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Agentic Customer 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.
We build with our customers, ship fast, and obsess over craft. In a short time, Light has gone from idea to the operating core for leading companies like Lovable, Legora, and Fuse Energy.
We're an early team defining a new software category. Think engineers who love debits and credits, designers who care about reconciliation states, and operators who treat finance as a product. If you're excited to modernise how companies run money, you're in the right place.
Backed by world-class investors including Balderton and Atomico and advised by industry titans, we're building category-defining products with the freedom to ship ambitiously and own outcomes. Come help us make Light the global default for next-gen finance.
About the Role
You'll embed inside our most important customers and rebuild how their finance function works. You’ll map how the team really works, redesign the workflow, wire the integrations, and ship the agents, all to make sure they work in AI-native ways and are using Light to its full potential.
Your customers are Financial Controllers, Finance Directors and CFOs at fast-growing multinational SaaS and tech companies. Senior, technical, time-poor. You'll sit with them, diagnose the real problem, build the answer - then train them to run it without you.
This is a founding role in a new motion. Part process designer, part builder and deployer. You partner with an Account Manager who owns the stakeholders and the commercial; you own the process re-design and agent deployment. No two customers look the same, and there's no set playbook yet. You'll write it, and we’ll help.
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Key Responsibilities
- Embed with a customer's finance team, map and redesign their workflows AI-first
- Wire the integrations - pull data from ERPs, banks, and billing into Light
- Configure, ship, and supervise AI agents in production until the customer trusts them
- Hand back a workflow the customer runs themselves, and train their team from go-live
- Diagnose the edge cases the playbook doesn't cover, and ship the answer
- Measure & prove the impact against a week-0 baseline
- Partner two-in-a-box with your Account Manager, and pull in platform and AI engineering when you need them
- Feed repeatable patterns to the Product roadmap
Experience & Qualifications
- 3+ years close to how finance teams actually work - accounting, process design, consulting, or technical customer success
- You build & tinker. Vibe coding, data pipelines, and LLM agents are tools you reach for, and you ship working software, not slideware
- You're fluent enough in finance to hold your own with a Controller on multi-entity, consolidation, and reporting - and to know when a request won't work
- You bring structure to messy problems and move fast: diagnose, prototype, harden, ship
- You're comfortable in front of a CFO and next to an engineer, and you've delivered without formal authority over anyone
- You use AI tools daily and have specific opinions on where they help in delivery and where they don't
- Fluent English; additional European languages a plus
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Bonus
- Solutions or integration engineering background; experience mapping and redesigning finance processes and with AI agents in production (evals, guardrails, …)
- A finance / accounting qualification
You'll probably struggle here if
- You need a spec handed to you - here you find the problem, then build the answer
- You've only worked on internal products, never sat in front of a customer
- You think "redesign the process" means "automate what exists". The job is to rethink it from first principles and inject AI where it makes sense
- You want a big platform team to lean on - you'll have part-time support, not a safety net
- You've used ChatGPT once and weren't impressed - we go all in on AI at Light
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
- 🏝 Generous package of paid annual leave + public holidays
- 🥳 Regular socials and company off-sites (last time was in Piemonte, next time is in Provence)
- 🚀 A huge opportunity for career growth as you'll help shape a market-defining motion
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 🚀
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Jessica, London
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