Hi! This is Jaime Dantas.

About Me

My name is Jaime Dantas, and I am a Computer Engineer. Currently, I work as a Software Engineer in the biggest bank of South America where I design, implement, and maintain systems in a highly available, real-time distributed platform. I also founded FIIZ TAX and documented my journey here. I have been working in the finance industry for over three years now, and during this time I could take part in many projects regarding smart payments, banking systems and financial transactions. In addition to my career as a Software Engineer, I worked as an Electronics Engineer, Telecommunication Engineer, and Instrumentation and Control Engineer in a wide range of industries such as the aerospace, energy and telecommunication.

My Skills

I developed a wide range of engineering skills throughout my academic and professional career.

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    HTML / JavaScript / CSS
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    Splunk / AppDynamics
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    CorelDRAW / Illustrator
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    Distributed Systems
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    Embedded Systems

More of my credentials

As an engineer, I love to solve problems and to develop new technologies. Research, performance and efficiency are embedded in my DNA.

Work Experience


February 2020 - Present


Built an automated tool for calculating financial transaction tax in the Brazilian stock exchange B3.

Technologies: Java, Spring Boot, Angular, MySQL, AWS, Azure, and Firebase.

Senior Software Engineer

April 2020 - Present

Software Engineer

December 2018 - March 2020

Itaú Unibanco Bank

Designed, implemented, and maintained production grade components in a highly available, real-time big data platform, using Cassandra, Kafka, Spring Cloud, etc.

Technologies: Java, Distributed Systems, Cloud, Microservices, DDD, Puppet, Cassandra, Kafka, Spring Cloud Netflix, Clusters.

Award: Best performance of the Year, 2019.

Software Engineer

April 2017 - November 2018

Underwriters Laboratories

Developed software in Java and implemented payments protocols using proprietary language and libraries.

Technologies: Java, Docker, TDD, Git, SVN, IntelliJ, XML, JIRA, Scrum, XP and Kanban.

Award: Outstanding Engineer of the Year, 2017.

Network Infrastructure Technician

August 2016 – February 2017

Rede Nacional de Ensino e Pesquisa

Projected, developed and maintained optical backbones for high performance networks, and created an open-source software for network certification for fault detection.

Technologies: Java, Linux Scripts and Network Protocols (SNMP, TCP/IP).

Computer Engineer Intern

February 2016 – June 2016

Brazilian Air Force - CLBI Rocket Launch Center

Developed communication and control systems for UAVs (Unmanned Aerial Vehicles) using microcontrollers, embedded systems and electronic devices.

Technologies: C, C++, Assembler, PCB, QT, Git, AVR Studio, and Electronics.

Instrumentation and Control Engineer Intern,

January 2015 – May 2015

Ontario Power Generation - Thunder Bay Bioenergy Center

Projected, designed and implemented projects of automation and telecommunication, as well as performed data analysis for industrial wood boilers.

Technologies: Java, PLC, Industrial Protocols (Modbus, Fieldbus), HMI, and Virtualization.

Network Administrator

January 2011 – November 2011

Graphic Designer

January 2008 – December 2010

Camisaria Ipanema

Created, managed and maintained networks in three different states of Brazil including WLAN, WiMAX, optical and wired networks.

Technologies: Web Servers, Network Protocols, VPNs and Linux Servers.

Created advertising campaigns, drafting, posters, banners and flyers as a member of the graphic design team.

Technologies: CorelDRAW, Adobe Photoshop, Flash and Illustrator.

Award: Best Employee of the Year, 2010.


Bachelor Degree in Computer Engineering

March 2017

Bachelor Degree in Science and Technology

December 2015

Technician in Computer Networks

December 2012

Federal University of Rio Grande do Norte

Paper: Embedded Hardware Architecture for Recoverable and Ejectable Loads for Unmanned Aerial Vehicles published in the VI Forum of Innovation and Research of the CLBI in November of 2016.

Paper: Embedded Real-Time Environment Control System for Data Centers in the published in the XXIII CIENTEC 2017 in October of 2017.

Award: Medal of Academic Merit as the student with the highest grades among all Computer Engineering students - GPA 9.0/10.0. See credential

Instrumentation and Control Engineering Technology Diploma

May 2015 - Incomplete

English for Academic Proposes Diploma

August 2014

Confederation College

Scholarship: Sponsored by the Brazilian government through the program Science without Borders.

Award: Recognition of Achievement - GPA 3.9/4.0.

High School

December 2010

Sistema Colégio e Curso

Award: Best Student Performance - Final Year, 2010.

Award: Best Student Performance - Second Year, 2009.

Award: Best Student Performance - First Year, 2008.


IELTS Academic

October 2019 - October 2021

British Council

I scored 7.5 in the Academic English Exam. My individuals scores were: reading 8.0, listening 7.5, speaking 7.0 and writing 7.5.

IELTS General Purposes

October 2018 - October 2020

British Council

I scored 7.5 in the General Purposes English Exam which corresponds to C1 level in the CEFR system.

Educational Credential Assessment

July 2018 - July 2023

World Education Services

I have both of my degrees validated by the Canadian government. My credential is available here.

Professional Engineer

March 2017 - September 2020

Federal Council of Engineering and Agronomy of Brazil

I was a Professional Computer Engineer in the state of Sao Paulo in Brazil for over three years. My credential is available here (in Portuguese).

Volunteer Experience

I strongly believe we all should give something back to the society. I am always involved with volunteering work, and I want to use my skills to help others.


December 2019 - Present

Reverse Engineering Blog - Medium

Wrote several articles about computer engineering topics.

Portuguese Translator

April 2019 - August 2019

TED Conferences

Created subtitles, translations, and transcriptions of TED Talks.

Portuguese Translator

January 2017 - October 2017


Translated computer science courses to Portuguese.


December 2015


Taught programming logic to children using computer games. Hour of Code Project.

General Helper

March 2015

Thunder Bay 55 Plus Centre

Provided general help for elderly people.

Environmental Educator

September 2014

EcoSuperior Environmental Programs

Helped to organize the Open Streets Thunder Bay.

Programing Tutor

January 2010 - December 2010

Metrópole Digital Institute

Monitored secondary technical students in the subjects of programming in C and C ++.

My Portfolio

Here are some of my open source projects available on GitHub

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Contact Me

Feel free to contact me