Open roles at companies in the Andreessen Horowitz portfolio.
Staff Data Scientist designs probabilistic identity models and lift measurement systems to improve ad targeting and privacy-compliant attribution for Reddit’s ad platform.
Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on…
Staff ML Engineer on Reddit's Ads Creative Effectiveness team building generative AI products for advertisers — image, video, and copy generation and editing pipelines with brand-asset preservation, LLM/VLM fine-tuning tuned by ad performance (RLHF/RLPF), and safety/compliance filtering.
Engineering manager leading Reddit's Knowledge Graph Platform team: building a scalable, AI-powered knowledge graph (LLM/agentic construction, data/API contracts, governance, observability) that powers ads, search, and consumer features. The role is mostly people leadership, technical direction, and driving platform adoption; 100% remote (US/Canada), ET timezone preferred.
Lead Reddit’s marketing measurement strategy, building Media Mix Models and incrementality tests to optimize hundreds of millions in ad spend across B2B and B2C growth.
Lead Reddit’s marketing measurement strategy, building Media Mix Models and incrementality tests to optimize hundreds of millions in ad spend and drive advertiser/user growth.
Frontend engineer on Reddit's Brand Ad Formats team building ad experiences and patterns for Reddit's web app, owning the full development cycle from design through deploy. Core stack: TypeScript/JavaScript, React, HTML/CSS, with Go, gRPC, Kubernetes and GenAI tooling on the team.
Staff ML engineer providing technical leadership for Reddit's Ads Retrieval team — designing and shipping large-scale candidate-generation and retrieval models (two-tower, embeddings, ANN search) that determine which ads compete before ranking and auction. 100% remote within the US; base salary $230k–$322k plus equity.
Owns the vision, strategy, and roadmap for Reddit's Go-To-Market Systems team — building internal sales tooling (CRM, data enrichment, AI-powered workflows) that boosts seller productivity and grows the advertiser base. On-site role requiring residence within commuting distance of LA, SF, Chicago, or NYC hub offices.
Mid-level frontend engineer on Reddit's Ads Manager team building advertiser-facing tools for creating and managing ad campaigns on ads.reddit.com. Day to day: owning medium-sized frontend projects end to end — technical design, implementation, testing, and release — while collaborating with PMs, designers, and backend engineers on performance and reliability.
Build and refine Reddit’s ad-measurement and identity systems using probabilistic modeling, causal inference, and ML to improve advertiser ROAS and privacy-safe targeting.
Staff Data Scientist on Reddit’s Ads team building identity resolution, lift measurement, and predictive models to improve ad performance and advertiser ROI.
Build and apply ML models to improve Reddit’s ad platform, analyzing large-scale data to drive advertiser performance and platform growth.
Senior Data Scientist at Reddit designing experiments, analyzing user/product metrics, and mentoring teams to drive growth and strategy across media platforms.
Lead Android engineering for Reddit’s video and interactive ad formats, defining technical strategy and mentoring teams to build scalable, high-performance mobile ad experiences.