Founding Engineer - Backend & Data Platform ($175,000 - $225,000 + Equity) at Greenline

Job Title Founding Engineer - Backend & Data Platform Salary $175,000 - $225,000 + Equity Company Description Greenline - Fast-growing fintech startup Job Description As a Founding Engineer, you will architect the foundational data platform that unlocks mortgage lending for 16.5 million self‑employed Americans. You'll build resilient ingestion pipelines for banking and tax data, design scalable microservices in Postgres, and enable ML‑driven insights that transform hours of manual review into minutes of automated processing. Location San Francisco, Austin, NYC, or Remote, USA Why this role is remarkable Take 0→1 ownership of a greenfield data backbone at a nimble, high‑agency startup composed of former Airtable and Opendoor engineers. Directly impact the lives of millions of underserved borrowers by automating complex non‑QM mortgage underwriting through innovative AI‑driven infrastructure. Receive a founding team title with an aggressive equity package and high architectural influence over the entire product lifecycle and technical roadmap. What you will do Design and implement robust data ingestion and normalization pipelines for third‑party financial sources like Plaid, the IRS, and accounting platforms. Architect performant backend systems for asset serving, authentication, and complex relational data modeling using Postgres and GraphQL. Productionize ML‑driven signals by implementing feature extraction pipelines and integrating classification and anomaly detection models into core workflows. The ideal candidate Proven experience building and operating event‑driven data systems and complex APIs at early‑stage startups where they wore many hats. Expert‑level proficiency in relational database design and a deep understanding of data correctness, auditability, and long‑lived data contracts. Practical familiarity with ML fundamentals including feature engineering and model evaluation, with the ability to consume and debug ML‑driven systems effectively. #J-18808-Ljbffr Jack & Jill/External ATS