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AI & Data Solutions Engineer · Warsaw, Poland

Porfyrios Giannakouris

AI & Data Solutions Engineer with 7+ years of experience building automated data pipelines, AI systems, and web apps. Currently working as a Senior Data Engineer at Asana.

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About

Combining deep backend and data engineering experience with hands-on AI development, across cloud platforms, pipeline architecture and intelligent web applications. Tech stack: Python, SQL, cloud data platforms (Databricks, BigQuery, Airflow), and the Django/FastAPI ecosystem.

Experience

Senior Data Engineer · Asana

Warsaw, Poland
Sep 2025 – present
  • Optimizing core data pipelines used by Data Science and Analytics.
  • Migrating data infrastructure from Snowflake to Databricks.
  • Automating recurring data workflows for cross-functional teams.

Senior Data Engineer · emendSys

Athens, Greece
Apr 2024 – Aug 2025
  • Client-serving contractor for Ernst & Young (EY) Netherlands.
  • Maintained an ETL pipeline on Azure Data Factory, Azure Functions, and Databricks (PySpark).
  • Built the backend of a desktop application using Python, SQL, and DuckDB.
  • Designed parallel pipelines for handling large datasets efficiently.

Data Scientist / Data Engineer · XPLAIN Ltd

Athens, Greece
Jan 2018 – Apr 2024
  • Researched and shipped state-of-the-art NLP techniques and ML models.
  • Built and maintained scrapers across blogs, forums, social media, and review sites.
  • Designed automated ETL pipelines in Python and SQL.
  • Developed Django, FastAPI, and Docker web apps for analytics and visualization.
  • Deployed ML models behind Flask/FastAPI APIs containerized with Docker.
  • Designed a GCP-based ETL on BigQuery, automating Looker-ready data delivery.

Education

BSc, Digital Systems

University of Piraeus
Piraeus, Greece

Coursework: Mathematical Analysis, Linear Algebra, Software Engineering, OOP, Data Structures, Database Systems, AI, UNIX, Data Warehousing & Mining. Thesis: Textual Emotion Classification with Python & Scikit-Learn.

MSc, Quantum Computing and Quantum Technologies

Democritus University of Thrace
Remote · Oct 2023 – present

Coursework: Quantum computing, qubit devices, solid-state quantum devices, quantum communications, quantum algorithms, quantum machine learning. Thesis: Quantum Computing and Quantum Machine Learning in the Life Sciences.

Projects

baionic.co

Personal portfolio site (this one) — Django + Bootstrap 5, dockerized, hosted on Digital Ocean App Platform.

Django Bootstrap 5 Docker Digital Ocean PostHog
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pgnlp

Python package of NLP utilities for cleaning text — strips or replaces numbers, hashtags, URLs, punctuation, dates, emojis and more.

Python NLP
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crudlib

Lightweight CRUD library on top of SQLAlchemy ORM. Drop-in for projects that need quick database management.

Python SQLAlchemy
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Skills

Programming

Python SQL HTML/CSS JavaScript

Databases

PostgreSQL MongoDB DuckDB BigQuery Redis

Web & Backend

FastAPI Django Flask Bootstrap

Data Engineering

Databricks PySpark Apache Airflow Fivetran

Data Analysis

Pandas NumPy Matplotlib Looker Studio

AI & ML

LLM APIs (Anthropic, OpenAI) Scikit-Learn Hugging Face Transformers LangChain

DevOps & Tooling

Git Docker UNIX Selenium Scrapy n8n PostHog

Cloud & Infrastructure

AWS Azure Digital Ocean Supabase

AI-Native Developer Tools

Cursor Claude Code GitHub Copilot

Languages

Greek · Native
English · Highly proficient
Chinese · HSK2

Get in touch

Have a project in mind, a role you'd like to discuss, or just want to say hi? Send me a message.