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stefan-langenmaier

PROFILE

Stefan-langenmaier

Stefan Langenmaier migrated Viessmann API endpoints from v1 to v2 for equipment installations in the evcc-io/evcc repository, enabling integration with the latest Viessmann API features and supporting future hardware. He approached the task by updating YAML configurations and applying RESTful integration patterns, ensuring the codebase reflected new endpoint structures and versioning requirements. This work reduced integration risk and streamlined onboarding for new equipment, improving reliability for Viessmann installations. Stefan demonstrated skills in API integration, YAML configuration, and Go-based service updates. The migration laid a foundation for broader hardware support, though no major bugs were reported or fixed during this period.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

1Total
Bugs
0
Commits
1
Features
1
Lines of code
4
Activity Months1

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for evcc-io/evcc: Delivered Viessmann API Endpoints Migration from v1 to v2 for Equipment Installations, enabling integration with the latest Viessmann API features and laying the groundwork for broader hardware support. Commit 05eb10aae7d522bac94b7fa7a35f7d0231f45b14 ("Viessman: update API endpoints (#27503)") captured the endpoint updates. Major bugs fixed: None reported this month. Overall impact: This migration reduces integration risk for Viessmann installations, accelerates onboarding of new equipment, and improves reliability of installations. Technologies/skills demonstrated: API versioning and endpoint migration, RESTful integration patterns, versioned API design, Go-based service updates, and commit-driven development.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

YAML

Technical Skills

API IntegrationYAML Configuration

Repositories Contributed To

1 repo

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

evcc-io/evcc

Feb 2026 Feb 2026
1 Month active

Languages Used

YAML

Technical Skills

API IntegrationYAML Configuration