Staff Engineer - Business Spend

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About the role

About Pleo Messy spend management is tricky business. And tedious processes are a lose-lose situation for all involved, not just finance. At Pleo, we're changing that. We build spend solutions that make managing money seamless, empowering, and surprisingly effective for finance teams and employees alike - with a vision to help all businesses ‘go beyond’. The word ‘Pleo’ actually means ‘more than you’d expect’, and living by that mantra has been the secret to our success over the last 10 years. Now, we’re at a pivotal moment in our journey; every move we make has a direct impact on our 40,000+ customers, our business, and our collective success. We need people who take pride in uncovering customer needs, who turn complex problems into simple solutions, challenge the way things are done (respectfully), and always aim high. With great ambitions driving us forward, we can’t say we’ve got this whole thing figured out. And frankly, that’s half the fun! What we can say is that we’re a driven, progressive, and, importantly, a kind bunch of 850+ people from over 100 nationalities, all committed to delivering the future of business spending, together. About the role Please note: applications will be open until Tuesday 13th October 2026 at 08.00 CEST. We will not review any applications before the closing window so please don't rush to apply and use the time to submit a high quality application. We're looking for a Staff Engineer to join the Business Spend segment at Pleo. In this role, you'll help us build invoices, purchase orders, supplier invoices, cards for subscriptions and be part of Business Spend as we scale procurement to pay services. If you're excited about systems with real history and are passionate about building services that handle what a company spends to run itself, then this is the opportunity for you! Who you’ll be working with and reporting to You’ll report to our Engineering Manager in Business Spend and work closely with teams in accounting systems and card infrastructure. Our team of 10 is highly collaborative and dedicated to invoices and vendors. You’ll also have the chance to partner with teams across product, design and compliance to ensure success. What you’ll be doing As a Staff Engineer, you will: • Partner with the Engineering Manager to own and be accountable for the whole architecture of Business Spend. • Own significant parts of our supplier data migration, moving supplier and bank account logic out of a legacy service into a dedicated one, per customer and without downtime. • Improve the reliability of our invoice payment flows, where roughly 2.5% of payments currently fail and every failure is a customer who can't pay a supplier. • Turn our new vendor data model into working software, so that a supplier means the same thing across cards, invoices, and accounting. • Help the 3 teams make consistent technical decisions, through design documents, code review, and the architecture forum, without being anyone's manager. • Raise the people around you, through pairing, review, and writing things down clearly enough that someone in another time zone can act on them. To put things into context, here's what's on our roadmap right now: extracting supplier management out of our legacy invoice service, meeting the ISO 20022 structured address requirements for outbound payments, and rebuilding how we model suppliers and vendors across the whole of Business Spend. On the technical side, you can expect to work with the following stack: AWS, Github actions, Kotlin on the JVM, Kafka, Spring Boot, Gradle, Kubernetes, and Grafana for metrics, logs, and traces. Our frontend is TypeScript and React. What you bring You’ll thrive in this role if you have: • Strong verbal communication. You can hold a room of engine

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