Project Manager, Systems Engineer

The Opportunity

Lumai is redefining how the world computes. We are an ambitious, venture-backed UK startup pioneering a breakthrough AI accelerator for data centers which uses 3D optical compute. Our radical technology uses light to perform computation at orders of magnitude faster speeds and at far greater scales than ever before, all whilst consuming far less energy than traditional approaches.

Lumai is unlocking performance and efficiency gains that could transform the economics of AI and compute infrastructure and reshape how intelligence scales globally.

If you are passionate about bringing groundbreaking technology to market, and want to be part of a team pushing the boundaries of what is physically possible, Lumai is where you can make it happen.

Founded in 2022, Lumai is a University of Oxford spinout using optical processing to accelerate large language models (LLMs) and other transformer-based AI systems. The team combines expertise in optical computing, machine learning, and physics.

Lumai has already secured over $15 million in investment from leading deep-tech investors like Constructor Capital, IP Group, Photon Ventures and government grants, and is scaling rapidly to deploy the fastest optical compute currently available globally.

As our Project Manager, you will be the operational backbone of our most ambitious programmes: from silicon bring-up and photonic integration to software stack delivery and customer pilots. You will work at the intersection of cutting-edge hardware, embedded firmware, and AI software, coordinating across disciplines where feedback loops are long, dependencies are tightly coupled, and the stakes are high. You will own end-to-end delivery, drive cross-functional alignment, and maintain relentless focus on what needs to happen next — without losing sight of the bigger picture.

You will report directly to the Head of Engineering and work closely with technical leads across hardware, firmware, AI applications, and operations teams.

• Own the end-to-end delivery of Lumai's core engineering programmes, including hardware development milestones (EVT/DVT/PVT), firmware bring-up, and AI software integration cycles

• Build and maintain detailed project plans, risk registers, and dependency maps across hardware, ASIC, photonics, firmware, and software work streams

• Run structured weekly programme reviews and steering meetings; produce clear, concise status reporting for leadership and investors

• Identify and actively manage programme risks and blockers — escalating early, proposing mitigations, and driving decisions to resolution

• Coordinate closely with supply chain, procurement, and external vendors (CM, foundry, packaging partners) to track NRE milestones, tapeout schedules, and prototype deliveries

• Maintain a single source of truth for programme status, decisions, and actions — driving accountability without creating bureaucracy

• Support resource planning and headcount prioritisation across teams, flagging capacity conflicts before they become critical path issues

• Facilitate cross-functional alignment between hardware engineers, firmware developers, AI/ML researchers, and business stakeholders with differing cadences and vocabulary

• Contribute to continuous improvement of Lumai's engineering operating model — proposing better processes, templates, and tooling as the team scales

Must-Have

• 5+ years of project or programme management experience, with at least 2 years in a hardware or deep tech environment (semiconductor, photonics, robotics, aerospace, or similar)

• Demonstrated ability to manage complex multi-disciplinary projects with hardware and software components running in parallel

• Strong working knowledge of hardware development life cycles — EVT/DVT/PVT, tapeout cycles, NRE structures, BOM management, and CM relationships

• Experience tracking ASIC or PCB development schedules, including foundry and packaging supply chains with long and uncertain lead times

• Exceptional written and verbal communication — able to translate technical complexity for both engineering teams and non-technical stakeholders

• Proficient with modern project…