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Biel Stela

PROFILE

Biel Stela

Over 11 months, Biel Stela engineered robust backend and data solutions for the Vizzuality/amazonia-360 repository, focusing on scalable API development, data integrity, and deployment automation. Biel delivered features such as polygon-filtered metadata retrieval, OpenAI-powered content generation endpoints, and hot-swappable metadata workflows, leveraging Python, FastAPI, and AWS S3. He improved CI/CD pipelines using GitHub Actions and Terraform, enhanced observability through structured logging, and strengthened security by patching dependencies and pruning unused packages. Biel’s work demonstrated depth in backend architecture, data engineering, and DevOps, resulting in a maintainable, secure, and performant platform supporting region-based data analysis and automated deployments.

Overall Statistics

Feature vs Bugs

71%Features

Repository Contributions

40Total
Bugs
8
Commits
40
Features
20
Lines of code
8,622
Activity Months11

Work History

February 2026

1 Commits

Feb 1, 2026

February 2026 monthly summary for Vizzuality/amazonia-360: Focused on security hardening of dependencies and simplification of the codebase. Implemented a targeted vulnerability remediation in the vuln/api stack by updating to patched dependencies and pruning unused packages, reducing attack surface and easing future maintenance. Result: more secure, leaner, and maintainable project ready for deployment.

January 2026

1 Commits • 1 Features

Jan 1, 2026

January 2026 (Vizzuality/amazonia-360): Delivered improved observability for database initialization by routing init error messages to stdout, enabling faster debugging and more reliable startup. This change reduces troubleshooting time for DB connectivity issues and supports faster deployments, contributing to overall system reliability and faster issue resolution.

November 2025

3 Commits • 1 Features

Nov 1, 2025

Concise monthly summary for 2025-11 focused on delivering business value and strengthening CI/CD reliability for Vizzuality/amazonia-360.

October 2025

2 Commits • 1 Features

Oct 1, 2025

Concise monthly summary for 2025-10 focusing on features and bug fixes in Vizzuality/amazonia-360. This period delivered a hot-swappable metadata workflow and improved observability, directly contributing to faster iteration, reduced downtime for metadata updates, and stronger debugging capabilities.

September 2025

21 Commits • 9 Features

Sep 1, 2025

September 2025 performance-focused month for Vizzuality/amazonia-360. Focused on stabilizing tiling workflows, expanding grid capabilities, and tightening deployment/testing processes. Delivered concrete improvements to H3 grid generation, tiling APIs, and data synchronization, while addressing regression and cleanup tasks to reduce operational risk. Result: more accurate country coverage, faster tile rendering, a cleaner API surface, and streamlined deployment and testing workflows.

August 2025

2 Commits • 2 Features

Aug 1, 2025

August 2025 milestone for Vizzuality/amazonia-360: Delivered two core features with measurable impact on performance, security, and data integrity. 1) API Dependency Upgrades and Zonal Stats Reader Params Fix: Upgraded core Python dependencies (polars, pydantic, ruff) and applied minor updates to others. Fixed zonal_stats.py to pass reader_params as a dictionary, improving performance, security, and compatibility. 2) H3 Grid Dataset Update Script: Added a Python script to merge new data from CSVs into H3 grid datasets, enhanced grid metadata with new columns, and added pre-processing validation to ensure directory structure integrity before processing.

April 2025

3 Commits • 2 Features

Apr 1, 2025

April 2025 performance summary focusing on delivering foundational capabilities, improving documentation quality, and laying the groundwork for scalable computations. Across two repositories, the work enhances developer onboarding, code quality, and future feature velocity, enabling faster, more reliable delivery of business-critical features.

March 2025

1 Commits • 1 Features

Mar 1, 2025

Month: 2025-03. Focused on documentation improvements and API reference enhancements for the Vizzuality/amazonia-360 project. No major bugs fixed during this period. The work drives developer onboarding, API usability, and maintainability.

February 2025

2 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for Vizzuality/amazonia-360 focusing on delivering an OpenAI-powered content generation endpoint, strengthening deployment reliability, and aligning build pipelines with security best practices. The work demonstrates strong cross-functional collaboration across backend, DevOps, and CI/CD, delivering business value through automation, secure secret handling, and scalable content generation.

December 2024

3 Commits • 1 Features

Dec 1, 2024

December 2024: Implemented polygon-filtered metadata retrieval for the /meta endpoint in Vizzuality/amazonia-360, enabling dynamic min/max calculations based on polygon filters and area-specific metadata via GeoJSON features. Aligned API root path to /api/ and updated routing, data loading, and metadata processing to support region-based queries. Added a minor documentation polish (README trailing space removal) with no user-facing impact. Overall, this work improves data discovery accuracy, API consistency, and maintainability for region-focused analysis.

November 2024

1 Commits • 1 Features

Nov 1, 2024

November 2024 monthly summary for Vizzuality/amazonia-360 focusing on API robustness, data correctness, and measurable business value. Delivered a structural API enhancement for TableResults with a dedicated 'cells' field for H3 indices, fixed a grid table result type issue, and updated tests to reflect the new API response structure. These changes improve downstream data consumption, reliability, and developer velocity.

Activity

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Quality Metrics

Correctness88.2%
Maintainability87.4%
Architecture86.2%
Performance82.4%
AI Usage22.0%

Skills & Technologies

Programming Languages

BashDockerfileHCLJavaScriptMarkdownPythonSQLShellTerraformTypeScript

Technical Skills

API DevelopmentAPI developmentAWSAWS Elastic BeanstalkAWS S3AsyncioBackend DevelopmentCI/CDCloud DeploymentCode RefactoringConfigurationCron JobsData AnalysisData EngineeringData Handling

Repositories Contributed To

2 repos

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

Vizzuality/amazonia-360

Nov 2024 Feb 2026
11 Months active

Languages Used

PythonDockerfileMarkdownSQLShellYAMLTypeScriptBash

Technical Skills

API DevelopmentBackend DevelopmentData ModelingFastAPIPydanticSQLAlchemy

Vizzuality/tnc-blue-carbon-cost-tool

Apr 2025 Apr 2025
1 Month active

Languages Used

Python

Technical Skills

FastAPIProject SetupPython DevelopmentTesting