Hybrid Backend Engineer (Go/Node) — APIs & Webhooks

SPREEAI; San Francisco (CA); Hybrid; USD 145,000 - 175,000; Full time

Job summary

SPREEAI is looking for a backend engineer to own partner-facing services and internal ML tooling, building in Go or Node.js from design through production, and working with AI Platform and Partner Engineering.

You will design REST APIs, manage webhooks with retries and signatures, and model data in PostgreSQL or DynamoDB, in a fast-moving startup environment in San Francisco. This hybrid role pays 145,000–175,000 USD annually.

Qualifications

• 3+ years building and operating production backend services in Go or Node.js.
• Real experience with REST API design (versioning, pagination, idempotency) and auth (OAuth 2.0, API keys, JWT).
• Experience building reliable webhook delivery (at-least-once semantics, signature verification, retries).
• Comfort with PostgreSQL or DynamoDB query and schema design.
• Ability to work independently in a fast-moving startup environment.

Responsibilities

• Design, build, and operate backend services in Go or Node.js: REST APIs, auth, and the data layer behind partner-facing and internal tooling.
• Own webhook systems for partner integrations (delivery guarantees, HMAC signatures, retry logic).
• Design API versioning, pagination, and idempotency so existing integrations don't break as we ship.
• Work with PostgreSQL and DynamoDB, and make real calls on schema and query design under production load.
• Partner with AI Platform on the services that productionize ML checkpoints and serve inference, and with Partner Engineering on partner-facing API contracts.
• Help set backend engineering practices, code review norms, and service patterns as the team scales.

Skills

Go/Node.js backend

REST API design

Webhook delivery

SQL/NoSQL design

Startup mindset

Tools

Docker

Kubernetes

Job description

SPREEAI is looking for a backend engineer to own partner-facing services and internal ML tooling, building in Go or Node.js from design through production, and working with AI Platform and Partner Engineering.

You will design REST APIs, manage webhooks with retries and signatures, and model data in PostgreSQL or DynamoDB, in a fast-moving startup environment in San Francisco. This hybrid role pays 145,000–175,000 USD annually.