George-mihai Pisaltu
Software Engineer at Parity Technologies
Bucharest, Romania
Summary
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Rockstar🎓
Top School
Top expert inRust-Based Software Development
George-Mihai Pisaltu is a Rust-focused software engineer with six years of experience building high-performance backend and systems software at Parity, CasperLabs, and Amazon. He has contributed to critical open-source projects like Firecracker and the Casper node, improving microVM performance, streamlining code paths, and extending deploy metadata for more robust JSON-RPC behavior. At Parity he works on Substrate/Polkadot tooling and has practical experience refactoring benchmarking workflows and fixing runtime issues in collator modules. Comfortable across low-level systems, blockchain nodes, and RPC/storage layers, he blends production-grade reliability with protocol-aware design. Based in Bucharest, he also publishes a Polkadot address on GitHub, indicating active participation in blockchain ecosystems beyond code.
6 years of coding experience
4 years of employment as a software developer
Bachelor of Engineering - BE, Computer Science, Bachelor of Engineering - BE, Computer Science at Universitatea POLITEHNICA din București
Github Skills (19)
json-rpc10
substrate10
firecracker10
system-programming10
storage10
polkadot-js10
blockchain10
rust10
polkadot10
api-design9
benchmark9
cas9
benchmarking9
performance-optimization9
casperjs9
Programming languages (4)
Github contributions (5)
firecracker-microvm/firecracker
Jul 2019 - Feb 2022
Secure and fast microVMs for serverless computing.
Role in this project:
Back-end Developer & Systems Engineer
Back-end Developer & Systems EngineerContributions:498 reviews, 214 commits, 117 PRs in 2 years 7 months
Contributions summary:George-mihai primarily focused on improving the Firecracker microVM's performance and stability. They addressed CPU brand string issues, removing unnecessary code and dependencies to streamline operations and reduce bloat. The user also enhanced the micro_http implementation, adding support for new methods and headers. Furthermore, they implemented new API calls to support balloon, logging, and other device configurations.
containerssecureminimalistrustserverless
paritytech/polkadot-sdk
Aug 2023 - Mar 2025
The Parity Polkadot Blockchain SDK
Role in this project:Backend Developer
Backend DeveloperContributions:541 reviews, 42 PRs, 233 pushes in 1 year 6 months
Contributions summary:George-mihai primarily contributed to the `cumulus/pallets/collator-selection` module within the Polkadot SDK. Their work involved refactoring the benchmarking setup to use `benchmarking::v2`, utilizing the `extrinsic_call` syntax, and modifying the code to use the new benchmarking version. They also addressed a crash issue in the Asset Hub collator and made improvements to the Identity pallet. The user demonstrates skills in the Substrate framework and blockchain development.
blockchaincumuluspolkadotsubstrate
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