KimĀ Brandwijk
Independent Security Researcher at Self-employed
Mexico
Summary
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Rockstarš
Top SchoolKim Brandwijk is an independent security researcher and seasoned software architect with over a decade of experience spanning .NET, mobile, and blockchain security. Rooted in a lifelong fascination with computing since a Commodore 64, Kim progressed from MCSD-certified .NET and BizTalk architect roles to leading mobile teams and developer success at Expo. Recently focused on DeFi smart contract security, he specializes in oracle mechanics, liquidation logic, and cross-chain vulnerabilities across Solana (Rust) and EVM (Solidity), and is active on platforms like Immunefi and Code4rena. Kim is also an active open-source contributor to prominent projects in the Expo ecosystem and GraphQL tooling, improving CLI tooling, iOS components, and server middleware. He blends deep system-architecture experience with hands-on engineering across full-stack, mobile, and blockchain domains, often surfacing subtle protocol-level risks before they become incidents. Based in Mexico, he pairs consultancy-level design with practical fixes and developer-facing improvements.
10 years of coding experience
15 years of employment as a software developer
High School, Gymnasium, High School, Gymnasium at Luzac CollegeArchitecture, Architecture at Delft University of Technology
English, Dutch
Github Skills (45)
javascript10
ios10
deploying10
npm10
react-native10
app-framework10
expo10
command-line-interface10
typescript10
wpgraphql10
cicd10
android10
wordpress-graphql10
build-automation10
typescript-types10
Programming languages (23)
Github contributions (5)
expo/expo-cli
Jul 2021 - Aug 2022
Tools for creating, running, and deploying universal Expo and React Native apps
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:91 reviews, 46 commits, 46 PRs in 1 year 1 month
Contributions summary:Kim primarily contributed to the `expo-cli` tool, addressing issues and implementing features related to iOS project configuration, documentation generation, and dependency management. They fixed bugs in URL parsing for iOS projects and addressed an issue with suppressing warnings on login and logout. Moreover, the user worked on refactoring the `xdl` utility to remove the use of Joi and adding a new option for fixing dependencies in the doctor command. They also addressed issues related to the usage of `npm pack` and deprecated the `diagnostics` command.
deployingreactreact-nativewebpacknative-apps
expo/eas-cli
Nov 2021 - Sep 2022
Fastest way to build, submit, and update iOS and Android apps
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:83 reviews, 23 commits, 22 PRs in 10 months
Contributions summary:Kim primarily worked on the `eas-cli` project, contributing to various aspects of the Expo ecosystem. Their work included implementing new features, such as the `prebuildCommand` configuration for build profiles, and enhancing the build process by adding JSON output for started builds. They also addressed warnings and made minor code adjustments, for example, improving the wording on build warnings related to bundle identifiers. Furthermore, the user added support for sourcemaps on update builds.
manifestapp-storeappstorefastestsubmit
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