THE OPPORTUNITY
Lumai is redefining how the world computes. We are a venture-backed University of Oxford spinout building an AI accelerator for the data centre that uses 3D optical compute, performing the matrix multiplications at the heart of AI inference with light rather than electricity.
That approach unlocks speed and scale beyond what silicon allows, at a fraction of the energy. If you want to work on technology that did not exist five years ago, and to see the direct impact of what you build, this is the place.
ABOUT LUMAI
Founded in 2022 and spun out of the University of Oxford, Lumai uses optical processing to accelerate large language models and other transformer-based AI systems. The team combines expertise in optical computing, machine learning, physics, and silicon. We have raised over $15 million from leading deep-tech investors, have a validated product and real customers, and are scaling fast.
THE ROLE
As Lumai's mixed-signal IP grows in scope and complexity, so does the risk of subtle interactions between analog and digital domains slipping through to silicon.



As a Mixed-Signal Verification Engineer, you will build and run the AMS verification methodology that catches those issues before tapeout, bridging the gap between analog simulation and digital verification practice.
You will develop the testbenches and verification plans that give the team confidence in functional correctness, corner robustness, and analog/digital interface behaviour across our converter, bias/reference, and clocking IP.
You will report to the Senior Analog/Mixed-Signal Design Lead and work closely with both analog circuit designers and digital/RTL verification engineers, keeping verification coverage aligned with tapeout risk.
WHAT YOU'LL DO
Verification Methodology

Develop and maintain AMS testbenches for mixed-signal blocks using Spectre-AMS or an equivalent AMS simulation environment
Define and execute verification methodology spanning functional, corner (PVT), and stati

📌 Mixed-Signal Verification Engineer (España)
🏢 Lumai
📍 España