CI/CD Pipelines

The CI/CD pipelines we inherit tend to fall into one of two categories. The first: “green means safe,” except that half the tests are flaky, the deploy step has been commented out for weeks, and nobody remembers what the blue-green cutover script actually does. The second: a beautifully engineered system that takes forty minutes to run, blocks every PR, and teaches engineers to merge when the build’s half-finished because waiting is intolerable. Both are failure modes. Our CI/CD work aims for the middle: pipelines that are fast enough to trust, thorough enough to catch regressions, and structured enough that a new engineer can read them and understand what they’re doing.

We structure pipelines around three stages: verify (lint, type-check, tests), build (containers, preview deployments), and release (production deploy, migrations, notifications). Each stage has a contract — what must pass, what can be skipped in emergencies, who’s allowed to override. We document the contract in the repository, not in Slack. The shape scales from small teams to enterprise engagements without needing to be rewritten.

Preview deployments are one of the highest-leverage pieces of infrastructure we build. A PR that ships with a working preview URL changes how design, product, and stakeholders engage with engineering — it becomes collaborative rather than reactive. For Next.js work we use Vercel’s preview infrastructure as-is; for other stacks we build the equivalent on whatever platform the client runs. The goal is the same: nobody reviews a design in a static screenshot when the running version is one link away.

Release automation is the third half of the work. Blue-green and canary deploys where the workload earns them. Rollback paths documented and tested, not hoped for. Migration runners that don’t require human coordination to run safely. Release notifications that go to the right channel with the right context. None of this is the interesting part of engineering, and all of it is what separates teams that deploy confidently from teams that don’t.