ZipRecruiter

Log In

1

Senior Data Analyst Jobs in O Fallon, IL (NOW HIRING)

Equifax, Inc.

Senior Data Analyst, Finance

Saint Louis, MO · On-site

$83K - $105K/yr

The Senior Data Analyst, Finance is responsible for identifying Finance user requirements and delivering technology solutions that effectively and efficiently solve those needs. Fulfilling this ...

GRVTY

Senior Data Scientist

Saint Louis, MO

This role leverages advanced analytics, automation, data modeling, visualization, and software ... What You'll Be Doing As a Senior Data Scientist, you will develop advanced analytic solutions that ...

GRVTY

Senior Data Scientist

Saint Louis, MO · On-site

This role leverages advanced analytics, automation, data modeling, visualization, and software ... What You'll Be Doing As a Senior Data Scientist, you will develop advanced analytic solutions that ...

GRVTY

Senior Data Scientist

Saint Louis, MO

This role leverages advanced analytics, automation, data modeling, visualization, and software ... What You'll Be Doing As a Senior Data Scientist, you will develop advanced analytic solutions that ...

Boeing

Senior Data Scientist

Hazelwood, MO · On-site

Senior Data Scientist Company: The Boeing Company Boeing Defense, Space & Security (BDS) is hiring ... Build systems that enable conducting data analysis and exploration to identify patterns, trends ...

Boeing

Senior Data Scientist

Hazelwood, MO · On-site

Senior Data Scientist Company: The Boeing Company Boeing Defense, Space & Security (BDS) is hiring ... Build systems that enable conducting data analysis and exploration to identify patterns, trends ...

Boeing

Senior Data Scientist

Hazelwood, MO · On-site

Senior Data Scientist Company: The Boeing Company Boeing Defense, Space & Security (BDS) is hiring ... Build systems that enable conducting data analysis and exploration to identify patterns, trends ...

Boeing

Senior Data Scientist

Hazelwood, MO

Senior Data Scientist Company: The Boeing Company Boeing Defense, Space & Security (BDS) is hiring ... Build systems that enable conducting data analysis and exploration to identify patterns, trends ...

Stellar IT Group

Data Analyst

Saint Louis, MO · On-site

Data Analyst Job Location: Remote Interview: Virtual Job Duration: 6 Months Contract Overview: We are seeking a Data Analyst with strong SQL and Python expertise to support data validation, data ...

The Timberline Group

Data Analyst

Saint Louis, MO · On-site +1

We seek the talent of a dynamic Data Analyst who seeks to bring their A game to a collaborative team of talented professionals. You are not afraid to make impact where your opinion matters in a ...

staffit solutions

Data Analyst

Saint Louis, MO · On-site

This position will be responsible for understanding and analyzing complex business & data requirements. Prepare detailed functional specifications that drive the design of data model and ETL ...

Socket.dev

Data Analyst

Creve Coeur, MO · On-site

$71 - $135/hr

Data Analyst As Bayer Crop Science's Digital Farming arm, we deliver sustainable digital solutions using the latest agronomic science, data science, engineering, and real-world farming experience.

next page

Showing results 1-20

All JobsData Analyst JobsSenior Data Analyst JobsSenior Data Analyst Jobs in O'Fallon, IL

Senior Data Analyst information

See O Fallon, IL salary details

$51.3K

$92.6K

$126.4K

How much do senior data analyst jobs pay per year?

As of Aug 28, 2026, the average yearly pay for senior data analyst in O'Fallon, IL is $92,563.00, according to ZipRecruiter salary data. Most workers in this role earn between $80,200.00 and $101,200.00 per year, depending on experience, location, and employer.

What is a senior data analyst?

Senior Data Analysts are experienced professionals who collect, process, and analyze complex data sets to help organizations make data-driven decisions. They often lead analytics projects, design data models, and communicate findings to stakeholders using reports and visualizations. In addition to technical expertise with tools like SQL, Python, or R, they frequently mentor junior analysts and work closely with business leaders to identify opportunities for improvement. Their insights can drive strategy, optimize operations, and support organizational goals.

What does a senior data analyst do?

A senior data analyst develops and leads a team of data analysts in business or research projects. Job duties include consulting with other departments and management, conducting research using analytical tools, developing business solutions, and writing reports. Qualifications for a career as a senior data analyst include a bachelor’s degree in statistics, computer science, or a related field; job experience in data analytics; familiarity with data modeling languages such as R and Python; and leadership skills.

What are some common challenges senior data analysts face when collaborating with cross-functional teams?

Senior Data Analysts often work closely with departments such as product, marketing, and engineering to align data insights with business objectives. A common challenge is translating complex data findings into actionable recommendations for non-technical stakeholders. Additionally, balancing multiple priorities and managing expectations across teams can require strong communication and project management skills. Proactively building relationships and maintaining open lines of communication can help overcome these challenges and ensure successful collaboration.

What are the key skills and qualifications needed to thrive as a senior data analyst, and why are they important?

