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Herian

PROFILE

Herian

Herian Cavalcante engineered and maintained robust data pipelines and analytics models for the prefeitura-rio/queries-rj-sms and prefeitura-rio/pipelines_rj_sms repositories, focusing on healthcare data integration, quality, and governance. He developed end-to-end ETL workflows using Python, SQL, and Prefect, implementing features such as historical data ingestion, schema evolution, and resource optimization. Herian enhanced data reliability by introducing deduplication, data freshness monitoring, and error handling, while also integrating new data sources via APIs and Google Sheets. His work improved downstream analytics, reduced operational costs, and ensured regulatory compliance, demonstrating strong technical depth in data modeling, orchestration, and cloud data warehousing.

Overall Statistics

Feature vs Bugs

63%Features

Repository Contributions

157Total
Bugs
29
Commits
157
Features
49
Lines of code
12,316
Activity Months6

Work History

October 2025

5 Commits • 2 Features

Oct 1, 2025

Month: 2025-10 — Performance review-ready monthly summary for Prefeitura Rio data pipelines. Delivered targeted features and critical fixes across two repositories, enhancing reliability, data quality, and cost efficiency. The main outcomes include deprecation cleanup, resource optimization for vitai pipelines, CID aggregation enhancements, and SQL UNION ALL data alignment fixes. These changes improve downstream analytics accuracy, reduce infra overhead, and demonstrate solid data engineering and software maintenance practices across cross-team pipelines.

September 2025

17 Commits • 7 Features

Sep 1, 2025

September 2025 monthly summary focusing on data engineering achievements across prefeitura-rio/pipelines_rj_sms and prefeitura-rio/queries-rj-sms. Delivered key features, major data-model improvements, and governance enhancements that improve traceability, ingestion flexibility, and query performance. Highlights include: (1) XML data extraction enhancement for diario_oficial_uniao_api, enabling id and act_id traceability; (2) Google Sheets ingestion for dentistry data for projeto_odontologia (Historico, historico_ap, sigtap_odo); (3) extensive BCadastro CNPJ/CPF data model optimization (partitioning, clustering, daily tag, alias corrections, and column-selection refinements) across multiple commits; (4) addition of unique identifiers for daily official publications (id, id_oficio) to strengthen data lineage; these changes collectively improve data reliability, downstream analytics, and governance.

August 2025

43 Commits • 16 Features

Aug 1, 2025

August 2025 — Consolidated data engineering efforts across prefeitura-rio/pipelines_rj_sms and prefeitura-rio/queries-rj-sms. Delivered end-to-end SISCAN data ingestion enhancements, API-driven data extraction, data modeling improvements, and security enhancements, with substantial reliability improvements. Key features and deliveries: - Flow manager for SISCAN extraction, historical extraction flow, and date parsing task to enable end-to-end SISCAN data processing (commit references in notes). - Un-commented and refined flow imports; improved flow manager logic; added scheduling and memory configuration updates for better throughput. - API-based DOu data extraction and text data handling improvements (text_title, text extraction update); credentials management with Infisical. - Mental health data integrated into the clinical history data mart; updated schemas and retrieval logic. Major bug fixes and stability improvements: - Execution order fixes across tasks; fixes in wait_for_operator_runs and parameter usage; headless mode enabled. - Scheduling start time, relative date handling, and parameter range updates to stabilize nightly/monthly runs. - Upstreams_tasks adjustments; main branch conflict resolution; removal of Vitacare imports to decouple dependencies. - Memory-related updates to flow and flow operator to improve performance. Overall impact and accomplishments: - Faster, more reliable data ingestion and processing with richer historical context and improved data quality. - Stronger security posture via Infisical credentials management. - Clearer data pipelines and schemas aligned with API sources and clinical history models. Technologies and skills demonstrated: - Python-based data pipelines, orchestration, and scheduling logic. - API integration, data modeling, and schema refactoring. - Security practices (Infisical) and headless test automation readiness. - Performance tuning through memory configuration adjustments and flow optimizations.

July 2025

23 Commits • 6 Features

Jul 1, 2025

July 2025: Core data platform improvements across prefeitura-rio/queries-rj-sms and prefeitura-rio/pipelines_rj_sms focusing on data freshness, quality, governance, and maintainability. Key outcomes include new ETL consistency data model with freshness monitoring; deprecation of outdated pipelines; data quality enhancements for patient contact data; corrected deduplication in prontuario datasets; and enrichment of Official Gazette decree extraction with new fields and flow ownership. These changes improve timeliness, reliability, and scalability while reducing maintenance overhead.

June 2025

37 Commits • 7 Features

Jun 1, 2025

June 2025 performance highlights: Delivered significant data platform enhancements across Queries-RJ-SMS and Pipelines-RJ-SMS, delivering measurable business value through improved data quality, reporting accuracy, and processing efficiency. Key features delivered included AIH data model rename with dedup, SUS carga_horaria integration, Vitacare schema evolution with dedup and identifier enhancements, and robust phone number standardization. Implemented GCS monitoring with Prefect reporting, DO U data extraction scheduling with parallelism, and batch size optimizations to reduce memory usage. Addressed stability fixes, refined schedules, and code cleanup to improve maintainability. Collectively these changes improved data timeliness, reliability, and regulatory reporting readiness.

May 2025

32 Commits • 11 Features

May 1, 2025

May 2025 performance summary: Delivered substantial data-model migrations, expanded SIH and Vitacare data coverage, and tightened data freshness controls. Achieved significant improvements in data quality, pipeline efficiency, and cost optimization through scope reduction and schema cleanups. This period enabled more reliable analytics, faster data availability, and maintainable data contracts across the Rio de Janeiro data platform.

Activity

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Quality Metrics

Correctness86.6%
Maintainability88.0%
Architecture83.8%
Performance79.2%
AI Usage20.8%

Skills & Technologies

Programming Languages

JinjaPythonSQLYAMLpythonyaml

Technical Skills

API IntegrationAirflowAutomationBeautifulSoupBigQueryCloud ComputingCloud Data WarehousingCloud InfrastructureCode CleanupCode RefactoringConcurrencyConfiguration ManagementData CleaningData EngineeringData Extraction

Repositories Contributed To

2 repos

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

prefeitura-rio/queries-rj-sms

May 2025 Oct 2025
6 Months active

Languages Used

JinjaSQLYAML

Technical Skills

Data CleaningData EngineeringData ModelingData TransformationData WarehousingDatabase Management

prefeitura-rio/pipelines_rj_sms

May 2025 Oct 2025
6 Months active

Languages Used

PythonYAMLpythonyamlSQL

Technical Skills

BigQueryData EngineeringETLBeautifulSoupCloud ComputingCloud Data Warehousing

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