(Data Engineer · Full-Stack) — Based in San Jose, CA

Engineering datayou can actuallytrust.

I build production data pipelines, AI products, and self-serve analytics that turn messy operational data into decisions companies actually trust.

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(01) About

A shortintroduction.

I'm a Data Engineer and full-stack software engineer with 4+ years building ETL pipelines, canonical data models, and the dashboards that power company-wide reporting.

I work the full surface area — Python, SQL, dbt, and the BI tools on top — and I partner closely with Product, GTM, and executive teams to translate fuzzy questions into scalable, high-integrity data products.

I care deeply about building helpful, honest, and harmless AI, and I'm drawn to teams shipping work in that direction.

Stack
Data & ETLdbt · Airflow · PySpark · pandas · BigQuery · Postgres
LanguagesPython · SQL · TypeScript · R · Swift · C
BI & VizPower BI · Tableau · Looker · Data modeling
CloudAWS · EC2 · S3 · SageMaker · Kubernetes · GitHub CI/CD
ML & AITensorFlow · Keras · Scikit-learn · LLM fine-tuning · Vector DBs
(02) Work

Selectedexperience.

  1. 01

    Infinite Music (Thizzler on the Roof)

    Technology Lead — Full-Stack Software Engineer

    • Built infinitemusic.io end-to-end — security, backend (FastAPI/Python/SQL), and frontend (TypeScript/React) — delivering an internal platform for digital distribution, royalties, and release management.
    • Designed multi-step ETL pipelines integrating 4+ royalty data sources into canonical datasets, powering self-serve dashboards that reduced ad-hoc reporting requests by ~80%.
    • Optimized MySQL/PostgreSQL query performance, established data integrity standards, and led cross-functional sprints with offshore teams.
    Jun 2025 — Present
  2. 02

    Ask Coach!

    Data / ML Engineer

    • Built the AI engine powering Coach's Pick, a sports betting app — unifying decentralized sources into a centralized Postgres database feeding TensorFlow prediction models for game outcomes and player props across all major U.S. sports.
    • Architected scalable data pipeline integrations with live sports analytics APIs (Python, Swift), establishing SLAs for timely, accurate delivery of real-time feeds.
    Mar 2023 — Present
  3. 03

    San Jose Fire Department

    IT Analyst — Data & Analytics

    • Defined key metrics, built capacity planning forecasts, and developed Power BI dashboards that informed strategic resource allocation for 1,500+ personnel.
    • Analyzed large-scale operational data to identify preemption trouble zones, delivering insights that reduced emergency response bottlenecks by 20%.
    • Translated stakeholder data needs into technical requirements for the IT Master Plan. Awarded Devoted Service (Class C).
    Dec 2023 — Jun 2025
  4. 04

    Los Angeles Apparel / Yeezy

    AI Engineer & Consultant

    • Designed scalable data pipelines and AI-driven products for production optimization; advised cross-functional teams on AI integration strategy.
    Oct — Dec 2023
  5. 05

    Orange (Global Telecom)

    Data Scientist Intern

    • Built a universal internal chatbot (vector DBs + GPT-4) that improved self-serve knowledge accessibility globally.
    • Deployed and fine-tuned LLMs (Llama 2, Falcon-40B) on AWS — reduced video editing time 75% and newsletter production 50% with custom GPT-3 models.
    • Authored Generative AI reports for C-suite stakeholders on training and usage ethics.
    • Co-authored peer-reviewed paper at ACL LoResMT 2023 on the Bambara-French Machine Translation Competition.
    Oct 2022 — Aug 2023
(04) Contact

Let's build something
worth trusting.

masonmdelrio@gmail.com
LocationSan Jose, California
Phone208-761-9082
ElsewhereLinkedIn / Email