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Tom Willemsen

PROFILE

Tom Willemsen

Tom Willemsen contributed to the ISISComputingGroup/IBEX ecosystem by developing features and resolving issues across device integration, CI/CD, and documentation. He implemented IP mode support for the Knauer Valve Unifier VU4.1, enabling flexible device communication, and enhanced release management by authoring detailed release notes for multiple IBEX versions. Tom improved CI reliability and deployment workflows in repositories like ibex_utils and ibex_gui, using Python, Jenkins, and Bash to streamline automation and error reporting. His work on documentation in ibex_developers_manual clarified onboarding and troubleshooting, demonstrating depth in technical writing, configuration management, and cross-platform compatibility, resulting in more robust, maintainable systems.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

218Total
Bugs
18
Commits
218
Features
64
Lines of code
3,402
Activity Months15

Work History

January 2026

3 Commits • 2 Features

Jan 1, 2026

January 2026 IBEX monthly performance: Key features delivered, major fixes, impact, and skills demonstrated. Key value: expanded device interoperability and improved release documentation. Major bugs fixed: none reported this month.

November 2025

3 Commits • 2 Features

Nov 1, 2025

November 2025 monthly summary focusing on delivering reliability improvements, template governance, and reproducibility enhancements across core IBEX repositories. Delivered targeted fixes and features that reduce operational risk, streamline science workflows, and prepare for upcoming roadmap milestones.

October 2025

8 Commits • 3 Features

Oct 1, 2025

October 2025 highlights across three repositories: IBEX, ibex_developers_manual, ibex_utils. Key features delivered and major fixes include robust CI error reporting, refreshed release/docs workflow, and improved dashboard UX. Deliverables across the month: - IBEX: CI Project Board Checks - Error Handling Improvements to detect errors via error_num == 0 and any details prefixed with 'ERROR' for more robust reporting (commits e24e060f7f30247d8f9d38f6c226e4618084a722; e4fc1e9d2f3cbc0af490e19bfb09415cf509858a). - IBEX: Documentation: Release notes and issue template corrections to reflect a ticket severity change and fix an issue template typo for consistent issue tracking (commits f82d38836bd921c13145aed0e833321d651ba413; 7395f264fb2ccfe126920058d47adb7cfe0b0719). - ibex_developers_manual: Documentation Improvements consolidating hardware lifecycle, governance schedules, and resource links (commit 6d6dc67ad9a95551c5a03a83245586e034fc766c; d3dcf47b7ea9156c5da03592a8583119fb66a967; c6bdcd6a56816b3f6bbd0755fdca4217d03f7d81). - ibex_utils: Web Dashboard URL Migration with Instrument Parameterization updating server tasks to route to a new GitHub Pages URL and pass the instrument name as a query parameter (commit 7b46796a2da041547b8338b18e9c95b2d3b2e459). Overall impact and accomplishments: - Improved release reliability and triage speed through robust CI error reporting and clarified documentation, reducing support time and release risk. - Strengthened governance and resource accuracy with consolidated hardware lifecycle guidance and updated meeting roles. - Enhanced dashboard accessibility and consistency by migrating the web dashboard URL with instrument parameterization for a better user experience. Technologies/skills demonstrated: - CI/QA debugging and robust error reporting patterns - Documentation governance and release-note discipline - URL routing and parameterization in configuration management - Cross-repo coordination and change management for consistent tooling across IBEX ecosystem.

September 2025

4 Commits • 2 Features

Sep 1, 2025

September 2025 performance highlights focused on CI reliability and release documentation. Key work centered on standardizing Jenkins pipeline agent labeling for the GUI build to ensure consistent execution on the fixed 'gui' label, and updating release notes for IBEX v26.2.0 to improve transparency for teams and customers. These changes reduce CI instabilities, improve deployment consistency, and enhance release communications. Demonstrated skills include CI/CD, Git, Jenkins pipelines, and cross-repo collaboration with clear traceability and documentation.

August 2025

5 Commits • 2 Features

Aug 1, 2025

August 2025 focused on strengthening developer-facing documentation and release documentation across two repositories. Delivered clear guidance for motor controller parameters (MOT_ENC_SYNC_TOL), corrected jaw configuration references, and standardized retrospective notes formatting. Updated v25.8.0 release notes to reflect upcoming changes and improve release readiness. These efforts enhance onboarding, reduce configuration ambiguity, and streamline release communication.

