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johanbrandhorst/README.md

Hello 👋

I'm Johan, I've been doing open source since 2016, mostly in the Go ecosystem 🐻. I'm currently a maintainer 👨‍🔧 of:

  • The Go WebAssembly Port 🌐, allowing the use of Go in the browser and the backend.
  • The gRPC-Gateway 🌉, a HTTP/JSON <-> gRPC translation layer which is serving companies and open source projects such as etcd, Core OS, Cockroach DB, Chef and others.
  • Certify 👨‍⚖️, a Go in-process certificate manager that automatically issues and renews certificates for your application.

I'm also a contributor 👨‍💻 to:

I author blog posts 📰 on varying topics, mostly relating to Go and gRPC on my personal website.

I also frequently deliver technical talks 🗨️ at conferences, including GopherCon San Diego 🇺🇸, GopherCon UK 🇬🇧, dotGo 🇫🇷, GopherCon EU 🇪🇺, FOSDEM 🇧🇪 and more. I've also featured on Go Time 🎙️ on topics ranging from security 🛡️ to PostgreSQL 🐘. My personal website contains all the recordings and slides of my presentations.

Lastly, I'm frequently helping 👨‍🏫 beginners and experienced users alike to solve problems with their code and setup on Gophers slack, in particular on the topics that I have specific expertise, such as gRPC, protobuf and security. I can be found in the Gophers Slack under the username jbrandhorst. Come say hi!

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  1. grpc-ecosystem/grpc-gateway Public

    gRPC to JSON proxy generator following the gRPC HTTP spec

    Go 19.2k 2.3k

  2. grpc-ecosystem/go-grpc-middleware Public

    Golang gRPC Middlewares: interceptor chaining, auth, logging, retries and more.

    Go 6.5k 718

  3. golang/go Public

    The Go programming language

    Go 127k 18k

  4. grpc-postgres Public

    An example repo of how I like to use postgres with gRPC

    Go 293 44

  5. certify Public

    Automatic client and server certificate distribution and maintenance

    Go 471 36

  6. wasm-experiments Public

    Go 65 12

1,621 contributions in the last year

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Activity overview

Contributed to hashicorp/boundary, grpc-ecosystem/grpc-gateway, catzkorn/trail-tools and 54 other repositories
Loading A graph representing johanbrandhorst's contributions from April 21, 2024 to April 21, 2025. The contributions are 47% code review, 33% commits, 19% pull requests, 1% issues.

Contribution activity

April 2025

Created 1 repository
Opened 3 pull requests in 2 repositories

Created an issue in bazel-contrib/rules_go that received 4 comments

go-protoc-bin failed: error executing GoProtocGen command

Hi! I'm the maintainer of the grpc-gateway. It seems that something in v0.54.0 broke our protobuf generation. This auto-created PR is failing our b…

4 comments
26 contributions in private repositories Apr 4 – Apr 17
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