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Senior Fastapi Jobs in Plainfield, IL (NOW HIRING)

Northern Base

Senior GenAI/Python Engineer

Chicago, IL · Remote

$124K - $167K/yr

Hiring Alert | Senior GenAI/Python Engineer Location: Chicago, IL (Remote) Employment Type ... FastAPI / Flask / Django * Async Python * Parallel LLM & API Orchestration * SQL & Large Analytical ...

Swift Hire LLC

Senior Software Engineer(Python)

Chicago, IL · On-site

$126K - $166K/yr

Title - Senior Software Engineer(Python) Senior Software Engineer with expertise in Python, Data ... Design, build, and maintain backend services and APIs using Python (FastAPI, Flask, Django)

Northern Base

Senior GenAI/Python Engineer

Chicago, IL · Remote

$124K - $167K/yr

Senior GenAI/Python Engineer Location: Remote (USA) Employment Type: Full-Time Visa Type: USC / GC ... FastAPI, Flask, or Django frameworks ✔ Experience with asynchronous Python programming and ...

Northern Base

Senior AI ML Engineer

Chicago, IL · On-site

$120K - $130K/yr

Python; model serving frameworks and API development such as FastAPI/MLflow; vector databases and embeddings; LangChain/LlamaIndex or similar orchestration; CI/CD; containerization; cloud deployment ...

Site Technologies

Senior Backend Software Engineer

Chicago, IL · On-site +1

$165K - $195K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

SITE Technologies is seeking a thoughtful and versatile Senior Backend Software Engineer to help ... Design, develop, and maintain core backend APIs and services, primarily in Python and FastAPI

P2P

Senior Software Engineer, Treasury (Ruby/Python)

Chicago, IL · On-site

$175 - $275/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

DRW has an opening for a Senior Software Engineer on its Treasury Development team. Treasury ... Full-stack development in Python (FastAPI) and/or Ruby (Rails) * Strong relational data modeling ...

DRW

Senior Software Engineer, Treasury (Ruby/Python)

Chicago, IL · On-site

$175K - $275K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

DRW has an opening for a Senior Software Engineer on its Treasury Development team. Treasury ... Full-stack development in Python (FastAPI) and/or Ruby (Rails) * Strong relational data modeling ...

Tata Consultancy Service Limited

Senior AI ML Engineer

Chicago, IL · On-site

$120K - $130K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Python; model serving frameworks and API development such as FastAPI/MLflow; vector databases and embeddings; LangChain/LlamaIndex or similar orchestration; CI/CD; containerization; cloud deployment ...

OneStream

Senior AI Engineer

Chicago, IL · On-site

$130 - $190/hr

  • Medical

  • Life

  • Retirement

  • PTO

Summary As a Senior AI Engineer you will be a critical member in executing our AI development ... Experience with webservices and API frameworks (Flask, FastAPI, etc.). * Knowledge of distributed ...

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All JobsFastapi JobsSenior Fastapi JobsSenior Fastapi Jobs in Plainfield, IL

Senior Fastapi information

See Plainfield, IL salary details

$24.4K

$78.3K

$159.4K

How much do senior fastapi jobs pay per year?

As of Aug 15, 2026, the average yearly pay for senior fastapi in Plainfield, IL is $78,256.00, according to ZipRecruiter salary data. Most workers in this role earn between $40,400.00 and $100,400.00 per year, depending on experience, location, and employer.

Is senior FastAPI in high demand?

Senior FastAPI developers are in high demand due to the framework's popularity for building fast, scalable APIs with Python. Companies seek experienced professionals skilled in asynchronous programming, RESTful API design, and deployment with tools like Docker and Kubernetes, making this a valuable skill set in the current job market.

Do any big companies use FastAPI?

Several large companies and tech organizations use FastAPI for building high-performance APIs due to its speed and ease of use. Notable examples include Microsoft, Uber, and Netflix, which leverage FastAPI alongside other modern Python frameworks for scalable backend development.

What is the salary of a senior Fastapi developer?

The salary of a senior Fastapi developer typically ranges from $100,000 to $150,000 annually, depending on experience, location, and company size. Strong knowledge of Python, RESTful APIs, and cloud deployment can influence compensation levels.

What is the difference between Senior Fastapi vs Backend Developer?

