Robert Klotzner
Softwareingenieur at Robert Klotzner
Earth, Texas, Austria
Summary
🤩
Rockstar🎓
Top SchoolRobert Klotzner is a systems-focused software engineer with 14 years of experience building resilient, decentralized p2p systems and low-level tooling. He brings deep systems and compiler knowledge from contributions to projects like LDC and the D compiler, and blockchain networking work for Polkadot/Substrate, alongside practical experience in C++, Qt, and embedded Linux. Recently he’s been exploring Rust, Haskell, and Nix-based workflows, blending strong static-language discipline with modern distributed architectures. His work often spans networking, build systems, and developer tooling—improving robustness and performance in production-grade open-source projects. Based in Austria, he combines academic electrical engineering foundations with hands-on product and infrastructure delivery, and prefers designs that let users own their data and remain operational even when the broader Internet is down.
14 years of coding experience
8 years of employment as a software developer
Vienna University of Technology
Github Skills (76)
programming-language10
obelisk10
webview10
mobile-development10
nix10
clientside10
http10
databases10
templater10
webpages10
file-operations10
web-content10
javas10
network-protocol10
dt10
Programming languages (18)
Github contributions (5)
paritytech/polkadot-sdk
Aug 2023 - Apr 2025
The Parity Polkadot Blockchain SDK
Role in this project:
Back-end Developer
Back-end DeveloperContributions:540 reviews, 66 PRs, 202 pushes in 1 year 7 months
Contributions summary:Robert primarily contributed to the back-end development of the Parity Polkadot Blockchain SDK, focusing on the network bridge, dispute distribution, and availability distribution subsystems. Their work included implementing and refining request/response infrastructure for core functionalities like collation and PoV fetching, as well as integrating these changes with the underlying network service and other subsystems. The user also focused on code quality, including the restructuring, benchmarking, and improving the performance of various components within the project.
blockchaincumuluspolkadotsubstrate
paritytech/polkadot
Feb 2021 - Jan 2023
Polkadot Node Implementation
Role in this project:Back-end Developer & Documentation Specialist
Back-end Developer & Documentation SpecialistContributions:1193 reviews, 233 commits, 328 PRs in 1 year 11 months
Contributions summary:Robert primarily worked on documenting and fixing typos/misspellings in the Polkadot node implementation. They identified and corrected errors in the documentation, particularly within the code comments. Additionally, they made minor refactorings and code clarifications within the network bridge, making the code easier to understand. Their work included improving the clarity of parameters used in network messages.
substraterustblockchainparitypolkadot
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