Billing Systems Developer (Php / Go)

Billing Systems Developer
We're seeking a Billing Systems Developer to build and scale the financial systems that power Command|Link's platform.
This role sits at the intersection of engineering, finance, and data, ensuring billing is accurate, resilient, and fully auditable across a global customer base.
Key Responsibilities
Design and develop scalable billing systems (invoicing, usage-based billing, credits, taxes, proration)
Build and maintain ledger-based financial systems with full auditability
Integrate with payment gateways (Stripe, ACH, etc.)
Ensure idempotent processing to prevent duplication and inconsistencies
Develop reconciliation workflows to detect and resolve discrepancies
Architect resilient systems with retry, rollback, and recovery mechanisms
Optimize and manage large financial datasets, including historical data
Build and maintain APIs for billing services
Debug complex production data issues and support safe data m...