Robin Freyler
Software Developer (FOSS) at Self-employed
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolRobin Freyler is a systems-focused software developer with 11 years of experience building high-quality open-source tooling around WebAssembly, compilers, virtual machines and blockchain primitives. With roots in C/C++ and a strong Rust specialty, he has contributed to high-profile projects such as Wasmtime, wasm-tools and Polkadot/Substrate, improving runtime components, CI, fuzzing infra and core primitives. He combines low-level systems programming (virtual memory, OpenCL, SAT solving) with careful refactoring and tooling work—often fixing subtle build, benchmark and cross-platform issues that keep complex projects shipshape. Based in Berlin, he recently moved to independent FOSS development maintaining the wasmi runtime, bringing both production experience from Parity and a formal-methods-informed approach from his KIT background.
11 years of coding experience
8 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at Karlsruhe Institute of Technology (KIT)
German, English
Github Skills (49)
dependency-management10
substrate10
benchmark10
rust-wasm10
data-structure10
rust-macros10
wasmer10
polkadot-js10
ci-cd-pipeline10
cryptography10
blockchain10
rustfmt10
data-structures10
smart-contracts10
fuzzing10
Programming languages (15)
Github contributions (5)
wasmi-labs/wasmi
Jan 2021 - Jan 2023
WebAssembly (Wasm) interpreter.
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:54 releases, 248 reviews, 852 commits in 2 years
Contributions summary:Robin's commits focused on applying code style improvements, refactoring, and build process improvements for the WebAssembly (Wasm) interpreter. They applied clippy suggestions to improve code quality, formatted the code with rustfmt, and removed deprecated features. They also implemented windows and macOS support for virtual memory usage and added or enhanced CI/CD pipelines, thereby improving the build and deployment processes.
rustruntimewebassemblyinterpreterwasm
use-ink/ink
Dec 2018 - Sep 2022
Polkadot's ink! to write smart contracts.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 releases, 666 reviews, 756 commits in 3 years 10 months
Contributions summary:Robin was a back-end developer working on the `ink/ink` smart contract project. They primarily focused on implementing and improving the low-level primitives and data structures used to implement smart contracts. Their contributions involved adding new traits, and improving methods for the storage, hashmap, and vector implementations, alongside refactoring and restructuring existing code, adding support for a wide range of types, and fixing various bugs.
kusamasubstraterustethereumblockchain
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