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Professional experience, education, and selected projects.

Contact Information

Name Sean Sica
Professional Title Research Engineer
Email sean@sica.io

Professional Summary

Research engineer focused on mechanistic interpretability and AI safety. Leading software at MITRE ATT&CK while conducting interpretability research using sparse autoencoders and causal interventions. MS in Data Science from UC Berkeley.

Experience

  • 2023 -

    Bedford, MA

    Lead Software Engineer
    The MITRE Corporation
    Leading the ATT&CK software team and conducting mechanistic interpretability research on MITRE’s Federal AI Sandbox.
    • Bootstrapped MITRE’s interpretability research effort; led sprint developing in-house tooling for SAE training and automated feature analysis
    • Contributed Kubernetes support and Azure inference integration to Neuronpedia (open-source interpretability platform)
    • Building agent-based system for ML experiment and training run management
    • Lead 10+ open-source ATT&CK tools used by thousands of organizations worldwide
    • Authored the ATT&CK Data Model — first codified expression of the ATT&CK taxonomy as a TypeScript library
  • 2021 - 2023

    Bedford, MA

    Senior Software Engineer
    The MITRE Corporation
    Software engineer on the MITRE ATT&CK team.
    • Designed, deployed, and maintained the production ATT&CK TAXII 2.1 server (attack-taxii.mitre.org)
    • Built REST APIs and open-source Python/TypeScript libraries for ATT&CK data distribution
  • 2018 - 2021

    Bedford, MA

    Network Engineer
    The MITRE Corporation
    Infrastructure engineer for MITRE’s Bedford campus datacenter.
    • Designed and productionized Cisco ACI network fabric
    • Completed BS in Computer Science at Boston University while working full-time
  • 2017 - 2018

    Portsmouth, NH

    Lead IT Systems Engineer
    Neoscope
    • Lead integration engineer for managed services provider
    • End-to-end infrastructure refresh projects, from assessment through delivery

Education

  • 2023 - 2025

    Berkeley, CA

    Master of Information and Data Science
    University of California, Berkeley
    Information and Data Science
    • Focus: Generative AI, NLP, and mechanistic interpretability
    • Research: Causal effects of fine-tuning on sparse autoencoder features
    • Capstone: F1 Safety Car Prediction Engine — selected for Berkeley Summer 2025 Showcase
  • 2017 - 2021

    Boston, MA

    BS
    Boston University
    Computer Science

Publications

Skills

ML & Interpretability: PyTorch, TransformerLens, SAELens, NNSight, Sparse Autoencoders, DeepSpeed, LangChain
Languages: Python, TypeScript, JavaScript, Java, SQL
Infrastructure & MLOps: Docker, Kubernetes, Slurm, AWS, MongoDB, PostgreSQL
Frameworks: Express.js, Nest.js, Spring Boot, Next.js, React

Certificates

  • CCNA Routing & Switching - Cisco (2017)
  • CCNA Wireless - Cisco (2018)

Interests

AI Safety & Alignment: Mechanistic Interpretability, Sparse Autoencoders, Activation Analysis, Representation Engineering
Open Source: Neuronpedia, MITRE ATT&CK, Developer Tools