The Problem At HubSpot, we have a fundamental tension built into our culture: we want to help customers succeed, which often means giving employees access to customer portals: Engineers to fix bugs, sales engineers assisting with account setup, or customer support troubleshooting issues during live ...

On February 25, 2026, HubSpot experienced a service disruption affecting user access to specific types of workflows within our user interface. All backend workflow automations continued to execute normally without interruption - no automations were delayed, missed, or lost. We have completed a thoro...

As HubSpot engineers have increasingly started writing more and more of their code with both local and cloud coding agents, we've noticed that now more than ever, code review is taking up a large portion of cycle time on new changes.

This post is the second in a series about empowering product, UX, and engineering teams with AI, especially in the context of writing code. Read the first post about scaling AI adoption here!

For years, Enzyme was the de facto standard for testing React applications. Originally built by Airbnb in 2015, Enzyme makes it easy to assert, manipulate, and traverse the output of React components. The last official release of Enzyme came after React 16 was launched in 2017, but even then did not...

On October 20, 2025, HubSpot experienced a significant service disruption affecting multiple product features due to a severe AWS outage in the us-east-1 region. While our infrastructure remained intact, the widespread nature of the cloud provider failure impacted both our services and critical thir...

​​Most software developers have heard the maxim, “it’s never a compiler bug,” and its companion, “it’s never a hardware bug.” But if you investigate enough bugs, you’ll eventually find an exception to this rule, and that’s what we found recently at HubSpot. I discovered how a hardware bug was affect...

This post is intended to be the first in a series about empowering product, UX, and engineering teams with AI. We’re going to focus on how we’ve approached and scaled the use of AI in the context of writing code.

Your business has evolved, and your tools should too. Our refreshed interface reduces cognitive load with thoughtful simplification and feature curation. This helps your team work more efficiently while maintaining all the powerful functionality you rely on. This is the foundation for your next deca...

On Thursday, August 7, 2025, between approximately 1:45 PM EDT and 2:05 PM EDT, HubSpot customers experienced widespread errors when accessing CRM records. With approximately 95% of requests failing at peak impact, this resulted in “All is not lost” errors across all record pages, object previews, a...

Authors: Rishav Paul , William Hou , Chris Connors , and Sejal Parikh. ----------

On Thursday, March 27, 2025, between approximately 15:00 UTC and 17:50 UTC, some HubSpot customers experienced delays in sending emails, including marketing emails, test sends, signup verifications, and 2FA (two-factor authentication) emails. This issue only affected a segment of our North American ...