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Exceeds
Jeroen ter Heerdt

PROFILE

Jeroen Ter Heerdt

Over six months, contributed to MicrosoftDocs repositories by delivering twelve documentation features and resolving seven bugs, focusing on DAX, Power BI, and Unicode handling. Enhanced onboarding and reduced support friction by restructuring DAX user-defined function guides, clarifying time intelligence features, and improving object-level security documentation. Applied technical writing, DAX, and Markdown skills to correct inaccuracies, consolidate content, and ensure link integrity. Managed metadata, table-of-contents updates, and asset cleanups to improve discoverability and maintainability. Iterative Git-based workflows and cross-repository collaboration ensured documentation aligned with evolving product capabilities, enabling faster adoption and more accurate implementation for developers and analysts using Power BI.

Overall Statistics

Feature vs Bugs

63%Features

Repository Contributions

67Total
Bugs
7
Commits
67
Features
12
Lines of code
1,903
Activity Months6

Work History

January 2026

6 Commits • 1 Features

Jan 1, 2026

2026-01 monthly summary for MicrosoftDocs/query-docs: Key feature delivered is a comprehensive documentation enhancement for UnicodeCharacterBehavior with GB18030-2022 encoding support in Power BI. No major bugs fixed this month; the focus was on documentation quality, clarity, and discoverability. Impact includes clearer guidance for applying Unicode handling in reports, improved onboarding and reduced support overhead, and alignment with encoding standards. Demonstrated skills include technical writing, Git-based review workflows, metadata tagging, and table-of-contents management. Business value: faster implementation of Unicode handling, improved accuracy for multilingual reports, and better user adoption of GB18030-2022 in Power BI across contributors and users.

December 2025

4 Commits • 1 Features

Dec 1, 2025

December 2025: MicrosoftDocs/query-docs – Delivered documentation-focused improvements for DAX UDF and Object-Level Security (OLS). The updates clarify that UDFs do not automatically secure measures protected by OLS and provide best practices for implementing correct security, addressing a common user gap. Also resolved documentation quality issues by fixing two broken links and correcting a typo in OLS-related DAX UDF docs. These changes enhance guidance accuracy, reduce user confusion, and strengthen the security posture conveyed by the docs. Key commits: 94bf414de84dddcd6a30491c785a0faaaab3c5b3; 2f34869b76fecdc4e126915251491c1e93f5dd07; 530e86d9b503f0f1b9305f7aa8045853a1030e62; 79368e91432d1947a86295e61e9f5105794668bb.

October 2025

5 Commits • 2 Features

Oct 1, 2025

October 2025 focused on documentation quality improvements across two MicrosoftDocs repositories (powerbi-docs and query-docs), delivering precise corrections and capability clarifications that directly improve customer understanding, onboarding, and support efficiency. The updates align documentation with current product capabilities and reduce ambiguity for users integrating Power BI with embedded scenarios and time intelligence features.

September 2025

20 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary: Delivered comprehensive documentation improvements across two Microsoft Docs repositories, focusing on DAX UDF best practices and Power BI time intelligence. Key outcomes include a structured overhaul of DAX docs with a new DAX User-Defined Functions Best Practices guide, extensive link and asset cleanups, author metadata stabilization, and targeted updates to time intelligence content with IntelliSense notes and usage guidance. These changes improved accuracy, navigability, and onboarding for developers and analysts, reducing potential support friction and enabling faster model design and implementation. Demonstrated skills in documentation architecture, content governance, asset management, and domain knowledge of DAX and Power BI time intelligence.

August 2025

30 Commits • 6 Features

Aug 1, 2025

Concise monthly summary for 2025-08 focusing on business value and technical achievements across three documentation repositories. Highlights include feature deliveries, stability improvements, and cross-repo collaboration that improved documentation reliability and onboarding efficiency.

June 2025

2 Commits

Jun 1, 2025

June 2025 Summary: Focused on documentation quality for the ABS function in DAX in the MicrosoftDocs/query-docs repository. Key deliverable: documentation updates to abs-function-dax.md to ensure the ABS function is accurately described, with no code changes. These changes correct documentation inaccuracies, clarify expected behavior for developers, and reduce potential confusion. The work is traceable to two commits (f2642fc87b03150a5c62db004b74c5afbd343ded and 079b3f68685c72d433d45842b9d88e296a584ff1). Overall impact: improved developer experience, better onboarding for DAX users, and strengthened maintainability of the docs. Technologies/skills demonstrated: markdown documentation, Git version control, change traceability, and adherence to documentation standards.

Activity

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Quality Metrics

Correctness99.2%
Maintainability99.4%
Architecture98.8%
Performance98.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

DAXMarkdownYAML

Technical Skills

Code FormattingDAXDocumentationLink ManagementPower BITechnical Writingcontent managementdata analysisdocumentationtechnical writing

Repositories Contributed To

3 repos

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

MicrosoftDocs/query-docs

Jun 2025 Jan 2026
6 Months active

Languages Used

MarkdownYAMLDAX

Technical Skills

DocumentationDAXLink ManagementTechnical WritingCode Formattingdocumentation

MicrosoftDocs/powerbi-docs

Aug 2025 Oct 2025
3 Months active

Languages Used

Markdown

Technical Skills

DocumentationTechnical Writing

MicrosoftDocs/bi-shared-docs

Aug 2025 Aug 2025
1 Month active

Languages Used

Markdown

Technical Skills

Documentation