Senior Full Stack Engineer

Senior Back-end Engineer | AI start-up in RotterdamAt Passionfruit, we help food suppliers become the partner their customers want to work with.In food, trust depends on how well information flows between companies.We are building the system that makes that flow faster, more accurate, and easier to manage.The challengeFood suppliers handle thousands of requests each year from customers, auditors, and retailers asking how products are made, where they come from, and whether they meet food safety or sustainability standards. Responding quickly and accurately is business critical.Teams spend hours searching through systems and emails, pulling together documents, and retyping information into Excel, Word, or online portals. Once shared, valuable data disappears into files and inboxes.It's painful for both teams doing the work and their customers who deserve better.The SolutionPassionfruit automates answering customer requests. Our platform brings the right information together, handles repetitive tasks, and delivers it in the format customers expect. No new platforms. No unnecessary steps. It works directly in Excel, Word, or any browser.Every month, thousands of these requests move through our system. We detect patterns, identify data gaps, and help our customers serve theirs better.This allows food companies to handle more requests, faster, without adding headcount.We’re scaling quickly and looking for a senior engineer to help us build the backbone for that growth.Why join nowPassionfruit is used daily by leading food and beverage companies across Europe. New teams and companies join every monthYou’ll join a small, experienced team of six with the freedom to shape architecture, ship fast, and set the foundation for scale.This is a hands-on role with impact, great to someone who has seen systems grow and wants to build them cleanly from the start.What you will doDesign and build reliable, scalable services for our core platformWork across the stack, from back-end logic to integrations in Office and browsersDevelop AI-powered workflows that process documents, suggest answers, and fill in formsStructure and manage data to support accurate, fast responsesCollaborate directly with customers to understand problems and ship solutions quicklyContribute to engineering standards, architecture, and product direction as we growWho you are5+ years of engineering experienceStrong understanding of algorithms, data structures, and complexity analysis (Big-O notation).Proficiency in at least one modern programming language (e.g., TypeScript).Hands-on experience building and maintaining backend services, APIs, or microservices.Skilled in building and shipping full-stack products (React/Next.js + Node.js or similar)Strong preference for simplicity able to reduce complexity and write clear, minimal, high-impact code.Curious about AI and practical in applying itCommunicate clearly in English; Dutch is a plusLike working in small fast pacing teams with autonomy and responsibilityWhat we offerWork on meaningful problems used daily by real customersSalary €5,000–€7,000 per month depending on experienceFuture employee stock option planHybrid work from our Rotterdam officeTake the vacation time you need; no fixed limits€1,000 annual learning budget for books, courses, or conferencesTeam breakfasts, off-sites, and a group that genuinely enjoys building togetherHow to applySend us:Resume or LinkedIn profileGitHub or portfolio (if available)Optional: any side project you’re proud ofApply via LinkedIn or email lars@passionfruit.earth.We review applications on a rolling basis and reply within two weeks.