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CJM

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Ceferino Jason Malabed

Data Scientist & Engineer

I’m a San Francisco-based data scientist passionate about using data and machine learning to solve meaningful, real-world problems. Outside of modeling and code, you’ll usually find me staying active on the volleyball court, exploring new corners of SF, or planning my next travel adventure. Above all, I’m grounded by quality time with family and great friends, always looking for good food and new experiences along the way.

Ceferino Jason Malabed

Based in

San Francisco, CA

About me

About me

I build thoughtful, well-tested software and translate complex research into work people can actually use.

I am a data scientist and machine learning practitioner focused on turning complex, high-dimensional data into robust predictive models and real-world systems. With a strong foundation spanning classical machine learning, deep learning architectures, and scalable MLOps, I build pipelines designed not just for high benchmark accuracy, but for reliability, low-latency deployment, and measurable impact.

My work bridges technical rigor with high-stakes problem-solving—from developing time-series models that forecast critical real-time indicators to analyzing millions of records to uncover systemic patterns and drive algorithmic accountability. Whether engineering end-to-end data pipelines on cloud infrastructure, fine-tuning model architectures, or designing automated monitoring to prevent data drift, I focus on building transparent, reproducible, and production-ready solutions.

Currently, I am looking to collaborate on high-impact machine learning and data engineering initiatives. If you are building data-driven systems that require both technical precision and thoughtful execution, let’s connect.

Based in
San Francisco, CA
Focus
ML engineering, Data, Software
Education
M.S. Data Science & AI, University of San Francisco
Languages
English, Spanish

Résumé

Where I've worked

The roles that shaped how I work, in reverse chronological order.

  1. Data Scientist

    Oct 2025June 2026

    American Civil Liberties Union (ACLU) of Northern California · San Francisco, CA

    Built machine learning systems for algorithmic accountability work — real-time LLM agents, large-scale public records analysis, and anomaly detection used to support legal action and city policy.

    • Engineered and deployed an autonomous, LLM-driven AI agent (Python, PyTorch) to ingest and analyze police body camera footage in real time, mapping telemetry against civil rights protocols to flag non-compliance patterns.
    • Unified disparate public data silos by ingesting and cross-referencing 1M+ Automated License Plate Reader (ALPR) records with emergency call logs using PySpark and SQL.
    • Implemented unsupervised anomaly detection frameworks (Isolation Forests) to benchmark compliance and equity across diverse demographics.
    • Translated complex statistical anomalies and predictive pipeline findings into executive-ready data visualizations and technical frameworks to support public-sector legal action and city policy updates.
    • Python
    • PyTorch
    • PySpark
    • SQL
    • LLM agents
    • Anomaly detection
    • Data visualization
  2. On-Site Manager / Production Assistant

    Dec 2022July 2025

    Stanlee Gatti Designs · San Francisco, CA

    Ran on-site production and acted as the technical point of contact for high-profile events, coordinating vendors, logistics, and spatial planning under live deadlines.

    • Served as primary technical point of contact for high-profile clients and enterprise VIP stakeholders, conducting discovery to resolve real-time operational issues in fast-paced environments.
    • Streamlined complex vendor workflows and physical logistics using AutoCAD to generate precise structural and spatial layouts, increasing operational efficiency.
    • Client management
    • AutoCAD
    • Vendor operations
    • Logistics
  3. Network Operations Center (NOC) Technician

    Nov 2020Sep 2022

    McMillan Electric · San Francisco, CA

    Managed technical project delivery and network infrastructure assessments for high-rise commercial and residential properties across the San Francisco Bay Area, deploying telemetry-driven risk assessment models to diagnose connectivity vulnerabilities, remediate outages, and ensure high-availability network performance.

