Most backend engineers write APIs. You'll write the ones that talk to SAP. This role owns the integration layer of an enterprise HR platform - the SSO implementation, the SAP/ERP adapters, the payroll export/import pipelines, the audit logging system, the message queues. It's unglamorous work that makes or breaks enterprise software. If you find satisfaction in a perfectly idempotent event handler and a clean RBAC model, you'll love this. What makes this role interesting: You'll touch systems most engineers never get near. The AI tooling (Claude Code Max 20x + ChatGPT Pro) means the repetitive scaffolding disappears and you spend your time on the problems that actually require a human. What you'll actually do Implement SSO integration using OpenID/OAuth2 with the client's identity provider Build and harden RBAC - role hierarchy, field-level permissions, audit trails Design and implement bi-directional SAP ERP integration (employee master data, payroll, cost centers) Own the RabbitMQ event architecture for async workflows across modules Write the country-specific compliance logic: payroll rules, leave policies, statutory contributions across 15+ countries What we need from you Strong Golang - you've built production APIs, not just tutorials Experience with at least one ERP or enterprise integration (SAP, Odoo, or equivalent) MySQL schema design you're not embarrassed to show You write tests as part of writing code, not as an afterthought Comfortable in English - the codebase, tickets, and technical docs are in English Compensation: USD 1,500/month (PJ)