Senior AI-Native Data Engineer – Remote Europe

Proton.ai; United States; Remote; USD 134,000 - 202,000; Full time

Job summary

Proton.ai is hiring a Senior Data Engineer to own and grow the Data Layer—the unified foundation powering our product and AI brain. You’ll design end-to-end ingestion, modeling, and serving pipelines across raw, refined, and curated medallion layers.

You’ll work with Claude Code and other agentic tools, ensuring data correctness, implementing validation, lineage, and backfills, while collaborating with backend, AI, and product teams.

Qualifications

• 7+ years hands-on data engineer with production ownership.
• Strong SQL and programming skills for pipelines and data models.
• Experience with cloud data warehouses and orchestration frameworks.
• Experience ingesting from multiple sources: file-based, event/streaming, and API-based.
• English at C1 or above.

Responsibilities

• Own the Data Layer end to end: ingestion from file-, event-, and API-based sources; the medallion-style model (raw → refined → curated); and the serving layer that powers the product and the AI brain.
• Build and operate the ingestion and transformation pipelines that power the Data Layer, using a modern orchestration framework and cloud data warehouse.
• Ingest and reconcile large, messy, real-world data across many source types and shapes — batch files, streaming events, and APIs.
• Model data across medallion layers so it’s trustworthy, queryable, and stable for downstream teams and the AI.
• Help take the Data Layer to the next level — better architecture, better tooling, more scale, more sources — and have a real say in what that looks like.
• Operate AI coding agents (Claude Code and similar) at a high level: scope work, structure context, run agents in parallel where it makes sense, and ship reviewed, production-quality output.
• Build the systems that make data trustworthy — validation, reconciliation, lineage, backfills, idempotent and incremental loads — so downstream teams and the AI don’t inherit silent errors.
• Partner with backend, AI, and product engineers (and occasionally customers’ IT teams) to define the data contracts they build on.

Skills

Data engineering

SQL proficiency

Programming

Data modeling

ELT pipelines

Cloud platforms

Agentic tools

Tools

Airflow

Claude Code

BigQuery

Job description

Proton.ai is hiring a Senior Data Engineer to own and grow the Data Layer—the unified foundation powering our product and AI brain. You’ll design end-to-end ingestion, modeling, and serving pipelines across raw, refined, and curated medallion layers.

You’ll work with Claude Code and other agentic tools, ensuring data correctness, implementing validation, lineage, and backfills, while collaborating with backend, AI, and product teams.