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Thomas Stjernegaard Jeppesen

PROFILE

Thomas Stjernegaard Jeppesen

Thomas Jeppesen developed and maintained core features for the gbif-web repository, focusing on data-rich user interfaces and robust backend integration. Over 11 months, he delivered enhancements such as interactive phylogeny visualizations, advanced taxonomy navigation, and dynamic occurrence data loading, using technologies like React, TypeScript, and GraphQL. His work included refactoring data access patterns, improving error handling, and consolidating SEO metadata, which increased site reliability and discoverability. By integrating internationalization, secure authentication, and scalable component design, Thomas ensured the platform supported global users and complex data workflows. His contributions demonstrated technical depth and a strong focus on maintainability.

Overall Statistics

Feature vs Bugs

80%Features

Repository Contributions

106Total
Bugs
13
Commits
106
Features
51
Lines of code
66,712
Activity Months11

Work History

October 2025

5 Commits • 2 Features

Oct 1, 2025

October 2025 (gbif-web): Delivered MDT integration with new routes, GraphQL queries, and UI components; expanded MDT data sources with additional dataset keys and added a totals row in MDT installations. Implemented a robust fix for MDT installations dataset linking, including unknown installations. Refactored FAQ search to use a dedicated 'question' parameter, improving URL handling and direct linking to specific FAQ items.

September 2025

17 Commits • 9 Features

Sep 1, 2025

September 2025 (2025-09) delivered a focused set of user-facing features, reliability improvements, and privacy/compliance enhancements for gbif-web. The work strengthened data rendering, search and navigation UX, geospatial visualization, and data access, while improving SEO readiness and analytics. These changes enhance user discovery, research reproducibility, and site resilience, driving increased engagement and trust.

August 2025

13 Commits • 7 Features

Aug 1, 2025

August 2025 monthly performance summary for gbif-web focused on delivering user-centric data context, improving search reliability, and expanding data discovery capabilities. Key features and fixes delivered across the gbif-web repository include Local Context Display for Occurrences and Datasets with updated GraphQL queries and UI rendering; MDT Installation Request Form enabling formal installation requests via a GitHub issue workflow; Literature Widgets with new search capabilities and routes; Enhanced Type Specimen Display with safer data access and richer metadata; Organization Search Enrichment adding numPublishedDatasets to GraphQL queries and types for filtering; plus supporting work on FAQ/help content, ambassador/awards components, and general robustness improvements.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 focuses on enhancing Publisher Statistics in gbif/gbif-web. Delivered new facet counts for hosted datasets by publishing organization and by country, enabling stakeholders to quickly assess publisher performance and data distribution. Refined the publisher contact display to gracefully handle long email addresses and improve the granularity of data presented for publishers, improving data quality and user experience. All changes are traceable to a specific commit linked to issue 965 (commit 45ca152c648fd4d5513e3575998fcf1bd21ddef3).

June 2025

6 Commits • 4 Features

Jun 1, 2025

June 2025 GBIF web frontend delivered a focused set of business-value features and stability improvements across gbif-web, strengthening search visibility, data transparency, and global accessibility. The work centers on SEO/metadata consolidation, enriched network metrics visualization, and internationalization, while adding publisher-activity depth and maintaining a scalable front-end architecture.

May 2025

3 Commits • 1 Features

May 1, 2025

May 2025 monthly report for gbif/gbif-web focused on delivering robust Taxon page enhancements and stabilizing vernacular name display. Key work included a GraphQL data access refactor for taxon details, introduction of a SourceDataset component, conditional rendering of TypeMaterial, and a new ToNubOrNotToNub query with backbone taxon detection plus routing redirection for non-backbone taxa. Also improved taxon image attribution and loading/error handling. A critical bug fix addressed vernacular names display robustness when language data is missing, ensuring correct display and grouping across localizations. Overall impact includes more reliable taxon data presentation, improved user experience, and reduced edge-case failures, contributing to higher trust and faster discovery on the gbif.org platform.

April 2025

19 Commits • 12 Features

Apr 1, 2025

April 2025 delivered substantial business value through data coverage expansion, UI refinements, and reliability improvements across gbif-web. The month focused on integrating conservation-relevant data, enhancing taxonomy navigation, and optimizing data loading and rendering for better performance and user experience.

March 2025

12 Commits • 6 Features

Mar 1, 2025

March 2025: Delivered core taxonomy enhancements and data presentation improvements across gbif-web, strengthened data access, and refined mobile UX. Key work spans navigation for taxonomy data, a Taxon Breakdown visualization, invasive species and IUCN status on taxon detail pages, origin-aware verbatim UI, and expanded GraphQL schema for richer occurrence data. Resolved critical bugs, enabling more reliable taxon name display and correct family rank charts, and fixed import casing in TaxonBreakdown. These efforts deliver faster data retrieval, clearer taxonomic context, and improved decision-making support for dataset consumers and researchers.

February 2025

9 Commits • 2 Features

Feb 1, 2025

February 2025: Delivered feature-rich updates to gbif-web, stabilized data integration with a batch Wikidata API, and completed code cleanup for long-term maintainability. Result: richer taxon/species detail pages, faster data fetch, and a more reliable UI across GBIF web.

January 2025

15 Commits • 5 Features

Jan 1, 2025

January 2025 — Delivered key UI and data capabilities in gbif-web to improve data discovery, navigation, and media viewing, while reducing UI fragmentation and increasing maintainability. Highlights include Descriptor Groups on collections with UI, download, and previews plus GraphQL integration; Taxon Tree enhancements with a new TreeView, dynamic loading, and a higherTaxonKey rename; IIIF image viewing for occurrences via IIIF manifests; a dataset page bug fix to prevent duplicate tabs; Phylogeny label cleanup; and Species pages enhancements with taxon insights, vernacular names, and improved occurrence image display. Impact includes smoother descriptor data access, faster taxon exploration, richer media presentation, and a more coherent data model and resolver framework. Technologies demonstrated include React componentization, GraphQL integration, IIIF support, and data-model/resolver updates with robust commit-level traceability.

December 2024

6 Commits • 2 Features

Dec 1, 2024

December 2024 monthly summary for gbif-web: Implemented interactive phylogeny visualization with dataset integration, added Phylogenies tab on dataset pages, and supported NEXUS/Newick formats. Centralized source archive config and completed UI refinements. Refactored dataset pages to load first occurrence data on the client side to reduce initial payload and enable dynamic loading. Performed targeted maintenance: overflow handling in phylotree, cleanup of API-utils, and routing/config improvements. Result: faster dataset pages, richer discovery experience, and easier deployment/configuration across environments.

Activity

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Quality Metrics

Correctness87.8%
Maintainability86.6%
Architecture84.6%
Performance81.0%
AI Usage20.4%

Skills & Technologies

Programming Languages

CSSGraphQLHTMLJSONJavaScriptTypeScripttsx

Technical Skills

API DevelopmentAPI IntegrationAuthenticationBackend DevelopmentCSSChart.jsCode CleanupCode ConsistencyCode GenerationCode RefactoringComponent DesignComponent DevelopmentComponent Library IntegrationConfiguration ManagementContext API

Repositories Contributed To

1 repo

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

gbif/gbif-web

Dec 2024 Oct 2025
11 Months active

Languages Used

CSSGraphQLJavaScriptTypeScriptHTMLJSONtsx

Technical Skills

API IntegrationBackend DevelopmentCSSCode CleanupCode GenerationComponent Development

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