AspectSenior FastapiBackend Developer
Primary FocusBuilding APIs with Fastapi frameworkDeveloping server-side logic across various frameworks
Required SkillsPython, Fastapi, async programming, REST API designPython, multiple frameworks (Django, Flask, Fastapi), database management
Work EnvironmentTech companies, startups, cloud-based projectsVaried industries, enterprise and startup environments
CertificationsPython certifications, Fastapi experiencePython certifications, general backend development certifications

Senior Fastapi specialists focus specifically on building high-performance APIs using the Fastapi framework, often requiring expertise in async programming and REST API design. Backend Developers have a broader scope, working across multiple frameworks and technologies to develop server-side logic. While both roles require Python skills, Senior Fastapi roles are more specialized, whereas Backend Developers have a wider range of tools and responsibilities.

What job categories do people searching Senior Fastapi jobs in Plainfield, IL look for?

The top searched job categories for Senior Fastapi jobs in Plainfield, IL are:

What cities near Plainfield, IL are hiring for Senior Fastapi jobs?

Cities near Plainfield, IL with the most Senior Fastapi job openings:

Senior Fastapi jobs near you

Senior GenAI/Python Engineer

Northern Base

Chicago, IL • Remote

$124K - $167K/yr

Full-time

Posted 11 days ago

Job description

Hiring Alert | Senior GenAI/Python Engineer

Location: Chicago, IL (Remote)
Employment Type: Full-Time
Experience Required: 7–9 Years
Visa Type: USC / GC Only

Must-Have Skills:
  • Advanced Python Development
  • Production-Grade Python Coding
  • GenAI / LLM Application Development
  • OpenAI / Azure OpenAI / Anthropic / AWS Bedrock
  • Agentic AI Development
  • LLM-Powered Agents
  • LangChain / LangGraph / LlamaIndex
  • Intent Classification
  • Agentic Extraction & Multi-Step Orchestration
  • Function Calling & Tool Use
  • Prompt Engineering
  • Structured LLM Output
  • JSON Schema & Pydantic
  • RAG & Vector Search
  • Embeddings & Chunking
  • Hybrid Search & Reranking
  • Entity Resolution & Fuzzy Matching
  • Confidence Scoring & Disambiguation
  • Vector Databases: pgvector / Pinecone / Weaviate / OpenSearch
  • FastAPI / Flask / Django
  • Async Python
  • Parallel LLM & API Orchestration
  • SQL & Large Analytical Datasets
  • Azure / AWS / GCP
  • Pytest & Test Automation
  • Git & CI/CD
  • Docker
  • Guardrails & Validation
  • GenAI Evaluation & Regression Testing
Preferred Experience:
  • 5+ years of advanced professional Python development
  • 1.5+ years of hands-on production GenAI / LLM application development
  • Experience building domain-specific agents and agentic workflows
  • Experience developing natural-language-to-structured JSON payload pipelines
  • Strong experience with structured output enforcement and JSON schema validation
  • Experience implementing retry, repair, validation, and error-handling strategies for LLM outputs
  • Experience designing RAG and semantic search solutions
  • Experience with entity resolution, fuzzy matching, confidence thresholds, and disambiguation
  • Experience building FastAPI-based microservices
  • Experience with asynchronous Python and parallel API/LLM calls
  • Experience developing evaluation harnesses, test sets, and regression frameworks
  • Experience with metadata/catalog services and entitlement-aware data access
  • Experience collaborating with platform, data, service, and product teams
  • Strong experience with code reviews, design discussions, and production readiness reviews
  • Excellent technical documentation skills including Confluence, ADRs, sequence diagrams, and flow diagrams
  • Strong communication and stakeholder collaboration skills
Education:

Bachelor’s Degree in Computer Science, Information Technology, Engineering, or related field preferred.

Tech Stack:

Python | GenAI | LLM | OpenAI | Azure OpenAI | Anthropic | AWS Bedrock | LangChain | LangGraph | LlamaIndex | Agentic AI | RAG | Vector Search | Embeddings | Pinecone | pgvector | Weaviate | OpenSearch | FastAPI | Async Python | Pydantic | JSON Schema | Function Calling | Prompt Engineering | Guardrails | Pytest | Git | CI/CD | Docker | SQL | Azure | AWS | GCP