Dsp Engineer Jobs

About The Position

Requirements

• MSEE minimum, with specialization in high-speed electronic or electro-optic communication systems.
• At least 5 years of relevant industry experience with an MSEE, or at least 3 years with a PhD.
• Experimental experience bringing up and maturing high-speed DSPs in hardware, using coherent modulation (such as QPSK, 16QAM, or 64QAM) or multilevel PAM (such as PAM4).
• Foundational understanding of transmit- and receive-side DSP blocks, especially equalizers such as FFE, DFE, and MLSE and their tradeoffs, as well as clock and carrier recovery.
• Hands-on experimental experience measuring high-speed DACs and ADCs.
• Experience developing calibration methods and transferring them to manufacturing test.
• Experience developing and/or testing DSP-based control loops.
• Performance validation and productization experience, including transfer to volume production.
• Proficiency with high-speed laboratory equipment such as real-time and sampling oscilloscopes, BERTs, arbitrary waveform generators, and spectrum and phase-noise analyzers.
• Programming experience in Python and Matlab for laboratory automation, modeling, and data analysis.
• Excellent written and oral communication skills, including the ability to clearly and concisely communicate complex information across multiple platforms and modalities.
• Resourceful collaborator who supports teammates and colleagues as needed.

Nice To Haves

• PhD in Electrical Engineering or Applied Physics.
• Prior work experience with coherent optical modules or 224 Gbps/PAM4 AEC modules.
• Familiarity with industry standards such as OIF 400ZR/800ZR, OIF CEI-224G, or IEEE 802.3dj.
• Understanding of forward error correction, such as RS/KP4 or soft-decision FEC, and its interaction with DSP performance.
• Experience characterizing RF and mm-wave components, including S-parameters and nonlinear compression, and modeling linear and nonlinear signal impairments.
• Familiarity with module management and telemetry interfaces such as CMIS and firmware-based monitoring.
• Familiarity with RTL/Verilog or hardware-oriented algorithm implementation.
• Fluency with statistical analysis methods and software repositories/tools such as GitHub, GitLab, Bitbucket, or Docker.
• C/C++ programming experience.

Responsibilities

• Bring up and mature high-speed DSPs on prototype and production hardware, including transmit and receive data-path configuration, link optimization, troubleshooting, and debugging.
• Characterize and optimize transmit and receive DSP blocks, including feed-forward and decision-feedback equalizers, MLSE, and clock recovery; assess performance, complexity, and power tradeoffs.
• Measure high-speed DACs and ADCs, including ENOB, SNDR, linearity, interleaving spurs, bandwidth, jitter, and phase noise, and quantify their impact on modem SNR and BER.
• Develop calibration methods and transfer them to automated manufacturing test.
• Develop and test DSP-based control loops, including adaptation convergence, loop stability, tracking, and robustness across process, voltage, and temperature.
• Analyze link performance, including pre-FEC BER and SNR, and correlate measurements with system models.
• Develop Python-based lab automation for testing, characterization, and data analysis.
• Drive performance validation and qualification, and transfer DSP configurations, calibrations, and test procedures to volume production.
• Work with DSP design, DiAx cable design, firmware/controls, and hardware teams to provide experimental results that inform architecture, design, and manufacturability decisions and transition performance improvements into the product.
• Design, debug, and optimize firmware algorithms that maintain robust performance under varying link conditions.