Founding ML Engineer: Ranking & Data Platform

OneScreen.AI, Inc; Boston (MA); On-site; USD 180,000 - 240,000; Full time

Job summary

Onescreen is hiring the founding ML engineer who owns our matching algorithms from exploration through production and the data platform that feeds them.

You’ll design and ship models that rank OOH inventory against advertiser personas, markets, and dayparts, own the data warehouse shape and the pipelines that feed it, and publish the ranking APIs that downstream products rely on. You will mentor others as we scale.

Qualifications

• Production ranking or recommendation system ownership required.
• Strong SQL and data warehouse experience (BigQuery preferred).
• Fluency in ranking and matching modeling (learning-to-rank, retrieval, re-ranking).
• Experience with offline/online evaluation and measurement.
• Ownership of data pipelines from ingestion to serving.
• Clear writing and self-direction.

Responsibilities

• Design and ship matching and ranking models for OOH inventory.
• Own the data warehouse end-to-end: staging, marts, feature pipelines.
• Stand up offline and online evaluation infrastructure.
• Publish ranking and matching APIs for product surfaces with latency and quality SLOs.

Skills

Ranking models

Data warehouse

SQL

End-to-end ownership

Online/offline evaluation

APIs

Tools

BigQuery

pgvector

FAISS

dbt

Job description

Onescreen is hiring the founding ML engineer who owns our matching algorithms from exploration through production and the data platform that feeds them.

You’ll design and ship models that rank OOH inventory against advertiser personas, markets, and dayparts, own the data warehouse shape and the pipelines that feed it, and publish the ranking APIs that downstream products rely on. You will mentor others as we scale.