Senior Applied Scientist

• Develop & Evaluate ML Models – Contribute to the design, implementation, and evaluation of machine learning models across areas such as NLP, deep learning, optimization, and personalization.
• Collaborate on Production Systems – Partner with engineers to help deploy and monitor models in large-scale, real-time environments.
• Experimentation & Analysis – Design and analyze A/B experiments to evaluate model performance and support data-driven decision-making.
• Research & Innovation – Stay current with advances in ML and AI, applying modern techniques to practical advertising and measurement challenges.
• Cross-Functional Collaboration – Work closely with Product, Engineering, and Data teams to translate business problems into scalable modeling solutions.
• Continuous Learning & Growth – Receive mentorship from senior scientists while building technical depth in production ML systems.

• Experience: 3+ years of experience building machine learning models OR recent PhD in Computer Science, Machine Learning, Statistics, or a related quantitative field
• Strong ML Foundations – Solid understanding of: Supervised and unsupervised learning, Statistical modeling, Optimization methods, Model evaluation and validation.
• Programming Skills: Proficiency in Python and familiarity with ML frameworks such as PyTorch, TensorFlow, or similar.
• Data & Experimentation Skills – Experience working with structured datasets and conducting rigorous experimental analysis.
• Problem-Solving Ability – Ability to break down ambiguous problems and develop practical modeling approaches with guidance.

• Research experience in deep learning, NLP, reinforcement learning, or causal inference
• Internship or industry experience deploying ML models
• Experience with SQL and large-scale datasets
• Exposure to cloud environments (AWS, GCP, Azure)
• Interest in Ad Tech, real-time systems, or large-scale personalization

Investing in our employee’s professional growth is important to us, but so is investing in their well-being. That’s why Viant was voted one of the best places to work and some of our favorite employee benefits include fully paid health insurance, paid parental leave and unlimited PTO and more. 

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