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, PhotonVentures and government grants, and is scaling rapidly to deploy the fastest optical compute currently available globally.
We are looking for an experienced Electronics Lab Technician to join our team. You will be working on cutting-edge research for optical computing. This involves a mix of electronics prototype production, assembly testing, and rework. There are also opportunities to work with the optics team and the mechanical team. You would “own” the electronics lab and control the stock, system parts and workflows within the lab.
There would be a lot of involvement with selecting the test and measurement kit for the lab as we grow and expand our test, measurement and assembly capabilities.
Oversee and manage both optical and electronics laboratories, ensuring efficient operations and compliance with safety protocols
Monitor inventory levels across multiple equipment categories and coordinate restocking to maintain continuous operations
Maintain all laboratory equipment in optimal condition while tracking calibration schedules and coordinating service requirements
Provide critical support for R&D projects including executing test protocols, assembling functional prototypes, and troubleshooting technical challenges
Must-Have
Demonstrable ability to manage comprehensive lab inventory systems and perform proactive day-to-day maintenance to ensure optimal lab operations
Proficient in operating sophisticated electronics lab equipment including lab-grade power supplies, oscilloscopes, microscopes, and specialised diagnostic instruments
Skilled in the use of hand tools and workshop equipment such as precision drills, files, hammers, and fabrication tools for prototype development
Expertise with specialised electronics assembly tools including soldering stations, precision crimping tools, wire strippers, and controlled heat guns
Proven capability in general soldering and electronics assembly tasks, including fabrication of custom cable assemblies and precision PCB rework
Highly skilled in advanced soldering techniques for fine-pitch surface mount components, including challenging BGA (Ball Grid Array) packages
Experience executing and documenting pre-defined test routines with accuracy and attention to procedural compliance
Enthusiastic about acquiring new skills and mastering equipment for innovative manufacturing processes and emerging technologies
Flexible and proactive approach with strong judgment skills to determine optimal assembly methods for prototypes while balancing project constraints and timelines
Strong Preference For
Experience conducting JTAG boundary scan diagnostics; XJTAG platform experience particularly valued
Hands-on experienceoperatingand maintaining 3D printers for rapid prototyping applications
Background working in optical laboratories with experience handling laser systems and optical equipment
Familiarity with wire-bond and die-bond machines for semiconductor packaging operations
Experience with sophisticated soldering systems including manual pick-and-place machines and programmable reflow ovens
Highly Competitive Salary: We are not saying our salary is a blank check, but let's just say it won't be a source of your stress
Share Option Scheme: We are all in this together! We believe in shared success while we build the Lumai of tomorrow
Pension Scheme: Plan for retirement with AVIVA
Private Health Insurance: We firmly believe that you come first, and a happy you is a healthy you! Look after yourself and your loved ones with AXA
Cycle to Work: Spread the cost of a bike, a bike and accessories or just accessories and save on tax
L&D Allowance: Stay at the forefront of your field with a £500 annual development budget
Subsidised On-site Lunches: Enjoy on-site healthy meals at half the price, as Lumai covers 50% of the cost
Holidays: Enjoy some deserved "me time" with 25 days paid holiday (plus bank holidays) per year
Socials: Be part of an inclusive community enjoying occasional all-company off-sites, lunches and socials
Our process is four stages. An initial conversation with our HR team to understand what you want from the role and what we want from it. Two technical sessions with various members of our engineering team. Finally, an HR-team session covering scope, terms, and any final questions. We aim to move fast on candidates we are excited about; expect roughly three to four weeks end to end.
Lumai is an equal opportunity employer. We make hiring decisions on merit, scope-fit, and the strength of the working relationship we expect to build with each hire. Applications welcome from candidates of any background. If you are not sure whether you are a fit, send a note anyway.
