Company Overview
About BuildJet
BuildJet is a Tallinn, Estonia-based continuous integration (CI) performance platform — backed by Y Combinator (W23) with $500,000 raised from YC in 2023 — providing developer teams with GitHub Actions runners powered by gaming CPUs (AMD Ryzen and Intel Core processors optimized for high single-core clock speeds) that execute CI/CD builds 2x faster and at lower cost than GitHub's standard hosted runners, enabling companies to reduce their CI infrastructure spend and development cycle time simultaneously. Founded in 2022 by Adam Shiervani and Lian Duan and generating $330,000 in annual recurring revenue as of September 2025 with a 3-person team, BuildJet serves the developer community's need for faster and more affordable GitHub Actions compute.
Business Model & Competitive Advantage
BuildJet's gaming CPU approach addresses a counterintuitive mismatch in CI infrastructure economics: GitHub's hosted runners (which run CI workflows for millions of repositories) use cloud instance types optimized for server workloads — high core count, moderate clock speed Intel Xeon processors — while most CI builds are single-threaded compilation and test execution tasks that benefit more from high single-core clock speed than high core count. Gaming CPUs (AMD Ryzen 9, Intel Core i9) achieve 4-5+ GHz clock speeds optimized for sequential computational tasks — the same performance profile that makes them superior for gaming is what makes them faster for CI build compilation. BuildJet runs its own cloud infrastructure on top of these gaming CPUs rather than reselling cloud provider instances, enabling cost structures that undercut GitHub Actions pricing for equivalent or better performance.
Competitive Landscape 2025–2026
In 2025, BuildJet competes in the GitHub Actions runner and CI/CD performance optimization market with Depot (GitHub Actions-compatible CI cloud, $6M raised), Blacksmith (GitHub Actions performance, $10M raised), and Namespace Cloud (GitHub Actions acceleration) for GitHub Actions compute adoption. The GitHub Actions runner market has emerged as a distinct startup category — as GitHub Actions has become the dominant CI/CD platform (used by 10M+ developers), startups providing faster, cheaper, or more capable runner infrastructure have found product-market fit among teams whose build times and costs have grown with repository complexity. Y Combinator W23 backing connects BuildJet with the developer tooling investor community. The 3-person team achieving $330K ARR with minimal funding reflects strong capital efficiency for infrastructure startups. The 2025 strategy focuses on growing enterprise GitHub Actions customers with large runner fleets and high monthly CI spend, building the ARM runner option (for iOS/macOS and ARM-native build workloads), and expanding the integration with GitLab CI for the GitLab user base.
Open Positions
Reddit Discussions
Key Differentiators
Emerging Innovator
BuildJet is an emerging player bringing innovative solutions to the Infrastructure market.
Frequently Asked Questions
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