Hello!

You have reached my personal webpage. It was hastily hand-coded in 2017 and further vibe-coded in 2026, though I assure you this prose is all painstakingly handwritten.

My place of employment is OpenAI, where I design LLMs, train them on massive supercomputers, and help get them deployed in case they are useful to you.

I hail from Greece and now live with my partner in the Mission District of San Francisco. In my spare time, I go on long walks with friends, cycle, and lift weights – but all of that is really only cross-training for my Brazilian Jiu-Jitsu competitions.

Preciously, I worked on high-frequency trading, on high-speed autonomous racecars, and on high-performance machine learning.

Take a looksie and have a nice day!

GitHub

Pinned repositories from @nistath

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Portfolio

Selected projects and work — click any row to expand

Nick’s Guide to

Athens & Beyond

Getting There & Around

Getting In

Fly into Athens International Airport (ATH). Taxi (~€40 flat rate, ~40 min), metro Line 3 to Syntagma Square (~40 min), or private transfer. If you’re heading straight to an island, many have direct international flights — worth checking before defaulting to ATH.

🚕 Taxi ~€40 🚇 Metro ~40 min 📱 Uber / FreeNow

Getting Around

Athens is very walkable in the center. FreeNow has the best local driver availability. The metro is clean, cheap, and efficient. Google Maps works great for transit.

Where to Stay

We recommend Plaka (charming village feel, narrow streets) and Thiseio (laid-back, beautiful Acropolis views from the promenade). Both are centrally located.

Things to Do in Athens

Nick’s Restaurants & Bars

Beyond Athens

Island Escapes

Each island has its own personality.

Mykonos windmills

Mykonos

Glamorous, loud, and unapologetically fun

Oia blue domes at sunset, Santorini

Santorini

Dramatic cliffs, legendary sunsets, real depth

Chania Venetian harbor, Crete

Crete

The largest island — feels like its own country

Portara, Temple of Apollo, Naxos

Paros & Naxos

Close neighbors, easy to visit together

Ferries between them take 30–45 minutes. Either is great on its own.

Naxos

The most well-rounded island — beaches, history, mountain villages, great food, youthful energy.

Guided bus tour
Hit the island’s major sights with a local guide.
Catamaran cruise
Swimming in secluded coves with lunch on board.
Portara (Temple of Apollo)
Iconic marble gateway. Beautiful at sunset.

Paros & Antiparos

Paros has charming Parikia and pretty Naoussa. Antiparos has a great secluded cliff beach hike. Ask around when you arrive.

Other Islands Worth Knowing

Sarakiniko Beach, Milos

Milos

Volcanic coastline, sea caves, colorful beaches. Sarakiniko’s white lunar landscape is iconic. Quieter, rugged — great for couples.

Rhodes Old Town

Rhodes

Medieval Old Town is a UNESCO site — a walled city for hours. Beaches, ancient Lindos, different vibe from the Cyclades.

Corfu Old Town

Corfu

Northwest, closer to Italy. Venetian influence, lush green hills, elegant architecture around Corfu Old Town. Longer journey but completely different.