Julio Merino
Principal Software Engineer at Snowflake
Redmond, Washington, United States
Summary
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Rockstar🎓
Top SchoolJulio Merino is a Principal Software Engineer with 20 years of experience building reliable, cross-platform systems at top-tier companies including Snowflake, Microsoft, and Google. He combines deep systems-level expertise—demonstrated by significant open-source work on projects like sshfs, nix-rust, and Bazel—with a pragmatic focus on maintainability, performance, and security. Julio has a strong background in OS and tooling improvements (adding syscall bindings in Rust, refining file-system caching, and optimizing build toolchains) and regularly bridges research-grade rigor with production engineering. Based in Redmond, he pairs technical leadership with a creative side as a “software artist” and writer aficionado, and brings the discipline of a long-distance runner and father of two to high-impact engineering teams.
20 years of coding experience
18 years of employment as a software developer
UPC Universitat Politècnica de Catalunya
English, Spanish, Catalan, Korean
Stackoverflow
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Github Skills (27)
libc10
c-language10
unix10
fuse10
build-system10
c1110
c1710
binding10
system-calls10
automation10
bazel10
macos10
automations10
rust10
cprogramming-language10
Programming languages (16)
Github contributions (5)
bazelbuild/bazel
Feb 2016 - Oct 2020
a fast, scalable, multi-language and extensible build system
Role in this project:
Back-end Developer / Automation Engineer
Back-end Developer / Automation EngineerContributions:10 reviews, 238 commits, 14 PRs in 4 years 8 months
Contributions summary:Julio's contributions focus on improving the build system, Bazel, by enhancing its C++ toolchain and managing compilation tasks. They've implemented fixes for issues, such as incorrect inclusion of C++ system headers and improving memory management. They also introduced new features, like the --experimental_local_lockfree_output flag, and optimized the process of file deletions to speed up the build cycle.
build-systembazelcorrectscalablemulti-language
nix-rust/nix
Sep 2018 - Apr 2019
Rust friendly bindings to *nix APIs
Role in this project:Back-end Developer
Back-end DeveloperContributions:10 commits, 9 PRs, 29 comments in 6 months
Contributions summary:Julio primarily contributed to the `nix-rust/nix` repository by adding wrappers for various *nix system calls. These additions included wrappers for `futimens(2)`, `utimensat(2)`, `utimes(2)`, `lutimes(2)`, `truncate(2)`, and `fchownat(2)`, as well as making `mode_t` and `time_t` public. The user also added related tests, demonstrating a focus on expanding and refining the library's system call bindings. This work expands the functionality of the Rust bindings to *nix APIs.
nixrustrust-bindingslibcunix
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