# Jan Svoboda

> Developer Tools at Apple

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/jansvoboda

Senior software engineer specializing in programming languages and compilers.

## Work Experience
### Senior Software Engineer @ Apple
Jan 2023 – Present | Cupertino, California, United States
• Working on the Clang & Swift compilers to improve build performance.

### Software Engineer @ Apple
Jan 2020 – Jan 2023
• Productized “explicitly-built Clang modules”, a major new feature in Xcode 16.
• Reduced build times by ~10%, enabled compilation caching & distributed builds.
• Improved the soundness & performance of Clang’s modular dependency scanner.
• Ensured smooth adoption experience by working with teams across the company.
• Mentored a Google Summer of Code project, presented at the EuroLLVM conference.
• Became the code owner of Clang’s command line interface & related infrastructure.

### Software Engineer @ Codasip
Jan 2019 – Jan 2020
• Extended the compiler generator in Codasip Studio, a tool for processor design.
• Engineered a new generator of LLVM cost-model based on the processor model.
• Enabled vectorization and reduced code size by over 13% for a custom RISC core.

### Google Summer of Code Student @ Apple
Jan 2019 – Jan 2019
• Spearheaded the transition to a better front-end architecture of the Swift compiler.
• Rewrote parts of the parser to produce only lossless source code representation.
• Laid the groundwork for performance gains in IDE contexts like code completion.

### Software Engineer @ Loft Digital
Jan 2016 – Jan 2018
• Integrated a payment gateway into the main checkout process of Cyclescheme.
• Halved the number of database queries made on each request for authentication.
• Implemented new features in a reliable fashion through test-driven development.


## Education
### Master of Engineering in Computer Engineering
Brno University of Technology

### Exchange Student in Computer Science
Technical University of Munich

### Bachelor of Engineering in Computer Engineering
Brno University of Technology


## Contact & Social
- LinkedIn: https://linkedin.com/in/jansvoboda11

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Source: https://flows.cv/jansvoboda
JSON Resume: https://flows.cv/jansvoboda/resume.json
Last updated: 2026-03-29