Senior FPGA/ASIC Modem Engineer

The role

You will design, implement, verify and release FPGA-based modem solutions for wireless satellite communications links. You will work on high-performance digital modem payloads for a LEO satellite system.

What you will do

• Own FPGA-based modem chains from micro-architecture to lab deployment
• Define micro-architecture of high-rate FPGA modem blocks and digital infrastructure
• Implement designs using SystemVerilog or Verilog
• Develop block-level and end-to-end self-checking hardware verification environments
• Develop FPGA synthesis and place and route build scripts
• Analyze results to close timing and meet power and resource requirements
• Define and implement hardware/software interfaces
• Conduct code and design reviews
• Collaborate with systems, HW, and FW/SW teams for lab bring-up
• Mentor junior engineers and provide technical leadership

Required qualifications

• Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or a related STEM field
• Minimum of 10+ years experience in design, development and implementation of wireless baseband modems using FPGA devices
• Proficiency in one or more HDL programming languages such as VHDL, Verilog, or SystemVerilog
• Experience writing verification frameworks using SystemVerilog/UVM, Cocotb or transactional-level modeling
• Thorough knowledge of modern FPGA architecture including advanced floorplanning clock-domain crossing (CDC) analysis, false-path isolation, and timing closure techniques
• Deep understanding of Digital Front End (DFE) architectures
• Experience with industry-standard bus interfaces such as AXI and AXI-streaming and high-speed interfaces such as DDR4/5, 10/40/100 Gb Ethernet and SERDES interfaces like JESD-204B/C, Aurora and Interl
• Experience with FPGA toolchains and workflows such as AMD Vivado
• Experience debugging FPGA or digital hardware in the lab using oscilloscopes, logic analyzers, spectrum analyzers, time-interval measurement tools, or similar instrumentation
• Experience working with embedded software design
• Familiarity with Linux-based development environments, Git, and automated testing
• Strong written and verbal communication and interpersonal skills

Nice to have

• Experience using timing and placement techniques with AMD UltraScale+ and Versal FPGA families
• Experience implementing both the MAC and PHY layers of a wireless modem such as 5G OFDMA or Single-Carrier DVB-S2(X)
• Experience with space, defense, or other reliability-critical electronics, including radiation-tolerant design, Triple Modular Redundancy (TMR), and single-event upset (SEU) mitigation techniques
• Experience with embedded firmware or low-level software for device control, board bring-up, telemetry, and calibration workflows
• Experience with board-level digital or mixed-signal hardware design, schematic review, clock-tree or oscillator circuitry and hardware bring-up
• Experience writing tests and automation scripts using C, C++ or Python
• Experience designing HW accelerators tightly coupled with the embedded processor subsystems
• Experience with the architecture, toolchains and programming of SIMD vector DSP engines

Before you apply

• Employment offers are contingent on the candidate’s ability to access export-controlled information in accordance with U.S. law

About the company

Logos Space is a Low Earth Orbit (LEO) satellite system designed to provide resilient, high-performance satellite-based connectivity services to enterprise and government customers worldwide. The company is led by a team of experienced engineers from the networking and satellite industries.