About the role

Role

Senior Machine Learning Engineer (Research)

Employment type: 24-month contract
Onsite: 4 days/week onsite (no remote) in Santa Monica, CA or Seattle, WA

Overview

Join an AI/ML research team building and evolving high-performance, distributed, microservice-based advertising platforms. You’ll apply state-of-the-art ML to improve ad decisioning, forecasting, targeting, pacing, pricing, experimentation, and overall ad experience at scale.

Responsibilities

Apply modern ML/AI techniques to advertising domains (forecasting, targeting, pacing, pricing, delivery optimization, and ad experience)
Design, prototype, and deploy novel ML solutions with rapid iteration
Architect and scale production-ready ML systems for core platform capabilities
Drive engineering best practices for code quality, system design, testing, and operational reliability
Mentor junior engineers and promote technical excellence and continuous learning

Required Qualifications

Bachelor’s degree in Computer Science/related field (or equivalent practical experience)
3+ years building and deploying large-scale ML systems
Strong foundation in machine learning, statistics, mathematics, and numerical optimization
Python proficiency (primary); working knowledge of Java and SQL
Solid understanding of algorithms and data structures
Experience with TensorFlow, PyTorch, and Hugging Face (Hugging Face libraries/models)
Hands-on deep learning with sequence-based / recurrent architectures
Experience with transformer models (BERT-like, GPT-like, vision transformers)
Knowledge of multimodal embeddings (text, image, audio, structured data)
Experience with large language models (GPT/Claude/Llama-style)
Familiarity with LLM evaluation and retrieval-augmented generation (RAG) architectures
Strong communication skills across technical and non-technical stakeholders

Nice to Have

Master’s or PhD in Computer Science or related field
Experience in digital advertising / video advertising / digital marketing platforms
Experience with Databricks and/or AWS SageMaker

About Prosum

Prosum is a digital advertising technology organization building large-scale advertising platforms. Its AI/ML research team focuses on advancing machine learning capabilities for advertising systems, including ad decisioning, forecasting, experimentation, and ad experience optimization.

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