Firmware Engineer

How do you imagine the future?

Our purpose is to design a smarter future for a better life. At Efacec, we step up and give you the opportunity to design it.

Who we are:

Efacec is a Portuguese company that has been anticipating the future for over 70 years. We develop integrated solutions in the sectors of renewable energy, the transmission and distribution network, as well as in the areas of the environment and sustainable mobility, with engineering and technology made in Portugal, with an impact on improving the daily lives of millions of people. Our headquarters are located in Portugal (Matosinhos, Maia and Oeiras) but we are present in 12 countries and sell to more than 85 countries.

What are we looking for?

To reinforce our Technology team at the Electric Mobility Unit, we are looking for a Firmware Engineer to support the Embedded Software Development of electric vehicle charging stations, for our Maia office.


  • Design and develop firmware for electronic devices, ensuring high quality and performance;
  • Collaborate with the hardware and software teams to integrate the firmware into the final product;
  • Perform rigorous testing to identify and fix bugs, ensuring firmware stability and reliability;
  • Participate in the full development cycle, from project design to firmware maintenance and upgrades;
  • Clearly and accurately document the firmware development process, specifications, and guides.


  • Bachelor's/Master's degree in Electrical/Computer Engineering;
  • More than 2 years of experience in embedded software development;
  • Knowledge of firmware implementation on platforms such as STM32Cube;
  • Experience in implementing communication drivers such as Modbus, CAN Protocol, HAL Drivers;
  • Experience in C, C++, Python Knowledge of operating systems such as Linux;
  • Ability to work with targets and deadlines;
  • Orientation for the team;
  • High problem solving ability;
  • Good learning ability;
  • Ability to have attention to detail;
  • Good verbal and written communication skills;
  • Good English skills.

What we offer:

  • Opportunity to join a reference business group in the Energy, Environment, and Mobility sectors, with a strong international presence;
  • Possibility of learning and training on a "learning by doing" basis;
  • Access to training through our Mast3r Academia (internal training academy) and partner entities;
  • Permanent access to our medical and nursing services;
  • Access to protocols and strategic partnerships;
  • Possibility to work in a hybrid regime (presential/remote).