ASIC Lead - Digital

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.

We’re searching for an 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.