Senior Data Engineer

Lengow is a leader in intelligent e-commerce solutions that help brands and retailers drive profitable growth across the digital shelf. With powerful feed management, global price monitoring, and robust data capabilities, Lengow's comprehensive SaaS product suite enables merchants to amplify product visibility online, outrun competition with informed pricing, multiply sales on marketplaces, and monitor brand presence among distributors. Since 2009, Lengow has fueled digital growth for over 3,600 customers across thousands of marketing and sales channels in more than 60 countries. The Tech, Data, and Product Team The Tech, Data, and Product team comprises 70+ people from diverse backgrounds, working in our offices in Nantes, Paris, and Barcelona. Our products are developed thanks to six autonomous product teams, each working on a specific business domain. The Data Team The Data team (5 members) plays a critical role in supporting both our internal operations and external data offerings across our four core products: NetMarkets, NetAmplify, NetRivals, and NetMonitor. Empowering internal teams with data‑driven decision‑making tools, including dashboards, analyses, and reports Delivering scalable and maintainable custom data products—primarily dashboards and reports—tailored to client needs Building data‑based products and features that strengthen and expand our overall product offering Data Transformation Initiative Lengow is in the middle of a data transformation. We’re building a unified data offer to unlock the full potential of data across all our products, enabling better decision‑making, creating synergies between client‑facing data products, and supporting the development of data‑driven features in close collaboration with other product teams. We are also working to increase the scalability and automation of our client‑facing data products—especially dashboards and custom reports—which currently still require manual intervention. Building and refining our data roadmap Strengthening collaboration with other product teams Revamping the data stack by introducing new tools such as dbt, Airflow, Cube, and others to better align with our long‑term data vision Missions and Profile This role is ideal for someone who enjoys solving concrete technical problems while delivering measurable business value. We strongly value your ideas and expect you to actively contribute to shaping technical decisions and improvements. Senior Data Engineer Responsibilities Custom data products: During your first 6–9 months, your primary focus will be on supporting, maintaining, and improving existing client‑facing data products—mainly dashboards and reports. This includes hands‑on work in data engineering and analytics, with the goal of stabilizing, improving, and preparing these assets for future automation and productization. Technical guidance: Contribute to the ongoing data transformation by improving data models, strengthening data quality, and helping evolve the data stack and tooling. Data roadmap ownership: Progressively take ownership of key technical initiatives from the data roadmap, such as improving the data stack, refining data models, productizing reports and dashboards, and contributing to new data‑driven product features. Recruitment Process Pre‑interview: Chat with Alexandre, Talent Acquisition Manager (30 min) 1st interview: Meet Sébastien (VP Data) and Edoardo (Data Product Manager) (45–60 min) 2nd interview: Present a technical case to Sébastien, Edoardo and Olivier (CTPO) (60 min) Requirements Proven experience (5+ years) in data engineering or a similar role, ideally in a SaaS or e‑commerce context A clear and kind communicator who enjoys working closely with others Strong skills in coding, data modeling, and designing solutions aligned with business needs A proactive, autonomous, and flexible mindset—working in a small team often means switching between data engineering, analytics, and problem‑solving roles Experience with SQL, BigQuery, Google Cloud, ETL/ELT tools (e.g., Airflow, dbt, Apache NiFi), Python and data visualization tools (e.g., Looker Studio) Business‑level English proficiency (additional languages are a plus; our teams mainly speak English, Spanish, Catalan, French, and Italian) Bonus Points Have a strong interest in web and e‑commerce Enjoy bringing fresh perspectives to complex data challenges Benefits Meal vouchers: €8 per working day in France; available upon request in Spain (Edenred) Health insurance: Malakoff Humanis private health insurance and provident coverage in France; in Spain, Adeslas (including dental coverage) is available upon request Remote work: up to 3 remote days per week Flexible working hours: start between 8:00 and 10:00, with end times adjusted accordingly Mobility benefits: Bike mileage allowance or 50% reimbursement of public transportation tickets in France; Edenred Transport is available upon request in Spain Remote work allowance Professional development: access to professional events (Devoxx, meetups, etc.) and regular internal team‑building activities Team life: a weekly "Happy Break" every Thursday evening at the office, with food and drinks Syntec forfait jours with RTT – 218 working days per year, corresponding to a minimum of 9 additional days off on top of the 5 weeks of statutory paid leave (France only) Equipment choice: Choose your preferred operating system—macOS, Windows, or Linux Seniority level Mid‑Senior level Employment type Full‑time Job function Information Technology Industries IT Services and IT Consulting #J-18808-Ljbffr