Remote Checkout & Payments Backend Engineer

808Labs; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote work

Overlap with UAE hours

Job summary

808Labs is seeking a Backend Engineer to own backend integrations and payment flows for a multi-merchant checkout platform. You will build reliable connections and safeguards that keep orders and payment statuses accurate through routine processing, provider failures, and changing delivery plans.

You will design flows, handle refunds and split shipments, implement idempotent processing, and collaborate with cross-functional teams to ensure robust production systems.

Qualifications

• Several years of experience shipping production backend APIs.
• Practical experience with webhooks, asynchronous jobs, and idempotent payment or order processing.
• Experience with checkout or payments beyond subscriptions, including authorization, capture, refunds, and failure recovery.
• Ability to work through provider documentation, sandbox certification, and production incidents.
• Clear written English for API documentation, runbooks, and remote team communication.

Responsibilities

• Design payment flows that authorize and capture funds for purchases involving one or more merchants.
• Support refunds, partial refunds, cancellations, and split shipments while preserving correct order state and avoiding duplicate charges.
• Build recovery for timeouts, rejected orders, duplicate or delayed webhooks, and safe retries.
• Integrate commerce providers and merchant platforms through APIs and webhooks; manage sandbox testing and production launches.
• Define API contracts, test fixtures, and reconciliation processes so client applications can trust order and payment status.
• Write backend services with observability, idempotency, and audit trails, coordinating with mobile and product colleagues.

Skills

Backend APIs

Webhooks

Idempotency

Payment processing

Tools

Python

FastAPI

Docker

GitHub Actions

Job description

808Labs is seeking a Backend Engineer to own backend integrations and payment flows for a multi-merchant checkout platform. You will build reliable connections and safeguards that keep orders and payment statuses accurate through routine processing, provider failures, and changing delivery plans.

You will design flows, handle refunds and split shipments, implement idempotent processing, and collaborate with cross-functional teams to ensure robust production systems.