Senior Full Stack Engineer, Third-Party Integrations

Responsibilities

• Own the architecture, development, maintenance, and reliability of complex third-party integrations end-to-end.
• Design and implement integrations using REST, GraphQL, webhooks, SFTP, and message queues.
• Build secure authentication and authorization flows using OAuth 2.0/OIDC, JWT, API keys, HMAC, mTLS, and appropriate secret management.
• Ensure integration reliability through idempotency, retries, rate limiting, circuit breakers, dead-letter queues, and monitoring.
• Develop data mappings, schema normalization, API versioning, structured logging, metrics, and tracing.
• Build and maintain React-based integration interfaces, including connection, OAuth consent, and status flows.
• Act as the technical point of contact for external integration partners, participating in API, implementation, and troubleshooting discussions.
• Create reusable integration components, technical standards, documentation, and playbooks.
• Use AI-assisted development tools to accelerate coding, testing, documentation, and API client development while applying strong engineering judgment and reviewing all AI-generated output.

Languages