High-Speed Digital Design Engineer

About viaPhoton We are changing the norm by being customer-focused, technology-led. viaPhoton builds custom-engineered fiber optic solutions that power AI infrastructure, data centers, and 5G networks for some of the biggest names in tech. In five years we've grown to a team of 200+ and 4x'd our revenue in the last year alone, and we're just getting started. We're looking for dependable, hardworking people who take pride in their work and want to grow with us. About the Role You'll advance the development of 200G+ systems and interfaces for our next-generation Co-Packaged Optics (CPO) products, owning the high-speed electrical data path from concept to production. This is deep, hands-on signal and power integrity work at the cutting edge of AI data center connectivity, and you'll guide and mentor junior engineers along the way. Advance the development of 200G+ systems and interfaces for our NPO and CPO products, including 224G/448G PAM4 signal and power integrity (SIPI)Own technology selection, architecture, development, integration, and productization of cutting-edge CPO solutionsDefine PCB material selection and stack-ups, and evaluate S-parameters, eye diagrams, crosstalk, jitter, and COM performanceAssess host (switch fabric and xPU) and optical technologies, including compute fabrics and scale-up/scale-out topologiesGuide the electrical data path from concept to production, and mentor junior design team members What You'll Bring Have a BS in Electrical Engineering and 3+ years of hands-on high-speed design experienceBring a background in high-speed transceiver or transponder development, ideally for 200G/PAM4+ interconnectHave experience designing and applying 224G/448G PAM4 or PAM6 interconnect and related OIF-CEI or IEEE standardsAre well-versed in high-speed signaling fundamentals, channel behavior, PCB technologies, and RF design techniquesAre comfortable with SI simulation tools such as ADS or HFSS, and with EMI/EMC evaluation and mitigation Want to read the full job description? High-Speed Digital Design Engineer JD What's in it for you? Robust health, dental, and vision coverage that starts on day 1401(k) with match, vests immediately after a 90-day waiting periodFlexible PTO that grows over time10 paid holidays, including 2 floating holidaysMonthly team eventsClick here to view our full benefits overview. Having trouble with the link? Copy and paste: https://tinyurl.com/vPBenefits Location: Naperville, IL Schedule: Mon–Fri | Onsite Compensation: $80,000 - $150,000 base salary, plus annual bonus At viaPhoton, we are committed to furthering our culture of inclusion. We reinforce this through our core values and beliefs as well as our processes and strategic goals. We remind team members to seek various viewpoints, learn and be hungry with curiosity, and gain trust. We are an equal opportunity employer and make all employment decisions based on merit and qualifications. We do not discriminate on the basis of race, color, ethnic or national origin, religion or belief, sex, pregnancy, sexual orientation, gender identity or expression, age, disability, health condition, genetic information, marital or family status, military or veteran status, socioeconomic background, or any other status protected by applicable law. We provide reasonable accommodations and adjustments throughout the hiring process. If you need one, please let us know. Any personal data you share with us is handled confidentially and in line with applicable data protection law.