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Mathieu Hofman

PROFILE

Mathieu Hofman

Mathieu developed and maintained core features for the Agoric/agoric-sdk repository, focusing on smart contract deployment, EVM integration, and portfolio management. He engineered robust backend systems using TypeScript and JavaScript, implementing secure wallet flows, EIP-712 typed data handling, and cross-chain orchestration. His work included optimizing build pipelines, enhancing telemetry and observability, and modernizing type safety across distributed systems. Mathieu’s technical approach emphasized modular programming, rigorous testing, and maintainable code, addressing reliability and upgrade challenges in blockchain environments. By integrating tools like Docker and Viem, he improved deployment efficiency and ensured compatibility with evolving Web3 and smart contract standards.

Overall Statistics

Feature vs Bugs

77%Features

Repository Contributions

211Total
Bugs
22
Commits
211
Features
73
Lines of code
36,261
Activity Months13

Work History

January 2026

40 Commits • 28 Features

Jan 1, 2026

January 2026 — Agoric-sdk: Key outcomes and business value Key features delivered: - EVM handler vstorage types and Viem utilities, including isHex export, enabling consistent EVM state handling and tooling. - Permit2 integration in orchestration: helpers and ABI definitions to support secure, permissioned portfolio orchestration. - Portfolio API enhancements: permit details extraction logic and default ymax operation type names, improving correctness and UX. - EVM wallet interactions: added EVM wallet message helpers, EVM Wallet handleMessage, and openPortfolioFromEVM flow. - EVM handleOperation refactor to named arguments for clarity and maintainability; publish deadline in EIPMessageUpdate. Major bugs fixed: - Ensure EVM message deadline hasn't passed to prevent late processing. - Enforce deposit of USDC on EVM open to guarantee funded opens. - Enforce EVM withdraw of USDC token for correct asset flows. - Register GMP makeAccount transaction before sending to improve reliability of account creation. Overall impact and accomplishments: - Strengthened reliability and security of EVM-enabled workflows, enabling more robust portfolio operations and governance flows. - Improved interoperability via Permit2 and GMP integrations, with clearer operation semantics and improved testing coverage. - Enhanced production-readiness with more deterministic messaging deadlines and asset flow protections. Technologies/skills demonstrated: - EVM integration patterns, Viem tooling, and vstorage types; isHex export usage. - Permit2 integration theory and ABI handling; GMP-based deposit/create flows. - EIP-712 domain handling, named-args refactor, and test modernization (snapshot tests). - TypeScript/SDK engineering for orchestration, portfolios, and EVM facets.

December 2025

5 Commits • 2 Features

Dec 1, 2025

Month: 2025-12 — concise monthly summary for Agoric/agoric-sdk focusing on Viem integration and portfolio management improvements. Delivered two main features with test coverage, with no major bugs fixed reported in this data. Overall impact includes improved maintainability, compatibility with external dependencies, and strengthened portfolio deployment workflows. Demonstrates strong capability in integrating typed data handling and testing for complex multi-party interactions.

November 2025

14 Commits • 3 Features

Nov 1, 2025

November 2025 focused on delivering robust Smart Wallet capabilities, strengthening reliability through targeted bug fixes, and laying groundwork for future wallet flows, while improving code quality and maintainability across the agoric-sdk repo. Key work delivered in Agoric/agoric-sdk advanced wallet testing, invocations, storage, and typing/test infrastructure, aligning with product goals of reliability, backward compatibility, and developer productivity.

October 2025

39 Commits • 12 Features

Oct 1, 2025

October 2025 delivered core platform capabilities and reliability enhancements across the SDK, 3-proposals, and endo. Notable features include Portfolio Deploy core enhancements (standalone core proposal for deliverContractControl, privateArgs handling, contract-name support, getUpgradeKit integration), Boot: combineProposals tool, A3P ymax1 beta test, and major type/marshaller work. A modernization wave introduced EMarshaller, remoteMarshaller with a caching layer, and a RemoteMarshaller caching wrapper, paired with extensive test coverage improvements (inter-protocol and kmarshal tests). Significant repo refactors and a TypeScript upgrade improved maintainability, along with ESLint rule updates. Major bug fixes targeted build/runtime reliability: publish bundle errors are now throwables; synthetic payloads and publish bundle info are confirmed passable. Additional fixes in Endo/Bundle-source ESLint coverage further reduce risk in production.

