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Senior Python Developer Jobs in Villa Park, IL (NOW HIRING)

Cna

Senior Software Engineer, AI/ML

Chicago, IL · Hybrid

$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 ...

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 ...

Apex Informatics

Senior Software Architect-Snowpark

Chicago, IL · On-site

$133.50K - $181.40K/yr

Proficient in SQL and the Python programming language CONTRACTOR's ROLE: Senior Software Engineer - Snowpark - Python EXPERIENCE LEVEL: Senior QUALIFICATIONS (must haves): • Excitement to learn new ...

Seven Seven Software

Senior ReactJS Developer

Chicago, IL · On-site

$56.25 - $74.25/hr

Senior Developer (Strong UI & Python Fundamentals) Position: Senior Developer Location: Chicago Employment Type: FTC Experience Level: Senior Role Overview We're looking for a front-end-leaning ...

NAVA Software Solutions

Sr. AI/ML Engineer

Deerfield, IL · On-site

$106.30K - $145.90K/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

$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 ...

Allstate

Senior AI Engineer

Chicago, IL

$126.30K - $166.50K/yr

We are seeking a Senior AI Engineer on the Enterprise Intelligence Factory team to play a ... Architect and deliver Python ‑ based microservices and batch pipelines that integrate semantic ...

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Senior Python Developer information

See Villa Park, IL salary details

$54.3K

$140.1K

$192.5K

How much do senior python developer jobs pay per year?

As of May 31, 2026, the average yearly pay for senior python developer in Villa Park, IL is $140,132.00, according to ZipRecruiter salary data. Most workers in this role earn between $119,900.00 and $161,400.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior Python Developer, and why are they important?

To thrive as a Senior Python Developer, you need advanced proficiency in Python programming, experience with software architecture, and a solid understanding of algorithms and data structures, usually backed by a degree in computer science or related fields. Familiarity with frameworks like Django or Flask, version control systems such as Git, and containerization tools like Docker are typically required, alongside knowledge of modern CI/CD pipelines. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with teams and mentor junior developers. Mastery of these skills ensures the delivery of scalable, maintainable software solutions and the ability to drive technical excellence within development teams.

What are some common challenges faced by Senior Python Developers when leading a development team?

Senior Python Developers often encounter challenges such as balancing hands-on coding with mentoring junior team members and ensuring code quality across the team. They are also responsible for making architectural decisions, which requires staying updated on best practices and emerging Python frameworks. Additionally, coordinating collaboration between cross-functional teams (like DevOps, QA, and front-end developers) can be complex, especially in agile environments where requirements may shift rapidly. Overcoming these challenges helps foster a productive and innovative team culture.

What are the main responsibilities of a Senior Python Developer?

A Senior Python Developer is responsible for designing, developing, and maintaining complex software applications using the Python programming language. They lead the technical aspects of projects, mentor junior developers, and ensure code quality through code reviews and best practices. Additionally, they collaborate with cross-functional teams to gather requirements, solve technical challenges, and deploy scalable and efficient solutions. Senior Python Developers are also expected to stay updated with the latest trends and advancements in Python and related technologies.

What is the difference between Senior Python Developer vs Python Developer?

AspectSenior Python DeveloperPython Developer
Required ExperienceTypically 5+ years, with leadership and complex project experienceUsually 1-3 years, focusing on core Python skills
ResponsibilitiesDesigning architecture, mentoring, handling complex systemsWriting code, debugging, implementing features
CertificationsOptional but beneficial (e.g., Python certifications, cloud certs)Often not required
Work EnvironmentCollaborative teams, project planning, code reviewsDevelopment-focused, task-oriented

The main difference between a Senior Python Developer and a Python Developer lies in experience, responsibilities, and leadership. Senior developers handle complex projects, mentor others, and often participate in architecture decisions, while Python Developers focus on coding and feature implementation. Both roles are essential in tech companies, but the senior role requires more experience and broader skills.

What are popular job titles related to Senior Python Developer jobs in Villa Park, IL? For Senior Python Developer jobs in Villa Park, IL, the most frequently searched job titles are:
What cities near Villa Park, IL are hiring for Senior Python Developer jobs? Cities near Villa Park, IL with the most Senior Python Developer job openings:
Senior Python Developer jobs near you
Infographic showing various Senior Python Developer job openings in Villa Park, IL as of May 2026, with employment types broken down into 82% Full Time, 12% Part Time, and 6% Contract. Highlights an 91% Physical, 5% Hybrid, and 4% Remote job distribution, with an average salary of $140,132 per year, or $67.4 per hour.
Senior Software Engineer, AI/ML

Senior Software Engineer, AI/ML

Cna

Chicago, IL • Hybrid

$72K - $141K/yr

Full-time

Posted 4 days ago

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 dutiesin accordance withdepartmental 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 thehigh leveldesign of solutions. Consults with the client area to analyze system requirements and capabilities,identifyassociated risks, and resolve problems. May act as a liaison between clients and applications area.

  • Researches andevaluatesnew and/or alternativesolutions, andrecommends the most efficient andcost effectivesolution for the systems/program design anddevelopssystem 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 toidentifyand resolve issues.

Reporting Relationship:Typically Manager or above

Skills,Knowledgeand Abilities
Key Required Skills & Experience:

  • Senior-levelproficiencyin 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

  • Expertisein Prompt Engineering Best Practices

Hands-on experience with:

  • Google Agent Development Kit

  • LangChainandLangGraph

Knowledge of Context Filtering and Prompting Security Best Practices

Familiarity with observability and debugging tools:

  • LangSmith

  • LangFuse

  • Phoenix orArize

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.Typicallyaminimumfour 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 visitcnabenefits.com.

CNA is committed to providing reasonable accommodations to qualified individuals with disabilities in the recruitment process. To request an accommodation, please contactleaveadministration@cna.com.

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