Epsilon's Decision Sciences Identity (DSI) team seeks a PhD-level Lead Research Scientist to advance the Identity Resolution Platform that powers real-time digital marketing at internet scale. You will contribute to research and development initiatives that expand identity capabilities across Epsilon's marketing businesses, transforming novel ideas into production technologies with measurable business impact. This role sits at the core of Epsilon's identity platform, tackling complex, ambiguous problems using large-scale data. Working closely with engineering and product teams, you will apply analytical rigor, creativity, and strong computer science fundamentals to develop scalable identity solutions that improve marketing performance for leading brands. Responsibilities 34; Individually contribute to data science and machine learning R&D projects 34; Use data science, machine learning, and/or computer science skills to conduct research and contribute to solutions to technology and business problems 34; Contribute to projects from early-stage research through development 34; Implement and optimize innovative algorithms in distributed environments 34; Develop an understanding of Epsilon personalization platform and proprietary datasets 34; Participate fully in our collaborative approach to research and applications projects Qualifications Qualifications 34; Ph.D. in Computer Science, Electrical Engineering, Statistics, Mathematics, Economics, Physics, Chemistry, Operations Research, or related quantitative field 34; Research experience and coursework in Machine Learning 34; Strong understanding of statistical, analytical, and predictive modeling techniques 34; Strong Python programming skills and experience with data structures, algorithms, and production-quality code development 34; 2+ years of relevant programming experience through academic research, internships, or industry work 34; Ability to code independently without AI as well as effectively leverage AI-assisted development tools 34; Proven ability to design, execute, and deliver research projects 34; Excellent communication and interpersonal skills, including ability to translate complex technical concepts for non-technical audiences 34; Self-motivated, highly organized, and collaborative, with the ability to manage multiple priorities in highly collaborative, team-oriented environments Additional, But Not Required Skills 34; Experience with graphs/networks and unsupervised clustering algorithms (community detection on graphs) 34; Experience working with large, complex datasets in research or production environments 34; Experience with distributed computing and large-scale data processing (Spark, Hadoop, Databricks, cloud databases) 34; Experience with cloud platforms and data ecosystems (AWS, S3, Databricks) 34; Proficiency in SQL, Scala, Spark libraries, and advanced database querying 34; Familiarity with LLMs, Generative AI, and agentic frameworks 34; Experience in one or more advanced domains: Community Detection on Graphs, Unsupervised Learning, NLP, Information Retrieval, Mathematical Optimization, Control Theory, Time-Series Analysis, or Causal Inference 34; Ability to partner with business and technical collaborators to deploy algorithms into production platforms 34; Experience translating research innovations into scalable, customer-facing products 34; Additional research experience in computational fields such as data science, AI/ML, statistics, computer science, or graph algorithms Click here to view how Epsilon transforms marketing with 1 View, 1 Vision, 1 Voice. Additional Information Compensation Range: USD $87,100.00 - USD $173,700.00/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 8/31/2026.