To thrive as a Senior Data Analyst, you need advanced analytical skills, a strong foundation in statistics, and experience with data modeling, typically supported by a relevant degree in mathematics, statistics, or computer science. Expertise in data visualization tools (like Tableau or Power BI), SQL, and programming languages such as Python or R is often required, along with familiarity with big data platforms. Outstanding problem-solving, communication, and stakeholder management skills set top performers apart. These competencies ensure accurate data-driven insights and effective collaboration with business teams to drive strategic decision-making.

What is the difference between Senior Data Analyst vs Data Scientist?

AspectSenior Data AnalystData Scientist
Required CredentialsBachelor's degree in data-related field; experience in analytics toolsBachelor's or master's in data science, statistics, or related fields; often more advanced certifications
Work EnvironmentBusiness intelligence teams, analytics departmentsResearch teams, data science departments, R&D
Employer & Industry UsageFinance, healthcare, retail, tech companiesTech firms, startups, research institutions
Common Search & ComparisonOften compared for analytical roles with data scienceMore advanced, predictive modeling focus

The main difference between a Senior Data Analyst and a Data Scientist lies in their focus and skill set. Senior Data Analysts primarily handle data analysis, reporting, and visualization, while Data Scientists work on predictive modeling, machine learning, and advanced algorithms. Both roles require strong analytical skills, but Data Scientists typically have more technical expertise in programming and statistical modeling.

How much is a senior data analyst paid?

The average salary for a senior data analyst typically ranges from $70,000 to $110,000 annually, depending on experience, location, and industry. Professionals with advanced skills in SQL, Python, or data visualization tools may earn higher compensation, especially in competitive markets.

Is a senior data analyst a good job?

A senior data analyst is a well-regarded role that involves analyzing complex data sets, creating reports, and providing insights to support business decisions. It typically requires strong skills in SQL, Excel, and data visualization tools, and offers opportunities for career advancement and competitive salaries.
More about Senior Data Analyst jobs

What are the most commonly searched types of Data Analyst jobs in O'Fallon, IL?

The most popular types of Data Analyst jobs in O'Fallon, IL are:

What cities near O'Fallon, IL are hiring for Senior Data Analyst jobs?

Cities near O'Fallon, IL with the most Senior Data Analyst job openings:

Senior Data Analyst jobs near you
Infographic showing various Senior Data Analyst job openings in O'Fallon, IL as of August 2026, with employment types broken down into 1% As Needed, 81% Full Time, 16% Part Time, and 2% Contract. Highlights an 84% Physical, 4% Hybrid, and 12% Remote job distribution, with an average salary of $92,563 per year, or $44.5 per hour.

Senior Data Analyst in St. Louis, MO

Accenture Federal Services

Saint Louis, MO • On-site

$83K - $105K/yr

Full-time

Re-posted 7 days ago

Accenture Federal Services rating

8.7

Company rating: 8.7 out of 10

Based on 20 frontline employees who took The Breakroom Quiz

50th of 499 rated business services

Job description

The Work: 

The Senior Data Analyst plays a critical role in the application migration team by leveraging data to drive informed decision-making throughout the migration process. This position is responsible for compiling and analyzing complex datasets, maintaining comprehensive reports, and presenting actionable insights to stakeholders. The Senior Data Analyst works within Agile frameworks to support the team's data-driven approach to application assessment, migration planning, and post-migration evaluation.

Key Responsibilities

  • Collect and consolidate data from various sources related to application performance, usage, and migration progress
  • Ensure data quality, integrity, and consistency across all datasets
  • Conduct in-depth analysis of application data to identify patterns, trends, and potential issues
  • Perform statistical analysis to support decision-making in the migration process
  • Design and create comprehensive reports on various aspects of the migration project
  • Develop dashboards and visualizations to effectively communicate complex data insights
  • Maintain and update regular reports on migration progress, performance metrics, and KPIs
  • Create compelling visual representations of data findings using tools like Tableau, Power BI, or similar
  • Present data-driven insights and recommendations to technical and non-technical stakeholders
  • Develop and deliver presentations on migration analytics to various levels of the organization
  • Conduct pre- and post-migration comparisons to evaluate the success of migration efforts
  • Provide data-driven insights to support decision-making at all levels of the project
  • Define and track key performance indicators (KPIs) for the migration project
  • Develop metrics to measure the success and efficiency of the migration process
  • Create and maintain scorecards to track progress against project goals
  • Participate in Agile ceremonies (Sprint Planning, Daily Stand-ups, Sprint Reviews, and Retrospectives)
  • Collaborate with Product Owners to define and refine data-related user stories

Requirements:

  • Bachelors degree and minimum 5 years experience
  • Secret Security Clerance required
  • Demonstrated experience working with business stakeholders to understand business process, pain points, and insights that will deliver greatest value to the mission
  • Building and maintaining visualizations and dashboards in enterprise Business Intelligence tools (such as Tableau, PowerBI, Qlik, Microstrategy) or custom coding (D3, React, CSS)
  • Performing complex data pre-processing (joins, unions, aggregations) using tools and languages like SQL, R, or Python

#c"" "You must live local to St. Louis, MO OR be willing to travel to St. Louis every week Monday-Thursday"

What Accenture Federal Services employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

Apply