Alexey Zabelin
CA, Russia
Summary
👤
SeniorAlexey Zabelin is a software engineer based in California with 11 years of experience building reliable backend systems and developer tooling. He specializes in Haskell (5+ years) and reaches for Rust when appropriate, applying functional-first thinking to production services, APIs, and integrations. As an early engineering hire at Mercury he designed and documented the public REST API, built the APNs backend, and led multiple third‑party bookkeeping and partner integrations while mentoring cross-functional teams. His open-source contributions to prominent Haskell projects like Stackage and Stack show a strong focus on build infrastructure, dependency management, and CI robustness. Comfortable across TypeScript, React, Yesod, PostgreSQL and AWS, he blends pragmatic engineering with an eye for developer experience. Colleagues would note his knack for turning thorny infrastructure problems into repeatable, well-documented solutions.
11 years of coding experience
Stackoverflow
65reputation
3kreached
1answer
2questions
Github Skills (27)
docker10
package-management10
scripting10
debian10
bash10
build-system10
dockers10
cicd10
build-automation10
haskell10
data-structure9
git9
compiler-options9
linux9
compile9
Programming languages (15)
Github contributions (5)
commercialhaskell/stackage
Mar 2018 - Jan 2023
Stable Haskell package sets: vetted consistent packages from Hackage
Role in this project:
DevOps Engineer
DevOps EngineerContributions:1 review, 684 commits, 307 PRs in 4 years 11 months
Contributions summary:Alexey primarily focused on infrastructure and build process modifications within the Stackage repository. Their contributions included changes to the `debian-bootstrap.sh` script, adding and removing software packages like LLVM, and configuring the build environment. The user also updated the build scripts to point to the correct commercialhaskell image and made several reverts, likely related to build and CI/CD system updates, as well as installation of specific versions of compilers and development tools. These updates reflect a focus on configuring the build environment and dependencies for Haskell package sets.
hackagehaskell
commercialhaskell/stack
Jan 2017 - Aug 2017
The Haskell Tool Stack
Role in this project:Back-end Developer
Back-end DeveloperContributions:9 commits, 3 PRs, 17 comments in 7 months
Contributions summary:Alexey contributed to the Haskell Tool Stack by addressing dependency installation issues and providing helpful warnings for different operating systems. They improved the build process by implementing changes related to package indexing and GitSHA1 handling, which involved modifying core build plan structures and fetch processes. Furthermore, the user updated documentation to improve user understanding of the upgrade process.
haskell
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