Data Ingestion Engineering Lead

Sierra Ventures; San Francisco (CA); On-site; USD 180,000 - 260,000; Full time

Benefits offered by this job

Stock options

Health insurance

Meals provided

Parental leave

Unlimited PTO

Visa sponsorship

Job summary

Reflection is seeking a Data Acquisition Lead to guide a team building the ingestion layer for pre-training data. You’ll own crawling, extraction, and corpus storage while aligning with research, data quality, and partnerships teams. You’ll contribute technically and shape architecture for scalable, auditable data pipelines.

Lead a rapid, high-velocity team in a data-centric environment. Expect close collaboration with cross-functional partners and a focus on measurable downstream model impact.

Qualifications

• Experience leading data or infrastructure teams while staying hands-on.

Responsibilities

• Build, mentor, and grow a high-performing data ingestion team.

Skills

Data ingestion

Web crawling

Data lakes

Distributed compute

Orchestration

Tools

Airflow

Prefect

Ray

Beam

Spark

Parquet

JSONL

WARC

Job description

Reflection is seeking a Data Acquisition Lead to guide a team building the ingestion layer for pre-training data. You’ll own crawling, extraction, and corpus storage while aligning with research, data quality, and partnerships teams. You’ll contribute technically and shape architecture for scalable, auditable data pipelines.

Lead a rapid, high-velocity team in a data-centric environment. Expect close collaboration with cross-functional partners and a focus on measurable downstream model impact.