Diogo Freitas

Embedded Software Engineer for Mobility and Transport Industries

My ultimate career goal is to shape the future of mobility and transport industries with cutting-edge technologies and user-centered solutions.

Experience

Embedded Software Engineer

Mannarino Systems & Software Inc.
  • Developed embedded software in C for electric motor inverter propulsion control of eCTOL and eVTOL aircrafts.
  • Debugged issues and measured runtime performance of the software the using Lauterbach TRACE32.
  • Analyzed execution times and rebalanced the bare metal scheduler to assure real-time deadlines were met.
  • Experimented Simulink and Embedded Coder configurations to generate C code compliant with the coding standard.
  • Reviewed and corrected code generation using static analyzer Helix QAC to generate MISRA compliant source code.
  • Wrote test procedures and implemented automated test scripts in Python for the verification of airborne software HLRs.
  • Drafted and reviewed HLRs, LLRs and software architecture documentation.
  • Achieved at least 50% reduction of execution time while refactoring one function from the in-house math library.
  • Investigated hypothesis of pipeline stalls, cache misses, and unintended linkage of object code.
  • Created life cycle data artifacts to support the fulfillment of DO-178C and DO-331 objectives applicable to DAL A software.
August 2023 - Ongoing
Fully remote

Embedded Software Engineer

Volvo Group
  • Developed embedded software for BMS (Battery Management System) at cell and pack level for electric trucks and buses.
  • Implemented production-grade software for battery state estimation algorithms from existing POCs.
  • Developed Diesel engine control functions using Model-Based Design (MBD) tools (MATLAB, Simulink and TargetLink).
  • Achieved 40% reduction in CPU load after refactoring existing functions. Also, helped to decrease memory footprint.
  • Developed Python scripts to automate time consuming tasks and deliver them 9x faster.
  • Implemented and tested CAN & SAE J1939 functionality using tools like ATI Vision, Vector CANoe and CANalyzer.
  • Refactored the drafts of Functional Safety Requirements for compliance with ISO 26262.
  • Analyzed data from connected vehicles already operating in the field to evaluate performance of our algorithms.
  • Tested the developed functions in open/closed loop verification environments using MiL (Simscape), SiL (GDB) and HiL (dSPACE) tools.
  • Assisted in-vehicle tests to validate engine functions (e.g. engine brake, cruise control, fuel economy).
  • Lectured a hands-on online training sessions to my peers (Git, Bitbucket, Regex).
  • Led innovation initiatives within the team (e.g. design thinking workshops, hack days).
May 2018 - August 2023
Curitiba, Brazil

Autonomous Driving Intern

ZF Group
  • Developed the embedded software controlling a medium-duty driverless tractor with SAE Automation Level 2.
  • Implemented application software using C to control vehicle speed, Power Take-Off (PTO) and hydraulic implements.
  • Designed from scratch an embedded software architecture for a brand-new general-purpose ECU.
  • Implemented Hardware Abstraction Layers (HALs) above low-level drivers supplied by the semiconductor vendors.
  • Developed embedded software using C to interface peripherals (e.g. CAN controllers, WiFi modules and SD cards).
  • Performed field tests of automated driving features in realistic conditions of a real-world environment (e.g. farms, test tracks).
March 2017 - March 2018
Friedrichshafen, Germany

IT Applications Trainee

ExxonMobil
  • Supported Software Development Life Cycle (SDLC) activities, including requirements, coding, testing & deployment.
January 2016 - March 2017
Curitiba, Brazil

Web Development Intern

GAMURS
  • Translated several web page designs into HTML documents styled with CSS and jQuery.
December 2014 - February 2015
Sydney, Australia

Education

Chalmers University of Technology

MicroMasters® in Emerging Automotive Technologies
 128th place @ QS World University Rankings 2019
Relevant Coursework:
  • Model-Based Systems Engineering
  • Electric & Combustion Powertrains
  • Hybrid Vehicles
  • Automotive Safety
  • Sensor Fusion
July 2020 - December 2022
Online course by edX

Federal University of Technology Paraná (UTFPR)

