Loomstack
Developer platform for shipping, testing, and rolling back code safely.
About Loomstack
Loomstack is the layer between a developer's commit and production. It runs tests, builds artifacts, ships them across environments, and rolls back the moment something breaks, all from one configuration that teams can actually read. More than 60,000 developers ship over four million deploys a month through the platform.
The company was founded in 2018 by infrastructure engineers from two large tech companies who had each spent years building internal deployment platforms, the kind of tooling that makes elite engineering organizations fast, and that everyone else recreates badly out of shell scripts and hope. Loomstack is that internal platform, productized.
The developer workflow
Push code, and Loomstack takes it from there. Tests run in parallel across a fleet of ephemeral runners, builds are cached aggressively so nothing compiles twice, and releases roll out in stages with automatic gates watching error rates and latency at every step. If a canary deployment degrades anything, the rollback happens in seconds, before most users ever see the bad version, and before the engineer has finished their coffee.
- Parallel test execution with intelligent splitting, cutting suite times by 60 to 80%
- Content-addressed build caching shared across the whole team
- Progressive delivery: canary releases, traffic shifting, and automatic rollback gates
- Preview environments spun up for every pull request and torn down on merge
- One readable configuration file, versioned with the code it deploys
- Deployment audit history that satisfies SOC 2 reviewers out of the box
The configuration problem
Every engineering team knows the failure mode: the CI/CD setup grows over years into a tangle of YAML, bash, and tribal knowledge that exactly one person understands, and that person is on vacation. Loomstack's strongest design opinion is that deployment configuration is a product surface. The config format is small, typed, and documented, errors point at the exact line with a suggested fix, and onboarding a new engineer takes an afternoon instead of a month.
Reliability as a feature
Loomstack's own infrastructure is built to be more reliable than the software it deploys, because a deployment platform that goes down during an incident is worse than useless. The control plane runs across multiple regions, and even in the worst case, running deployments complete and rollbacks stay available.
Who runs on it
Customers range from ten-person startups to engineering organizations with over a thousand developers. The common thread is teams that ship frequently and have decided that maintaining their own deployment infrastructure is a tax they no longer want to pay.
Working with Hydra Labs
Hydra Labs rebuilt the Loomstack marketing site and documentation hub with a developer-first design system, including interactive configuration examples that run live in the browser. Time-to-first-deploy for new signups dropped by half.
Our mission
Make safe, frequent shipping the path of least resistance.