September 2025

23 Commits • 7 Features

Sep 1, 2025

September 2025 monthly summary: Across Agoric and Endo projects, delivered high-impact features, reliability improvements, and stronger type safety. Key achievements include Synthetic-chain CLI enhancements, Dockerfile and image build optimization, CI/CD workflow enhancements, robust ContractControl lifecycle and upgrade enhancements in agoric-sdk, and remotable type system cleanup in endo. These efforts reduced release risk, cut pipeline times, and improved contract governance and developer experience.

August 2025

18 Commits • 3 Features

Aug 1, 2025

In August 2025, delivered targeted feature work, reliability improvements, and maintainability improvements across two core repos (agoric-sdk and agoric-3-proposals). Focused on governance messaging interoperability with Cosmos Amino, CI pipeline robustness, and build/tooling stability, resulting in stronger production readiness and faster governance cycles.

July 2025

3 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary focusing on strengthening transcript management and archiver reliability in the Agoric SDK. Delivered synchronous transcript export and span rollover completion guarantees to prevent data loss and inconsistencies. Refactored archiver temporary file cleanup to be asynchronous with correctly wired dependencies, and expanded test coverage to validate synchronous span closure, logging, and rollover data integrity. These changes improve end-to-end data integrity, operational reliability, and observability for transcript handling in the swing-store layer.

June 2025

12 Commits • 4 Features

Jun 1, 2025

June 2025 performance and capability enhancements across Agoric/agoric-sdk and endojs/endo focused on reliability, type safety, and developer productivity. Delivered caching-based performance improvements for remote marshalling, standardized remote object representations across packages, and strengthened type safety in daemon and transport layers. Expanded and stabilized test coverage and mocks to reflect evolving remote interfaces, enabling safer API evolution and easier maintenance. The combined work reduces latency in critical remote paths, mitigates runtime errors due to uncertain promise lifecycles, and positions the SDKs for scalable, future-proof growth.

May 2025

8 Commits • 1 Features

May 1, 2025

May 2025 monthly summary for Agoric/agoric-sdk focusing on key features delivered, critical bug fixes, and overall impact. Highlights include: (1) Build system optimization and internal marshalling improvements: consolidated build and internal refactorings to boost Docker build efficiency, type safety, and marshalling performance. Notable changes include Dockerignore refinements, Dockerfile cleanup, internal type def refinements, and marshalling helpers. Commit highlights: 1624efa52e582603f97e942d1af240b6a19f68ec; 616d2640b744075c6cf1039585b2abfa0d3f8f66; 0de50d5a1a26678905bc1909340f7c4bb2e3db3f; a180b08d3b62aff85149705068b6897f868452c5; 3d52812cb4cbdbbc2ad169e99bea1c7c0d107b02. (2) Telemetry flight recorder reliability and performance enhancements: addressed IO bottlenecks, enabled asynchronous reads, ensured data flush to disk, and corrected byte counts during reads. Commit highlights: b7a19dd9c106d9b31e6f9188f5d4df0bbb5132bf; d2702028d77c06f3b4de91ca711a3c45c685a477; bfbacb2b9f8de36f8f66b8cba8a88603fb7225e2. (3) Overall impact: improved build reliability and deployment efficiency, enhanced observability through a more reliable telemetry path, and stronger type safety and modularity in the SDK. (4) Technologies/skills demonstrated: Docker tooling, build pipeline optimization, TypeScript/internal marshal refactoring, asynchronous IO, disk flush semantics, and telemetry subsystem reliability.

