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Senior Python Data Analysis Jobs in Illinois (NOW HIRING)

AgileEngine

Senior Data Engineer ID75059

Irving, IL · On-site +1

$92K - $125K/yr

You will implement Python-based ETL/ELT pipelines, orchestrate workflows with Airflow, develop ... advanced analytics; - Act as a technical consultant for stakeholders and leadership to gather ...

World's Finest Chocolate

Senior Data Analyst

Chicago, IL · On-site

$110K - $130K/hr

World's Finest Chocolate is seeking a highly skilled and motivated Senior Data Analyst to join our ... Strong proficiency in data analysis tools and programming languages such as Python, R, SQL, and ...

World S Finest Chocolate

Senior Data Analyst

Chicago, IL · On-site

$88K - $111K/yr

World's Finest Chocolate is seeking a highly skilled and motivated Senior Data Analyst to join our ... Strong proficiency in data analysis tools and programming languages such as Python, R, SQL, and ...

World's Finest Chocolate

Senior Data Analyst

Chicago, IL · On-site

$110K - $130K/yr

World's Finest Chocolate is seeking a highly skilled and motivated Senior Data Analyst to join our ... Strong proficiency in data analysis tools and programming languages such as Python, R, SQL, and ...

North American Lighting

Data Analyst - Sr

Paris, IL · On-site

$68K - $94K/yr

Job Summary The Senior Data Analyst plays a pivotal role in our ongoing digital transformation by ... Working knowledge of Python for analysis; exposure to Spark/Databricks is a plus. 4. Soft Skills: a.

Wintrust

Senior Tech Data Analyst

Rosemont, IL · On-site

$86K - $109K/yr

Advanced Data Analysis * Analyze large, complex structured data sets (example - transactions ... Preferred * Familiarity with NLP tools or frameworks (example - Python, NLP libraries etc)

North American Lighting

Data Analyst - Sr

Paris, IL · On-site +1

$68K - $94K/yr

Job Summary The Senior Data Analyst plays a pivotal role in our ongoing digital transformation by ... Working knowledge of Python for analysis; exposure to Spark/Databricks is a plus. 4. Soft Skills: a.

Wintrust

Senior Tech Data Analyst

Rosemont, IL

$86K - $109K/yr

Advanced Data Analysis * Analyze large, complex structured data sets (example - transactions ... Preferred * Familiarity with NLP tools or frameworks (example - Python, NLP libraries etc)

Centuria

Data Analyst

Scott Air Force Base, IL

... Python or R). * Strong proficiency with statistical analysis and data analysis tools/techniques. * Experience building data pipelines, ontologies, and analytic applications in Palantir Foundry.

TransUnion

Senior Data Analyst

Chicago, IL

$90K - $150K/yr

Utilize tools to query, extract and transform large datasets using SQL, R, Python, Mongo DB ... TransUnion's Internal Job Title: Sr Consultant, Data Analysis Company: TransUnion LLC

Centuria

IL · On-site

... Python or R). * Strong proficiency with statistical analysis and data analysis tools/techniques. * Experience building data pipelines, ontologies, and analytic applications in Palantir Foundry.

Transunion

Senior Data Analyst

Chicago, IL · On-site

$90K - $150K/yr

Utilize tools to query, extract and transform large datasets using SQL, R, Python, Mongo DB ... TransUnion's Internal Job Title: Sr Consultant, Data Analysis Company: TransUnion LLC

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All JobsPython Data Analysis JobsSenior Python Data Analysis JobsSenior Python Data Analysis Jobs in Illinois

Senior Python Data Analysis information

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

To thrive as a Senior Python Data Analyst, you need an in-depth understanding of data analysis, statistical modeling, and advanced Python programming, typically supported by a degree in a quantitative field. Proficiency with data analysis libraries (like pandas, NumPy, and SciPy), visualization tools (such as Matplotlib and Seaborn), and experience with SQL databases are essential, and certifications like Microsoft Certified: Data Analyst Associate can be beneficial. Strong problem-solving abilities, effective communication, and the capacity to distill complex data insights for stakeholders are critical soft skills. These competencies enable you to extract actionable insights from large datasets, drive data-informed decision-making, and collaborate effectively across teams.

What is the difference between Senior Python Data Analysis vs Data Scientist?

