# BuildJet **Source:** https://geo.sig.ai/brands/buildjet **Vertical:** Infrastructure **Subcategory:** Cloud Services **Tier:** Emerging **Website:** buildjet.com **Last Updated:** 2026-04-14 ## Summary Tallinn Estonia GitHub Actions runner platform using gaming CPUs for 2x faster CI at lower cost; YC W23 $500K with $330K ARR competing with Depot and Blacksmith for CI/CD performance optimization infrastructure. ## Company Overview 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. 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. 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. ## Frequently Asked Questions ### What is BuildJet? BuildJet is a high-performance computing cloud company founded in 2022 in Tallinn, Estonia. They build a CI platform on gaming CPUs that makes GitHub Actions 2x faster and cheaper. ### What products and services does BuildJet offer? BuildJet offers a gaming CPU cloud infrastructure for continuous integration (CI) that makes GitHub Actions 2x faster and cheaper. They run their own cloud infrastructure on top of gaming CPUs specifically optimized for CI workloads. ### Who is BuildJet for? BuildJet targets developers and companies using continuous integration and GitHub Actions who need faster and more cost-effective CI pipeline execution. ### When was BuildJet founded? BuildJet was founded in 2022 and participated in Y Combinator's Winter 2023 batch. ### Where is BuildJet based? BuildJet is based in Tallinn, Estonia. ### Has BuildJet raised any funding? Yes, BuildJet raised a $500K seed round in 2023 from Y Combinator as part of their Winter 2023 batch. ### What are BuildJet's key achievements and metrics? BuildJet achieved $330K in revenue by September 2025 with only 3 employees, showing consistent revenue growth since their 2022 launch. Their platform delivers GitHub Actions that are 2x faster and cheaper than standard alternatives. ### What technology approach does BuildJet use? BuildJet built their own cloud infrastructure on top of gaming CPUs, leveraging high-performance gaming processors to optimize continuous integration workloads. This unique approach enables them to deliver faster and more cost-effective CI services. ### Who founded BuildJet? BuildJet was founded by Adam Shiervani and Lian Duan in 2022. ### What are BuildJet's recent developments? BuildJet raised $500K in seed funding in 2023 from Y Combinator and has shown consistent revenue growth since launch, reaching $330K in revenue by September 2025. They continue to operate with a lean team of 3 employees while scaling their gaming CPU cloud CI platform. ## Tags b2b, platform, cloud-native, infrastructure, developer-tools, saas --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*