Bachelor of Computer Engineering
 49th place @ Times Higher Education Ranking 2018 Latin America
Relevant Coursework:
  • Embedded Systems
  • Operating Systems
  • Distributed Systems
  • Software Engineering
  • Computer Architecture
  • Digital Signal Processing Lab
  • Data Structures & Algorithms
  • Control Systems
  • Systems Security
  • Database Systems
  • Computer Networks
  • Programmable Logic
  • Digital Image Processing
  • Analog & Digital Electronics
Extracurricular Activities:
  • Teaching Assistant @ Introductory programming courses (C, C++, OOP)
  • Research Assistant @ Bug tracking research project
  • English conversation club
  • French language course
GPA: 0.7524/1.0
August 2011 - August 2018
Curitiba, Brazil

University of New South Wales (UNSW)

Study Abroad Program
 45th place @ QS World University Rankings 2019
Relevant Coursework:
  • Robot Design
  • Software Construction
  • Artificial Intelligence
  • Embedded Systems Design
  • Microprocessors and Interfacing
  • Computing Applications for Mechatronic Systems
Extracurricular Activities:
  • UNSW Football Club
  • Hillsong ON Campus
March 2014 - November 2014
Sydney, Australia

Skills

Programming

C, MATLAB, Python (most familiar)
C++, JavaScript, ARM Assembly (least familiar)

Aerospace

DO-178C (most familiar)
DO-331, ARINC 653 (least familiar)

Automotive

CAN bus, UDS (most familiar)
MISRA, SAE J1939, AUTOSAR, ISO 26262 (least familiar)
Driving License Category D (non-articulated trucks and buses)

Tools

Git, Unix Shell, TRACE32, Polarion, Vector CANalyzer (most familiar)
Vector CANoe, Helix QAC, ATI Vision (least familiar)

Model-Based Design (MBD)

Simulink, Embedded Coder, Stateflow (most familiar)
Simscape, Simulink Check, Simulink Code Inspector, TargetLink (least familiar)

Verification

Requirements-based testing, X-in-the-Loop (Hardware, Software, Model).

AI

TensorFlow with Keras, scikit-learn, Pandas, NumPy, Seaborn, Matplotlib, Jupyter

Computing

Linux, TCP/IP stack, full-stack web development, SQL and NoSQL databases

Languages

Portuguese (native), English (fluent), Spanish (conversational)

Honours

Awards
  • 1st place @ Hackathon Copel Telecom
  • 2nd place @ Connecting to the IoT with NXP
  • 3rd place @ Twizy Contest: Renault Experience
  • Finalist @ SHIFT Hackathon MasterCard
  • Science Without Borders scholarship recipient
  • Patent WO2019081205

Projects

Electric Engine Inverter

Airborne software for electric propulsion control unit
Developed functions and infrastructure to spin the motor of an electric airplane.
August 2023 - Ongoing
95% remote
5% on-site in the USA

Battery Management System (BMS)

Battery management software for the lithium-ion batteries
Developed algorithms for state estimation, power management, diagnostics, safety monitors and other battery functions.
February 2022 - August 2023
Curitiba, Brazil

D13K Diesel Engine (Proconve P8)

Evolution of Volvo’s heavy duty engine
Participated on the development effort for the creation of new software strategies to control engine auxiliary systems. Overall, this new engine achieves up to 8% of fuel economy when compared with the previous version.
October 2019 - February 2022
Curitiba, Brazil

Virtual Rigs

Test automation solution for scan tool
Virtual electronic architecture implemented in Vector CANoe to simulate ECU signals consumed by the automated tests.
September 2018 - October 2019
Curitiba, Brazil

Lindner TracLink Pilot - Copy & Paste

Self-driving feature (SAE Automation Level 2) for medium-duty farm tractors
Developed software to control:
  • Vehicle and engine speed
  • Power take-off (PTO) activation
  • Hydraulic implement
May 2017 - August 2017
Friedrichshafen, Germany

SmartFare

Data collecting and electronic ticketing system for public transportation
Awarded the 2nd place on a nationwide design contest of IoT applications promoted by NXP Semiconductors.
August 2016 - November 2016
São Paulo, Brazil

Mobile Robotics Algorithms

Algorithms implementing common robotic tasks in MATLAB
  • Calculating attitude angles (roll, pitch, yaw) with gyroscope data
  • Create a point cloud based in images from a depth camera (RGB-D)
  • Obstacle detection based in 3D point cloud
  • Localization algorithm using data association and triangulation methods
  • Estimation of robot heading angle in a global reference frame
  • Occupancy grid with obstacle detection
August 2014 - October 2014
Sydney, Australia

