Weekend Data Analyst Side Jobs in Chicago, IL (NOW HIRING)

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How You’ll Make an Impact

As a Business System Analyst, you will have an opportunity to be part of a data-centric team which is focused on providing technical solutions and strategies to achieve our client's digital marketing objectives using Epsilon's market-leading cleanroom - PeopleCloud Prospect & Discovery.

The Business Systems Analyst leverages their understanding of the ad tech space, technical capabilities, and knowledge of Epsilon's Cleanroom platforms to support actionable digital media strategies and solutions.

This role requires you to have both business and technical expertise and will need you to act as a primary liaison between the client, advertising agencies, technical product teams, and data science teams. You will play a key role within the Platform Delivery team and work across many disciplines within the SDLC - including requirements gathering / analysis, documentation, design, and testing. In addition, you will also be expected to work closely with the Delivery Lead to assist in on-time project delivery.

What you’ll do as a Business System Analyst (Ad-Tech)

• Be part of a fast-paced and passionate team to integrate some of the largest marketers into Epsilon's Cleanroom platform -- PeopleCloud Prospect & Discovery.
• Be the subject matter expert and client liaison while working with internal teams to drive the execution and delivery of key client digital initiatives.
• Collaborate with internal teams, including Advertising Agencies, Data Science, Account Management, Client Development, Media Managers, Data Engineers, and Product Owners.
• Be responsible for purposeful project documentation, including requirements, source-to-target specifications, process flow diagrams, data profiles, and test cases. Lead documentation reviews and gain acceptance.
• Create traceability of all business requirements to functional and non-functional specifications to cover data onboarding (including warehouse processing), business rules, and end user use cases, e.g., digital campaigns, reports, analytical models / analysis, etc.
• Analyze data quality and provide recommendations for change.
• Drive product fitment analysis versus gap areas and create specifications for gap resolution.
• Support the onboarding of multiple data sources to a client’s cleanroom environment, with special attention to documentation, business requirements, data workflows, source-to-target specifications, needs analysis, and validation.
• Leverage partnership with client services, product/data teams, data science, and relationships with clients to ensure business requirements are captured and met.
• Become an insider and trusted advisor to client teams from a BSA perspective.
• Host effective client meetings, understand deliverables, and drive successful outcomes.
• Support developing and implementing best practices, standards and methodologies around business analysis and data analysis.

Who You Are

• 2+ years of experience in relevant business analysis work in the database/ data-driven marketing space.
• Experience in defining business requirements and functional specifications.
• Experience in translating business requirements into functional/business specifications.
• Understanding of relational databases, data warehouse, and data mart concepts.
• Ability to assemble, analyze, and evaluate data.
• Understanding of SQL concepts.
• Curious with desire to continue learning.
• Strong critical thinking and problem-solving skills.
• Collaborative with strong attention to detail.
• Excellent written and verbal communication skills.
• Excellent presentation skills.
• Ability to multi-task, prioritize and quickly change priorities.
• Ability to work collaboratively with global teams.
• Understanding of web technologies, a plus.
• Prefer candidates with previous digital marketing experience, especially within the online display advertising space.
• Prefer candidates with working knowledge of advertising technologies such Demand-Side Platform (DSP), Supply-Side Platform (SSP) and Data Management Platform (DMP).

When You Join Us, We’ll Create Something EPIC TogetherEpsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. For decades, we've provided marketers from the world's leading brands the data, technology and services they need to engage consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels.

Epsilon's comprehensive portfolio of capabilities across our suite of digital media, messaging and loyalty solutions bridge the divide between marketing and advertising technology. We process 400+ billion consumer actions each day using advanced AI and hold many patents of proprietary technology, including real-time modeling languages and consumer privacy advancements. Thanks to the work of every employee, Epsilon has been consistently recognized as industry-leading by Forrester, Adweek and the MRC. Epsilon is a global company with more than 9,000 employees around the world.

Our pillars aren't just words. They're how we show up every day.

• People centricity: We focus on employee well-being in an environment where colleagues truly care about each other.
• Collaboration: We work together, support one another, and collectively achieve goals.
• Growth: There are endless opportunities for growth through learning, development and career advancement.
• Innovation: We drive progress through cutting-edge solutions and forward-thinking approaches.
• Flexibility: We've created a balance between work and personal life, and we encourage adaptability to solve problems creatively.

Our values guide us to create value for our clients, our people and consumers.

• Act with integrity
• Work together to win together
• Innovate with purpose
• Respect all voices
• Empower with accountability

These pillars and values are our foundation-shaping our culture, guiding our decisions, and uniting us in common purpose.

Because You Matter

As an Epsilon employee, you deserve perks and benefits that put you, your family and your finances first. Our benefits encompass a wide range of offerings, including but not limited to the following:

• Time to Recharge: Flexible time off (FTO), 15 paid holidays
• Time to Recover: Paid sick time
• Family Well-Being: Parental/new child leave, childcare & elder care assistance, adoption assistance
• Extra Perks: Comprehensive health coverage, 401(k), tuition assistance, commuter benefits, professional development, employee recognition, charitable donation matching, health coaching and counseling

Epsilon benefits are subject to eligibility requirements and other terms.

Epsilon is an Equal Opportunity Employer.Epsilon's policy is not to discriminate against any applicant or employee based on actual or perceived race, age, sex or gender (including pregnancy), marital status, national origin, ancestry, citizenship status, mental or physical disability, religion, creed, color, sexual orientation, gender identity or expression (including transgender status), veteran status, genetic information, or any other characteristic protected by applicable federal, state or local law. Epsilon also prohibits harassment of applicants and employees based on any of these protected categories. Epsilon will provide accommodations to applicants needing accommodations to complete the application process. Please reach out to LeaveofAbsence@epsilon.com to request an accommodation.

For San Francisco Bay and Los Angeles Areas: Epsilon will consider for employment qualified applicants with criminal histories in a manner consistent with the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance and San Francisco Police Code Sections 4901-4919, commonly referred to as the San Francisco Fair Chance Ordinance. Applicants with criminal histories are welcome to apply.

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Compensation Range: USD $63,600.00 - USD $118,000.00/Annually. This is the pay range the Company believes it will pay for this position at the time of this posting. Consistent with applicable law, compensation will be determined based on the skills, qualifications, and experience of the applicant along with the requirements of the position, and the Company reserves the right to modify this pay range at any time. Temporary roles may be eligible to participate in our freelancer/temporary employee medical plan through a third-party benefits administration system once certain criteria have been met. For regular roles, the Company will offer medical coverage, dental, vision, disability, 401k, and paid time off. The company anticipates the application deadline for this job posting will be 8/4/2026.