Senior Data Engineer, Enrichment

About Unify Unify is building the first AI-powered system of action for revenue teams, helping companies transform outbound into a top-performing growth engine by making go-to-market execution observable, repeatable, and scalable. Founded in 2023 by leaders from Ramp and Scale AI, our team brings experience from companies like Airbnb, Meta, Waymo, Monday.com http://Monday.com, and more. Unify increased revenue by 8x in 2024 and serves customers including Perplexity, Cursor, SoFi, and Justworks. We’re a high energy, high intensity team that has raised $58M from Thrive, Emergence, OpenAI and others. We’re building the future of GTM - come join us! ABOUT THE ROLE Unify is building the infrastructure that powers the next generation of go-to-market. As Senior Data Engineer for Enrichment, you'll own the systems that create and maintain the largest, highest-quality first-party contact dataset in the market. You'll design the pipelines that ingest data from multiple vendors, build the intelligence that decides which sources to trust, and create the quality infrastructure that makes Unify's data a defensible competitive advantage. WHAT YOU'LL DO - Build the enrichment platform - Design and scale pipelines that process 100M+ contact records, integrating with large-scale contact data vendors. - Own data quality - Build deduplication, entity resolution, and record matching systems that merge contacts from multiple sources into a single high-quality record. - Optimize vendor economics - Create waterfall enrichment logic that maximizes coverage and freshness while minimizing per-record cost across a portfolio of data vendors. - Ship freshness infrastructure - Build systems that detect job changes, flag stale records, and trigger re-enrichment to keep the dataset current. - Instrument and measure - Create quality scoring, coverage dashboards, and accuracy metrics that give the business visibility into dataset health. WHO YOU ARE - 5+ years of data engineering experience, including 2+ years working with contact data, enrichment systems, or data infrastructure. - Deep experience with data vendor APIs and the economics of contact data (coverage rates, accuracy tradeoffs, cost per record). - Expert-level SQL and data modeling skills, with experience designing schemas for large-scale entity datasets. - Track record building production data pipelines using modern tooling (dbt, Airflow, Dagster, Spark). - Experience with entity resolution, deduplication, and fuzzy matching at scale. - Strong understanding of data warehousing (Snowflake, ClickHouse, BigQuery) and performance optimization. - Business-minded: you understand that data quality directly impacts revenue and can articulate tradeoffs in terms the GTM team understands. This a salaried position with a target range of 225,000 - $285,000 (depending on experience), equity package and comprehensive benefits (including medical, dental, vision, and 401(k) options). This position is onsite in either San Francisco, CA, or New York City, NY, offering the invaluable opportunity to work closely with a talented team in a dynamic, high-energy environment. Being in-person enables real-time collaboration, fosters creative problem-solving, and strengthens the connections that drive innovation and impact. You'll be at the center of our fast-paced operations, contributing to a culture that values engagement, growth, and teamwork.