Business Analytics · AI & Data

Boglarka Petruska

MS Business Analytics graduate (with Distinction) from Central European University. The common denominator across my career is staying grounded in how businesses actually operate: inside their systems, behind their numbers, and within their regulatory environments. Backed by nearly two decades in financial ops, tech, and law, I am seeking analytics roles where rigorous thinking meets modern data tooling.

Boglarka Petruska

About

I recently completed an MS in Business Analytics at Central European University, graduating with Distinction (3.81 / 4.0 GPA) and receiving the Outstanding Capstone Project Award for my cohort. My academic work spans deep learning, time series forecasting, causal inference, geospatial analysis and data engineering, culminating in a capstone for an industry sponsor where I built and benchmarked prompt-injection defenses for enterprise AI agents.

Before CEU, the common thread throughout my career has been staying grounded in how businesses actually operate: inside their systems, behind their numbers, and within their regulatory environments. Across nearly two decades in financial operations, tech, and law, I have owned reporting and forecasting on $50M–$200M portfolios, developed custom SQL reporting solutions for enterprise accounting systems, and led document-review teams as a California-admitted attorney.

I am drawn to analytics and data roles in finance and regulated industries where quantitative rigor, business instinct, and modern tooling come together to solve complex operational problems.


Education

Central European University

2025 – 2026 · Vienna

MS in Business Analytics

Graduated with Distinction · GPA 3.81 / 4.0 · Outstanding Capstone Project Award

Coursework: deep learning, time series forecasting, causal inference, geospatial analysis, data engineering, data analytics with AI, data governance / Responsible AI, managing data science teams, designing analytics projects, financial management, fintech.

UC Hastings College of the Law

2005 – 2008 · San Francisco, CA

JD

Admitted to the California Bar, June 2009 (#264084)

Best Oral Advocate and Best Appellate Brief (Honorable Mention), Moot Court; Legal Writing & Research teaching assistant.

Cornell University

Ithaca, NY

BA, Classics

Graduated magna cum laude

Frederick Conger Wood Fellowship · Dean's List · Dickerson Prize for best first-year essay (Dartmouth, before transfer) · President of Telluride House (administered a $150K annual scholarship-house budget).


Projects

RAGLLM EvaluationPython

RegRAG-AML — Grounded Q&A over FATF Anti-Money-Laundering Rules

Deployed RAG + evaluation · Chroma · sentence-transformers · Llama 3.3 70B · LLM-judge faithfulness

A deployed retrieval-augmented question-answering assistant over the FATF Recommendations, the global rulebook for how banks must fight money laundering and terrorist financing (set by the Financial Action Task Force and adopted by more than 200 countries). It answers only from the source text with inline page citations, abstains when a question is out of scope, treats retrieved text as data rather than instructions, and reports measured retrieval and answer-faithfulness metrics against a hand-built gold set. Reuses the prompt-injection and LLM-judge evaluation methodology from my MS capstone.

1.00 retrieval recall@8 · 0.86 answer faithfulness · zero hallucinations on the answerable set Live demo GitHub

AI SecurityNLPPython

Hardening AI Agents Against Prompt Injection — MS Capstone

MS Capstone · CEU · sponsored by Hiflylabs · HuggingFace · LoRA/PEFT

Built and benchmarked input- and output-side prompt-injection defenses for enterprise AI agents: transformer classifiers (DeBERTa-v3, Prompt Guard 2), an agent-plus-LLM-judge pipeline, and LoRA fine-tuning. Delivered a Business Decision Framework mapping deployment scenarios to defense stacks and human-in-the-loop thresholds that minimize expected cost.

89% cross-dataset F1-gap reduction · Outstanding Capstone Award Project site

TableauPythonData Viz

A Burger Is Not a Basket — the Big Mac Index vs Official Prices

Self-initiated · Tableau · Python (pandas) · The Economist / Eurostat / KSH

An interactive Tableau dashboard testing how well The Economist's Big Mac Index tracks official price statistics, built on a Python (pandas) pipeline drawing from The Economist, Eurostat price levels, and Hungarian consumer prices (KSH). The index ranks countries' price levels well but understates the spread between them, overstates short-run inflation, and hides wide variation inside the euro area — a look at where a popular proxy holds up and where it breaks.

r = 0.93 on ranking · 3 official sources Live dashboard GitHub

Time SeriesMachine LearningPython

Forecasting Cybersecurity Vulnerability Disclosures

Time Series Forecasting · CEU · SARIMA · AutoGluon · NVD API

Forecast monthly CVE disclosures from 314,774 NIST NVD records (2005–2025). SARIMA reached 15.17% MAPE on a 36-month holdout, beating an AutoGluon ensemble (21.41%) and the seasonal naive baseline (21.36%). Identified a 2017 reporting-coverage structural break.

15.17% MAPE · 314,774 records GitHub Medium

GeospatialSpatial StatsPython

LA County Wildfire Vulnerability Index

Geospatial Analysis · CEU · H3 · GeoPandas · OSMnx

Built a composite wildfire vulnerability index for LA County on an H3 hex grid (~460 m), combining fire exposure, evacuation capacity, and recovery risk from nine geospatial and census sources. Used local Moran's I to surface three high-vulnerability profiles; back-tested against the Woolsey, Eaton, and Palisades fires (39–72% top-quintile coverage vs a 20% baseline).

9 data sources · local Moran's I GitHub

Causal InferenceEconometricsPython

Does R&D Expenditure Improve Total Factor Productivity?

