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Gabriel Martelloti

@gabrielmartelloti

Senior Data Engineer at Qubika building dbt and BigQuery pipelines and integrating LLMs, MCPs, and chatbots into products.

Brazil

Message

At Qubika, I develop and maintain data pipelines and models with dbt and BigQuery, and integrate AI solutions including LLMs, MCPs, and chatbots into products.

Previously, I built a Terraform-deployed ETL platform at Blue Orange Digital and worked on Globoplay recommendations serving 2.5M+ users. At James Delivery, I applied forecasting, causal analysis, and customer segmentation to business questions.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer

Current

Qubika

Mar 2024 - Present (2 years 8 months)

Develop and maintain complex, efficient data pipelines and models with dbt and BigQuery. Handle modern cloud infrastructure, data-flow automation, query optimization and robust streaming data pipelines. Integrate and architect AI-based solutions including LLMs, MCPs and chatbots.

DBT BigQuery Data Pipelines Cloud Infrastructure Streaming LLM MCP Chatbot

Data Engineer

Blue Orange Digital

Jan 2022 - Feb 2024 (2 years 1 month)

Built an ETL platform with MWAA (Airflow), dbt on ECR/ECS and Snowflake, deployed with Terraform. Developed a near-real-time prospecting dashboard with dbt, Snowflake, Airflow and Cube.js on AWS, hosted on Docker and Kubernetes.

Airflow DBT Snowflake Terraform AWS Docker Kubernetes CubeJS ETL

Machine Learning Engineer

Globo

Jul 2021 - Jan 2022 (6 months)

Wrote feature SQL and versioned it with dbt, creating a CI/CD process. Built the full stack of a recommendation model on an internal platform based on MLflow and Airflow, serving recommendations to 2.5M+ users.

SQL DBT CI CD MLFlow Airflow Machine Learning Recommendation Systems

Senior Data Scientist

James Delivery

Mar 2020 - Jul 2021 (1 year 4 months)

Worked across marketing, logistics, finance, commercial and retail, presenting directly to the C-level. Performed time-series forecasting, causal analysis, survival analysis, and customer segmentation.

XGBoost LightGBM Prophet Time series Forecasting Causal Inference Survival Analysis K Means Hierarchical clustering

Data Scientist

James Delivery

Mar 2020 - Nov 2020 (8 months)

XGBoost LightGBM Prophet Time series Forecasting Causal Inference Survival Analysis K Means Hierarchical clustering

Data Scientist

EBANX

Jul 2019 - Feb 2020 (7 months)

Extracted, cleaned and processed data with Python, Pandas and NumPy for weekly/monthly reports. Built complex dashboards in Tableau and Google Data Studio. Helped build an anti-fraud system using logistic regression.

MySQL PostgreSQL Python Pandas NumPy Tableau Google Data Studio Logistic Regression