Experience

SaltPay

• United Kingdom
• Financial Services
• 1 - 100 Employee

• Head of Technology @ Customer Acquisition

  • Aug 2021 - Present

• Tech Lead

  • Apr 2021 - Aug 2021

• Senior Backend Developer

  • May 2020 - Mar 2021

  Elixir



Árvore de Livros

• Brazil
• Libraries

• Co-founder / Partner / Former CTO

  • Sep 2013 - Present

  I co-founded Árvore de Livros with João Leal, and I've also worked as the CTO and was the most active programmer for the first six years, where the company showed an exponential success year after year.As a team, we built a successful company, and on my own, I did:- The fastest js-based web reader on the market- A light and web-based Book format and a converter from both Epub and PDF- A stable environment using Docker, Kubernetes, and AWS- A robust search pipeline with complex filters using Elasticsearch- Integrations with multiple payment system providers- A real-time chat per page using web sockets and Phoenix with very low latency (< 1ms)- A fast and reusable API using GraphQL- Made many reports panels using Apache Spark, D3 with some complex queries- A Metabase environment that allowed the team to create some simple questions and visualizations- Robust dashboards to monitor the server and indicators using Grafana- A fast server with less than 10 ms response time on most of the pages- A pipeline for book upload from multiple sources, including FTP, S3, Excel (for meta-data), form-based, and onix.- A pipeline to predict sales by combining our CRM with multiple sources. Using both Gradient Boost and Deep Learning. High ROC AUC score.- A reverse proxy with numerous layers (endpoints) to patch the site in real-time and allow intranet access from a big client that only have a single data center connected to the internet.- Recommendation system including all their steps (from data exportation to the final exhibition).



Hydratight

• United Kingdom
• Oil and Gas
• 700 & Above Employee

• Trainee

  • Feb 2011 - Feb 2013

  I acted in different areas of the company, helping and learning from the operators on the ground to the Brazilian president. I've also proud of some web apps that I've done to handle stock management and a custom CRM.I made both using Rails, Postgresql, and Elasticsearch.



Delage

• Law Practice

• Internship

  • Feb 2010 - Feb 2011

  - Made a system to optimize warehouse efficiency using genetic algorithms and A*. That mapped the routes, equipment, and delays to smart place products to avoid traffic and long-distance travel for high demanding items.- Created a prototype of a 3D warehouse management using Unity3, C# MVC WebServer API, and SQLServer. That project allows managers better to visualize the warehouse.- Created a bot to interact in realtime with three government bidding systems, extract the information using scrappers, and provide full-text search and intelligence over that data.