Mateus Leonardi

Project for distance education, in which entrepreneurs can sell content online whether for small or large businesses. Serving B2B and B2C.

With the pandemic, there was a huge increase in the demand for the platform, which brought several challenges.

Hired to lead the team technically, together with the team I started a work to implement new features/integrations and fix the main issues/debits, making use of the Pareto Principle. Always coding together with the team (alone and pair… Mostrar más

Project for distance education, in which entrepreneurs can sell content online whether for small or large businesses. Serving B2B and B2C.

With the pandemic, there was a huge increase in the demand for the platform, which brought several challenges.

Hired to lead the team technically, together with the team I started a work to implement new features/integrations and fix the main issues/debits, making use of the Pareto Principle. Always coding together with the team (alone and pair programming).

In a few months we were able to optimize performance and reduce the main causes of problems for customers, thereby also improving performance to the point of drastically reducing the size of the infrastructure needed to maintain the project. All KPI's show continuous improvement, with each delivery of the team this improvement is noticeable.

We are managing to change the image of the team before the company's customers, CS, and C-Level. As a result, there is also a constant and significant increase in team engagement, with more motivation and focus on solutions that bring real value.

We use in the project: Ruby on Rails, Resque, Sidekiq, Docker, kubernetes, G, AWS, MongoDB, MySQL, Elasticsearch, Redis, Postgresql. Mostrar menos

ConectCar is RFID Automatic toll road control system available in Brazil.

I've implemented the core business rule for the system, console and customer service area.

Project designed to generate the MRR from the company using software.
This is a very important project to the company, I worked in the solution design and achieved the following requisites: eliminate repetitive crafts, eliminate rework for errors in applying rules, making the rules clear and “public”, make it possible to audit the verification and automate items of that audit, calculate MTD and MTD vs Previous Month, enable the Controllership to identify points for improvement and… Mostrar más

Project designed to generate the MRR from the company using software.
This is a very important project to the company, I worked in the solution design and achieved the following requisites: eliminate repetitive crafts, eliminate rework for errors in applying rules, making the rules clear and “public”, make it possible to audit the verification and automate items of that audit, calculate MTD and MTD vs Previous Month, enable the Controllership to identify points for improvement and corrections.
We implemented automated tests based on "source of truth", to ensure the rules are followed independent how the input happens.
We got the job done using Hadoop/Hive, NiFi, Airflow, Python, Pandas and Google App. Mostrar menos

Project to migrate our cluster Hadoop from one cloud to another one.
We migrated all the data (some TBs) and rebuild all the machines necessary, making the cluster bigger (with more machines and better responsabilities division).
We cut costs of our cluster and made it bigger.
This made possible increase performance and mechanisms to make it more powerful.

Project to solve a performance problem to extract the KPIs. The KPIs were extract from relational database but it was a long and expensive process every single day. It was becoming unfeasible to extract the KPIs from there, it was recurring to not be able to extract the data and this caused many business problems.
For solve that, I worked to design a process and solution to extract in a incremental way the data and then extract the KPIs.
The tables were huge, so it was necessary to go… Mostrar más

Project to solve a performance problem to extract the KPIs. The KPIs were extract from relational database but it was a long and expensive process every single day. It was becoming unfeasible to extract the KPIs from there, it was recurring to not be able to extract the data and this caused many business problems.
For solve that, I worked to design a process and solution to extract in a incremental way the data and then extract the KPIs.
The tables were huge, so it was necessary to go deep to have a solution to solve this.
We used Hadoop/Hive, Docker, Spinnaker, Python, Buckets, Nifi and Airflow to get the job done. The solution was designed to be able to recover by itself, if necessary.
We achieved the results reducing time to extract the KPIs, making them available in the agreed SLA, reducing costs to extract and making the data available for others routines/analysis and data science study. Mostrar menos

Project to handle/manage the "s" program. Get data updates, clean, process and sync back using API. We used Hadoop/Hive and Python.

The Ecommerce is the main sales channel of Henry Schein. We implemented fixes, performance improvements (code and database) and evolutions (like new integrations and redesign).
We worked in a fully redesign of the ECommerce, this involved review everything (UX, UI, Architecture, backend process, etc).
This improvements enabled the Henry Schein implements innovations like product suggestions and increase the sells, making the experience too much better.
The stack was: C# ASP .NET… Mostrar más

The Ecommerce is the main sales channel of Henry Schein. We implemented fixes, performance improvements (code and database) and evolutions (like new integrations and redesign).
We worked in a fully redesign of the ECommerce, this involved review everything (UX, UI, Architecture, backend process, etc).
This improvements enabled the Henry Schein implements innovations like product suggestions and increase the sells, making the experience too much better.
The stack was: C# ASP .NET, SQL Server, MSMQ, TFS, Windows Services Mostrar menos

It's a software to create and manage the Henry Schein redemptions.

I've worked as tech leader, making the software architecture (backend and frontend), implementing and guiding about best practices, technologies and tools to use and implementing the core business rules.

I've worked as technical leader in the Motomaker.
Leading the team technically, finding solutions and best practices to get the job done with high quality.

We built a software that enabled Motorola sells any product in any country with the same code base, changing only the input. All the products were customized by the client and then added to the cart.

This reduced the time necessary to announce and sell products. Reducing costs due the high performance that demanded just few… Mostrar más

I've worked as technical leader in the Motomaker.
Leading the team technically, finding solutions and best practices to get the job done with high quality.

We built a software that enabled Motorola sells any product in any country with the same code base, changing only the input. All the products were customized by the client and then added to the cart.

This reduced the time necessary to announce and sell products. Reducing costs due the high performance that demanded just few containers.

The stack was: Ruby On Rails, Java, Cassandra, Jenkins, Angular 1.x, postgresql.

URL: http://www.motorola.com/us/moto-maker Mostrar menos

GOAL handles SLA and metrics for IT and development contracts.

I've implemented core business rules and metric reports.

It's a retail financing system.

I've implemented the core business rules and console.

SGL is a software to configure and manage the logistics to deliver the "Ticket" pre paid cards.

I've implemented the core business rules, console and business reports.

Ticket Transport manages and handles customer transport fuel pre paid cards information.

I've implemented the core business rules and console.

SPF is a system to manage, control, generate reports and metrics of enterprise taxes for Brazilian state government.

I've worked as software developer re-implementing the core in ASP .NET MVC and SQL Server Reporting Services.

Senac Mira is a education software system for student enrollment process and several services related with the educational area.

I've worked as software developer in the console and reports.

"Domus Web" is a software to manage government public policies for subsidized housing.

I've worked as software developer in the console.

I've worked as software developer in the console and reports.

"Netuno Web" is a billing system used for several water service companies such as SANESUL, SAERB and SEMASA.

I've worked as software developer in the billing invoice generation, console and report generation.