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Jaap Pieroen

PROFILE

Jaap Pieroen

Over four months, Pieroen enhanced Home Assistant’s dynamic pricing and branding integrations, focusing on the Essent component across the mib1185/homeassistant-core and home-assistant/brands repositories. He implemented real-time electricity and gas pricing, optimized the price sensor’s update interval from twelve to one hour, and upgraded the integration to version 0.3.1 for improved reliability. Pieroen also unified branding assets and improved UI iconography, leveraging Python, API integration, and backend development skills. His work included thorough documentation updates and dependency management, ensuring clarity and maintainability. The engineering demonstrated end-to-end ownership, balancing new feature delivery with ongoing performance and documentation improvements.

Overall Statistics

Feature vs Bugs

88%Features

Repository Contributions

13Total
Bugs
1
Commits
13
Features
7
Lines of code
4,229
Activity Months4

Work History

February 2026

2 Commits • 1 Features

Feb 1, 2026

February 2026: Delivered upgrade of Essent Dynamic Pricing integration to version 0.3.1 in the Home Assistant core repository (mib1185/homeassistant-core). This release enables new features and stability improvements in dynamic pricing, with two commits bumping the dependency and aligning with release 0.3.1 (#160958). No major bugs fixed this month; the upgrade focuses on compatibility, reliability, and performance of the pricing integration. The work demonstrates end-to-end ownership from dependency management to integration readiness, with collaboration via co-authored commits.

January 2026

2 Commits • 1 Features

Jan 1, 2026

January 2026 — mib1185/homeassistant-core: Implemented Essent price sensor update interval reduction from 12 hours to 1 hour, significantly improving data freshness and responsiveness for price-based automations and dashboards. Two commits were applied to enforce this change (#160959). Overall impact: faster, more reliable price signals with minimal risk and no notable bugs.

December 2025

1 Commits

Dec 1, 2025

December 2025 focused on documentation hygiene for home-assistant.io. Removed references to an unavailable Essent API endpoint to align docs with current API availability and reduce user confusion; no new features released this month; major bug fix improves reliability and reduces potential support overhead.

November 2025

8 Commits • 5 Features

Nov 1, 2025

November 2025: Delivered branding updates and real-time pricing capabilities across key Home Assistant repos, with documentation improvements to boost clarity for customers. Key outcomes include UI icon enhancements for the Marstek BLE integration, Essent brand assets for branding consistency, real-time Essent pricing integration, removal of the average gas price sensor to streamline offerings, and updated Essent documentation including Dynamic Contracts clarification and an updated data refresh cadence.

Activity

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Quality Metrics

Correctness100.0%
Maintainability98.6%
Architecture98.6%
Performance98.6%
AI Usage21.4%

Skills & Technologies

Programming Languages

JSONMarkdownNonePythonSVGmarkdown

Technical Skills

API integrationDependency ManagementGraphic DesignIntegration DevelopmentPythonUI Designautomationbackend developmentbrandingdata handlingdata processingdocumentationgraphic designhome automationtechnical writing

Repositories Contributed To

3 repos

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

mib1185/homeassistant-core

Nov 2025 Feb 2026
3 Months active

Languages Used

PythonJSON

Technical Skills

API integrationPythonbackend developmentdata handlingdata processingunit testing

home-assistant/home-assistant.io

Nov 2025 Dec 2025
2 Months active

Languages Used

Markdownmarkdown

Technical Skills

API integrationdocumentationhome automationtechnical writing

home-assistant/brands

Nov 2025 Nov 2025
1 Month active

Languages Used

NoneSVG

Technical Skills

Graphic DesignUI Designbrandinggraphic design