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Senior Fastapi Developer Jobs in Chicago, 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 ...

NAVA Software Solutions

Sr. AI/ML Engineer

Deerfield, IL · On-site

$106K - $145K/yr

AI/ML Engineer Senior Advisor Location: Chicago IL -Hybrid - 3 days/week onsite Duration: 6-12 ... Practical experience building and serving REST APIs for inference (TF Serving, TorchServe, FastAPI)

ITBMS Inc.

Python Developer with React

Chicago, IL · On-site

Job Title: Sr. Python with React Location: Chicago, IL Duration: Long-term Key Responsibilities ... Design, develop, and maintain backend services using Python and modern frameworks (Flask, FastAPI ...

New

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 ...

Isomer

Senior Product Engineer (Chicago)

Chicago, IL · On-site

$150K - $250K/yr

... our Senior Full Stack Product Engineer, you'll be one of the early engineers shaping both the ... or Python/FastAPI. * Workflow Automation: Familiarity with building or integrating workflow ...

OneStream

Senior AI Engineer

Chicago, IL · On-site

$107K - $147K/yr

Senior AI Engineer Location :  Hybrid, United States Employment Type : Full-Time Benefits ... Experience with webservices and API frameworks (Flask, FastAPI, etc.). * Knowledge of distributed ...

Northern Base

Senior AI ML Engineer

Chicago, IL · On-site

$120K - $130K/yr

ML engineering/Applied AI; production ML deployment; RAG and Agentic AI systems ... Python; model serving frameworks and API development such as FastAPI/MLflow; vector databases and ...

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Senior Fastapi Developer information

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$90

How much do senior fastapi developer jobs pay per hour?

As of Aug 20, 2026, the average hourly pay for senior fastapi developer in Chicago, IL is $63.59, according to ZipRecruiter salary data. Most workers in this role earn between $53.99 and $71.30 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 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.

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.

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Senior Fastapi Developer jobs near you

Senior GenAI/Python Engineer

Northern Base

Chicago, IL • Remote

$124K - $167K/yr

Full-time

Posted 17 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