engblogs

Technical overview of how SoundCloud keeps play counts and creator statistics in sync by stitching real-time and batch data with Stitch on a Lambda Architecture built on Cassandra and Kafka, enabling pre-aggregation, caching, and scalable top lists.

Explores SoundCloud’s Stitch-powered Lambda Architecture approach to real-time and batch pre-aggregation of play counts, likes, and other signals across a Kafka-based event pipeline and Cassandra storage to keep counts, top lists, and creator statistics in sync.

Tracking play counts in real time to provide creators with accurate and up-to-date statistics on their popular songs and fanbase impact.

How to migrate Android UI test suites from a custom device farm to Firebase Test Lab, using Android Test Orchestrator and Flank to run tests in parallel, improve robustness, and cut build times.

How we migrated Android UI tests from an internal device farm to Firebase Test Lab, enabling massively parallelized test runs with Android Test Orchestrator and Flank to stabilize CI and cut runtimes.

Running Android UI Test Suites on Firebase Test Lab speeds up UI test execution on mobile devices and emulators.

Exploring AI safety strategies using debate techniques

A blogpost about using Expect tests for repeatable exploratory programming

Exploring advanced techniques for policy gradients in machine learning models

Exploring advancements in generalization for Reinforcement Learning through a new benchmark approach.

Explore the resurgence of vintage development challenges in the modern era.

Exploring the evolution of the software stack at Jane Street from statistical research to strategy execution.