FPGA Engineer

We are looking for an FPGA Engineer to join our team and work on high-performance FPGA/SoC solutions, with a strong focus on digital signal processing (DSP), algorithms, and RF applications.

Location

This is a full-time, hybrid role based in Tallinn, Estonia.

Responsibilities

• Design and develop FPGA/SoC solutions based on Xilinx 7-Series and UltraScale/UltraScale+ devices.
• Develop RTL designs using VHDL and Verilog.
• Implement and optimize DSP algorithms, including FIR/IIR filters, FFT, DDC/DUC, decimation/interpolation, mixers, NCOs, and other signal-processing blocks.
• Develop digital signal-processing chains for RF / SDR systems.
• Work with high-speed data paths and streaming architectures.
• Integrate FPGA logic with Xilinx SoC and embedded processor subsystems.
• Perform RTL simulation, verification, and hardware debugging.
• Optimize FPGA designs for timing closure, resource utilization, and performance.
• Work with Xilinx Vivado, synthesis, implementation, constraints, and Xilinx IP cores.
• Analyze and resolve timing, clock-domain, and hardware-related issues.
• Collaborate with hardware, embedded software, DSP, and RF engineers.

Requirements

• 5+ years of commercial experience in FPGA development.
• Strong knowledge of VHDL and/or Verilog; experience with both is a plus.
• Hands-on experience with Xilinx FPGA/SoC platforms, including:
  • 7-Series;
  • UltraScale / UltraScale+;
  • Zynq SoC.
• Solid understanding of digital design and RTL development.
• Practical experience implementing DSP algorithms on FPGAs.
• Understanding of RF signal processing and SDR architectures.
• Experience with Xilinx Vivado and Xilinx IP.
• Good understanding of timing analysis, clock-domain crossing (CDC), reset strategies, and FPGA constraints.
• Experience debugging FPGA designs on real hardware.

Nice to Have

• Experience with Zynq-7000 / Zynq UltraScale+ MPSoC.
• Knowledge of AXI4 / AXI-Stream.
• Experience with high-speed interfaces such as JESD204, Ethernet, PCIe, DDR, etc.
• Experience implementing FFT, DDC/DUC, channelizers, beamforming, and other DSP blocks.
• Experience with ADC/DAC interfaces and RF transceivers.
• Knowledge of SystemVerilog, Tcl, Python, or C/C++.
• Experience with hardware/software co-design.
• Strong understanding of fixed-point arithmetic and FPGA-oriented DSP optimization.

About Sky Spy

Sky Spy is a fast-growing dual-use startup developing next-generation RF intelligence solutions for contested environments. We are backed by leading European VCs, combat veterans, and technologists. Our mission is to deliver intelligence that saves lives and empowers allied forces worldwide.