Drew Haven
Principle Engineer at Terakoda
Sacramento, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDrew Haven is a principal engineer with 15 years of experience building and leading full-stack teams and projects across startups and large tech companies. He combines deep practical engineering—C++, Haskell, back-end services and scalable web apps—with a decade-long passion for functional programming and type theory, evidenced by Haskell services and effect-system migrations at FOSSA. Drew has repeatedly driven reliability and deployment improvements (auto-scaling, SOC2 support, on-call ownership) while shipping customer-facing rewrites and smooth rollouts to thousands of clients. An active open-source contributor, he improved dependency-analysis tooling in the widely used fossa-cli, tackling tricky file-discovery and testing challenges. Based in Sacramento, he blends hands-on coding with mentoring and architecture, favoring testable, correct designs that deliver clear user value.
15 years of coding experience
18 years of employment as a software developer
University of California Santa CruzMS, Computer Science, MS, Computer Science at Stanford University
Github Skills (2)
dependency-analysis10
haskell10
Programming languages (10)
Github contributions (5)
fossas/fossa-cli
Mar 2022 - Nov 2022
Fast, portable and reliable dependency analysis for any codebase. Supports license & vulnerability scanning for large monoliths. Language-agnostic; integrates with 20+ build systems.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:79 reviews, 76 commits, 56 PRs in 8 months
Contributions summary:Drew primarily focused on improving the dependency analysis capabilities of the `fossa-cli` tool. Their work involved resolving symlink loop issues during file discovery and optimizing path handling. The user also made significant contributions to the testing framework, including refactoring tests and converting them to use `Test.Effect`. They improved overall code quality through formatting and linting fixes and added changelog entries to document the changes.
agnosticcodebaseopen-source-licensinglanguage-agnosticportable
periodic/qmk_firmware
Sep 2020 - Mar 2025
Open-source keyboard firmware for Atmel AVR and Arm USB families
Contributions:7 pushes, 2 branches in 4 years 6 months
rp2040firmwareavratmelusb
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.