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# Firmware Engineer - VHDL / FPGA

- **Company:** Grupo Oesía
- **Location:** Rivas-Vaciamadrid, Spain
- **Contract:** Permanent contract
- **Skills:** Computer Engineering, Software Debugging, Firmware, Field-Programmable Gate Array (FPGA), Software Requirements Analysis, System on a Chip, Systems Integration, Universal Asynchronous Receiver/Transmitter, VHSIC Hardware Description Language (VHDL), Vivado, Serial Peripheral Interface, ModelSim
- **Published:** October 29, 2026
- **Apply:** https://www.adzuna.es/details/5944335200

## About the Role

Senior Firmware Engineer - VHDL / FPGA | Defence & Avionics (Global Opportunity) - Grupo Oesía Our projects become technology that protects, connects and drives strategic sectors: our own. At Grupo Oesía, we work to ensure innovation delivers real impact, and we are looking for people who want to be part of that challenge. WHAT WILL YOUR MISSION BE? At Tecnobit, part of Grupo Oesía, we are looking for a Senior Firmware Engineer with strong VHDL and FPGA experience to join our Avionics & Communications team in Madrid.

We are looking for an experienced engineer with a solid background in firmware development, synthesizable VHDL and FPGA-based systems, who would like to contribute to advanced technology projects in the defence and avionics sector. WHAT WILL YOU DO IN YOUR DAY-TO-DAY ROLE?

Design and develop advanced synthesizable VHDL for FPGA-based systems. Develop and verify solutions based on Xilinx Zynq and UltraScale FPGAs, using Vivado. Perform functional verification using VHDL testbenches and ModelSim, as well as FPGA debugging and integrated logic analysis. Design and integrate Xilinx IP cores, custom cores and AXI buses. Implement and control communication interfaces such as UART, SPI and I2C. Use ChipScope for embedded logic analysis and FPGA debugging. Develop XSCT scripts and stand-alone applications using Xilinx SDK. Manage and trace system requirements using DOORS, ensuring their verification through testing. Support system integration, testing and verification alongside multidisciplinary engineering teams. WHAT ARE WE LOOKING FOR?

Degree in Telecommunications Engineering, Electronics, Industrial Engineering, Computer Engineering, or another relevant engineering discipline. Minimum of 4 years of professional experience in FPGA or firmware development. Strong professional experience developing synthesizable VHDL. Hands-on experience with Xilinx FPGAs, particularly Zynq and UltraScale. Professional experience using the Xilinx Vivado design environment. Experience in FPGA simulation, verification and debugging. Experience with ModelSim, AXI buses and embedded communication interfaces will be highly valued. Knowledge of DOORS and requirements-based development will be highly valued. Ability to work comfortably in English within an international engineering environment.