# Stefano Borzì

> Personal portfolio of Stefano Borzì, a freelance full-stack software engineer based in the
> Netherlands and PhD candidate in Data Science at the University of Catania. The site covers his
> work experience, skills, software projects, open-source communities, teaching, academic
> publications, and conference talks. He works primarily with TypeScript, Angular, React, Node.js,
> NestJS, Python, and Laravel, and is passionate about open source and Linux.

## About
- [About](https://helias.github.io/#about): Bio and contact. Software engineer who started programming at 12; founder of two open-source communities (AzerothCore, UNICT-DEVS).
- [Full Resume (PDF)](https://helias.github.io/StefanoBorzi-CV.pdf): Complete academic and industry CV.
- [Industry Resume (PDF)](https://helias.github.io/StefanoBorzi-CV-Industry.pdf): Industry-focused CV.
- Contact: stefanoborzi32@gmail.com | [GitHub @Helias](https://github.com/Helias) | [LinkedIn](https://linkedin.com/in/stefanoborzi) | [Telegram @Helias](https://t.me/Helias) | [Google Scholar](https://scholar.google.com/citations?user=80n8dycAAAAJ)

## Skills & Technologies
- Frontend: Angular (v18+), React.js, Next.js, TypeScript, JavaScript, RxJS, NgRx, Redux, Web Components, Three.js, Electron, Micro Front-ends
- Backend & APIs: Node.js, NestJS, Express.js, PHP (Laravel), Python (FastAPI, Flask), Java (Spring Boot), .NET, REST, SOAP, WebSockets, Socket.io, Microservices, C, C++, R, PyTorch, SQL (MySQL, SQLite), Bash, Lua
- Testing & QA: Cypress, Playwright, Jest, Karma, Jasmine, Pytest, Selenium, A/B Testing (Optimizely), Accessibility (WCAG)
- Infrastructure & DevOps: Docker, CI/CD (GitHub Actions, Jenkins), Azure, Linux (OpenWRT, DDWRT), Firebase, Supabase, Nginx, Apache, Radius
- Tools & UI/UX: Git (GitHub, GitLab, Bitbucket), Nx, Webpack, Vite, Jira, Figma, Adobe Analytics, SASS, TailwindCSS, Bootstrap, Material Design, WordPress
- Methodologies: Scrum, SAFe-Agile, Kanban, Technical Writing (LaTeX)

## Work Experience
- [Projects](https://helias.github.io/#projects): Full-stack developer with a strong focus on front-end (Angular). Selected roles:
  - Fullstack Developer (freelance), Royal BAM Group, May 2025 - Present: digitalizing construction processes (TypeScript, Angular, NestJS, NgRx, .NET, Nx, Playwright)
  - Team Lead, FedEx, Jan 2023 - May 2025: led frontend development, releases, and hiring for an international web app
  - Senior Programmer Analyst, FedEx, Jan 2021 - Dec 2022: 33% app size reduction, Angular upgrades, performance optimization
  - Software Engineer, Infront Finance (ex VWD group), Jan 2020 - Dec 2020: FinTech platform, removed jQuery dependency
  - Software Developer (freelance), Fiverr, Aug 2018 - Jan 2020: web scrapers, Telegram bots, automation (Python, Node.js)

## Open Source
- [Opensource](https://helias.github.io/#opensource): Founder of two open-source communities.
  - [AzerothCore](https://github.com/azerothcore): Open-source MMORPG game server framework based on World of Warcraft (patch 3.3.5a)
  - [UNICT-DEVS](https://github.com/unict-dmi): Community of University of Catania DMI students building Telegram bots, web apps, and automation tools for university services

## Teaching
- [Teachings](https://helias.github.io/#teachings): "Quality Development" course at the University of Catania (academic years 2021/2022 through 2025/2026). Covers UNIX shell, Git/GitHub workflows, open-source engagement, Python, unit testing, code quality (SOLID), and CI/CD.
  - [Course GitHub Organization](https://github.com/UNICT-Quality-Development/) | [Slides](https://slides.com/stefanoborzi/code) | [Students Projects](https://unict-quality-development.github.io/git-catalogue/) | [Telegram](https://t.me/unict_qd)

## Publications
- [Publications](https://helias.github.io/#publications): Research focused on synthetic/deepfake audio detection and audio processing.
  - [Breaking the Silence: Detecting AI-Converted Voices in the Quietest Moments](https://link.springer.com/chapter/10.1007/978-3-031-88223-4_14): Deepfake audio detection using handcrafted features and Random Forest on silent audio segments
  - [Is synthetic voice detection research going into the right direction?](https://openaccess.thecvf.com/content/CVPR2022W/WMF/papers/Borzi_Is_Synthetic_Voice_Detection_Research_Going_Into_the_Right_Direction_CVPRW_2022_paper.pdf): CVPR 2022 workshop paper critiquing voice spoofing datasets
  - [Spafe: Simplified Python Audio Features Extraction](https://zenodo.org/records/11396240): Lightweight Python audio feature extraction library
  - [NETME: on-the-fly knowledge network construction from biomedical literature](https://link.springer.com/article/10.1007/s41109-021-00435-x): System for extracting biological knowledge networks from PubMed texts
  - [SMART: The String Matching Algorithms Research Tool](https://www.stringology.org/papers/PSC2016.pdf#page=109): Tool and survey for testing exact string matching algorithms

## Events & Talks
- [Events](https://helias.github.io/#events): Conference and meetup talks (mostly in Italian). Topics include Python multithreading and extensibility (PythonCatania), GitHub & CI/CD for code security, audio processing with ffmpeg, synthetic voice detection (MediaForensics 2022), history of operating systems, and open data manipulation (OpenDataSicilia 2022).

## Education
- University of Catania, PhD in Data Science (2021-2026)
- University of Catania, MSc in Computer Science / Data Science (2017-2019)
- University of Catania, BSc in Computer Science (2014-2017)

## Languages
- Italian (native), English (fluent), Spanish (basics), Dutch (basics)