Integration Developer Needed: Xero Accounting System - Medius (Invoice & Payment Sync) We’re looking for an experienced API integration developer to build a seamless connection between Xero Accounting and Medius for invoice and payment data synchronisation. Project Overview: The goal is to integrate Xero and Medius so that: - Invoices created/approved in Medius are automatically synced to Xero - Payments made in Xero are updated back into Medius - Data flows accurately and securely in both directions Requirements: - Proven experience working with Xero API (must be familiar with authentication, endpoints, and data structures for invoices, bills, and payments) - Familiarity with Medius API or willingness to work with its documentation - Ability to handle data mapping and ensure smooth two-way integration - Strong understanding of RESTful APIs, JSON, and webhooks - Knowledge of accounting workflows and data validation is an advantage Deliverables: - Functional integration setup between Xero and Medius - API documentation and deployment instructions - Basic error handling and logging Timeline: Estimated duration: 2–4 weeks Start date: Immediate How to Apply: Please include: - Examples of past Xero API or similar accounting software integrations you’ve built - Your proposed approach or brief outline for this integration - Estimated cost and delivery time