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Slack Engineering Engineering Blog

8 articles on EngBrief

Slack Engineering shares how the team behind one of the world's most popular workplace collaboration tools builds, scales, and operates their platform. Posts cover real-time messaging infrastructure, search, security, developer experience, and the challenges of serving millions of concurrent users.

Real-time SystemsInfrastructureSearchDeveloper Experience
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Latest Articles

Slack Engineering1 min readDec 1, 2025

Streamlining Security Investigations with Agents

Slack’s Security Engineering team is responsible for protecting Slack’s core infrastructure and services. Our security event ingestion pipeline handles...

CloudSecurityDistributed SystemsBackend
Slack Engineering1 min readNov 19, 2025

Android VPAT journey

Background A Voluntary Product Accessibility Template (VPAT) is a document that outlines how well a product aligns with accessibility (a11y) standards. Its...

Distributed SystemsBackend
Slack Engineering1 min readNov 6, 2025

Build better software to build software better

We manage the build pipeline that delivers Quip and Slack Canvas’s backend. A year ago, we were chasing exciting ideas to help engineers ship better code,...

BackendDistributed Systems
Slack Engineering1 min readOct 23, 2025

Advancing Our Chef Infrastructure: Safety Without Disruption

Last year, I wrote a blog post titled Advancing Our Chef Infrastructure, where we explored the evolution of our Chef infrastructure over the years. We talked...

CloudDistributed SystemsBackend
Slack Engineering1 min readOct 7, 2025

Deploy Safety: Reducing customer impact from change

It’s mid 2023 and we’ve identified some opportunities to improve our reliability. Fast forward to January 2025. Customer impact hours are reduced from the peak...

Distributed SystemsBackend
Slack Engineering1 min readSep 4, 2025

Building Slack’s Anomaly Event Response

As cyberattacks evolve to unprecedented levels of sophistication and speed, the time gap between breach detection and response has never been more critical....

SecurityPerformanceDistributed SystemsBackend
Slack Engineering1 min readApr 14, 2025

Optimizing Our E2E Pipeline

In the world of DevOps and Developer Experience (DevXP), speed and efficiency can make a big difference on an engineer’s day-to-day tasks. Today, we’ll dive...

PerformanceDistributed SystemsBackend
Slack Engineering1 min readMar 7, 2025

How we built enterprise search to be secure and private

Many don’t know that “Slack” is in fact a backronym—it stands for “Searchable Log of all Communication and Knowledge”. And these days, it’s not just a...

Distributed SystemsBackend