DSP Algorithms Engineer

Senior DSP Algorithms Engineer - Coherent Optical Systems Location: Austin, TX (Onsite - 5 days/week) Role Summary Senior individual contributor responsible for system-level verification and stress testing of coherent optical DSP algorithms prior to silicon tape-out. The focus is on breaking the design early by exposing algorithmic and system-level weaknesses under realistic and worst-case optical conditions. Key Responsibilities Perform end-to-end system-level DSP verification (Tx → Fiber → Rx) for coherent optical systems. Design aggressive stress tests, corner cases, and adversarial scenarios to uncover latent issues pre‑tape‑out. Build and refine optical channel and impairment models (dispersion, non‑linearities, noise, laser effects). Apply deep DSP algorithm knowledge to intentionally attack weak points. Partner with DSP designers to define performance metrics, analyze failures, and drive root‑cause fixes. Develop and automate verification frameworks using MATLAB, Python, C/C++, or similar tools. Own verification strategy independently in a distributed team environment. Must‑Have Skills & Experience Deep expertise in coherent optical communications DSP with hands‑on industry experience. Strong background in DSP algorithm development and system‑level (pre‑silicon) verification. Solid understanding of: Optical fiber channel behavior & physical impairments Coherent receiver architectures & signal processing chains Extensive experience with DSP modeling/simulation (MATLAB, Python, C/C++, SystemC). Ability to independently define and execute complex verification strategies. EE or related degree (BS/MS/PhD); experience matters more than degree. Commercial/industrial experience (not purely academic). Nice to Have RTL or hardware implementation awareness AFE behavior and DSP interaction Fixed‑point modeling, ASIC/DSP constraints FEC (LDPC, RS, OFEC), mixed‑signal effects (jitter, PLL/PLL) Other Details Work Authorization: H1-B sponsorship available / USC / GC Interview Process: 3 rounds (approx. 2 weeks) Compensation: Competitive base + equity Relocation: Case‑by‑case #J-18808-Ljbffr Vibotek LLC