# Staff Machine Learning Engineer, Retrieval at Reddit

- Company: Reddit
- What the company does: Backed by 500 Global.
- Company website: https://www.redditinc.com
- Type: Startups (AI role)
- Level: Senior
- Location: Remote - United States
- Work setup: Remote
- Posted: 2026-09-16
- Apply by: 2026-10-31
- Apply: https://job-boards.greenhouse.io/reddit/jobs/8178085
- Page: https://www.1752.vc/careers/jobs/reddit-staff-machine-learning-engineer-retrieval/

## About the role

We are looking for a Staff Machine Learning Engineer to provide technical leadership for the Retrieval ML team. You will lead the design and evolution of retrieval models and modeling practices that improve relevance, advertiser outcomes, and user experience at Reddit scale. This is an applied ML role centered on retrieval modeling and end-to-end product impact.

## What they're looking for

- 7+ years of industry experience, including substantial experience building and shipping applied ML products
- Deep experience with information retrieval, candidate generation, recommender systems, ranking, or related relevance problems
- Strong understanding of retrieval modeling concepts, including DNN, embeddings, two-tower or dual-encoder models, approximate nearest-neighbor search, and multi-stage retrieval
- Deep experience training, evaluating, debugging, and deploying deep learning models using TensorFlow, PyTorch, or similar frameworks
- Demonstrated ownership of ML projects from problem framing and data preparation through offline evaluation, online experimentation, production launch, and iteration
- Strong command of experimental design and model evaluation, including how offline retrieval metrics relate to downstream business and user metrics

Tags: Ads Engineering