Data Analysis 4 (Causal Analysis) · CEU · TWFE · IV

Estimated the effect of R&D intensity on total factor productivity across a 94-country panel (2000–2019) using two-way fixed effects, first-difference, and instrumental-variable specifications with clustered standard errors. Found a robust near-zero association and transparently documented two instruments that failed first-stage relevance.

94-country panel · clustered SEs GitHub

LLMRAGPython

Movie Recommendation Chatbot — RAG + multi-agent

AI Engineering / Data Engineering 4 · CEU · ChromaDB · AWS Bedrock · team submission

As primary developer, built the multi-agent orchestration and ChromaDB RAG pipeline: an orchestrator agent profiles the user and routes to a retrieval agent over a vector store of TMDB metadata. Deployed a streaming Chainlit app with multi-turn memory, serving models via AWS Bedrock through LiteLLM.

multi-agent · streaming Chainlit app

NLPAWSPython

EU AI Act Media Sentiment Analysis

Data Science 1 · CEU · AWS Comprehend / Translate / S3 · team of two

As primary developer, built an end-to-end pipeline scraping English, German, and Hungarian news, translating non-English text with AWS Translate, and scoring sentiment with AWS Comprehend using a custom chunk-and-aggregate algorithm. Stored processed records as structured JSON in S3 for longitudinal study.

EN / DE / HU · serverless on AWS GitHub

SQLDuckDBPython

Multi-City Data Integration Pipeline (Chicago + NYC)

Data Science 2 · CEU · DuckDB · bronze / silver / gold · spatial extension

Built a bronze, silver, gold pipeline integrating Chicago business-license (CSV) and NYC building-permit (JSON) data into a clean, validated analytical layer. Caught 247 records with impossible date relationships and imputed them with audit-flag columns for traceability, and used the DuckDB spatial extension for distance-from-city-center analysis, plus business KPIs.

247 records imputed · audit-flagged · KPIs GitHub

HackathonSocial Impact

Vienna Foodprint — CEU Hackathon for Social Impact

Team 7t Think Tank · CEU · March 2026 · Challenge 3 Winner

Designed a three-part toolkit to push Vienna's material footprint toward 7 tons per capita by 2050: a transparency app surfacing food footprints to individuals, procurement reform for the ~100,000 public meals served daily, and a tiered support framework for community food cooperatives.

Challenge 3 winner Live app

Skills

Programming & Querying

PythonSQLGitDocker

Machine Learning & AI

scikit-learnPyTorchTensorFlow / KerasHuggingFaceLoRA / PEFTRAG & multi-agent

Statistics & Econometrics

RegressionCausal inference (TWFE / DiD / IV)A/B testingTime series (SARIMA)

Cloud & Data Engineering

AWS (Bedrock / Translate / Comprehend / S3)dbtSnowflakeDatabricksDuckDBChromaDB

Visualization & Reporting

Power BITableauExcel (VBA, modeling)Salesforce

Regulatory

JDCalifornia BarEU directive analysis

Languages

English (Native)Hungarian (Native)German (A2, in progress)


Experience

Build Group Construction Company Inc.

Apr 2023 – Mar 2025 · Venice, CA

Division Controller

  • Owned financial reporting and billing across a $50M+ portfolio of construction projects, surfacing cost variances to local leadership.
  • Prepared and revised $200M+ annual budget forecasts; ran GL review, reconciliation, and G&A analysis to flag variances.
  • Restructured custom Salesforce reporting and built billing forecasts to improve the data available for decision-making.
  • Managed subcontractor payments (Textura), budgets (Sage 300), WIP revenue recognition, and EAC maintenance with Operations.
  • Audited Project Accountants' work product to enforce billing SOPs, payment release, and waiver compliance.

El Toro Holdings

Jan 2022 – Mar 2023 · Santa Barbara, CA

Project Manager

  • Managed a $2M+ annual-income portfolio of mixed-use commercial, office, and outdoor-storage properties across Central California.
  • Coordinated architects, engineers, land-use consultants, and city and county authorities to drive entitlement and development.
  • Reviewed financials against budget and approved vendor invoices to keep spend within plan.

Urban Developments, LLC

May 2016 – Oct 2021 · Santa Barbara, CA

Operations Manager

  • Oversaw a $500K-NOI commercial retail space with multiple tenants and three food-and-beverage businesses with $1.5M+ combined sales.
  • Analyzed financial data across the businesses and maintained pro forma statements to guide operating decisions.
  • Authored and trained staff on SOPs for inventory management and cash handling across sites.

Contract Attorney — O'Melveny, Manatt, Ropes & Gray, Cappello & Noël

2010 – 2016 · CA

Litigation & Document Review

  • Led 10+ reviewers through privilege review, logging, and redaction on a DOJ second request (Relativity platform).
  • Conducted Hungarian-language second-level and QC review for an internal FCPA investigation (Recommind Axcelerate).
  • Drafted briefs, motions, and memoranda and ran legal research across antitrust, trade secrets, and lender-liability matters.

Covington & Burling LLP

Spring 2009 · Brussels, Belgium

Legal Intern

  • Analyzed EC directives, international treaties, and EU case law on secondary liability for internet copyright infringement.
  • Built presentations on the use of intellectual property in the pharmaceuticals sector.

Yardi Systems, Inc.

2002 – 2005 · Santa Barbara, CA

Computer Programmer / Software Developer

  • Developed accounting and financial reporting software in VB6 and ASP for property-management clients.
  • Wrote and maintained SQL Server and Oracle scripts for enhancements, customizations, and data migrations.
  • Built client reporting packages with SQL, Crystal Reports, and Excel/VBA; trained programmers at the Netherlands office.

Contact

Open to analyst and analytics roles across the EU. EU citizen (Hungary), with full right to work throughout the EU.