Real-time Systems Lab

Real-time instrumentation system for motor control using Embedded Linux (RTAI)
Achieved real-time constraints by loading customized kernel modules that implemented inter-process communication between two threads using a shared memory location. Object-oriented drivers were developed using C++ to interface peripherals like ADC, DAC and encoder.
August 2014 - October 2014
Sydney, Australia

3D Environment Scanner

Point cloud generator for internal environments
A device built to map internal environments and plot it in a point cloud custom software.
June 2013 - September 2013
Curitiba, Brazil

Courses

Aerospace
  • Introduction to DO-178C @ Mannarino
  • Introduction to ARINC 653 @ Mannarino
  • Aircraft Systems and Avionics @ Udemy

Automotive
  • ISO 26262 (Software, Testing and Hazard Analysis) @ Volvo Group
  • High Voltage Systems of Electrified Vehicles @ AEA
  • Safety for Hybrid and Electric Vehicles @ AEA
  • Introduction to Autonomous Vehicles @ AEA
  • Introduction to Automotive Cybersecurity (ISO 21434) @ Volvo Group
  • Product Cybersecurity - Threat Analysis Risk Assessment (TARA) @ Volvo Group
  • Diesel Engine Fundamentals @ Volvo Group

Data Science
  • Data Science and Machine Learning Bootcamp @ Udemy

Tools
  • Model a Car and Design a PID Controller in MATLAB/Simulink @ Udemy
  • Vector CANoe Basics @ Volvo Group
  • Simscape Onramp @ Mathworks

Agile
  • Scaled Agile Framework (SAFe®) @ Volvo Group
  • Scrum Training & Simulation @ ExxonMobil

Programming
  • Programming with C# @ edX (by Microsoft)
  • Programmable Logic and VHDL @ UTFPR (master's level)
  • Ruby, HTML & CSS, jQuery @ Codecademy
  • Introduction to Software Testing @ Coursera (by University of São Paulo)

Innovation
  • User-centered Design @ ExxonMobil

Volunteering

Latin American Festival of Free Software Installation (FLISoL)

Course Instructor
 Activities:
  • Lectured a introductory course to Regular Expressions (regex).
April 2025
Curitiba, Brazil

Barco Sorriso

Volunteer
 Activities:
  • Supported a group of dentists who travel by boat to provide free dental care to remote riverside communities with poor access to health services.
August 2022 - Present
Guaraqueçaba, Brazil

Presbyterian Church of Brazil

Deacon & Head of Events
 Activities:
  • Served as deacon of my local church.
  • Planned, managed and executed social events of the church, with 5-digit budgets.
  • Developed a quiz buzzer machine to be used in activities with the kids.
March 2022 - February 2025
Curitiba, Brazil

NASA International Space Apps Challenge

Hackathon Mentor
 Activities:
  • Provided technical mentorship to teams working in embedded systems & IoT projects.
October 2019
Curitiba, Brazil

Free Software Technology Forum (FTSL)

Course Instructor
 Activities:
  • Lectured a introductory course to the Perl programming language.
September 2018
Curitiba, Brazil

Students@ZF

International Team Member
 Activities:
  • Organized recreational events to integrate ZF’s interns and to promote networking.
April 2017 - December 2017
Friedrichshafen, Germany

Farol da Madrugada

Volunteer & Translator
 Activities:
  • Spread a life-changing message of hope to marginalized people wandering the streets after midnight.
  • Coordinated and revised the translation of the organization’s website and flyers to English.
September 2011 - March 2016
Curitiba, Brazil

Hillsong Church

Welcome Lounge Team Member
 Activities:
  • Welcomed and connected newcomers in church.
March 2014 - November 2014
Sydney, Australia

Assembly of God Church

Youth Assistant Leader & Media Team Member
 Activities:
  • Developed a quiz buzzer machine for activities at the youth group.
  • Planned and executed activities for teenagers at the annual youth camps.
  • Operated the media projector during services.
October 2012 - October 2016
Curitiba, Brazil

Interests

Professional interests
  • Airborne Software & Avionics
  • Electromobility
  • ECU software development
  • Autonomous vehicles
  • ADAS
  • Connected cars (V2X)
  • Intelligent Transportation Systems
Recreational interests
  • Travel
  • Football
  • Movies & TV Series
  • Christianity
  • History
  • Economics
  • Wine, Beer & Cocktails