Rumi Alexander Elías Calles

rumi.calles@gmail.com · +1 (973) 936-4084 · https://www.linkedin.com/in/rumi-calles/

About

Director of Research Engineering @ micro1. BSc Data Science; MA Humanities. Classical languages, philosophy of mind, and AI.

Experience

  1. Director of Research Engineering at micro1

    Remote, Traveler

    RL environments and post-training.

    • Ship RL environments for production post-training: task specs, rewards, eval loops
    • Own post-training: data, reward models, policy iteration
    • Set standards for environment quality, training stability, and eval
  2. Founder & Researcher at Aeterna Institute

    New York, NY, On site

    Classical liberal arts. Trivium, Quadrivium, Socratic method.

    • Founded the institute. Curriculum on the Seven Liberal Arts
    • Coursework from primary texts and dialectic
    • Small community of fellows
  3. AI Researcher at Wolfram Institute

    New York, NY, Remote

    Minds, machines, intelligence. Conceptual spaces, AI philosophy, consciousness.

    • Machine ethics, bias, and explainability
    • Abliterator: activation engineering for LLM personality
    • Experiments in Mathematica and Python
    • Mathematica
    • Python
    • AI
    • Machine Learning
    • Ethics in AI
  4. AI Engineer at Stealth

    New York, NY, On site

    Production LLM systems for NLU and recommendation eval.

    • LLM pipelines that lifted NLU quality ~40% across domains
    • Eval platform for recommendation models. Accuracy up ~30%
    • Model implementation through production
    • Python
    • HuggingFace
    • PyTorch
    • Docker
    • Redis
    • wandb
    • FastAPI
    • Ollama
  5. Adjunct Professor at Fei Tian College

    Middletown, NY, Remote

    Ethics of computing. AI governance.

    • Teach ethics of computing, AI governance, and privacy
    • Primary frameworks with data-ethics cases
    • Course design and instruction
    • Ethics in AI
    • Artificial Intelligence
    • Teaching
    • Philosophy
  6. Data Scientist at The Epoch Times

    New York, NY, Hybrid

    Predictive modeling, pipelines, and NLP for a publisher.

    • Churn models that cut subscriber attrition ~20%
    • Python/Hive pipelines. Ops throughput up ~25%
    • BERT and clustering over unstructured content
    • Automated reporting for executives
    • Projects from framing through deployment
    • Measurement and modeling with product and editorial
    • Python
    • Hive
    • MySQL
    • Apache Superset
    • Machine Learning
  7. CTO & Executive Board Member at Students for Falun Gong

    Remote, Remote

    Technical lead for an international nonprofit.

    • Multilingual site and servers
    • International conferences and logistics
    • Advocacy at the International Religious Freedom Summit
    • Digital infrastructure
    • Work with international teams
    • WordPress
    • Web Development
    • Server Management
    • Event Organization
    • Advocacy
  8. Data Analytics Research Assistant at UD Social Neuroscience Lab

    Delaware, Remote

    Python stats for social neuroscience experiments.

    • PsychoPy tooling that cut the lab's data pipeline ~30%
    • Python
    • PsychoPy
    • Statistics
    • Research
  9. Data Scientist at Litespeed Technologies

    Middletown, NY, Intern

    Data mining and reporting for executives.

    • Mining scripts that cut processing time about in half
    • Analysis across company data streams
    • Go
    • Python
    • MongoDB
    • PHP
    • Data Mining
  10. Data Analytics Alumni at NASA

    Middletown, NY, Remote

    Time series and geospatial analysis.

    • USGS geospatial maps under NASA, UN, and USGS mentorship
    • QGIS
    • JavaScript
    • Geospatial Analysis
    • Data Visualization
  11. Full-Stack Developer & Assistant Creative Director at The Werking Title Gallery

    San Diego, CA, Remote

    Web platform and client sites for a gallery.

    • Shipped the gallery site and client sites
    • JavaScript
    • React
    • Node.js

Publications

AI systems and evaluation

  1. 2025 Uncovering Candidate Potential with Multi-Modal AI Assessments ResearchGate · research paper · Lead author
    Uncovering Candidate Potential with Multi-Modal AI Assessments

    AI Match Score beats résumé screening by 16% AUC and finds 2× more qualified candidates.

    Our AI Match Score combines resume analysis, structured interviews, and role-specific evaluations to outperform traditional screening by 16% (AUC: 0.742 vs. 0.641). It surfaces nearly twice as many qualified candidates, capturing unique potential signals beyond what resumes reveal.

  2. 2025 Evaluating Speech-to-Text x LLM x Text-to-Speech Combinations for AI Interview Systems arXiv · preprint · Lead author
    Evaluating Speech-to-Text x LLM x Text-to-Speech Combinations for AI Interview Systems

    Voice-stack comparison across 300k+ AI-conducted interviews.

    We present a large-scale empirical comparison of speech-to-text, LLM, and text-to-speech combinations using data from over 300,000 AI-conducted job interviews. Our analysis reveals that Google's STT with GPT-4.1 and Cartesia's TTS outperforms alternatives in both objective quality metrics and user satisfaction scores.

Philosophy of AI

  1. 2026 De Suspensione: Inflection, Composition, and the Long Drift Outward ResearchGate · research paper · Lead author
    De Suspensione: Inflection, Composition, and the Long Drift Outward

    On suspensio, the inner act of holding thought while form catches up. Latin inflection, digital memory, and generative AI.

