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Andy Fiddaman

PROFILE

Andy Fiddaman

Andy contributed to the oxidecomputer/omicron and oxidecomputer/hubris repositories, focusing on reliability and system integrity in distributed environments. Over four months, Andy addressed network interface race conditions and improved SMF service startup safety, using Rust, Shell scripting, and system programming skills to prevent misconfigurations and data conflicts. He enhanced build tooling and firmware compatibility, ensuring seamless upgrades and stable runtime behavior. Andy also delivered a time synchronization reliability feature, refining NTP configurations to maintain accurate timestamps during network outages. His work demonstrated a strong grasp of embedded systems, network configuration, and package management, consistently reducing operational risks and improving deployment resilience.

Overall Statistics

Feature vs Bugs

20%Features

Repository Contributions

5Total
Bugs
4
Commits
5
Features
1
Lines of code
138
Activity Months4

Work History

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025: Delivered Time Synchronization Reliability Enhancement for oxidecomputer/omicron to improve time accuracy and resilience during network outages. The change revises NTP server configurations to avoid multiple authoritative sources and enables faster reselection of valid time sources, ensuring consistent time across the rack when boundary servers lose connectivity. This supports more reliable distributed operations and accurate logging/timestamps.

January 2025

2 Commits

Jan 1, 2025

Concise monthly summary for 2025-01 highlighting delivered features and bug fixes across oxidecomputer/omicron and oxidecomputer/hubris. Focus on business value, reliability, and technical achievements.

December 2024

1 Commits

Dec 1, 2024

December 2024: Implemented critical startup safety for SMF services in oxidecomputer/omicron. The fix prevents starting services in /root and avoids defaulting to the root user's home directory when run as root, eliminating data storage conflicts when /root is a separate ZFS dataset. This improves reliability and security in production environments; traceable via commit 85feb0952e1fde1ef322d970e3f41145f9a0caf4.

November 2024

1 Commits

Nov 1, 2024

November 2024 focused on reliability enhancements in oxidecomputer/omicron by addressing a critical network interface startup race condition. Implemented a startup sequencing fix that delays zone-network-service until in.ndpd is online, preventing misconfigurations when multiple services start in parallel. The change reduces risk of broken network configurations during zone startup and strengthens overall system stability for deployments under concurrent service orchestration.

Activity

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Quality Metrics

Correctness82.0%
Maintainability80.0%
Architecture82.0%
Performance68.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

RustShellTOML

Technical Skills

Build SystemsEmbedded SystemsFirmware DevelopmentHardware AbstractionNetwork ConfigurationNetworkingPackage ManagementRust ProgrammingShell ScriptingSystem AdministrationSystem ProgrammingTime Synchronization

Repositories Contributed To

2 repos

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

oxidecomputer/omicron

Nov 2024 Apr 2025
4 Months active

Languages Used

RustShell

Technical Skills

NetworkingSystem ProgrammingShell ScriptingSystem AdministrationBuild SystemsPackage Management

oxidecomputer/hubris

Jan 2025 Jan 2025
1 Month active

Languages Used

RustTOML

Technical Skills

Embedded SystemsFirmware DevelopmentHardware Abstraction

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