Sofia Tejada
La Palma,CA
Summary
Computer Science honors junior (Applied Math minor, GPA 3.7) seeking a Data Science/ML internship. Research assistant building a diagram-first cybersecurity tutor and studying explainable LLM personas, with additional experience from a Latitude AI ML fellowship and teaching Python/CS fundamentals.
Overview
1
1
year of professional experience
1
1
Certification
Work History
Undergraduate Research Assistant (AI Learning Systems and Explainable LLMs)
California State University
08.2025 - Current
- Research assistant building a diagram-first, lab-aware cybersecurity learning assistant and studying explainable LLM personas.
Coding Coach (Part-time)
theCoderSchool
06.2025 - Current
- Mentor students ages 7 to 12 in Python, foundational data structures, and introductory AI concepts through hands-on projects and structured exercises.
- Debug student code in real time and teach clean coding habits, problem decomposition, and algorithmic thinking.
Machine Learning Fellow
Latitude AI Fellowship
09.2025 - 12.2025
- Developing ScholarViz, a diagram-first, lab-aware cybersecurity learning assistant that routes student questions via a small ontology (knowledge graph) and supports evidence-based coaching using simulated lab artifacts (logs, email headers, PCAP snippets).
- Investigating LLM persona consistency and explainability by prompting models to produce structured justifications and analyzing failure modes such as post-hoc rationalization, inconsistency across prompts, and overconfidence.
- Trained Mask R-CNN on BDD100K and Cityscapes; built evaluation pipeline (IoU metrics, threshold sweeps, confusion matrix).
- Presented results and failure modes to Latitude AI engineers; proposed extensions (SAM-style foundation models).
Education
B.S. Honors - Computer Science, Applied Mathematics
California State University
05.2027
Skills
- Researching skills
- Data analysis
- Python
- SQL
- C
- JavaScript
- Scikit-learn
- XGBoost
- PyTorch
- PyTorch Lightning
- Pandas
- NumPy
- SciPy
- SpaCy
- Sentence-BERT
- TF-IDF
- Git
- Conda
- Jupyter
- Linux basics
- Matplotlib
- React
- Flask
- K-means clustering
Certification
- Cornell Machine Learning Foundations
- Complete Guide for Generative AI for Data Analysis and Data Science
Languages
- English, Advanced
- Spanish, Advanced
Timeline
Machine Learning Fellow
Latitude AI Fellowship
09.2025 - 12.2025
Undergraduate Research Assistant (AI Learning Systems and Explainable LLMs)
California State University
08.2025 - Current
Coding Coach (Part-time)
theCoderSchool
06.2025 - Current
B.S. Honors - Computer Science, Applied Mathematics
California State University