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Daniel Berhane Araya - Graduate Research Assistant in Fairfax, VA

Daniel Berhane Araya

Senior AI/ML Engineer specializing in production-grade LLM systems for regulated finance

George Mason UniversityGeorge Mason UniversityFairfax, VA9 Years ExperienceSenior LevelWorks On-Site

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About

AI/LLM engineer with published work who built FinVet, a production financial misinformation detection system using multi-pipeline RAG, confidence-based voting, and evidence-backed outputs (F1 0.85, +37% vs baseline). Also built NexusForest-MCP, a Dockerized Model Context Protocol server exposing structured global deforestation/carbon data via SQL tools for reliable LLM tool use. Previously delivered borrower risk-rating (PD) models at BMO Financial Group that were validated and integrated into an enterprise credit system through close collaboration with credit officers and portfolio managers.

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Key Strengths

  • Built and deployed production AI systems with multi-component architectures (RAG + APIs + UI)
  • Designed financial misinformation detection with evidence, sources, and confidence scoring
  • Improved model performance to F1=0.85 (~37% over baseline) and published the work
  • Reliability-focused design: safe failure modes (e.g., 'not enough information') and strict schema validation
  • Strong evaluation discipline: curated test suites (100 queries), edge-case coverage, and retrieval metrics (precision/recall)
  • Effective orchestration of agentic workflows using LangGraph state-machine/graph patterns
  • Integrated LLMs with structured climate datasets via MCP + SQL tools; solved sparse/wide-table issues through normalization
  • Cross-functional delivery: translated credit risk models into business logic for non-technical stakeholders; enterprise adoption after validation

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Experience

Graduate Research AssistantGeorge Mason University · Jun 2024 – Present
Data Scientist, Stress Testing & ReportingBMO Financial Group · Jul 2021 – Jan 2024
Data Scientist, Wholesale Credit MethodologyBMO Financial Group · Nov 2019 – Jan 2021
Senior Risk AnalystBMO Financial Group · Feb 2017 – Nov 2019
Graduate Research AssistantWestern University · Sep 2014 – Aug 2016

Education

George Mason Universitymaster, Data Analytics Engineering
Western Universitymaster, Electrical and Computer Engineering
University of Asmarabachelor, Physics

Skills

PythonNumPyPandasSQLPostgreSQLSQLiteLinuxGitDockerPyTorchHugging Face TransformersLLaMALoRARetrieval-Augmented Generation (RAG)FAISS

Languages

English

Certifications

Summer Bootcamp on Deep Learning and Applications — William & Mary and Wake Forest University (2024)Computer Science - Wits University

Publications

2 publications

Financial misinformation detectionRetrieval-augmented generation (RAG)Multi-agent AI systemsFact-checking agentsAnomaly detectionBuilding energy consumption analyticsEnsemble learning

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Daniel Berhane ArayaSenior AI/ML Engineer specializing in production-grade LLM systems for regulated finance