Senior Integration Engineer

Title: Senior Integration Engineer Location: New York ABOUT THE ROLE This is a high-ownership engineering role at a seed-stage AI supply chain startup focused on the CPG sector. You will own the integration layer that connects the platform's AI decision engine to the real-world systems where customer data lives: legacy ERPs, cloud data warehouses, object storage, FTP drops, and custom spreadsheets. Getting this layer right means AI-driven recommendations actually land in systems of record, reliably and at scale. WHAT YOU'LL DO - Build, extend, and maintain integrations across ERPs, cloud data warehouses, object storage, and custom data sources. - Design and orchestrate near-realtime syncs that handle millions of records per customer without manual intervention. - Go deep into each external API, including its quirks and undocumented behaviors, and build connectors that hold up against real customer data. - Write round-trip integration tests that protect the full read-update-write lifecycle from data loss. - Validate and cross-match data early in the pipeline to catch errors before they cause business harm. - Build monitoring and alerting so failures are caught and triaged before customers notice. - Work directly with CPG operators and their IT teams, owning integrations end to end from scoping through shipping and ongoing operations. - Evolve the integration layer so connecting new, unseen data sources becomes a configuration exercise rather than a rebuild. WHAT WE'RE LOOKING FOR - 3 or more years of hands-on production experience building and shipping data pipelines and integrations in Python. - Deep experience integrating third-party systems via REST, SOAP, and query-language APIs, including OAuth, rate limiting, pagination, and undocumented API quirks. - Strong proficiency with the Python backend stack: FastAPI, SQLAlchemy, and Pydantic. - Advanced SQL skills, including high-performance query writing and bulk upsert operations at scale (billions of records). - Experience designing idempotent, re-runnable pipelines with clean fetch, validate, normalize, and upsert patterns. - Experience building write-path integrations with safety rails, dry runs, failure capture, and full auditability. - Experience building for operability: structured logging, sync-run tracking, alerting integrations, and failure attribution. - Experience with cloud data warehouse platforms such as Snowflake, BigQuery, or Databricks. - Experience with background task orchestration frameworks (such as Temporal, Hatchet, or similar) for scheduling reliable syncs. - Bonus: NetSuite API experience, AWS services (S3, FTP), unstructured data ingestion, or legacy ERP integration background. - Comfort working directly with enterprise customers and their IT teams in an end-to-end ownership model. COMPENSATION & BENEFITS Visa sponsorship is available for this role. LOCATION On-site in New York, United States.