Paulo Jerônimo’s CV

 Sep 2023 to Present

Working for GLS Group as a Java Backend Developer through a consultancy (HN Services), I have been involved in modernizing several projects developed by Team Pasteis (more than 20). This evolution involves updating the JDK versions and libraries used by the projects. With these updates, we have drastically reduced the security vulnerabilities identified by Snyk. In addition, I have also worked on integrating the projects with Keycloak, which is now responsible for the authentication and authorization processes.

My daily work at GLS involves the use of agile methodologies, as well as tools such as Jenkins, SonarQube, and IntelliJ. Projects are built via Gradle and executed on Amazon Web Services (AWS). Basically, all projects use Spring techs.

 October 2019 to Present

Finisher Tech is my technology startup that unites two of my passions: the pursuit of health and wellness through everyday sports and my relentless desire to produce solutions that use cutting-edge technologies like Artificial Intelligence, Blockchain and Data Visualization to make people increasingly motivated and disciplined in their health plans and wellness.

I am developing decentralized applications (DApps) related to Move-To-Earn in my free time and slow steps because I think people will be adopting the technologies related to my projects in the long term. So, at the time, I’m using the knowledge related to the products I’m creating as an educational product to mentor the market on using such technologies.

At the same time I work for my startup in my free time, I work for other companies simultaneously in the same tech area or others.

 May 2022 to July 2022

I acted as a backend developer using JavaScript and TypeScript focusing on security issues (as seen this video).

In parallel, I worked in the innovation area to bring a culture of developing decentralized applications (DApps) to the company using Blockchains such as Ethereum, Polygon, and NEAR. This educational process was initiated before I rejoined ília as an employee by offering them mentoring on Web3 technologies through my own company.

Other tecnnologies used working for this job during the period: Amazon Web Services (AWS), Rust.

 April 2021 to August 2021

Worked using Java and Java EE technologies in Open Banking solutions.

 February 2021 to July 2021

Working as a freelancer software developer using AWS technologies (like Lambda and Kinesis) and programming in Bash, Python, JavaScript and Java.

 February 2021 to March 2021

Worked at Presidência da República focused on develop a project using Spring Boot, Spring Cloud Stream and Kafka.

 July 2020 to January 2021

Worked for Caixa Seguradora, one of the customers of the employer ília, focused on creating RH-SSO (Keycloak) software extensions. Basically, the things that I created to this project was written in Bash and Java and the last extension that I created built an integration between Keycloak and an Interactive Voice Response (IVR) system.

Some non related projects that I created in a open source way only to study or explore more about some Keycloak features that I’m using in my customizations, are exposed in these links:

 February 2018 to March 2018
Working as a Software Developer in internal projects at Integer.

 April 2018 to February 2019
Through this company and its partner (Novabase), I am working as a software developer for Thales Group developing solutions at Thales Ground Transportation System.

 September 2017 to January 2018

Through my company, I acted as a Java Instructor at Oracle.

I ministered official Oracle Java courses.

You can see my complete list of delivered training in the topic "Delivered Courses".

 Things that I used in my works:

 Some pieces of my works, available on my GitHub account: [java-fundamentals-examples].

 October 2016 to January 2018

Through my company, I acted as a Senior Consultant at Red Hat.

 Things that I’m using in my works:

 Some pieces of my works, available on my GitHub account: [jboss-scripts], [jboss-domain-mode-scripts], [poc-vraptor-jboss-cluster], [struts2-crud-example], [docker-rhel-nexus], [docker-oracle-xe].

 October 2015 to September 2016

I led a small team (some few developers and DevOps guys). We designed a Computer Based Test (CBT) solution (programmed in Node.js to run on Docker containers).

 February 2015 to September 2015

Tecnisys is a Red Hat's partner. When I was working there, also, an IBM partner.

I worked for this employer offering consulting and training services on Red Hat’s Linux, middleware and cloud products, including the following servers / solutions: OpenStack, OpenShift, JBoss EAP, Wildfly, JBoss ESB, JBoss Fuse, JBoss Data Virtualization, JBoss AMQ, JBoss Developer Studio, JBoss BPM Suite, JBoss BRMS.

I also did some works related to IBM products: IBM Worklight.

To their customers, I recommended, specified and developed scalable architectures using these products.

I helped the sales team, acting as a pre-salesman (technical) when necessary.

Some tasks completed on customers:

 September 2014 to January 2018

Through my company I worked as a Red Hat Certified Instructor (RHCI). I ministered official Red Hat courses. My teaching focus was in Red Hat JBoss Enterprise Application Platform (EAP).

You can see my complete list of delivered training in the topic "Delivered Courses".

 September 2014 to March 2015

I was hired by UNDP as a Java EE consultant to build the architecture for SISLEGIS application and guide the development team to use Java EE best practices.

The SISLEGIS is an open-source software that aims to meet the needs of the Secretariat of Legislative Affairs of the Ministry of Justice.

