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Senior Python Developer Jobs in Crystal Lake, IL

Techvilla Solutions

Senior Palantir Foundry Engineer

Itasca, IL · On-site

$101K - $139K/yr

We are seeking a Senior Product Engineer with strong expertise in Palantir Foundry, Ontology, data ... Python * Data Analysis * Dimensional Data Modeling * AI / Data Product Development Preferred * ETL ...

Hudson Manpower

Senior GenAI Engineer - W2

Schaumburg, IL · On-site

$40 - $50/hr

We are seeking a Senior GenAI Engineer with strong expertise in Artificial Intelligence, Machine ... Strong programming expertise in Python . * Hands-on experience with Hugging Face, LangChain, and ...

PB consulting

Senior AI Solutions Architect

Itasca, IL · On-site

We are seeking a Senior AI Solutions Architect to lead the architecture and development of scalable ... engineers, and lead design and code reviews. *Design and develop scalable Python APIs and ...

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All JobsPython Developer JobsSenior Python Developer JobsSenior Python Developer Jobs in Crystal Lake, IL

Senior Python Developer information

See Crystal Lake, IL salary details

$53.3K

$137.7K

$189.1K

How much do senior python developer jobs pay per year?

As of Sep 14, 2026, the average yearly pay for senior python developer in Crystal Lake, IL is $137,685.00, according to ZipRecruiter salary data. Most workers in this role earn between $117,800.00 and $158,600.00 per year, depending on experience, location, and employer.

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 are the key skills and qualifications needed to thrive as a senior Python developer?

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 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.

Are senior Python developers still in demand?

Senior Python developers remain in high demand due to the language's versatility in web development, data analysis, machine learning, and automation. Companies seek experienced developers with skills in frameworks like Django or Flask, and proficiency in cloud platforms and APIs enhances job prospects.

How much does a senior Python developer make?

A senior Python developer typically earns between $100,000 and $150,000 annually, depending on experience, location, and industry. They often possess strong skills in frameworks like Django or Flask and may hold certifications or advanced degrees that influence salary levels.

What does a senior Python developer do?

A senior Python developer designs, develops, and maintains complex software applications using Python. They often lead projects, review code, optimize performance, and collaborate with cross-functional teams, requiring strong problem-solving skills and knowledge of frameworks like Django or Flask. Additionally, they may mentor junior developers and ensure code quality through testing and best practices.

What are popular job titles related to Senior Python Developer jobs in Crystal Lake, IL?

For Senior Python Developer jobs in Crystal Lake, IL, the most frequently searched job titles are:

What cities near Crystal Lake, IL are hiring for Senior Python Developer jobs?

Cities near Crystal Lake, IL with the most Senior Python Developer job openings:

Senior Python Developer jobs near you
Infographic showing various Senior Python Developer job openings in Crystal Lake, IL as of August 2026, with employment types broken down into 1% Internship, 81% Full Time, 11% Part Time, 6% Contract, and 1% Nights. Highlights an 79% Physical, 7% Hybrid, and 14% Remote job distribution, with an average salary of $137,685 per year, or $66.2 per hour.

Senior Palantir Foundry Engineer

Saint Charles, IL • On-site

Techvilla Solutions
IT Services • 51 - 200 employees
Learn more about Techvilla Solutionsexternal

$102K - $140K/yr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

We are seeking a Senior Product Engineer with strong expertise in Palantir Foundry, Ontology, data engineering, and AI-driven product development. The role involves building scalable data products, AI-enabled applications, and enterprise analytics solutions using Palantir Foundry.

Responsibilities
  • Design and develop end-to-end data products using Palantir Foundry.
  • Build and maintain Ontology objects, relationships, and semantic models.
  • Develop scalable data pipelines and AI-powered applications.
  • Perform data analysis and develop dimensional data models.
  • Collaborate with business and technical stakeholders to translate requirements into solutions.
  • Develop, test, optimize, and maintain Foundry-based data products and workflows.
  • Lead technical discussions and contribute to Agile development processes.
Required Skills
  • Palantir Foundry
  • Palantir Ontology
  • Palantir Data Engineering
  • Python
  • Data Analysis
  • Dimensional Data Modeling
  • AI / Data Product Development
Preferred
  • ETL / Data Warehouse Testing
  • Experience with enterprise analytics and AI solutions
  • Strong problem-solving and communication skills

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