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  • Maplink
  • Fortaleza - Ceará, Brazil.
  • 16:25 (UTC -03:00)
  • LinkedIn in/diegonac

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diego-nac/README.md

Diego Melo — Data Analyst & Data Engineer

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Diego Melo's personal Octocat working on a laptop

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About me

I build reliable data models, ELT pipelines, analytical workflows, and data products with Python, SQL, BigQuery, and Google Cloud. At Maplink, I work with operational and geospatial data to support analytics and product decisions.

I am also an MSc student in Computer Science at the Federal University of Ceará (UFC), researching GraphRAG and graph-based information retrieval for Large Language Models. My work sits at the intersection of data engineering, analytics, and production-oriented AI systems.

SourcesIngestionTransformationWarehousingAnalyticsAI Systems

APIs · events · files → Python · Pub/Sub · RabbitMQ → SQL · ELT · data quality → BigQuery · PostgreSQL · Cloud Storage → BI · insights · experiments → RAG · GraphRAG · LLM agents

What I work with

Data Engineering

  • ELT/ETL pipelines and data integration
  • Analytical and dimensional data modeling
  • Data quality, governance, and observability
  • BigQuery, PostgreSQL, MySQL, and MongoDB
  • Event-driven and distributed data workflows

Data Analytics

  • Exploratory and statistical data analysis
  • Operational, product, and geospatial analytics
  • Looker Studio, Tableau, Plotly, and Matplotlib
  • Experimentation and predictive modeling
  • Translating complex data into business insights

Cloud & Delivery

  • Google Cloud Platform and BigQuery
  • Cloud Run, Cloud Functions, and Pub/Sub
  • Vertex AI and Cloud Storage
  • Docker, Linux, GitHub Actions, and CI/CD
  • Python and Bash automation

AI & Retrieval

  • Machine learning and NLP
  • LLM agents and retrieval-augmented generation
  • Embeddings, vector search, and semantic search
  • GraphRAG and knowledge graphs
  • LangChain, TensorFlow, and LLMOps

Technology stack

Core technology icons

Layer Technologies
Languages & Analysis Python · SQL · JavaScript · Bash · Pandas · NumPy · Matplotlib · Plotly
Data Platform BigQuery · PostgreSQL · MySQL · MongoDB · ELT/ETL · Data Modeling · Data Quality
Cloud & Delivery GCP · Cloud Run · Cloud Functions · Pub/Sub · Vertex AI · Cloud Storage · Docker · CI/CD
Analytics Looker Studio · Tableau · Data Visualization · Statistical Analysis · Experimentation
AI & Retrieval Machine Learning · NLP · LLM Agents · LangChain · Embeddings · Vector Search · RAG · GraphRAG
Messaging & Automation RabbitMQ · n8n · Event-Driven Architecture · Workflow Automation

Featured work

Multi-source scholarly search with parallel collection, DOI/BibTeX/PDF enrichment, normalization, filtering, and CLI delivery.

Python APIs Playwright Data Enrichment

Academic extraction pipeline spanning heterogeneous sources with asynchronous processing and standardized JSONL outputs.

Python Async IO Web Scraping JSONL

Academic analytical notebooks covering regression, classification, KNN, decision trees, and statistical evaluation.

Python Pandas NumPy Scikit-learn

Sensor-data EDA, PCA, regression, classification, cross-validation, and IEEE-style technical reporting.

Jupyter Machine Learning PCA EDA

Academic event-driven sensor system integrating RabbitMQ, gRPC, Flask, and REST interfaces.

Python RabbitMQ gRPC Distributed Systems

Interactive analytical visualization exercises and published explorations built with Vega-Lite.

Vega-Lite JavaScript Visual Analytics

Explore all 16 public repositories

Data, Analytics & Research

Systems & Web Foundations

Profile

  • diego-nac — source for this GitHub profile.

Forks & Learning References

GitHub intelligence

Diego Melo's public GitHub activity statistics
Public GitHub activity — commits, contributions, pull requests, issues and repositories. These numbers represent public activity, not technical proficiency.



Diego Melo's GitHub contribution snake

Experience

Maplink · Data & Innovation Analyst Jr. · Apr 2024 – Present
  • Develop data models and ELT pipelines that support analytics and product decisions.
  • Monitor data quality and optimize analytical workflows with Python, SQL, and BigQuery.
  • Build data products integrating geospatial and operational datasets.
  • Contribute to AI-driven systems using LLM agents, vector search, and retrieval-based architectures.
  • Collaborate across teams on analytical infrastructure and data-governance practices.
Maplink · IT Intern · Apr 2022 – Apr 2024
  • Supported internal data solutions and process-automation workflows.
  • Worked on data extraction, transformation, visualization, and operational analytics.
  • Helped build internal analytical tools for business decision-making.
Dell Lead · Python Trainee & Developer Scholar · Sep 2021 – Jan 2022
  • Completed technical training in Python development and applied data science.
  • Developed NLP prototypes for customer-support automation.
  • Worked with NumPy, Pandas, Matplotlib, Flask, PyMongo, and TextBlob.
Fix Tecnologia · IT Intern · Aug 2021 – Oct 2021
  • Developed an institutional website with JavaScript and PHP.
  • Implemented dynamic content management, an administration dashboard, and email automation.

Education & research

  • MSc in Computer Science · Federal University of Ceará (UFC) · 2026–2028
    Research focus: GraphRAG and graph-based information retrieval for LLMs.
  • BSc in Computer Engineering · Federal University of Ceará (UFC) · 2022–2026
    Capstone: comparative analysis of predictive models for streamflow forecasting.
  • Technical Degree in Informatics · EEEP Joaquim Antônio Albano · 2018–2021

Selected credentials

  • NVIDIA — Fundamentals of Deep Learning (issued 2023)
  • Google — Google Maps Tech Credential Exam (issued 2022)
  • Google — Google Maps Sales Fundamentals Credential (issued 2022)
Additional learning & languages
  • Additional training in Python, JavaScript, PHP, Android development, UI/UX, and application prototyping.
  • Portuguese — native · English — working proficiency · French — elementary proficiency.

Let's connect

I am open to exchanging ideas and collaborating on data engineering, analytics, information retrieval, and applied AI.

LinkedIn Email

Building the path from raw data to reliable decisions.

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  1. login-system login-system Public

    Sistema de login para o estudo de Flask.

    Python

  2. severoemanuel/eeepjaa severoemanuel/eeepjaa Public archive

    PHP 1