**Overview** As a Data Scientist in our Decision Sciences R&D organization, you will be responsible for researching and building optimization, control theory, simulation, machine learning and AI applications to extend Epsilon Retail Media Onsite ad personalization platform. Epsilon’s business is based on analyzing anonymized data at Internet scale and evaluating tens of billions advertising opportunities per month in real-time. You will work on real-world problems as part of our highly collaborative R&D team, and your solutions will directly and rapidly impact our business. This includes analyzing raw source data and derived data; researching and developing models, algorithms, and applications; building tools and analyses for new and existing products; and presenting findings. **Responsibilities:** + Develop an understanding of Epsilon’s ad personalization platform and proprietary datasets. + Use your optimization, control theory, simulation, machine learning, and AI expertise to research and recommend the best approaches to solving our technology and business problems. + Design, implement, and validate your solutions primarily in the GCP stack (GCS, Bigquery, VertexAI, Gemini) using Python. + Work with our Engineering teams to integrate your solutions into Epsilon’s platform. + Participate fully in our collaborative approach to research and applications projects. **Requirements:** + A Ph.D. in computer science, operations research, electrical engineering, statistics, mathematics, physics, economics, or a related scientific discipline. + Research experience and coursework in optimization, control theory, machine learning, simulation or NLP/LLMs. + Fluency in programming. Familiarity with Python. + Experience working with large data sets. + Strong understanding of modeling and statistical techniques. + Desire to work in a highly collaborative environment. **Additional Useful but not Required Skills:** + Experience with the GCP stack (GCS, Bigquery, VertexAI, Gemini), or other big-data ecosystems (e.g. Spark). + Familiarity with SQL, Scala, Golang + Experience modeling or analyzing consumer behavior, market dynamics, or auctions Click here to view how Epsilon transforms marketing with 1 View, 1 Vision, 1 Voice. (https://www.youtube.com/watch?v=xpjtfpntuv8&t=1s) **Additional Information** 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. Epsilon has a core set of 5 values that define our culture and guide us to create value for our clients, our people and consumers. We are seeking candidates that align with our company values, demonstrate them and make them meaningful in their day-to-day work: + **Act with integrity.** We are transparent and have the courage to do the right thing. + **Work together to win together.** We believe collaboration is the catalyst that unlocks our full potential. + **Innovate with purpose.** We shape the market with big ideas that drive big outcomes. + **Respect all voices.** We embrace differences and foster a culture of connection and belonging. + **Empower with accountability.** We trust each other to own and deliver on common goals. **Because You Matter** As an Epsilon employee, you deserve perks and benefits that put you and your wellbeing first. Our benefits encompass a wide range of offerings, including but not limited to the following: + **Time to recharge:** Additional 5 days annual leave each year after 2 years + **Family Wellbeing:** Parental leave policy with up to 18 weeks paid primary carer leave and generous secondary carer benefits based on service Plus additional 5 days paid carer leave to care for your little ones without having dip into your personal leave + **Work Your World program:** enabling employees the flexibility to work from anywhere in the world for up to 6 weeks per year. + **Rewards and recognition:** Shop our rewards store front when you receive points + **Extra Perks:** Hybrid work arrangements, Gym memberships, Learning & Development opportunities, Employee wellbeing programs (all-in-one psychological, medical & safety needs) _*Epsilon benefits are subject to eligibility requirements and other terms._ If you don’t tick every box in this ad, please don’t rule yourself out. Research suggests that women and other people in underrepresented groups tend to only apply if they meet every requirement. We focus on hiring people who share our values of inclusion, collaboration, adaptability, fearlessness, and integrity, rather than ticking boxes – so if this role resonates with you, please apply. Diversity. Inclusion. Equity. More than just words, these are part of our DNA. At Publicis Groupe we are committed to the inclusion and recognition of all people; regardless of race, age, culture, ability, ethnicity, gender identity or expression, sexual orientation, marital status and religious affiliation. We believe that to deliver the best solutions to our clients, our people need to reflect the diverse communities in which our clients operate in. We value diversity and the skills, knowledge and experience that difference brings to our culture and solutions. Uniqueness is powerful; without it we wouldn’t be where we are today. So be you – we like it that way. We are committed to providing reasonable adjustments for people with disability or those that require additional support throughout the application process.  If you need any assistance or adjustments, please contact us via recruitment@publicisgroupe.com - your personal information will be kept confidential. \#LI-JD1