Machine Learning Engineer, Ads Optimization & Ads Marketplace Quality (Fully Remote)

• This role sits in the Ads Optimization and Ads Marketplace Quality organizations, responsible for the health and performance of Reddit's ads marketplace.
• The team designs auction and bidding mechanisms, builds optimization systems for advertisers, and ensures marketplace quality by improving user ad experience.

Role Description:

• As a Machine Learning Engineer, you will build and evolve the auction, bidding, and budgeting systems that power Reddit Ads.
• You will own systems end-to-end: from problem formulation and algorithm design to experimentation, production deployment, and ongoing iteration.

Responsibilities:

• Design and implement optimization algorithms for auctions, bidding strategies, and pacing that balance advertiser performance, user experience, and marketplace efficiency.
• Partner with Ads Marketplace Quality to improve ad matching and ranking by incorporating new quality and relevance signals.
• Collaborate with Ads Optimization to integrate new bid strategies and pacing mechanisms into the broader ads ecosystem.

Qualifications:

• 3-5+ years of experience building, deploying, and operating machine learning systems in production, with strong programming skills in Python, Java, or Go.
• Experience designing scalable data processing systems and a demonstrated ability to translate ambiguous product problems into measurable solutions.

Reddit

Reddit is a community of communities built on shared interests and authentic conversations. With over 100,000 active communities and 126 million daily active users, it is one of the internet's largest sources of information.