Alan Sammarone, Developer in Leipzig, Saxony, Germany
Alan is available for hire
Hire Alan

Alan Sammarone

Verified Expert  in Engineering

Machine Learning Developer

Leipzig, Saxony, Germany
Toptal Member Since
March 28, 2017

Alan has over a decade of programming experience and about 7 years of professional experience—developing various APIs and high performance systems. He's also particularly interested in math and theoretical computer science. He has worked remotely for more than 2 years and is able to integrate quickly into any team and setup.


Simbiose Ventures
Amazon Web Services (AWS), Amazon, C, Aerospike, MySQL, Cassandra...
Positivo Informática
MySQL, Python, JavaScript
Aymará Editora
MySQL, Yii, JavaScript, PHP




Preferred Environment

Git, Sublime Text, MacOS

The most amazing...

...thing I built was a REST API providing access to deep learning algorithms used to classify web pages based on their content.

Work Experience

Senior Developer

2014 - 2016
Simbiose Ventures
  • Created a machine-learning pipeline as well as a REST API to access it—it was able to categorize websites according to its contents.
  • Optimized various parts of the company's system—generating a 5~10 fold improvement in performance and decrease in costs.
  • Migrated the company's storage architecture to a hybrid of Amazon Glacier and Amazon S3, decreasing storage costs by 30%.
  • Idealized and oversaw the creation of a system able to extract product prices for any given URL representing a product listing.
Technologies: Amazon Web Services (AWS), Amazon, C, Aerospike, MySQL, Cassandra, Elasticsearch, JavaScript, Shell, Python

Software Developer

2012 - 2014
Positivo Informática
  • Coded highly optimized, browser-based mathematical and physical simulations aimed at helping teaching high school children visualize concepts.
  • Wrote an automation tool used to update and deploy thousands of applications efficiently.
  • Optimized many legacy JavaScript projects to make them run on low-end tablets.
Technologies: MySQL, Python, JavaScript

Junior Developer

2010 - 2012
Aymará Editora
  • Coded and supported a social network aimed at children.
  • Wrote JavaScript animations and games for tablets.
  • Created a framework to sync information from different databases.
Technologies: MySQL, Yii, JavaScript, PHP

Junior Developer

2009 - 2010
Totalize Internet Studio
  • Created websites for to small and medium-sized business using a proprietary framework.
Technologies: MySQL, JavaScript, PHP

An implementation from scratch of a feed-forward neural network with back-propagation and a stochastic gradient descent for learning. It needs the MNIST digits dataset to run, which can be found in my GitHub link above.


Python, JavaScript, PHP, C, Falcon


jQuery, NumPy, PiLLoW, SciPy


Flask, Yii, Django


MySQL, Amazon S3 (AWS S3), Cassandra, Elasticsearch, Aerospike, MNIST


Sublime Text, Shell, Git, Mathematica


Distributed Computing, Parallel Computing


MacOS, Amazon, Linux, Amazon Web Services (AWS)


Machine Learning, Tornado, Mathematical Analysis, Apache Cassandra, Neural Networks

2016 - 2019

Bachelor's Degree in Physics

Universität Leipzig - Leipzig, Germany

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring