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Frederic Stahel

PROFILE

Frederic Stahel

Frederic Stahel developed and enhanced the swisstopo/swissgeol-boreholes-suite, focusing on robust geospatial data exchange, scalable API workflows, and improved user experience. He implemented features such as JSON and geopackage import/export, audit trail UI, and MASL depth calculations, using C#, TypeScript, and React. His approach emphasized clean code, test automation with Cypress, and maintainable backend logic in ASP.NET Core. By refactoring data models, optimizing database interactions, and strengthening permission management, Frederic improved data integrity and reliability. His work enabled seamless integration with downstream systems, streamlined bulk data operations, and delivered a more stable, user-friendly platform for geospatial data management.

Overall Statistics

Feature vs Bugs

75%Features

Repository Contributions

271Total
Bugs
36
Commits
271
Features
108
Lines of code
24,570
Activity Months5

Work History

March 2025

26 Commits • 14 Features

Mar 1, 2025

March 2025 summary for swisstopo/swissgeol-boreholes-suite focused on stabilizing test reliability, refactoring the borehole data model, and improving user workflows. Delivered measurable business value through more reliable automated tests, clearer data interfaces, and streamlined borehole-related UX.

February 2025

67 Commits • 30 Features

Feb 1, 2025

February 2025 monthly summary focusing on delivering UI, backend, and process improvements for the boreholes suite.Key business value delivered includes improved data entry UX, solidified data export security, MASL depth capabilities enabling accurate height calculations, and more stable test automation.

January 2025

72 Commits • 30 Features

Jan 1, 2025

January 2025 monthly report for swisstopo/swissgeol-boreholes-suite. Focused on delivering robust geospatial data exchange, improving import/export fidelity, and strengthening code quality and data integrity. Key outcomes enable reliable data sharing with downstream systems, improve onboarding for new data types, and reduce detection of defects in data pipelines.

December 2024

77 Commits • 26 Features

Dec 1, 2024

December 2024: Focused on increasing reliability, performance, and maintainability of the boreholes suite and related upload/import workflows. Delivered robust API endpoints, improved borehole export pipeline, stabilized test coverage, and implemented scalable refactoring patterns to reduce complexity and pave the way for future enhancements. Resulting business value includes higher API correctness, faster data exports, fewer regressions, and cleaner, more maintainable code.

November 2024

29 Commits • 8 Features

Nov 1, 2024

November 2024 saw focused delivery across audit trail improvements, JSON export/import, API pagination, and code quality. Key user-facing improvements include audit trail UI enhancements showing changedAt/changedBy with borehole-name provenance, and a robust JSON export/import workflow with internationalization and tests. API scalability was enhanced with a borehole get-all endpoint with pagination; extensive UI/Cypress test cleanup and changelog maintenance reduced technical debt. Together, these efforts improve data traceability, bulk data operations, and maintainability, delivering measurable business value through faster data workflows and stronger data provenance.

Activity

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Quality Metrics

Correctness92.8%
Maintainability94.2%
Architecture88.4%
Performance89.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

C#CSSHTMLJSONJSXJavaScriptMarkdownPythonReactSQL

Technical Skills

API DesignAPI DevelopmentAPI IntegrationAPI SecurityAPI TestingASP.NET CoreAsynchronous ProgrammingAuthenticationAuthorizationAutomated Depth Calculation ValidationBackend DevelopmentC#CSS-in-JSClean CodeCode Cleanup

Repositories Contributed To

1 repo

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

swisstopo/swissgeol-boreholes-suite

Nov 2024 Mar 2025
5 Months active

Languages Used

C#HTMLJSONJavaScriptTypeScriptCSSJSXMarkdown

Technical Skills

API DevelopmentAPI IntegrationAPI TestingASP.NET CoreBackend DevelopmentC#

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