Client Success Project Manager Jobs in Darien, IL

As an Associate, Client Success, you will play a key role in supporting the coordination and management of client relationships across a dynamic portfolio of accounts. You will partner closely with Account Executives, Client Services, Billing, and other cross-functional teams to ensure seamless execution of projects and a high-quality client experience.

In this role, you will help drive the day-to-day operational excellence behind data-driven marketing campaigns—supporting project delivery, managing timelines, and ensuring clear communication across partners. Your ability to stay organized, analyze data, and adapt to shifting priorities will directly contribute to campaign success and client satisfaction.

The Associate, Client Success will thrive in a fast-paced, collaborative environment, gaining exposure to high-profile client work while building foundational skills in account management, data-driven marketing, and cross-functional partnership.

• Support the development and execution of client projects by coordinating internal workflows and ensuring deadlines are met
• Maintain accurate, real-time project status updates and communicate progress effectively across teams
• Contribute to the execution of data-driven direct marketing campaigns, including preparation of client and conference materials
• Analyze large data sets to produce clear, concise reporting that supports Account Executive strategies
• Track program performance and generate consolidated reports to measure campaign effectiveness
• Support financial processes by researching and reconciling billing, invoicing, and shipping-related data
• Build strong working relationships across teams, including management, clients, and cross-functional partners
• Demonstrate flexibility and problem-solving skills in a fast-paced environment with shifting priorities
• Provide back-up support to Account Executives as needed

What you'll bring with you:

• Bachelor's degree in Business, Marketing, Communications, or a related field preferred
• 0–1 years of relevant work experience preferred
• Strong written and verbal communication skills
• Analytical mindset with the ability to work with large data sets and translate insights into actionable reporting
• Strong organizational skills and attention to detail
• Proficiency in Microsoft Excel, Word, and PowerPoint
• Ability to work both independently and collaboratively in a team environment
• Self-starter with strong initiative and a proactive approach to problem-solving

Why you might stand out from other talent:

• A strong interest in relationship marketing and understanding of industry trends and competitive landscape
• Experience working in fast-paced, deadline-driven environments
• Demonstrated ability to manage multiple priorities while maintaining accuracy and quality
• A collaborative mindset with the ability to influence and partner across diverse teams

When You Join Us, We'll Create Something EPIC Together Epsilon 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. #LI-ML1

Compensation Range: USD $56,000.00 - USD $84,000.00/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. Temporary roles may also qualify for participation in our 401(k) plan after eligibility 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 8/6/2026.