April 2025

14 Commits • 4 Features

Apr 1, 2025

April 2025 (2025-04) focused on reliability, upgrade readiness, and build stability across the Agoric SDK. Delivered targeted improvements across SwingSet tests, acceptance/state-sync, build tooling, and upgrade-path scenarios, with emphasis on business value: safer deployments, faster feedback, and robust upgrade paths. Key delivered items include: SwingSet testing improvements (reap-all and reload) with commits 3eaf4cea8b44cf00c4b172581b274018917b8132; 7302873074f3487a0683be5d5dacf5c53944631c; Acceptance tests and state-sync stabilization (sync with latest blocks and removal of stale snapshots) with commits 76e79966d8da412f82b3669d758642dcc29808f8; eb623e99e9ed792332e5e78b15d8e15ecb9b0f5a; 52e851d366fee163e85ddf972e4fd96c5547d2fa; Flight recorder post-shutdown protection (prevent writes after shutdown) with commit 3d2bcb3c56ac24a0f991200b223e6af8514dc5b8; Cosmos SDK orchestration/vat upgrades and upgrade-path tests to address memory leaks and robust upgrade scenarios (d031c6f899917a35b57cadfdc4113b08cb00ea09; 8727b79cf7b9e520630b793ea963a9f375d9707a; 1be509835abede6408100cf05745a9f835b4c933); Build tooling and dependency management updates for consistent environments (232ef3b26609464924acee0fc2263aa494314c49; 04914539938a9a1e892cc0bac9d9ef5bfcc94a0b; 4f7574f9ec350170b13710123da3e19808e23833; 4ba7e12a88dcd9df67e2fe8c5678f4151bc6f18f); Remove obsolete null upgrade test to prevent drift (e27076d22d93b9c9312c1a9929a1967e4841df5d).

March 2025

13 Commits • 3 Features

Mar 1, 2025

March 2025 monthly summary for Agoric/agoric-sdk focused on stability, performance, and developer experience. Delivered explicit documentation alignment for Go version, memory-management improvements in Liveslots, and enhanced observation and GC capabilities in SwingSet, complemented by a refined test harness. These work items reduce production risk, improve test reliability, and provide clearer diagnostics across vats and swingsets.

February 2025

6 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary focusing on key accomplishments, major fixes, and business impact across two core repositories. Highlighted work includes test reliability improvements in the Agoric SDK, enhanced observability for block processing in Cosmic Swingset, and robustness fixes for async iteration in the ECMAScript spec project. The work aligns with reducing risk, improving diagnostics, and enabling faster iteration on performance and reliability improvements.

October 2024

16 Commits • 4 Features

Oct 1, 2024

October 2024 (2024-10) monthly summary for Agoric SDK: Delivered measurable improvements in observability, upgrade reliability, and deployment flexibility. Key outcomes include telemetry ingestion and monitoring enhancements with improved error handling, stdout/stderr routing, stdin support, and per-block throttling; a robust upgrade process that skips proposals with empty variants and clearly expresses dependencies to ensure critical updates apply in the correct order; script configuration capabilities for custom JSON configurations to tailor price feed updates and committee parameters; and core I/O reliability improvements for filesystem streams and stdout handling, plus formatting cleanups. These deliverables improve data quality, safer upgrades, configurable deployments, and reduced operational toil, enabling faster, more reliable product iterations.

Activity

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Quality Metrics

Correctness89.4%
Maintainability88.2%
Architecture86.0%
Performance83.4%
AI Usage23.0%

Skills & Technologies

Programming Languages

DockerfileGoJavaScriptMakefileMarkdownNodeProtoPythonShellTypeScript

Technical Skills

ABI designAPI DesignAPI DevelopmentAPI IntegrationAPI developmentAST ManipulationAgoric SDKAmino EncodingAsynchronous ProgrammingBackend DevelopmentBlockchain DevelopmentBlockchain IntegrationBlockchain integrationBuild AutomationBuild Scripting

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

Agoric/agoric-sdk

Oct 2024 Jan 2026
13 Months active

Languages Used

GoJavaScriptShellTypeScriptYAMLDockerfileMakefileNode

Technical Skills

Agoric SDKBackend DevelopmentCLI DevelopmentCode FormattingCosmos SDKError Handling

endojs/endo

Jun 2025 Oct 2025
3 Months active

Languages Used

JavaScriptTypeScript

Technical Skills

API DesignAsynchronous ProgrammingJavaScriptNode.jsRemote Procedure Calls (RPC)Type Definitions

Agoric/agoric-3-proposals

Aug 2025 Oct 2025
3 Months active

Languages Used

ShellTypeScriptYAMLJavaScriptMarkdown

Technical Skills

Backend DevelopmentCI/CDCLI DevelopmentGitHub ActionsShell ScriptingBuild Scripting

tc39/ecma262

Feb 2025 Feb 2025
1 Month active

Languages Used

JavaScript

Technical Skills

Asynchronous ProgrammingError HandlingIterator Protocols

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