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Arthur Bretas

@BretasArthur1

rust, solana, open source, building @cloak-ag

repos

followers

About

Arthur Bretas works on Solana blockchain infrastructure, focusing on low-level optimizations and tooling. Has contributed to exploring LLVM IR compilation pathways for Solana, including experiments with upstream alignment issues. Developed tooling to bridge Python and Solana's sBPF, generating LLVM IR and linking to the Solana runtime. Works with Rust and C in the Solana ecosystem, including proof-of-concept implementations of performance-focused libraries.

Insights

This Year

172

Commits

123

PRs

Issues

Reviews

Most Active In

surfpool

Scilla

Solana-Client-Extension

NorthStarSDK

Projects

24 original

fanout-client

Hedged Solana RPC client that races multiple providers and returns the first successful response.

Rust

C-Nocchio

PoC of Pinocchio for C

pylana

Uses Python to generate LLVM IR, compiles to bitcode, then links to sBPF using sbpf-linker

Python

Solana-Client-Extension

Rust

pinocchio-escrow

Solana Escrow using Pinocchio

Rust

anchor-amm

Rust

In Public Repos

RustLLVMPythonTypeScriptC

Signals

50+

External PRs merged

Languages

Rust86%

C5%

Python5%

Assembly5%

Skills

Technologies

SolanaAnchorRustWeb3RPC

Indicators

•Implements Solana program development using Anchor framework for on-chain AMM protocols
•Builds resilient RPC client infrastructure with multi-provider hedging and failover mechanisms
•Integrates Web3 primitives including SOL wallets and decentralized storage SDKs

Evidence

BretasArthur1/anchor-amm BretasArthur1/walrus-sol-sdk BretasArthur1/fanout-client

Coding Patterns

30 commits

Weekday-concentrated activity, peaks Tuesday-Thursday; most commits 7-8 PM; minimal weekend contributions

By Day

By Time (UTC)

12a

12p

Recent Interests

Assembly

Interests

Solana ecosystem (svm, fanout-client, pinocchio-bpf-starter)Rust tooling (security-framework, rsmap)Low-level systems (LLVM, BPF compilation)

Recent Solana RPC clients and BPF-related Rust libraries

Forked

Solana/BPF Infrastructure

Forks of bpf-linker, sbpf-linker, and playground suggest active experimentation with Solana bytecode compilation

Compiler & Systems Work

LLVM project fork indicates engagement with low-level compilation tooling

Application Frameworks

Beethoven fork aligns with Rust ecosystem exploration

Forking pattern reflects hands-on work with BPF/Solana tooling and compiler infrastructure rather than knowledge gathering

Working Styles

Exploration Focus

Execution Focus

Narrow Scope

Broad Scope

Curious and widely-engaged, discovering new tools and patterns across the ecosystem to expand project horizons.

Links

twitter·https://twitter.com/0x_arthurbretas linkedin·https://www.linkedin.com/in/arthur-bretas/github·github.com/BretasArthur1

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