AI Engineer
Retire the ERP.
Light exists to replace factory-era ERPs with software that feels alive. Our Smart Financial Platform gives modern, global companies superpowers - automated accounting, real-time reporting, and financial flows that move at the speed of the business.
Come help us make Light the global default for next-gen finance.
This AI Engineer role
We're looking for builders who can take a customer problem from idea to production, wherever in the stack it lives. At Light, AI writes code and the bottleneck has shifted from writing to thinking, so we want engineers who work end-to-end and ship things that matter.
We are primarily hiring at senior-level for this role.
Your qualifications:
7-10 years of experience ideally, plus...
You build things. Not prototypes, not demos. Working software in production, doing something real for real users. This is the non-negotiable.
You're genuinely AI-native. You've changed the way you work because of AI tooling, not just added it to your workflow. You have an instinct for where it helps, where it misleads, and how to use it without losing ownership of the outcome.
You've built with LLMs. You have hands-on experience building products or features on top of large language models. Agents are a bonus, but working knowledge of how LLMs behave in production is a must.
You're comfortable across the stack. You don't need to be a specialist in everything, but you can't have a lane you refuse to leave. Our stack is Kotlin and React. If you're strong in one and curious about the rest, that works. If you need someone else to handle the other side of the feature, it doesn't.
You care about the product. You think about the person on the other end. You notice when something feels clunky, even if it technically works. You have opinions about what good software feels like and you act on them.
You ship early and often. Small batches. Learn. Go again. You're not precious about your work. You'd rather put something real in front of a customer than spend another week perfecting it in isolation.
Bonus points:
Experience in fintech or systems where data integrity is non-negotiable
Familiarity with accounting concepts: debits, credits, reconciliation
Background in high-growth startups where everything was still being figured out
Our Tech Stack:
We build on AWS, with a Kotlin backend, a React frontend, and infrastructure managed in Terraform. It's a real production system that global finance teams depend on every day.
You don't need to have used every piece of it. You do need to be comfortable in this kind of environment: real scale, real customers, real stakes.
The good stuff
In addition to being part of a great team and working in a really fun and innovative environment, we offer:
A competitive salary + potential stock options
25 days of annual leave + public holidays in the country where you are based.
Regular socials and company off-sites
A huge opportunity for career growth as you'll help shape a market-defining product.
The famous last words
Working at Light means you're embarking on an exciting journey to reshape the future of multinational financial operations. Our cheat-code is that we've built something like this before - and are now doing it again, only better. Our goal is to make global finance effortless and empower companies to make informed decisions.
Join the rocket ship while it's taking off
Recommended Jobs
SmartRecruiters Functional Lead - 15307
Salary: £To be confirmed on application (our client has asked for this not to be advertised). Location: Nationwide – Remote/Hybrid London 2x a week onsite
HR Manager role in Haringey - Outstanding Secondary
A high-achieving secondary school in Haringey is seeking a strategic and highly organised HR Manager for a permanent June start. This vital position involves managing the complete staff lifecycle, ov…
Actors/Actresses Aged 21-70 For Medical Campaign In September - TBC Paid £250
We're casting for London‑based Actors/Actresses or commercial models for a short film and photography brand campaign aged 21-70. ~ Medical or healthcare background is a bonus but not essential …
School Administrator - Outstanding Secondary School,...
School Administrator – Outstanding Secondary School, Wandsworth Start Date: As soon as possible Contract: Full-time, Permanent Salary: Paid to scale School information: This is an 1…
Senior Software Engineer - £day rate (outside IR35)
~ Joining a new project ~ Ideally have worked on Financial Services Projects before (Payments would be great) ~ Fullstack Experience ~ Tech Stack - Kotlin Backend, JS/TS React Frontend ~ Start …
Daily Supply Business Teacher - Sutton!
Job Description A great supply teacher does far more than simply cover a lesson. They bring energy, confidence, and consistency into the classroom, quickly building positive relationships with stu…
Art & Design Teacher - Newham Secondary School
Are you an Art Teacher with Graphics experience? We have a full-time temporary vacancy at an 11–16 secondary school in Newham starting this February half-term. About the Role This position covers…
Join us as an Early Years Teacher - January 2026 - Permanent
An inviting and community-focused mainstream primary school in Hounslow is seeking a passionate and dedicated Reception Teacher to join their Early Years team from January 2026 . This is a fanta…