Derrick Farris
Founding Software Engineer at Medplum
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDerrick Farris is a founding software engineer based in San Francisco with a decade of experience building full-stack web applications, distributed systems, and blockchain platforms. He blends product-minded engineering—co-founding Pack and shaping developer experience—with low-level runtime work, including Node compatibility contributions to the high-profile Bun JavaScript runtime and validator/middleware improvements to the Hono web framework. At Medplum he’s focused on open-source, API-first EHRs using HL7 FHIR, while his background spans consensus protocol design, cryptography modules, and serverless deployment patterns. Known for teaching and team leadership, Derrick pairs a lifelong curiosity about how things work (he started programming at age 10) with practical expertise across Go, Node.js, C++, Python, and cloud infrastructure. He’s equally passionate about history, language, and education, often steering technical choices toward real-world usefulness and developer empowerment.
10 years of coding experience
5 years of employment as a software developer
Bachelor of Science - BS Information Technology and Systems, Bachelor of Science - BS Information Technology and Systems at The University of Texas at Dallas
English, Spanish, French, Chinese, Russian, Nepali
Github Skills (18)
javascript10
middleware10
routers10
validators10
testing10
jsonpath10
router10
typescript10
typescript-types10
web-framework10
nodejs10
typescripts10
deno9
bundler9
typesc8
Programming languages (10)
Github contributions (5)
oven-sh/bun
Nov 2022 - Jan 2023
Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one
Role in this project:
Back-end Developer
Back-end DeveloperContributions:57 reviews, 20 commits, 67 PRs in 2 months
Contributions summary:Derrick primarily contributed to the development of the `bun` JavaScript runtime by adding a `node:child_process` polyfill, fixing a typo in `spawnSync`, and enhancing the `execFileSync` functionality. Their work involved implementing and refactoring the child process functionality, including the addition of parameters, tests, and cleanup tasks. They also made improvements and bug fixes in areas such as process stream handling.
runtimeexecutablejavascriptpackage-manageresmodules
honojs/hono
Sep 2022 - Oct 2022
Web framework built on Web Standards
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:4 reviews, 3 commits, 10 PRs in 3 days
Contributions summary:Derrick primarily focused on enhancing the validator middleware of the Hono web framework. Their contributions included adding support for JSON array path validation, improving JSONPath implementation, and implementing array validation with `asArray`. Furthermore, the user implemented and updated numerous tests, including those for array type checking, malformed JSON requests, and general validation rules. They also modified and refactored code for caching and implemented other middleware components in the Deno distribution of the framework.
deno-deploycloudflarenode-jsesmodulesworkers
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