FITec is a private, non-profit Institute of Science and Technology (ICT), with distributed presence in the following locations: Recife, Campinas, São José dos Campos, Belo Horizonte, and Manaus. At FITec, we are driven by the passion to do things differently, to delight our clients, and to deliver unique experiences. To achieve this, we seek people who want to go beyond thinking outside the box—we seek people who want to reinvent it. Therefore, we want to work with you—someone committed to realizing dreams, delivering results, and being happy. Together, let’s share moments of professional growth and fun. We are hiring a Mid-Level Firmware Developer to join a multidisciplinary team working on an international project in the electro-electronic sector. **Responsibilities and Duties** * Develop firmware for a physical-key-based authentication embedded system with post-quantum security level; * Optimize code to meet requirements for low power consumption, code size, and performance; * Develop and maintain secure and efficient code, proficiently using two or more of the following languages: Assembly, C, C++, Python; * Write technical documentation in English; * Participate in all stages of the firmware development lifecycle: analysis, design, coding, testing, and deployment. **Requirements and Qualifications** **Mandatory:** * Bachelor’s degree in Computer Science, Engineering, or related fields; * Experience developing software in C/C++ programming languages; * Experience with microcontrollers (ARM Cortex-M series) and embedded software systems; * Solid knowledge of microcontroller architecture and firmware optimization techniques (size, power consumption, and performance); * Knowledge of cryptography and implementation of cryptographic algorithms on microcontrollers; * Extensive hands-on experience with laboratory equipment (logic analyzer, oscilloscope, multimeter, signal generator, etc.) and technical documentation (datasheets, reference manuals, etc.); * Advanced English proficiency for writing, reading, and oral communication. **Desirable:** * Master’s or doctoral degree in Computer Science or related technical fields; * Experience with Python; * Experience in low-level engineering (e.g., pointers, memory management, or ARM Assembly programming); * Experience in Post-Quantum Cryptography (particularly lattice-based cryptography). **Additional Information** **We Offer You:** * An excellent work environment where everyone supports each other, and individual effort is the key to organizational success; * Competitive remuneration aligned with your profile and experience; * A comprehensive benefits package, including Meal Voucher, Health Insurance, Dental Insurance, GymPass, Private Pension Plan, and Life Insurance. FITec is recruiting professionals from engineering, computing, mathematics, and statistics to engage in Research, Development, and Innovation (R&D&I). New hires will work on high-complexity projects alongside highly experienced professionals, in an environment that fosters creativity and professional development. A culture of innovation permeates its more than 400 highly qualified and experienced employees across units in Manaus, Recife, Belo Horizonte, Campinas, and São José dos Campos. Solutions developed by FITec have been deployed in over 25 countries, with a broad track record of successful product family developments across industries including Industrial Automation, Agribusiness, Telecommunications, IT, Electrical Energy, Healthcare, and Automation. Strategic partnerships with universities and major national and international companies further reinforce FITec’s identity as a cutting-edge R&D center, strengthening its position within the innovation ecosystem. **About FITec**: FITec is an ISO 27001-certified Institute of Science and Technology (ICT), accredited by MCTI, SUFRAMA, and EMBRAPII, authorized to develop projects across multiple market segments, and eligible for all government incentives supporting R&D&I—including the Informatics Law (CAPDA and CATI), the Innovation Law (“Lei do Bem”), ANEEL R&D, ANP R&D, FINEP, BNDES, PADIS, and EMBRAPII.