Software Engineer, Ad Signals

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 the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com.

We are seeking a senior backend software engineer to help build the app conversion signals that power Reddit’s app advertising business. You will work on MMP integrations, SKAN processing, and App CAPI to make app installs and in-app events more reliable, useful, and easier for advertisers to integrate.

Role Description

Advertisers depend on conversion signals to understand campaign performance and guide investment. Missing events, duplicate delivery, inconsistent mappings, and difficult integrations can undermine that trust. Your work will improve the systems and diagnostics that make app signals usable for measurement and downstream ads systems.

Responsibilities

• Own backend projects across MMP, SKAN, and App CAPI, from requirements and design to implementation, rollout, and ongoing operation.

• Build scalable ingestion and processing services with clear contracts, validation, deduplication, failure recovery, and data lineage.

• Develop integration tooling and diagnostics that help advertisers and partners identify and