Sr. Data Scientist - Need 12+yrs exp,

Job Title: Sr. Data Scientist

Location: Bellevue, WA – Onsite

Long term contact

Please ensure the candidate has experience in the following areas:

• Machine Learning and Time Series Forecasting
• Measurement Science, including A/B Testing and Causal Inference Techniques
• Developing LLM-based solutions using Prompt Engineering, Embeddings, and basic RAG

Key Responsibilities

o Design build and deploy machine learning and GenAI models for advertising use cases such as forecasting conversion prediction bidding optimization recommendations and insights

o Develop LLM based solutions using prompt engineering embeddings and basic RAG for campaign diagnostics and decision support

o Design and analyse AB tests and experiments apply causal inference techniques DiD propensity scoring DML uplift modelling to measure true incremental impact

o Ensure models are scalable explainable and production ready following Responsible AI and governance standards

Business Collaboration

o Partner with Cross functional teams product engineering marketing operations to identify and scope highimpact opportunities where data science and AI can drive measurable business outcomes

o Translate strategic objectives into actionable analytical initiatives with clearly defined success metrics and timelines

Required Skills

o Python SQL ML frameworks

o Experience with Azure Databricks or large-scale data platforms

o Strong foundation in statistics experimentation and causal inference

o GenAI experience Prompt engineering LLM evaluation basic RAG

o Good to have Understanding of the Digital Marketing domain