Founding Analytics Engineer

• 7+ years as a Data, Analytics or Platform Engineer, ideally including a stint at a fast-moving consumer or marketplace company. Staff or Lead exposure expected.
• Hands-on with the modern data stack: BigQuery (or Snowflake, Redshift), dbt or equivalent, advanced SQL and data modeling, Python for pipelines, orchestration (Airflow, Dagster, Prefect).
• You have shipped event tracking and instrumentation in production, end to end: taxonomy, client and server-side events, attribution, GDPR-compliant opt-out, propagation downstream.
• Comfortable with ingestion patterns (Fivetran, Airbyte, CDC), reverse-ETL (Hightouch, Census, Segment), and access governance (IAM, row- and column-level security, PII tagging).
• You have built and owned a semantic or metrics layer, and you can arbitrate metric definitions with Finance, Ops and Growth without flinching.
• You treat AI agents as first-class data consumers: exposing data through MCPs, semantic APIs or text-to-SQL, with proper guardrails.
• Strong ownership: you write the standards, defend them, and fix what is broken without waiting for permission.
• A clear communicator who turns "ping the data person" rituals into self-serve handoffs.
• Fluent in English and French.

The honest trade-off

There is no data team to manage, and none planned in the short term. You get real autonomy and a direct line to the founders and function leads, in exchange for building alone before maybe building a team. At a comparable proptech you would join an existing team and an existing roadmap. Here, what a metric means at Zefir is not decided yet, and you are the one who decides it.

It suits a doer’s mindset, including someone who has already led and wants to go back to building.

Hiring process

• Screening with David, Talent (30 min)
• Deep dive with Gabriel, Engineering Lead: your past experience and what you want next (45 min)
• Technical interview with Diane, your future manager: data platform, modeling and tracking (1h)
• Cultural interview with Louis, co-founder, plus an informal exchange with a function lead (1h)
• Reference calls, then offer 🎉