I was also responsible for acting on various issues, from the development of the application until its publication in the production environment.

Some available SISLEGIS components in its GitHub account:

The SISLEGIS application has, also, a website that documents its characteristics. However, it was not updated after I left the project, and because of that, the best documentation is actually your code.

 Things that I was using on this project:

 Some pieces of my works, available on my GitHub account: [sislegis-app], [sislegis-app-frontend], [sislegis-ambiente], [sislegis-ambiente-ubuntu], [sislegis-ambiente-fedora], [sislegis-ambiente-centos].

 June 2013 to June 2014

Acting for clients of the company, developing activities related to supporting for Linux servers (CentOS, RHEL, Debian) and middleware running Apache HTTP, Ngnix, Apache Tomcat or JBoss EAP. Supporting for applications written in Python, PHP, and Java. My main tasks were:

I did these tasks in this periods/clients:

 Things that I used on these works:

 January 2013 to June 2013

Participation in project development (Java EE) for the financial area of Capes, assisting in the implementation of a methodology of tests for applications (Test Drive Development (TDD)/ Behavior Driven Development (BDD)).

 August 2011 to June 2012

I worked in the IBM WebSphere team as a consultant/expert in WebSphere Application Server (WAS) and IBM Business Monitor (used to do Business Activity Monitoring (BAM)). Main activities performed:

 December 2010 to April 2011

I worked in consulting and support services for JBoss, Oracle and Apache application servers, for CNPq client ( Brasília). Main responsabilities:

 January 2008 to April 2009

I worked in supporting middleware’s infrastructure that makes up the Selic application servers, at Central Bank ( Rio de Janeiro)). I did the installation, configuration, and integration of many application servers (JBoss EAP). I also performed maintenance and monitoring of multiple instances (+ 30) in various environments (from development to production). I did the refactoring of deployments automation solution for Java EE applications that, in past, was using Bash scripts and Ant. This refactoring was made using Maven. I made the continuous integration solution using CruiseControl and Hudson.

 July 2002 to October 2004

I did software architecture and development in Java, C, and C++ for many telecommunications applications. Some details:

 September 1999 to January 2018

Paulo Jerônimo Treinamentos Eireli-ME was the name of my own micro company. It was founded in September 1999 with the name ALP Engenharia de Software Ltda. For many years my company lived only attending some specify customers, without a trademark. Therefore, in April 2010, I decided to give it one: Lado Servidor. Using this name, I developed many works involving the creation of custom training to many customers. Also, I gave solutions and did many services associated with Java application servers. Another work was the application development (especially in Java EE, on multiple platforms).

I kept the Lado Servidor’s blog. This blog is available, now, for historical reasons. It does not suffer updates anymore. All the posts created for this blog was written in Brazilian Portuguese (pt-br). Those posts contain various solutions and tutorials for some technologies, especially those addressing the use of Java EE middleware (JBoss EAP, GlassFish, IBM WebSphere, etc). Some friends (including Marcelo Ancelmo and Bruno Borges), also with extensive knowledge in the Java EE world, contributed in adding some posts to Lado Servidor blog.

In April 2014, I decided to not update Lado Servidor blog anymore. That decision was done to give more emphasis in my own name. Therefore, I asked my accountant to change the name to the current that I’m using.

Through my company, I played the following roles:

Using the trademark Lado Servidor:

Before the name Lado Servidor:

  Universidade de Brasília (UnB), 2001 → 2002
Specialist degree. Course: Distributed Systems and Object Orientation.
  Universidade Católica de Goiás (UCG), 1994 → 1998
Bachelor’s degree. Course: Computer Science.

Portuguese: Native language.
English: Fluent → Level CEFR B2 at British Council EnglishScore Core Skills test. See some of My English Videos.

Working as an instructor, I delivered official courses (Oracle/ Red Hat, for example) and also courses that I wrote on my company (or with partners) to attend customer demands.

The complete list, shown below, gives you an idea of my effort to always stay tuned with the current technologies in its epoch. This list can be downloaded in CSV format and totals more than 3,400 hours training people in technology-related subjects.

Red Hat Certified System Administrator (RHCSA). Jul 18, 2014 - Nov 01, 2018. (See certificate)
Red Hat Certified JBoss Administrator (RHCJA). Jul 17, 2014 - Nov 01, 2018. (See certificate)
Sun Certified Business Component Developer for the Java 2 Platform 1.3, Enterprise Edition (SCBCD). Feb 2007.
Sun Certified Programmer for the Java 2 Platform, Standartd Edition 5.0 (SCJP). Feb 2007.
Sun Certified Web Component Developer for the Java 2 Platform 1.3 (SCWCD). Jun 2003
Sun Certified Programmer for the Java 2 Platform 1.2 (SCJP). May 2002.

All my presentations, until this moment, was done in Brazil. So, here I’m keeping the original title (in Brazilian Portuguese) but highlighting (in bold) the subject(s). Here is the list: