ASIC Lead - Digital

Company Overview

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’re searching for a ASIC Lead (Digital) who can drive a complex, high‑speed mixed‑signal chip from concept to mass production while line‑managing and mentoring a world‑class team of design engineers.

You will own delivery of the digital subsystems that stitch together > 100 high‑bandwidth lanes, interface to fast‑settling DACs and ADCs, and run deterministic control loops at > 100 MHz clock rates.

This is a hands‑on leadership position: you will manage and mentor a multidisciplinary team, own program execution to tape‑out, and serve as the principal technical authority for every digital block that underpins our OTPU.

Responsibilities

• Architect, plan and deliver the digital top level of a multi‑lane optical compute ASIC—RTL, synthesis, DFT/DFD, static‑timing and physical implementation.
• Lead cross‑functional teams (digital, analog, verification, layout, packaging, test, firmware) through all silicon lifecycle stages: architecture ► spec ► RTL ► physical design ► sign‑off.
• Lead and line‑manage 6‑12 digital & mixed‑signal engineers: goal‑setting, performance reviews, recruiting, and skills development and maintain a culture of rapid, first‑time‑right design.
• Define and track project schedules, budgets and risk‑mitigation plans; present status, trade‑offs and escalation options to executives and customers.
• Collaborate with analog leads on fast‑settling current‑steering DACs, high‑speed SerDes, PLLs and clock‑mesh networks to guarantee end‑to‑end timing determinism and low‑latency control loops.
• Drive design verification strategy—UVM test‑benches, gate‑level sims, FPGA prototyping—and own silicon bring‑up test plans that hit first‑silicon functional goals.
• Optimise multi‑lane protocols for bandwidth scaling, skew management and power efficiency; integrate error monitoring, calibration engines and field‑update hooks.
• Encourage a culture of continuous improvement—methodology automation, design‑flow enhancements, documentation and knowledge sharing.

Skills & Experience

• 12 + years of digital ASIC development, with at least 3 full product cycles taken from specification through volume production.
• Demonstrated success leading a digital team that delivered high speed ASICs containing high‑speed mixed‑signal interfaces (display drivers, image sensors, SerDes, RF SoCs, etc.).
• Strong command of RTL design (SystemVerilog / Verilog), CDC/RDC, STA, place‑and‑route, power intent (UPF/CPF) and DFT/DFD methodologies.
• Demonstrated success coordinating multi‑lane data paths, clock distribution and fast‑settling DAC / ADC control loops while closing timing and power at advanced nodes.
• Solid understanding of mixed‑signal interaction: coupling, jitter, supply‑noise and on‑chip calibration; able to read analog schematics and agreeing specification splits.
• Experience with high‑speed display or camera pipelines—timing controllers, MIPI / DSI / CSI, LVDS, DisplayPort, HDMI, or similar—strongly desired.
• Prior people‑management responsibility: hiring, mentoring, salary planning and performance management for engineers.
• Excellent project‑leadership skills: schedule ownership, risk analysis, vendor/foundry engagement, first‑pass success mindset.
• Outstanding written and verbal communication; comfortable presenting detailed technical and program status to executives, customers and cross‑site teams.

Compensation & Benefits

• Competitive salary and 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.
• 25 days PTO policy plus bank holidays.
• 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.