    Three historical migrations — the Latin-to-Romance simplification, the digital externalization of memory, and the offloading of sentence production to generative AI — converge on a single mental practice: suspensio, the inner act of composition once trained by the Trivium and by case-marking grammars that obliged the speaker to track relation internally. Drawing on classical-language impact studies, Romance morphosyntactic typology, neuro- and psycholinguistic work on grammar and thought, and recent empirical work on cognitive offloading and large language models, the paper rejects the strong Whorfian thesis that simplification produced cultural shallowness, defending instead the narrower claim that form, content, and production now migrate outward together — and that compositional practice can thin under AI assistance.

  2. 2025 From Plato to Pixels: Imagination, AI, and the Whole ResearchGate · research paper · Lead author
    From Plato to Pixels: Imagination, AI, and the Whole

    Imagination from Plato's Forms to generative AI. What machines still cannot make.

    This philosophical exploration traces imagination's evolution from Plato's Forms through medieval theology to modern fragmentation, examining whether AI can truly simulate human creativity. It argues that imagination remains humanity's essential faculty for synthesizing meaning from chaos, even as machines attempt to replicate creation.

  3. 2025 PhiloBERTA: A Transformer-Based Cross-Lingual Analysis of Greek and Latin Lexicons arXiv · preprint · Lead author, with Makai L. Allbert
    PhiloBERTA: A Transformer-Based Cross-Lingual Analysis of Greek and Latin Lexicons

    Cross-lingual transformer on ancient Greek and Latin lexicons.

    A cross-lingual transformer model measuring semantic relationships between ancient Greek and Latin lexicons, revealing significant alignments in philosophical concepts.

Interpretability

  1. 2024 Identifying and Manipulating Personality Traits in LLMs Through Activation Engineering arXiv · preprint · Lead author
    Identifying and Manipulating Personality Traits in LLMs Through Activation Engineering

    Abliterator. Steering LLM personality through activation engineering.

    We introduce Abliterator, a framework for studying and manipulating personality traits in large language models (LLMs) through activation engineering.

Skills

AI Research, Machine Learning, NLP & LLMs, Data Science, Research Engineering

AI & ML

  • PyTorch
  • Transformers
  • LangGraph
  • MCP
  • OpenEnv
  • Harbor
  • vLLM
  • LiteLLM
  • TransformerLens
  • Verifiers
  • Unsloth
  • wandb

Languages & Data

  • Python
  • TypeScript
  • Go
  • R
  • Mathematica
  • Pandas
  • Polars
  • NumPy
  • Plotly
  • Streamlit

Infrastructure & Tooling

  • Docker
  • Kubernetes
  • FastAPI
  • Ollama
  • Git
  • GitHub
  • AWS
  • Google Cloud
  • Spark
  • PostgreSQL
  • Redis

Education

  1. Ralston College

    2023–2024

    Master of Arts in Humanities

    • Full-tuition scholarship
    • Greek Language Residency
    • Study in Greece and Turkey
  2. Fei Tian College Middletown

    2019–2023

    Bachelor of Science in Data Science

    • First place, hackathon
    • Academic excellence award
  3. Academia Vivarium Novum

    2024–2025

    Immersive Program in Classical Studies and Philosophy

    • Lived in Latin and Ancient Greek
    • Primary texts, philosophy, and rhetoric in the original languages
  4. Wolfram Summer School

    2024–2024

    Certificate in Artificial Intelligence & Philosophy

    • Research in AI and large language models
    • Wolfram Language experiments
  5. National Taiwan Normal University

    2023–2023

    Language Studies in Mandarin Chinese

    • Huayu Scholarship recipient
  6. Center for Hellenic Studies, Harvard University

    2023–2023

    Visiting Greek Scholar in Greek Studies

    • Full-time Greek residency
    • Seminars with visiting Hellenists

Certifications

Projects

  • Memento Vitae

    Life in remaining weeks. Time allocation and mortality accounting.

    • Life grid of ~4,000 weeks with current-week tracking
    • Breakdown of how sleep, work, and habits consume remaining time
    • Concrete counts: visits left, books, summers remaining
  • Loqui TTS

    Local TTS on Apple Silicon. Voice cloning, multilingual, no cloud.

    • Voice cloning and 10-language support via Qwen3-TTS
    • Metal GPU inference with live system monitoring
    • React + FastAPI with in-browser model downloads
  • Latinium.ai

    Latin tutor with live grammar analysis and interactive annotation.

    • NLP grammar engine for case, tense, and syntax
    • Hover annotations with model-backed tutoring
    • Translation that preserves literary register
  • Gentleman's Codex

    Guide to men's style. Cut, color, rules.

    Live
    • Four-chapter curriculum with quizzes and style archetype assessment
    • Outfit builder with compatibility scoring
    • Color wheel and curated palettes
  • ColorLab.ai

    Color analysis from selfies. Seasonal palettes and style guidance.

    Live
    • Selfie analysis on Next.js
    • Model-backed seasonal palette recommendations
    • LangChain workflows for style guidance
  • LLM Abliterator

    Toolkit for steering LLM personality through activation engineering.

    • Identify and edit personality-related activation vectors
    • Personality steering with low compute overhead
    • Interpretability tests with ethical analysis
  • Ancient Greek Resources

    Classical Greek. Texts, grammar, lexicography.

    Live
    • Annotated texts, grammar references, and lexicographical tools
    • Spaced repetition for morphology
    • Content standards aimed at classroom use