Introducing the Buildkite Engineering Blog

Welcome to the Buildkite Engineering Blog! This is a new space where our engineering team will share technical insights, architectural decisions, and lessons learned from building and scaling Buildkite.

Why an Engineering Blog?

At Buildkite, we’ve always believed in transparency and sharing knowledge with the developer community. While our main blog covers product updates, customer stories, and CI/CD best practices, we wanted a dedicated space for deeper technical content written by engineers, for engineers.

What to Expect

Here’s what you’ll find on this blog:

Technical Deep Dives

We’ll share detailed explorations of interesting technical challenges we’ve solved, from distributed systems problems to performance optimizations.

# Example: A simplified version of our job assignment algorithm
class JobAssigner
  def assign(job, available_agents)
    agents = available_agents
      .select { |a| a.matches_tags?(job.agent_query_rules) }
      .sort_by { |a| [a.job_count, a.last_assigned_at] }

    agents.first&.assign(job)
  end
end

Architecture Decisions

We’ll document significant architectural decisions and the reasoning behind them, helping you understand the trade-offs we considered.

Open Source Contributions

Buildkite maintains several open source projects, and we’ll share updates about our contributions to the broader ecosystem.

Lessons Learned

Not everything goes smoothly. We’ll share post-mortems and lessons learned from incidents, helping others avoid similar pitfalls.

Contributing

This blog is powered by Markdown files in our marketing repository. If you’re a Buildkite engineer, contributing is as simple as:

1. Create a new .md file in the content directory
2. Add your frontmatter and content
3. Open a pull request

We’re excited to share more of what we’re building. Stay tuned for our first technical deep dive coming soon!

Want to join us in building the future of CI/CD? Check out our careers page.