AI-Native Data Engineer: Data Layer Lead (Remote)

Proton.ai; Boston (MA); Hybrid; USD 140,000 - 210,000; Full time

Job summary

Proton.ai in Europe, remote, is seeking a Senior Data Engineer to own and grow the unified Data Layer—serving as the foundation for all Proton products and the AI brain.

You will architect end-to-end data ingestion from diverse sources, build and operate ETL/ELT pipelines, and ensure data correctness across medallion layers. This role emphasizes AI-enabled tooling and close collaboration with engineering teams.

Qualifications

• 7+ years hands-on data engineering with production ownership.
• Strong programming and SQL skills; able to optimize pipelines.
• Experience with cloud data warehouses and major cloud platforms.
• Experience with ELT, orchestration, and data modeling.
• Proficiency with agentic tools (Claude Code, Cursor) to ship work.
• 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).
• Build and operate the ingestion and transformation pipelines powering the Data Layer using a modern orchestration framework and cloud data warehouse.
• Ingest and reconcile large, messy data across many source types: batch files, streaming events, APIs.
• Model data across medallion layers so it’s trustworthy and queryable for downstream teams and the AI.
• Drive data layer evolution with better architecture, tooling, and scale.
• Operate AI coding agents at a high level: scope work, structure context, parallelize agents, ship production outputs.
• Build systems ensuring data trust: validation, reconciliation, lineage, backfills, idempotent loads.
• Partner with backend, AI, product engineers to define data contracts.

Skills

Data engineering

SQL

Python

ELT pipelines

Data modeling

Data quality

Cloud data warehouse

Orchestration

Agent tools

Communication

Tools

Airflow

dbt

Claude Code

Cursor agent

Job description

Proton.ai in Europe, remote, is seeking a Senior Data Engineer to own and grow the unified Data Layer—serving as the foundation for all Proton products and the AI brain.

You will architect end-to-end data ingestion from diverse sources, build and operate ETL/ELT pipelines, and ensure data correctness across medallion layers. This role emphasizes AI-enabled tooling and close collaboration with engineering teams.