integrate with ...

Ritchie Bros.

Senior Staff Software Engineer

Norwalk, CT · On-site

$155.48K - $194.30K/yr

Architect and develop high-concurrency backend services in Python (FastAPI/Django) to handle core ... Xcira, a leader in live simulcast auction technologies; and Veritread, an online marketplace for ...

Ritchie Bros.

Senior Staff Software Engineer

Norwalk, CT

$123.50K - $162.80K/yr

Architect and develop high-concurrency backend services in Python (FastAPI/Django) to handle core ... Xcira, a leader in live simulcast auction technologies; and Veritread, an online marketplace for ...

Honeywell

Sr Advanced AI Platform Engineer

Atlanta, GA · On-site

$117.90K - $155.40K/yr

Develop high-performance, production-ready Python APIs using FastAPI to serve as the primary ... or managed online endpoints Data & Knowledge Engineering * Experience building pipelines to ...

Reed

$53 - $70.25/hr

Here at Reed.co.uk, we do this by connecting people to a world of career opportunities online. We ... Python (including frameworks like Django, Flask, or FastAPI) * PostgreSQL and relational database ...

Rippling

Staff Software Engineer - AI

San Francisco, CA · On-site

$180K - $315K/yr

We operate on a modern Growth Services infrastructure built on FastAPI, Kubernetes, Databricks ... Solid understanding of feature stores, experiment tracking, and online/offline evaluation ...

Honeywell

Sr Advanced AI Platform Engineer

Atlanta, GA · On-site

$117.80K - $155.30K/yr

Develop high-performance, production-ready Python APIs using FastAPI to serve as the primary ... or managed online endpoints Data & Knowledge Engineering * Experience building pipelines to ...

Honeywell

Sr Advanced AI Platform Engineer

Atlanta, GA · On-site

$117.80K - $155.30K/yr

Develop high-performance, production-ready Python APIs using FastAPI to serve as the primary ... or managed online endpoints Data & Knowledge Engineering * Experience building pipelines to ...

Crox Consulting Inc

Front End Web Developer

New York, NY · On-site

$60 - $63/hr

... online customer experiences • Experience building web-based applications and APIs • Solid ... and FastAPI Frameworks • Experienced and/or Certified AWS Cloud Developer • Experienced ...

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How much do online fastapi developer jobs pay per hour?

As of Jun 3, 2026, the average hourly pay for online fastapi developer in the United States is $45.29, according to ZipRecruiter salary data. Most workers in this role earn between $23.56 and $54.81 per hour, depending on experience, location, and employer.
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Online Fastapi Developer jobs near you
Infographic showing various Online Fastapi Developer job openings in the United States as of May 2026, with employment types broken down into 3% Locum Tenens, 96% Full Time, and 1% Temporary. Highlights an 77% Physical, 1% Hybrid, and 22% Remote job distribution, with an average salary of $94,200 per year, or $45.3 per hour.

Lead AI Engineer

ZS

Bellevue, WA • On-site

$155K - $167.75K/yr

Full-time

Posted 6 days ago

Job description

ZS is a place where passion changes lives. As a management consulting and technology firm focused on improving life and how we live it, we transform ideas into impact by bringing together data, science, technology and human ingenuity to deliver better outcomes for all. Here you'll work side-by-side with a powerful collective of thinkers and experts shaping life-changing solutions for patients, caregivers and consumers, worldwide. ZSers drive impact by bringing a client-first mentality to each and every engagement. We partner collaboratively with our clients to develop custom solutions and technology products that create value and deliver company results across critical areas of their business. Bring your curiosity for learning, bold ideas, courage and passion to drive life-changing impact to ZS.
What you'll do: Lead AI Engineer in the Platforms and Products will...
We are seeking a highly motivated Applied AI Engineer with a strong foundation in Machine Learning and a deep interest in Large Language Models (LLMs) and Generative AI. This role focuses on building, optimizing, and evaluating production-grade LLM systems, including Retrieval-Augmented Generation (RAG), fine-tuning workflows, and scalable inference pipelines.
  • Design and implement LLM-powered applications using state-of-the-art transformer models.
  • Build and optimize RAG pipelines using embeddings, chunking strategies, and vector search.
  • Experiment with prompt engineering, structured outputs (JSON schemas/function calling), and tool-augmented LLMs (agents/workflows).
  • Fine-tune models using techniques such as LoRA, PEFT, and instruction tuning.
  • Develop and evaluate embedding models for similarity search and semantic retrieval.
  • Conduct LLM evaluation using automated and human-in-the-loop techniques (offline + online).
  • Optimize inference workflows for latency, GPU utilization, and cost efficiency (quantization, batching, caching).
  • 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 production software environments (CI/CD, monitoring, reliability).
  • Research and prototype cutting-edge approaches in Generative AI and share learnings with the team.

What you'll bring:
  • A master's or bachelor's degree in Computer Science or related field from a top university
  • 4+ years' hands-on experience in Machine Learning (ML) with production LLM systems
  • Good fundamentals of machine learning, deep learning and fine tuning models (LLM) including:
    • Understanding of transformer architectures
    • Prompt engineering expertise
    • Embeddings and vector search
  • Experienced in backend API design with FastAPI, async patterns, rate limiting
  • Experience with vector DB including:
    • Pinecone, Weaviate, or Chroma
    • Embedding storage and similarity search
    • Hybrid search implementations
  • Strong programming expertise in Python is must including:
    • Async programming (asyncio, async/await)
    • Type hints and Pydantic
    • SOLID principles and design patterns
  • Experience in ML Ops to measure and track model performance including:
    • MLFlow for model tracking
    • Langfuse for LLM observability (strongly preferred)
    • Model versioning and A/B testing
  • Experience in working with NLP & computer vision
  • Fluency in English
  • Client-first mentality
  • Intense work ethic
  • Collaborative spirit and problem-solving approach

At ZS, your growth matters. We offer a comprehensive total rewards package that supports your health and well-being, financial future, time away, and professional development. With robust skills-building programs, multiple career progression paths, internal mobility, and a deeply collaborative culture, you'll have the opportunity to do meaningful work, expand your capabilities, and thrive as part of a global community. For details on total rewards in United States, visit ZS US office locations | Where we work | ZS.

About ZS

Sourced by ZipRecruiter

Industry

Business management consulting

Company size

10,000+ Employees

Headquarters location

Evanston, IL, US

Year founded

1983

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