July 2025

19 Commits • 5 Features

Jul 1, 2025

July 2025 performance summary across ISISComputingGroup repositories. Key features delivered and business value include consolidated developer documentation, new runtime configurability, and cross-platform tooling improvements, supported by CI/CD optimizations and stability enhancements. The work reduced support overhead, improved deployment reliability, and accelerated troubleshooting for developers and operators. Key outcomes by repository: - ibex_developers_manual: Documentation enhancements consolidating Troubleshooting, IOC Remote Access, and Dell Asset Lookup to improve clarity and reduce guidance gaps. - IBEX: Introduced autosave frequency adjustment (change_autosave) with linked release notes to Bluesky, enabling runtime tuning and better data integrity during experiments. - ibex_utils: CI/CD pipeline robustness gains through Jenkins-related updates, plus UV tool installation improvements and Windows compatibility enhancements for instrument installers, improving reliability of builds and tool deployments. - bluesky/ophyd-async: Windows CI stability improvements by switching to time.monotonic() and adopting absolute timeouts to reduce flaky tests and improve reliability of the Windows test suite. - ibex_gui: CI pipeline simplification by removing Checkstyle and Doxygen stages, reducing build time and complexity while preserving essential validation. Overall impact: The month delivered tangible improvements in developer experience, build reliability, and cross-platform tooling, enabling faster troubleshooting, more reliable releases, and smoother onboarding for new contributors. Technologies/skills demonstrated: SSH-based remote access guidance, PowerShell for Dell asset lookups, Robocopy and UNC path handling for local tooling, Windows batch/script work, Jenkins pipeline management, release-note alignment, time.monotonic() usage for reliable timing in CI, and general cross-repo collaboration and documentation discipline.

June 2025

11 Commits • 2 Features

Jun 1, 2025

June 2025 monthly summary focusing on key accomplishments across four repositories. This period delivered a critical data-integrity bug fix in HDF writer, extensive documentation improvements to improve user onboarding and guidance, a release-stability related configuration change to submodule updates, and a documentation-based URL relocation update for user manuals. The work delivered business value by reducing release risk, improving data quality, and enabling easier user adoption.

May 2025

8 Commits • 2 Features

May 1, 2025

May 2025 performance summary: Delivered targeted documentation and workflow improvements across three ISISComputingGroup repositories, strengthening user guidance, onboarding, and contributor governance. Key deliveries include: 1) ISISComputingGroup/ibex_developers_manual — consolidated documentation updates spanning Triton context, corrected nGEM setup instructions to specify NDX PV controls, retrospective notes dating, and clarified Kafka datastreaming behavior (4 commits). 2) ISISComputingGroup/EPICS-ioc — updated PR template and related wiki/documentation links to the new domain, ensuring contributors access current resources (2 commits). 3) ISISComputingGroup/IBEX — updated issue templates to reflect current Git workflow guidance, improving contributor onboarding and consistency (2 commits). Overall impact: enhanced documentation accuracy and guidance across repos, reduced onboarding time and support inquiries, and alignment with updated documentation domains and Git workflows. Technologies/skills demonstrated: technical writing, cross-repo collaboration, PV-based configuration awareness, Kafka/datastreaming considerations, and Git workflow governance.

April 2025

38 Commits • 7 Features

Apr 1, 2025

April 2025 delivered meaningful business value through performance improvements, release readiness, and architectural cleanup across IBEX and its developer documentation. The ISISDAE component saw a notable begin/end speed improvement, release notes and dependency upgrades were prepared for 25.8.0, and Bluesky scanning plus 2T 3D Vector magnet support expanded capabilities. Architectural cleanups removed deprecated SECI/Galil integrations, deployment automation, and disaster recovery components, reducing maintenance burden and risk, while documentation improvements enhanced guidance and consistency across the project.

March 2025

16 Commits • 5 Features

Mar 1, 2025

Month: 2025-03 (ISISComputingGroup repositories) — concise, business-focused monthly summary of delivered features, fixed bugs, and overall impact. Highlights show performance improvements, safety enhancements, reliability gains, and stronger developer workflows. The summary below maps each delivered item to business value and technical achievement. Key features delivered and major improvements: - INTER Instrument Safe Stop on Safety Trip (IBEX): Patch to gracefully stop Galil motors when the safety system trips, improving safety and safe operation; aligns with safety tickets (Ticket 8675). - Sprint Retrospective Documentation and Notes (ibex_developers_manual): Creation and ongoing updates of Retrospective-Notes-2025.03.05 to increase sprint transparency and record-keeping. - Documentation and Process Improvements for Dependencies, Config Checks, and Developer Workflows (ibex_developers_manual): Consolidated and updated docs to improve accuracy and operational efficiency in dependency updates, config checks, Python packaging, and workflow processes. Major bugs fixed and reliability improvements: - DG645 OPI Graph Update Rate Limiting (IBEX): Limit OPI graph update rate to 1Hz to reduce CPU usage; documented under issue #8692. - Robust No-Op Move Handling for SimMotor (ophyd-async): Ensure no-op moves to current position are handled safely with tests verifying correct behavior (#834). - Configurable Read Timeout for EPICS Signals (ophyd-async): Added timeout parameter to signal creation/initialization to prevent indefinite waits and enhance reliability (#831). - Dependency Decoupling for Ophyd Async (p4p removal): Remove hard dependency on p4p to improve CI/importability and reduce fragile dependencies (#833). Overall impact and accomplishments: - Improved system performance and responsiveness by reducing graph update churn on OPI dashboards. - Strengthened safety posture for instrument operations through automated safe-stop behavior on safety trips. - Enhanced transparency, documentation quality, and onboarding through structured retrospective notes and consolidated developer docs. - Increased reliability and robustness of simulation and EPICS-based workflows, reducing runtime stalls and dependency fragility. Technologies and skills demonstrated: - Python development, patching, and testable changes across multiple repos. - EPICS/OPI and hardware-in-the-loop concepts (INTER safe stop, SimMotor behavior). - Documentation discipline: markdown-based retrospectives and developer workflows. - Git-based collaboration, ticket/issue linking, and CI-aware changes.

