Kevin Leimkuhler
Software Engineer at Grafana Labs
Denver, Colorado, United States
Summary
🤩
Rockstar🎓
Top SchoolKevin Leimkuhler is a software engineer with 11 years of experience building high-performance, observability-focused infrastructure and distributed systems from Denver. He’s a seasoned Rust and backend developer who has contributed to prominent open-source projects like Linkerd, Tokio, Mio, and Crossbeam—work that spans service-mesh proxy internals, async runtimes, Unix domain socket support, and concurrency primitives. At Buoyant he solved real-world production problems (automatic protocol detection, UDS support, lease-based Kubernetes controllers) that informed upstream library design and prevented subtle networking failures. Kevin combines deep systems-level troubleshooting with practical DevOps sensibilities, having refactored installers and Helm charts for smoother deployments. Now at Grafana Labs, he continues to focus on reliable, observable cloud-native systems while bringing an engineer’s eye for API ergonomics and cross-platform correctness.
11 years of coding experience
8 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Penn State UniversityDebated against students from around the world about international conflicts. Repeat honor roll from freshmen to senior year. Outstanding Achievement in PSSA's award. Service and Leadership award. Certified Oral Presenter., Debated against students from around the world about international conflicts. Repeat honor roll from freshmen to senior year. Outstanding Achievement in PSSA's award. Service and Leadership award. Certified Oral Presenter. at Conestoga High School
Github Skills (56)
asynchronous10
algorithm10
service-mesh10
algorithms10
kubernetes10
docker10
parallel10
non-blocking10
async10
atomics10
testing10
http10
channel10
io10
dockers10
Programming languages (9)
Github contributions (5)
linkerd/linkerd2-proxy
Jan 2019 - Nov 2022
A purpose-built proxy for the Linkerd service mesh. Written in Rust.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:303 reviews, 27 commits, 180 PRs in 3 years 10 months
Contributions summary:Kevin primarily contributed to the core functionality of the Linkerd2 proxy, a service mesh written in Rust. Their work involved implementing features for the outbound router, specifically focusing on how the proxy handles the `l5d-dst-override` header to direct traffic. They also addressed metrics by removing the destination address from endpoint labels and increased the router capacity. Furthermore, the user added functionality for setting the `l5d-remote-ip` header.
linkerdproxyrustservice-meshcncf
tokio-rs/mio
Oct 2019 - Apr 2020
Metal I/O library for Rust.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 reviews, 40 commits, 46 PRs in 6 months
Contributions summary:Kevin primarily contributed to adding support for Unix Domain Sockets (UDS) to the `mio` library. This involved implementing the necessary networking primitives (`UnixDatagram`, `UnixListener`, and `UnixStream`) and integrating them with the existing system. The user also added tests for the UDS functionality, ensuring compatibility and correct behavior. Furthermore, the commits include refactoring and cleanup related to the UDS implementation and related readiness events.
rustnon-blockingasynchronousnetworking
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