Backend Engineer - APIs, Billing & Secure Access

Chatoly Assistant; United States; Remote; USD 110,000 - 170,000; Full time

Job summary

Chatoly Assistant is seeking a backend engineer to build and operate the foundational services behind a customer-facing conversational product. You will design and maintain platform APIs used by dashboards, chat widgets, and external integrations, with a focus on reliability, performance, and security.

Responsibilities include webhook ingestion with retries and idempotency, maintaining Stripe billing flows, audit logging, access controls, monitoring for failures, and safeguarding tenant

Qualifications

• At least four years building production backend services.
• Strong API design judgment and versioning APIs used by external teams.
• Solid database skills including query performance optimization and migrations on live data.
• Experience integrating billing or payment systems and handling edge cases.
• Defensive approach to authentication, tenancy boundaries, and data protection.

Responsibilities

• Design and maintain APIs used by the dashboard, chat widget, and external integrations.
• Own webhook delivery and ingestion, including retries, idempotency, and signature verification.
• Maintain Stripe billing and subscription flows covering plan changes, usage limits, and failed payments.
• Build audit logging and access controls needed for customer security reviews.
• Instrument backend systems so failures and performance issues are detected proactively.
• Protect tenant boundaries and data isolation across the platform.

Skills

API design

Production backend

Database optimization

Billing integration

Security practices

Webhooks & retries

Job description

Chatoly Assistant is seeking a backend engineer to build and operate the foundational services behind a customer-facing conversational product. You will design and maintain platform APIs used by dashboards, chat widgets, and external integrations, with a focus on reliability, performance, and security.

Responsibilities include webhook ingestion with retries and idempotency, maintaining Stripe billing flows, audit logging, access controls, monitoring for failures, and safeguarding tenant