February 2025

14 Commits • 5 Features

Feb 1, 2025

February 2025: Stability-focused IOC configuration refinements, expanded developer documentation, and clarified release notes across EPICS-ioc, ibex_developers_manual, and IBEX. The work emphasizes business value through more predictable system behavior, improved troubleshooting workflows, and clearer release communication, enabling faster issue resolution and smoother operations.

January 2025

32 Commits • 4 Features

Jan 1, 2025

January 2025: consolidated documentation, release readiness, and calendar-versioning adoption across two repositories. Delivered extensive Cryogenic SMS PSU and HIFI Zero Field Controller documentation, streamlined the release process and packaging documentation (including PyPI publishing steps and tag workflow), expanded Experimental Database docs, and completed IBEX 25.2.x release notes with calendar-versioning adoption. No critical bugs fixed this period; the focus was on documentation quality, process improvements, and release readiness, driving lower onboarding time, clearer guidance for users, and faster, more reliable software releases.

December 2024

2 Commits

Dec 1, 2024

December 2024 performance summary: focused on reliability and safety by addressing configuration correctness and motor control signaling across two repositories. Achieved stability improvements through targeted metadata/config updates and EPICS-aligned motor stop behavior, complemented by strengthened test coverage. These changes reduce deployment risk, improve operational reliability, and demonstrate cross-repo collaboration and adherence to EPICS conventions.

November 2024

50 Commits • 21 Features

Nov 1, 2024

November 2024 performance highlights focused on cross-platform reliability, packaging quality, and documentation across the Bluesky/IBEX ecosystem. The month delivered Windows CI enablement for bluesky/ophyd-async, a suite of IBEX developer-module updates with thorough documentation and packaging improvements, a refactor of alerting in Genie, and backend-system/stability enhancements, complemented by targeted log-noise reductions and release-note improvements.

October 2024

5 Commits • 2 Features

Oct 1, 2024

October 2024: Delivered consolidated environment setup and dependency documentation across ibex_developers_manual and updated IBEX release notes to reflect current dependency versions. Focused on clarity for onboarding, compatibility with recent OpenJDK versions, and accurate dependency status. No major bugs fixed this month; maintenance and documentation improvements reduced deployment risks and improved reproducibility.

Activity

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Quality Metrics

Correctness96.2%
Maintainability97.0%
Architecture94.8%
Performance94.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

BashBatchGitGroovyJSONMarkdownPowerShellPythonXMLYAML

Technical Skills

API IntegrationAPI InteractionAsynchronous ProgrammingCI/CDConfiguration ManagementData AcquisitionDependency ManagementDevOpsDevice ControlDocumentationDocumentation ManagementEPICSEnvironment VariablesGitHDF5

Repositories Contributed To

7 repos

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

ISISComputingGroup/ibex_developers_manual

Oct 2024 Oct 2025
11 Months active

Languages Used

MarkdownmarkdownGitPythonPowerShell

Technical Skills

DocumentationPython DevelopmentRefactoringRelease ManagementdocumentationDevOps

ISISComputingGroup/IBEX

Oct 2024 Jan 2026
14 Months active

Languages Used

MarkdownPythonBashJSON

Technical Skills

DocumentationRelease ManagementDependency ManagementAPI IntegrationAPI InteractionCI/CD

ISISComputingGroup/ibex_utils

Jun 2025 Nov 2025
4 Months active

Languages Used

GroovyBatchPython

Technical Skills

CI/CDJenkinsDevOpsEnvironment VariablesScriptingWindows Administration

bluesky/ophyd-async

Nov 2024 Jul 2025
5 Months active

Languages Used

PythonYAML

Technical Skills

Asynchronous ProgrammingCI/CDTestingWindows CompatibilityDevice ControlEPICS

ISISComputingGroup/EPICS-ioc

Dec 2024 May 2025
3 Months active

Languages Used

XMLMarkdown

Technical Skills

Configuration ManagementDocumentationDocumentation Management

ISISComputingGroup/ibex_gui

Jul 2025 Sep 2025
2 Months active

Languages Used

Groovy

Technical Skills

CI/CDJenkinsDevOps

ISISComputingGroup/genie

Nov 2024 Nov 2024
1 Month active

Languages Used

Python

Technical Skills

API IntegrationPythonRefactoringUnit Testing

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