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Sr Python Developer Jobs in Chicago, IL (NOW HIRING)

CNA

Senior Software Engineer, AI/ML

Chicago, IL · On-site

$72K - $141K/yr

We are looking for a highly skilled Senior Python AI Developer with deep expertise in building intelligent agents using Google Vertex AI, particularly with Gemini or OpenAI models. The ideal ...

Tror AI for everyone

AI Developer

Mettawa, IL · On-site

$80/hr

Senior AI Developer Location: Mettawa, IL (Onsite) Rate: $80/hr on C2C Design, build, and deploy ... Expert-level proficiency in Python and related AI/ML frameworks (e.g., PyTorch, TensorFlow ...

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 ... Strong Python engineering background with ML/DL frameworks: TensorFlow, PyTorch, Keras, OpenCV

Quanta Search

Senior Strategy Developer

Chicago, IL · On-site

$56.25 - $74.25/hr

How You Can Make an Impact As a Senior Strategy Developer on one of our growing high-frequency ... Prior scripting experience with Python highly preferred * Experience with kdb+ or another time ...

Quanta Search

Senior Strategy Developer

Chicago, IL · On-site

$56.25 - $74.25/hr

How You Can Make an Impact As a Senior Strategy Developer on one of our growing high-frequency ... Prior scripting experience with Python highly preferred * Experience with kdb+ or another time ...

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All JobsSr Python Developer JobsSr Python Developer Jobs in Chicago, IL

Sr Python Developer information

See Chicago, IL salary details

$56.7K

$146.4K

$201K

How much do sr python developer jobs pay per year?

As of Jul 8, 2026, the average yearly pay for sr python developer in Chicago, IL is $146,371.00, according to ZipRecruiter salary data. Most workers in this role earn between $125,300.00 and $168,600.00 per year, depending on experience, location, and employer.

What are the typical daily responsibilities of a Sr Python Developer?

As a Sr Python Developer, your daily tasks often include designing and coding complex features, reviewing code from team members, and troubleshooting bugs or performance issues. You may also lead technical discussions, contribute to architectural decisions, and collaborate closely with product managers, QA engineers, and other developers. Mentoring junior team members and staying up to date with best practices or new technologies is also a regular part of the role. This combination of hands-on engineering and leadership responsibilities ensures both the quality of the codebase and the continual growth of the team.

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

To thrive as a Sr Python Developer, you need expert proficiency in Python programming, strong problem-solving skills, and a solid background in computer science or related fields, often demonstrated by several years of relevant experience. Familiarity with frameworks like Django or Flask, version control systems such as Git, and sometimes certifications such as PCEP or PCAP are typically valued. Strong communication, leadership, and the ability to mentor junior developers are standout soft skills for this position. These combined proficiencies ensure that Sr Python Developers can build robust solutions, contribute to architectural decisions, and drive team success in complex technical environments.

What is a Sr Python Developer job?

A Sr Python Developer is an experienced software engineer who specializes in designing, developing, and maintaining applications using Python. They are responsible for writing clean, efficient, and scalable code while also mentoring junior developers and collaborating with cross-functional teams. Their role often includes optimizing application performance, integrating third-party services, and ensuring best coding practices. Additionally, they may work with frameworks like Django or Flask and databases such as PostgreSQL or MongoDB to build robust backend systems.

What are popular job titles related to Sr Python Developer jobs in Chicago, IL? For Sr Python Developer jobs in Chicago, IL, the most frequently searched job titles are:
What job categories do people searching Sr Python Developer jobs in Chicago, IL look for? The top searched job categories for Sr Python Developer jobs in Chicago, IL are:
Sr Python Developer jobs near you
Infographic showing various Sr Python Developer job openings in Chicago, IL as of July 2026, with employment types broken down into 26% Full Time, and 74% Contract. Highlights an 91% In-person, and 9% Remote job distribution, with an average salary of $146,371 per year, or $70.4 per hour.
Senior Software Engineer, AI/ML

Senior Software Engineer, AI/ML

CNA

Chicago, IL • On-site

$72K - $141K/yr

Full-time

Re-posted yesterday

Job description

You have a clear vision of where your career can go. And we have the leadership to help you get there. At CNA, we strive to create a culture in which people know they matter and are part of something important, ensuring the abilities of all employees are used to their fullest potential.
We are looking for a highly skilled Senior Python AI Developer with deep expertise in building intelligent agents using Google Vertex AI, particularly with Gemini or OpenAI models. The ideal candidate has a strong foundation in Large Language Models and understands how they work under the hood, combined with experience in evaluating model performance through structured testing methodologies. This role requires proficiency in the technical aspects of agent development while adhering to best practices in prompt engineering, context filtering, and security-aware prompting. The candidate should also have hands-on experience with modern agent frameworks and observability tools, ensuring robust, scalable, and reliable AI solutions.
JOB DESCRIPTION:
Essential Duties & Responsibilities:
Performs a combination of duties in accordance with departmental guidelines:
  • Evaluates defined client area requirements and processes (e.g., new enhancements or maintenance) and detailed designs and develops moderate to complex application program solutions.
  • Ensures quality of application solutions by performing code review with peers, creating documentation, implementing code, verifying program logic, performing defect root cause analysis, and completing unit and integration testing. Participates in systems testing with other IT staff.
  • Assists with the high level design of solutions. Consults with the client area to analyze system requirements and capabilities, identify associated risks, and resolve problems. May act as a liaison between clients and applications area.
  • Researches and evaluates new and/or alternative solutions, and recommends the most efficient and cost effective solution for the systems/program design and develops system specifications and procedures. May include integrating vendor applications and consulting resources into existing applications and resources.
  • In conjunction with operations area technical staff, supports the implementation of the application into production and testing environments. May confer with technical personnel to identify and resolve issues.

Reporting Relationship: Typically Manager or above
Skills, Knowledge and Abilities
Key Required Skills & Experience:
  • Senior-level proficiency in Python, with experience in AI/ML development

  • Strong understanding of Large Language Models (LLMs) and their operational mechanics

  • Experience developing AI Agents on Google Vertex AI using Gemini or OpenAI

  • Expertise in Prompt Engineering Best Practices

Hands-on experience with:
  • Google Agent Development Kit

  • LangChain and LangGraph

Knowledge of Context Filtering and Prompting Security Best Practices
Familiarity with observability and debugging tools:
  • LangSmith

  • LangFuse

  • Phoenix or Arize

Experience with Eval AI Testing and model evaluation workflows
Education and Experience
1. Bachelor's degree in Computer Science, or related discipline, or equivalent work experience.
2. Typically a minimum four years of application program development experience.
3. Applicable certificates preferred.
#LI-MR1
#LI-Hybrid
In certain jurisdictions, CNA is legally required to include a reasonable estimate of the compensation for this role. In District of Columbia, California, Colorado, Connecticut, Illinois, Maryland, Massachusetts, New York and Washington, the national base pay range for this job level is $72,000 to $141,000 annually. Salary determinations are based on various factors, including but not limited to, relevant work experience, skills, certifications and location. CNA offers a comprehensive and competitive benefits package to help our employees - and their family members - achieve their physical, financial, emotional and social wellbeing goals. For a detailed look at CNA's benefits, please visit cnabenefits.com.
CNA is committed to providing reasonable accommodations to qualified individuals with disabilities in the recruitment process. To request an accommodation, please contact leaveadministration@cna.com.

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