Data Engineer, Machine Learning

Responsibilities

• Design and build production data pipelines that prepare conversational, voice, and multimodal data for model training and evaluation.
• Partner directly with ML engineers to understand data requirements for new models and experiments, and deliver datasets that meet those needs.
• Build and maintain infrastructure for dataset versioning, lineage tracking, and reproducibility.
• Develop data quality frameworks: schema validation, drift detection, and coverage monitoring.
• Optimise large-scale data processing for cost and performance across cloud infrastructure.
• Build tooling that makes it easy for ML engineers and researchers to discover, explore, and request data independently.
• Define and enforce data governance and privacy standards, particularly around sensitive conversational and voice data.
• Contribute to architecture decisions around the broader data platform.

Requirements

• 5+ years in data engineering, with meaningful experience supporting ML or AI teams.
• Strong SQL and Python skills.
• Experience building and operating ETL/ELT pipelines at scale using modern data platforms and tooling.
• Experience with workflow orchestration systems such as Airflow, Dagster, or Prefect.
• Hands-on experience with ML data workflows: training data pipelines, dataset versioning, data labeling pipelines, or model evaluation data.
• Solid understanding of how ML teams work and what makes a good training dataset.
• Comfort working with unstructured and semi-structured data — audio, text, JSON logs.
• Strong communication skills.

Nice-to-Haves

• Vector databases, embedding storage, or feature stores.
• Data from hardware or embedded systems: telemetry, sensors, real-time streams.
• Distributed compute frameworks such as Ray or Spark.
• Kubernetes and managed Kubernetes environments such as GKE or EKS.
• Data privacy frameworks, especially around voice or conversational data.
• Building internal tooling or self-serve data platforms.

Benefits

• 401(k) max employer match: 3.5% of compensation
• 100% employer-paid health, vision, and dental benefits for you and your dependents
• Unlimited PTO and sick time
• Flexible spending account with employer matching up to $1,650/year (medical FSA)
• Guardian Employee Assistance Program (EAP)
• Competitive stock options