Core Engineer

Description:

As a Core Engineer, you’ll design and ship the systems behind our credit, workflow and integration engine. That includes Zelo Procure, our source-to-pay procurement ERP with financing embedded directly into the buying flow. Your code ships this sprint, not next quarter.

What You’ll Build

• Core backend services in Java: credit workflows, document processing and financial operations
• Fast, reliable React/TypeScript frontends
• Zelo Procure: requisitions, POs, supplier onboarding, drawdown and embedded financing
• Event-driven workflows and state machines for complex, multi-step business logic
• AI/LLM-powered capabilities: document intelligence, classification, extraction and decisioning
• Data pipelines into our Microsoft Fabric Lakehouse (Spark) for credit intelligence and analytics
• Integrations with enterprise systems (SAP Ariba, Oracle Fusion, customer ERP/AP) and third-party APIs

Tech Stack

Java, React/TypeScript, PostgreSQL + Liquibase, Azure (Functions, Service Bus, Event Grid, API Management, Logic Apps), Microsoft Fabric, Spark, Drools, n8n, and Claude/LLM APIs.

Who You Are

• 2–6 years as a full-stack or backend-heavy engineer, with Java and React in production
• Strong at LLD/HLD: you can zoom from “what does this button do” to “how does this hold up at 100x load”
• You’ve built or scaled a product from small to large, and you know what breaks along the way
• Solid in API design, data modeling and distributed systems
• Self-managed: give you a one-line requirement and you’ll research it, think it through and come back with a real solution
• Curious about AI and automation, and comfortable building with tools like Claude, Cursor and Copilot
• Strong plus: fiscalization or e-invoicing experience (UAE mandate, ZATCA)
• Bonus: comfortable in front of customers