Head of Data & AI

cozycozy.com; Paris; On-site; EUR 150,000 - 220,000; Full time

Benefits offered by this job

Stock options

Alan health insurance

Swile card

On-site Paris office

Job summary

Cozycozy is seeking a Head of Data & AI to own the function end to end and report directly to the CEO. You will balance leadership with hands-on work and drive data-driven decisions across Revenue, Marketing, Product and Finance.

You will guide architecture, data products, and AI initiatives in a fast-growing travel-tech environment. You will work from Cozycozy's Paris office, collaborate with a small senior team, and shape the data strategy while delivering measurable impact on efficiency and

Qualifications

• 4+ years hands-on in Data & AI with leadership or owning a data function.
• Able to turn needs from Revenue, Marketing, Product and Finance into a clear technical roadmap and communicate to non-technical teams.
• Experience shipping production ML and AI agents that automate manual work.

Responsibilities

• Own the data function end to end and report to the CEO.
• Act as a consultative partner to multiple teams to translate needs into a technical roadmap.
• Decide what software to build vs. buy and ensure data trust across the company.
• Push AI initiatives to replace manual, repetitive work.

Skills

Autonomous self-starter

Owner who ships

Half leader, half builder

Cross-functional partner

Data & ML depth

Tools

S3

Iceberg

Glue

Athena

dbt

Airflow

Dagster

Metabase

Job description

Cozycozy is the only platform that gives you real-time access to every type of holiday accommodation in one search. Hotels, apartments, Airbnbs, hostels, villas — even treehouses: we aggregate 20M+ listings from 100+ booking sites (Airbnb, Booking.com, Abritel/VRBO, hotels.com, and dozens of specialised marketplaces) across 50+ countries and 20 languages, with offices in Paris and Budapest.

Founded by the team behind Liligo and backed by Daphni, Xavier Niel and Thibaud Elzière, we already handle millions of searches monthly and we're growing fast.

Our mission: be the single place travelers need to compare every accommodation option, transparently and in real time, with results suited to their personal preferences.

Our ambition: build the world's best accommodation metasearch and scale it into every market.

This is a deeply technical business with high-stakes steering decisions, and data is its lifeblood. That's where you come in.

About the role

We're looking for a Head of Data & AI to own the function end to end and report directly to the CEO. This is one of the most strategic seats in the company: data touches almost every team between Revenue, Marketing, Product, Finance. You will sit on the company's Operating Center, turning data into the decisions that steer the business.

You'll be a player-coach with roughly half leadership (vision, roadmap, team management, technical stack) and half hands-on technical work on the hardest problems. You'll act as a consultative partner to every function: distilling what teams need into a technical roadmap, and telling them plainly what the numbers actually say, even when it's inconvenient. You decide what software we build vs. buy, guarantee that every figure the company trusts is trustworthy, and push AI hard to kill manual, repetitive work.

About you

The qualities that matter the most for this role

• Autonomous self-starter: you find the most pressing problems yourself, set priorities and build the roadmap.
• Owner who ships: you own outcomes end to end and prefer putting a simple model live and iterating over polishing a notebook.
• Half leader, half builder: you shape strategy with the CEO, prototype data products, and lift your team by rebuilding with AI and first principles rather than patching.

Must-haves

• 4+ years hands-on in Data & AI (DE, MLE, DS or similar), with experience leading scope, mentoring juniors, or owning a data function.
• Business partner: you turn needs from Revenue, Marketing, Product and Finance into a clear technical roadmap and make data legible to non-technical teams.
• Full-stack data and ML depth: you’ve built pipelines and medallion-style tables, ideally on a serverless AWS lakehouse (S3, Iceberg, Glue, Athena, dbt, Airflow/Dagster, Metabase). You’ve also shipped and maintained production ML (monitoring, retraining, CI/CD) and AI agents that automate manual work.

Nice-to-have

• Experience in travel or large-scale search and ranking, or in marketing data science (MMM, incrementality, causal methods).

You don't need to tick every box or have mastered every tool on our stack — but the ecosystem should speak to you, and you should be able to challenge and frame the work.

Why join Cozycozy?

A rare scope: own an entire function, reporting to the CEO, in a fast-growing travel-tech startup where your decisions move the business directly.

Work side by side with the founders and a small, senior data and product team — and build the team around you.

We reward initiative, ownership, and building from the ground up. The platform, models, and automations you ship will steer decisions used across the whole company.

A mandate to push AI hard — not to talk about it, but to replace real, tedious work with it.

Our Paris (75010) office, with unlimited coffee, tea, snacks, and drinks.

Competitive salary, stock options, Alan health insurance, and Swile card.

Our hiring process

1. First call with our recruiter
2. Technical interview with the Senior Data Engineer (Carlos)
3. Hiring Manager interview with the CEO
4. Technical & strategy case, presented to the CEO and key stakeholders
5. References
6. Offer