AspectSenior Python Data AnalysisData Scientist
Required SkillsPython, SQL, data visualization, statistical analysisPython, R, machine learning, statistical modeling
Work EnvironmentData analysis teams, business unitsResearch, product development, analytics teams
Industry UsageBusiness intelligence, finance, marketingTech, healthcare, finance, research
CertificationsPython certifications, data analysis coursesData science certifications, machine learning courses

While both roles involve Python and data handling, Senior Python Data Analysts focus on interpreting data and creating reports for business decisions, whereas Data Scientists develop predictive models and advanced algorithms to extract deeper insights. The roles often overlap, but Data Scientists typically require broader skills in machine learning and statistical modeling.

What are some common challenges Senior Python Data Analysts face when working with large datasets, and how can they overcome them?

Senior Python Data Analysts often encounter difficulties such as slow processing speeds, memory limitations, and data quality issues when handling large datasets. To overcome these challenges, it's essential to leverage efficient libraries like pandas and Dask, utilize optimized data formats (such as Parquet), and implement batch processing or cloud-based solutions. Collaborating closely with data engineers and IT teams also helps ensure robust data pipelines and infrastructure. Regular code optimization and staying updated on best practices can further enhance performance when working at scale.

What is a Senior Python Data Analyst?

A Senior Python Data Analyst is an experienced professional who uses Python programming to collect, process, and analyze large sets of data. They are responsible for extracting meaningful insights from data to support business decisions, often using libraries like pandas, NumPy, and matplotlib. In addition to technical skills, they also apply statistical analysis and data visualization techniques, and frequently mentor junior analysts or collaborate with data scientists and engineers. Their role may also involve developing automated data pipelines and ensuring data quality across projects.
What are the most commonly searched types of Python Data Analysis jobs in Illinois? The most popular types of Python Data Analysis jobs in Illinois are:
What are popular job titles related to Senior Python Data Analysis jobs in Illinois? For Senior Python Data Analysis jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Senior Python Data Analysis jobs in Illinois look for? The top searched job categories for Senior Python Data Analysis jobs in Illinois are:
What cities in Illinois are hiring for Senior Python Data Analysis jobs? Cities in Illinois with the most Senior Python Data Analysis job openings:
Senior Python Data Analysis jobs near you
Model/Analysis/Validation Senior Analyst

Model/Analysis/Validation Senior Analyst

Citigroup, Inc.

Schaumburg, IL • On-site

$142K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 16 days ago

Job description

Citibank, N.A. seeks a Model/Analysis/Validation Senior Analyst for its Schaumburg, Illinois location.
Duties: Design and implement machine learning models (XGBoost, LightGBM, Neural Networks) tailored for Citi Cards portfolios to improve credit decisions. Build algorithms that generate credit decline reasons based on model outputs. Develop frameworks for feature selections, capping/flooring logic and hyperparameter optimization to streamline modelling processes across teams. Experiment with statistical segmentation methods to group customers by risk profiles and behavioral patterns. Identify and engineer predictive variables that capture customer delinquency risk using automated feature importance techniques like LightGBM. Conduct data analysis using tools like Python, SAS, SQL and Spark to access model performance and identify risks. Create documentation for Model Risk Management (MRM), including rationale for model choices, adverse action logic, and model monitoring plans. Collaborate with Risk Policy and Governance teams to ensure models are integrated into decision strategies and meet compliance standards. A telecommuting/hybrid work schedule may be permitted within a commutable distance from the worksite, in accordance with Citi policies and protocols.
Requirements: Requires a Master's degree, or foreign equivalent, in Information Technology and Management, Statistics, Mathematics, Data Science or related field and 3 years of experience as a Risk Policy Senior Analyst, Analyst-Data Services, Data Analyst or related position using quantitative and analytic skills to derive data patterns, trends, and insights. Alternatively, employer will accept a Bachelor's degree in the stated fields and 5 years of progressively responsible, post-baccalaureate experience. 3 years of experience must include: Data Analysis to identify risks; Data Mining; Using Python and SQL for data-driven analytics; Implementation of robust data quality checks and reconciliation processes across large-scale datasets to ensure accuracy and consistency; and Liaising with cross-functional business partners including business, into production deployment. Applicants submit resumes at https://jobs.citi.com/. Please reference Job ID #26971143. EO Employer.
Wage Range: $142,210 to $142,210
Job Family Group: Risk Management
Job Family: Model Development and Analytics
Job Family Group:
Job Family:
Time Type:
Full time
Primary Location:
Schaumburg Illinois United States
Primary Location Full Time Salary Range:
In addition to salary, Citi's offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.
Most Relevant Skills
Please see the requirements listed above.
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.
Anticipated Posting Close Date:
Aug 12, 2026
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.
If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.
View Citi's EEO Policy Statement and the Know Your Rights poster.

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