John Deliyiannis - Writing

I recently helped a small team tidy up the ops around an early flat-sharing marketplace in Greece.

Some years ago I wrote a small script for checking how DCA would look on historical data.

Another Rails World is over and I am heading home with the rare kind of motivation that actually makes me want to simplify things.

Lately, due to the rapid advancements in AI, I find myself reflecting on two ideas.

Deploying a Rails application is often a routine task, but when you throw Sidekiq into the mix, there are some nuances to consider.

During the early stages of a chess game, specifically the openings, I repeatedly found myself caught off-guard, ensnared in unforeseen traps.

The Allure of Chess: A Lifelong Passion Since my teenage years, chess has held a special place in my heart.

During a recent project, I encountered an intriguing aspect of where.not and of negative conditions in general, that's definitely worth highlighting.

I'd like to introduce you to AstroMobile, a quiz game I've been working on.

In Greece, July and August often usher in a more relaxed pace, as many take vacations and find time for leisure.

Recently, I embarked on a new fitness journey, determined to track my progress using data and analytics.

Recently, I've been experimenting with the two available versions of Chat-GPT.

Predictions and results On 2022, I wrote a blog post regarding my predictions for 2022.

Overview OpenAI has developed a highly successful chatbot AI that is able to handle a wide range of situations.

Recently we encountered two strange bugs.

I had a simple need to combine two images together.

Reddit is my favorite social media platform, if we can consider it like one.

We have two mobile apps for a service we are creating.

In the past we had an app on heroku and we were using sidekiq and redis.

I was talking with a client some years ago and he wanted to create a web application.