Leonardo Aretakis

Hi, I'm Leonardo 👋

Software Engineer. Ruby on Rails and React/Javascript specialist. I love coding, solving problems and helping people.

LA

About

At the end of 2008, I started working with software development during my first year at the university. Since then I have worked in many business fields, from real state pricing software, industrial (metals & mining, oil & gas), education, and finance. Most of the time doing backend and frontend software development, with a few touches of data science and AI here and there.

Nowadays I am proficient in Software architecture, Coding (mostly Ruby on Rails, React, Javascript, and Java), and Leading Tech teams.

My goal is to help people and businesses grow and achieve their potential, using the tools and tech I feel I can help with.

I am planning on become an enterpreneur, so if you know of any projects, or is interested in doing partnerships/networking, reach me out on the contacts section below!

Work Experience

AlphaSights

June 2023 - Current

Senior Software Engineer

Implemented the Bitcoin discreet log contract (DLC) protocol specifications as an open source Typescript SDK. Dockerized all microservices and setup production kubernetes cluster. Architected a data lake using AWS S3 and Athena for historical backtesting of bitcoin trading strategies. Built a mobile app using react native and typescript.

Fullfabric

November 2016 - June 2023

Lead Software Engineer

Implemented a custom Kubernetes controller in Go to automate the deployment of MySQL and ProxySQL custom resources in order to enable 2,000+ internal developers to instantly deploy their app databases to production. Wrote several scripts in Go to automate MySQL database failovers while maintaining master-slave replication topologies and keeping Zookeeper nodes consistent with changes.

KCS iT

June 2015 - November 2016

Senior Software Engineer

Architected and wrote the entire MVP of the GeForce Now Cloud Gaming internal admin and A/B testing dashboard using React, Redux, TypeScript, and Python.

Jogabo

October 2014 - May 2015

Software Engineer

Co-developed a prototype iOS app with another intern in Swift for the new Splunk Phantom security orchestration product (later publicly demoed and launched at .conf annual conference in Las Vegas). Implemented a realtime service for the iOS app in Django (Python) and C++; serialized data using protobufs transmitted over gRPC resulting in an approximate 500% increase in data throughput.

Clubjudge

June 2013 - September 2014

Frontend Software Engineer

Proposed and implemented an internal ruby API for sending/receiving commands to scooters over LTE networks. Developed a fully automated bike firmware update system to handle asynchronous firmware updates of over 100,000+ scooters worldwide, and provide progress reports in real-time using React, Ruby on Rails, PostgreSQL and AWS EC2 saving hundreds of developer hours.

Quantum Finance

January 2012 - June 2013

Software Engineer

Designed and implemented a robust password encryption and browser cookie storage system in Ruby on Rails. Leveraged the Yahoo finance API to develop the dividend.com equity screener

Radix

October 2010 - January 2012

Software Engineer

Designed and implemented a robust password encryption and browser cookie storage system in Ruby on Rails. Leveraged the Yahoo finance API to develop the dividend.com equity screener

Chemtech

January 2009 - October 2010

Junior Software Engineer

Designed and implemented a robust password encryption and browser cookie storage system in Ruby on Rails. Leveraged the Yahoo finance API to develop the dividend.com equity screener

Dantas Property Evaluation Engineering

June 2006 - August 2009

Freelance developer

Designed and implemented a robust password encryption and browser cookie storage system in Ruby on Rails. Leveraged the Yahoo finance API to develop the dividend.com equity screener

Pitang

June 2008 - December 2008

Intern developer

Designed and implemented a robust password encryption and browser cookie storage system in Ruby on Rails. Leveraged the Yahoo finance API to develop the dividend.com equity screener

SUATI

December 2005 - June 2006

Intern developer

Designed and implemented a robust password encryption and browser cookie storage system in Ruby on Rails. Leveraged the Yahoo finance API to develop the dividend.com equity screener

Education

Federal University of Pernambuco

Bachelor Degree - Computer Engineering

PUC Rio de Janeiro

Master Degree - Telecommunication Engineering

Skills

Ruby on Rails

React

Javascript

Node.js

Next.js

Typescript

Postgres

MongoDB

Docker

Kubernetes

Java

AWS

Elixir

Phython

Contact

Get in Touch

Want to chat? Just shoot me a dm with a direct question on twitter or schedule some time with me on calendly. and I'll respond whenever I can. I will ignore all soliciting.