    • High-Rise Connectivity Assessments: Directed end-to-end diagnostic evaluations and infrastructure remediations across San Francisco Bay Area high-rises, isolating signal degradation, routing issues, and physical-layer bottlenecks to optimize network uptime.
    • Operations & Incident Remediation: Served as a core point of escalation within the Network Operations Center (NOC), establishing automated telemetry alerting and rapid-response protocols to resolve critical connectivity issues.
    • Multi-Project Technical Management: Oversaw project lifecycles for concurrent network builds and troubleshooting deployments, coordinating cross-functional technical teams to deliver within rigorous SLA, security, and architectural standards.
    • Project Management
    • Network Administration

Skills & tools

Languages & Core Frameworks

  • Python
  • SQL
  • PySpark
  • Bash
  • Scikit-Learn
  • PyTorch
  • TensorFlow
  • XGBoost
  • Pandas
  • NumPy

Machine Learning & AI

  • LLM agents
  • Multi-agent orchestration
  • Deep learning
  • NLP
  • Time series analysis
  • Anomaly detection (Isolation Forests)
  • A/B testing
  • Computer vision (CNNs)

Data Engineering & Cloud

  • Distributed computing
  • ETL pipelines
  • Google Cloud Platform (GCP)
  • REST APIs
  • SQL databases

MLOps & Developer Tools

  • Docker
  • Git
  • CI/CD pipelines
  • Model deployment
  • Matplotlib
  • Plotly

Projects

Things I've built

A selection of work with the context behind it — what the problem was, what I did, and how it turned out.

Spiffy apparel resale prediction app
2026Modeling & web app

Spiffy

Apparel resale price prediction, trained on 500,000 listings.

A web application that estimates what a piece of apparel will resell for. An XGBoost regression pipeline trained on 500,000 listings predicts resale value to a $30.90 mean absolute error, and a PyTorch convolutional neural network handles multi-class visual classification so new listings can be categorized automatically at ingestion.

  • Python
  • XGBoost
  • PyTorch
  • CNN
  • Web app
Agentic workout planner and coach
2025 — presentDesign & implementation

Agentic Workout Planner and Coach

A multi-agent coach that plans training around the time you actually have.

A personalized multi-agent workflow that uses LLM reasoning, prompt engineering, and context-aware orchestration to evaluate a user's goals against their changing circumstances. An optimization routine queries the Google Calendar API to ingest schedule data and plan sessions autonomously in whatever blocks are open.

  • LLM agents
  • Multi-agent orchestration
  • Prompt engineering
  • Google Calendar API

Presentations

Talks & posters

Work I've shared with an audience — conference talks, invited seminars, and poster sessions.

Noisy Conversation Analysis with Private, Local Models
Technical presentation2026

Noisy Conversation Analysis with Private, Local Models

University of San Francisco, CA

Following the federal class-action settlement in Mathis v. County of Siskiyou—which addressed significant racial profiling patterns in traffic stops—independent monitoring required extensive auditing of traffic stop interactions. Manually reviewing hundreds of hours of body-worn camera (BWC) footage is time- and labor-intensive. This project implements an automated, privacy-preserving transcription and legal audit pipeline designed to scale oversight and accountability.

  • Speech AI
  • Data Engineering
  • Docker/Containerization
  • Hugging Face
  • MLOps
San Jose ALPR analysis
Technical presentation2026

San Jose ALPR Analysis

ACLU of Northern California - Video Call Presentation

An analysis of San Jose Automated License Plate Reader data to identify patterns and anomalies.

  • Python
  • Pandas
  • Matplotlib
  • Seaborn

Education

Where I studied

Degrees and the coursework behind them.

Jul 2025Jul 2026

Master of ScienceData Science and A.I.

University of San Francisco · San Francisco, CA

    Selected coursework

    • Machine Learning
    • Deep Learning
    • Data Acquisition
    • Distributed Computing
    • Time Series Analysis
    • A/B Testing
    • Relational Databases
    • MLOps
    • Generative AI

    Aug 2014Dec 2017

    Bachelor of ScienceSoftware Engineering

    Chapman University · Orange, CA

    • Minor in Computer Science

    Selected coursework

    • Calculus I, II
    • Data Structures and Algorithms
    • Object-Oriented Programming
    • Software Engineering Principles
    • Web Development
    • Mobile App Development
    • DevOps

    Contact

    Let's connect!

    I'm looking to collaborate on high-impact machine learning and data engineering work. Email is the fastest way to reach me, and LinkedIn works just as well.