matter-labs/foundry-zksync
Nov 2024 – Apr 2025
6 Months active
Languages Used
RustSolidityTOMLYAMLJavaScript
Technical Skills
Build System ConfigurationBuild SystemsCompiler ManagementDependency ManagementRustSecurity Auditing
Karrq
PROFILE
Karrq
Francesco contributed to the matter-labs/foundry-zksync repository, focusing on enhancing deployment reliability, security, and developer productivity for zkSync smart contract workflows. Over six months, he delivered features such as deploy-time library linking, robust bytecode retrieval with retry logic, and upstream synchronization to support evolving toolchains. His work involved deep Rust and Solidity development, including compiler integration, modular refactoring, and CI/CD optimization using GitHub Actions. By addressing transaction management, dependency security, and performance bottlenecks, Francesco improved system maintainability and runtime efficiency. His engineering demonstrated a strong grasp of backend development, error handling, and the complexities of EVM-compatible blockchain tooling.
Overall Statistics
Feature vs Bugs
79%Features
Repository Contributions
23Total
Bugs
3
Commits
23
Features
11
Lines of code
17,805
Activity Months6
Your Network
44 people
Work History
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025: Delivered reliability improvements for bytecode retrieval in matter-labs/foundry-zksync by adding a retry mechanism for zks_getBytecodeByHash RPC calls to zkSync forks. Implemented a retry loop in code_by_hash with configurable retry_count and retry_delay constants, reducing transient RPC failures. Commit: 49aa003f113961ccbe9e471829bd0615e9e1a5c3 (feat: retry `zks_getBytecodeByHash` failures (#1000))
1 Commits • 1 Features
Apr 1, 2025April 2025: Delivered reliability improvements for bytecode retrieval in matter-labs/foundry-zksync by adding a retry mechanism for zks_getBytecodeByHash RPC calls to zkSync forks. Implemented a retry loop in code_by_hash with configurable retry_count and retry_delay constants, reducing transient RPC failures. Commit: 49aa003f113961ccbe9e471829bd0615e9e1a5c3 (feat: retry `zks_getBytecodeByHash` failures (#1000))
April 2025
March 2025
8 Commits • 4 Features
Mar 1, 2025Summary for March 2025: The Foundry project for matter-labs/foundry-zksync advanced platform stability, performance, and developer productivity. Delivered a comprehensive Foundry upgrade with dependency bumps, Anvil hardfork support, and enhanced cheatcodes/CLI, supported by new tests and internal refactors to improve usability and reliability. Implemented key runtime performance improvements in ZKSync, including caching of system contracts, refactored DB operations, improved call tracking and calldata reuse, and corrected console log parsing during inspection. Strengthened release reliability through CI/CD workflow improvements to reduce premature issue creation and add configurable retry controls. Addressed critical bugs including a targeted ZK-Warp cheatcode fix to only alter block.timestamp with tests, and Humantime advisory handling to prevent build issues. Expanded test coverage with ZkEmail integration tests to validate email-recovery, email-signer, and JWT-based transactions. These efforts yield faster, more reliable releases, better runtime efficiency, and stronger developer experience.
March 2025
8 Commits • 4 Features
Mar 1, 2025Summary for March 2025: The Foundry project for matter-labs/foundry-zksync advanced platform stability, performance, and developer productivity. Delivered a comprehensive Foundry upgrade with dependency bumps, Anvil hardfork support, and enhanced cheatcodes/CLI, supported by new tests and internal refactors to improve usability and reliability. Implemented key runtime performance improvements in ZKSync, including caching of system contracts, refactored DB operations, improved call tracking and calldata reuse, and corrected console log parsing during inspection. Strengthened release reliability through CI/CD workflow improvements to reduce premature issue creation and add configurable retry controls. Addressed critical bugs including a targeted ZK-Warp cheatcode fix to only alter block.timestamp with tests, and Humantime advisory handling to prevent build issues. Expanded test coverage with ZkEmail integration tests to validate email-recovery, email-signer, and JWT-based transactions. These efforts yield faster, more reliable releases, better runtime efficiency, and stronger developer experience.
February 2025
6 Commits • 1 Features
Feb 1, 2025February 2025 highlights: Security hardening and ZkSync integration for Foundry ZKSync. Focused on security posture, code readability, and transaction reliability to enable scalable ZkSync workflows for the business. Delivered concrete changes with measurable impact on security, maintainability, and feature readiness for ZkSync-enabled operations.
6 Commits • 1 Features
Feb 1, 2025February 2025 highlights: Security hardening and ZkSync integration for Foundry ZKSync. Focused on security posture, code readability, and transaction reliability to enable scalable ZkSync workflows for the business. Delivered concrete changes with measurable impact on security, maintainability, and feature readiness for ZkSync-enabled operations.
February 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025Month: 2025-01 | Repository: matter-labs/foundry-zksync Overview: Focused feature delivery to enhance deployment reliability for zk-solidity contracts by enabling deploy-time linking of libraries and factory dependencies, with zkSync-compatible deployment support and updated artifact/compiler handling.
January 2025
1 Commits • 1 Features
Jan 1, 2025Month: 2025-01 | Repository: matter-labs/foundry-zksync Overview: Focused feature delivery to enhance deployment reliability for zk-solidity contracts by enabling deploy-time linking of libraries and factory dependencies, with zkSync-compatible deployment support and updated artifact/compiler handling.
December 2024
2 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for matter-labs/foundry-zksync focusing on delivering upstream synchronization, API surface improvements, and CI performance gains. Key outcomes include aligning with upstream changes across components, refining path remapping, improving cheatcodes (bytes4 data and delegatecall in prank), updating Soldeer and dependencies, and introducing new APIs such as anvil_getIntervalMining with refined cast storage output options. CI improvements upgraded the runner to ubuntu-22.04-github-hosted-16core, significantly reducing test times and accelerating feedback loops.
2 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for matter-labs/foundry-zksync focusing on delivering upstream synchronization, API surface improvements, and CI performance gains. Key outcomes include aligning with upstream changes across components, refining path remapping, improving cheatcodes (bytes4 data and delegatecall in prank), updating Soldeer and dependencies, and introducing new APIs such as anvil_getIntervalMining with refined cast storage output options. CI improvements upgraded the runner to ubuntu-22.04-github-hosted-16core, significantly reducing test times and accelerating feedback loops.
December 2024
November 2024
5 Commits • 2 Features
Nov 1, 2024Monthly summary for 2024-11 - matter-labs/foundry-zksync initiatives focused on upgrading the ZKSolc toolchain, enabling external library linking, and hardening dependency security. Delivered updates aligned with the latest toolchain capabilities, improved security posture, and reduced noise in advisory scanning.
November 2024
5 Commits • 2 Features
Nov 1, 2024Monthly summary for 2024-11 - matter-labs/foundry-zksync initiatives focused on upgrading the ZKSolc toolchain, enabling external library linking, and hardening dependency security. Delivered updates aligned with the latest toolchain capabilities, improved security posture, and reduced noise in advisory scanning.
Activity
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Quality Metrics
Correctness90.4%
Maintainability90.2%
Architecture89.8%
Performance87.0%
AI Usage22.6%
Skills & Technologies
Programming Languages
JavaScriptRustSolidityTOMLYAML
Technical Skills
Backend DevelopmentBuild System ConfigurationBuild SystemsBuild ToolsCI/CDCLI DevelopmentCode OrganizationCode RefactoringCompiler DevelopmentCompiler ManagementDatabase OptimizationDebuggingDependency ManagementEVMError Handling
Repositories Contributed To
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