Senior / Staff / Lead Analog Design Engineer - HighSpeed SerDes

2 days ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. Flux Computing designs and manufactures optical processors to train and run inference on large AI models. Join us in London to be part of a highly motivated and skilled team that thrives on delivering impact and innovation at speed. The role We are seeking an experienced Analog/RF IC designer to architect, implement and productise the multi‑lane, multi‑standard SerDes (serialiser / deserialiser) interfaces that move data in and out of the OTPU at tens of gigabits per second per lane. You will own both transmit and receive paths—equalisers, CDRs, drivers, samplers and clocking assist blocks—while ensuring robust operation over challenging channels and across multiple aggregated lanes. Your designs will be central to realising Flux’s multi‑terabit‑per‑second optical fabric. Responsibilities Model channel losses (PCB, package, fibre) and work with signal‑integrity engineers to co‑optimise link budgets, impedance control and return‑loss targets. Partner tightly with analog designers photonic, packaging, and digital micro‑architecture teams to integrate SerDes IP into large chiplets and optical transceiver modules. Skills & Experience 7+years of industry experience designing production high‑speed SerDes, multi‑GHz CDRs, or comparable mixed‑signal I/O macros in advanced CMOS nodes. Demonstrated success taping out >56Gb/s links meeting BER Deep understanding of link‑level signal‑integrity, phase noise, adaptive equalisation, clock multiplication and on‑chip calibration techniques. Bachelor’s degree in Electrical Engineering or related field (Master’s / PhD preferred). Excellent cross‑disciplinary communication, problem‑solving aptitude, and a proven ability to deliver in fast‑moving, innovation‑driven environments. A portfolio of patents, publications or open‑source contributions that highlights creative SerDes or high‑speed analog design insight. Competitive salary: £135k+, depending on experience. Stock options in a rapidly growing AI company. Based in our new 5,000 sq. ft. office in the AI hub of Kings Cross, London. To foster collaboration in our high-growth environment, we require all employees to work from our London HQ and live within a 45-minute commute. We offer an extra £24,000/year incentive for those living within 20 minutes. Comprehensive healthcare insurance. Private access to our in-house 3D printer. If you are passionate about pushing the boundaries of what\’s possible in AI and thrive in a high-energy, fast-paced environment, we want to hear from you. Apply now to join Flux and be a key player in shaping the future of computing. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Industries Semiconductor Manufacturing Referrals increase your chances of interviewing at Flux Computing by 2x Get notified about new Analog Design Engineer jobs in London Area, United Kingdom . Greater London, England, United Kingdom 3 weeks ago London, England, United Kingdom 1 day ago Rainham, England, United Kingdom 2 days ago London, England, United Kingdom 3 weeks ago City Of London, England, United Kingdom $50,000.00-$55,000.00 3 days ago London, England, United Kingdom 6 days ago London, England, United Kingdom 3 weeks ago City Of London, England, United Kingdom 3 days ago Saffron Walden, England, United Kingdom £38,000.00-£40,000.00 3 days ago Battersea, England, United Kingdom 2 days ago London, England, United Kingdom 1 day ago London, England, United Kingdom 4 weeks ago City Of London, England, United Kingdom £70,000.00-£80,000.00 1 week ago London, England, United Kingdom 3 days ago London, England, United Kingdom 2 months ago City Of London, England, United Kingdom 22 hours ago Uxbridge, England, United Kingdom 6 days ago London, England, United Kingdom 1 month ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr