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Kor Nielsen

PROFILE

Kor Nielsen

Worked on build system reliability and CI automation across lowRISC/opentitan and chipsalliance/caliptra-sw repositories. Improved Bazel build flow by enabling non-root module compatibility, simplifying autogen rule directory handling, and ensuring deterministic labeling, which reduced workspace failures and improved onboarding. In chipsalliance/caliptra-sw, developed a Go-based command-line tool to automate artifact downloads from GitHub workflow runs, streamlining runner image updates. Addressed GitHub Actions cache issues in size-history by refining HTTP client logic and Azure blob storage integration, restoring cache reliability and accelerating builds. Leveraged Bazel, Go, and Rust to enhance build reproducibility, CI stability, and cross-team development efficiency.

Overall Statistics

Feature vs Bugs

33%Features

Repository Contributions

7Total
Bugs
2
Commits
7
Features
1
Lines of code
805
Activity Months2

Work History

June 2025

2 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for chipsalliance/caliptra-sw: Key features delivered and major bugs fixed with tangible business impact. Implemented Rtool: Artifact Download Subcommand to automate artifact retrieval from GitHub workflow runs, enabling automated updates of runner images. Fixed GitHub Actions cache issues in size-history, restoring cache reliability and speeding builds. These efforts improved CI automation, build stability, and release readiness, while enhancing cross-team collaboration and code quality.

January 2025

5 Commits

Jan 1, 2025

Month: 2025-01 — Focused on stabilizing the Bazel build flow for the lowRISC/opentitan repo by delivering non-root module compatibility and strengthening build-system robustness. The work reduced non-root workspace failures, improved patch handling and autogen behavior, and laid groundwork for more reproducible CI and developer onboarding.

Activity

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Quality Metrics

Correctness92.8%
Maintainability91.4%
Architecture91.4%
Performance82.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

BazelBzlGoRustStarlark

Technical Skills

BazelBuild System ConfigurationBuild SystemsCI/CDCloud StorageCommand-line ToolsGitHub ActionsGo DevelopmentHTTP ClientRust

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

lowRISC/opentitan

Jan 2025 Jan 2025
1 Month active

Languages Used

BazelBzlStarlark

Technical Skills

BazelBuild System ConfigurationBuild Systems

chipsalliance/caliptra-sw

Jun 2025 Jun 2025
1 Month active

Languages Used

GoRust

Technical Skills

CI/CDCloud StorageCommand-line ToolsGitHub ActionsGo DevelopmentHTTP Client