Founding Backend Engineer - AI-Driven Enterprise Infra

Closai; New York (NY); Hybrid; USD 180,000 - 240,000; Full time

Job summary

Closai is seeking a Founding Engineer in New York, NY, hybrid. You will own the technical architecture end-to-end, architect, code, and ship systems that power purchase-history intelligence alongside the founder and CEO.

You’ll drive the core backend, data pipelines, and enterprise integrations while shaping Closai’s long-term technical vision. You will work on API design, data models, security, and scaling, with a focus on OAuth/JWT, multi-tenant data isolation, and privacy.

Qualifications

• Experience architecting backend systems and data pipelines.
• Exposure to enterprise integrations and security/privacy considerations.
• Building scalable, reliable systems for multi-tenant environments.

Responsibilities

• Own backend architecture end-to-end (APIs, data models, security).
• Design and ship purchase history pipelines (ingestion, normalization, enrichment).
• Lead enterprise integrations (Shopify app, connectors) for fast onboarding.
• Ensure scalability, reliability, and data privacy; align tech roadmap with SaaS monetization.
• Help build an AI-native engineering culture from the ground up.

Skills

Python

Node.js

REST APIs

GraphQL

PostgreSQL

AWS/GCP

OAuth/JWT

Shopify integration

Caching/Queues

Multi-tenant architecture

ETL

Embeddings

Vector databases

Semantic search

LLMs in production

UX

DX

Tools

Shopify API

GraphQL tooling

CI/CD

Job description

Closai is seeking a Founding Engineer in New York, NY, hybrid. You will own the technical architecture end-to-end, architect, code, and ship systems that power purchase-history intelligence alongside the founder and CEO.

You’ll drive the core backend, data pipelines, and enterprise integrations while shaping Closai’s long-term technical vision. You will work on API design, data models, security, and scaling, with a focus on OAuth/JWT, multi-tenant data isolation, and privacy.