David Bertoldi

I’m a passionate Computer Scientist from Milan, Italy and creator of Password4j.

I started working as Software Engineer while studying for my Master Degree, focusing on Software Architecture, Deep Learning, Cloud Computing and Parallel Computing .

I have 6+ years of experience as Technical Leader on large Ecommerce projects using SAP Hybris/Commerce Cloud and Salesforce Commerce Cloud technologies and 10+ years of experience on developing with Java, the Spring Framework, Node.js and Python. In the free time I write technical articles for Towards Data Science.

Currently I'm working at Salesforce as Technical Architect for the EMEA team, contributing to cutting-edge projects for large-scale businesses.

Here you can find my resume.

Unbiased RNG from an unbalanced one

How to get an unbiased RNG from an unbalanced one

A randomness extractor in Python applicable from skewed coins to Shakespeare
Storing a movie into pi

Storing a movie into π

Is it worth to use π as data archive?
Pseudorandom Number Generator

Building a Pseudorandom Number Generator

In less of 50 lines of Python code
Quine program

How to write your first Quine program

A quick guide to self replicating programs in Python
Things you are doing wrong in Java

10 things you are doing wrong in Java

The most common mistakes Java developers make
Password4j

Password4j

A user-friendly cryptographic library that supports Argon2, Bcrypt, Scrypt, PBKDF2 and various cryptographic hash functions.