{"id":941420,"url":"https://alion.io/job/lengow-senior-analytics-engineer-data-modeling-visualization","title":"Senior Engineer - Data Modeling & Visualization","company":{"id":52949,"name":"Lengow","domain":"lengow.com","url":"https://alion.io/company/lengow","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Barcelona, Spain","Nantes, France"],"countries":["ES","FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":42000,"max_usd":85000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":20},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Airflow","optional":false},{"name":"Apache NiFi","optional":false},{"name":"dbt","optional":false},{"name":"ETL/ELT","optional":false},{"name":"GCP","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Looker","optional":false},{"name":"MariaDB","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Power BI","optional":false},{"name":"Pure Data","optional":false},{"name":"SQL","optional":false},{"name":"Talend","optional":false},{"name":"Linux","optional":true},{"name":"Windows","optional":true}],"status":"live","first_seen_at":"2026-10-21T14:28:24Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-11-04T00:51:47Z","board_verified":true,"closed_at":null,"days_open":13,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":13},"description":"Since 2009, Lengow has been the indispensable e-commerce platform for multi-channel expansion in the European market: marketplaces, price comparison websites, affiliate marketing, display ad retargeting, social media, etc.\nOur Data team\nJoin a dynamic Tech, Data & Product team of 50 professionals with diverse expertise. You’ll report to the Head of Data and work closely with our Tech, Product, and business teams.\nThe Data Team is a key driver of innovation at Lengow. From enabling access to insights for employees to creating custom data products for clients, our mission is to transform raw data into business impact. We’re expanding our scope and shaping the future of data at Lengow.\nWhat the Data team does\nEmpower business decisions with relevant insights and accessible data tools.\nGuide product development through data-driven features, metrics, and insights.\nManage and optimize custom data products for clients.\nEnhance our data stack and tools for scalability, reliability, and performance.\nCultivate a data-first culture by translating business needs into actionable insights.\nYour mission\nWe are seeking a Senior Engineer - Data Modeling & Visualization to strengthen the Data Team’s semantic modeling, metrics, and dashboarding capabilities.\nWith access to vast data - thousands of catalogs, millions of products, and billions of entries scraped from e-commerce websites - you’ll help transform complex data into reliable models, clear metrics, and useful dashboards for internal and customer-facing data products.\nThis role owns the Data Team’s semantic and visualization layer: business-facing data models, metric definitions, dashboards, validation rules, and documentation. You will work closely with the Product Manager, who owns Product-side framing, prioritization, stakeholder alignment, and business acceptance. Your role is to translate Product and business needs into reliable models, clear KPIs, useful dashboards, and maintainable data products.\nThis is a senior technical role at the intersection of analytics engineering, data modeling, and data visualization. It is not a Product Manager role or a pure Data Engineering role. It is also not focused on ad hoc reporting: requests should be turned into reusable, maintainable data assets whenever they create recurring value.\nYour key responsibilities:\nOwn the semantic and visualization layer of Lengow’s internal and customer-facing data products.\nDefine and document KPIs, dimensions, facts, grains, filters, assumptions, and business rules.\nDesign reusable analytical models and semantic layers across dashboards and data products.\nBuild and improve dashboards in Looker Studio that are clear, useful, performant, and decision-oriented.\nTransform Product and business requirements into modeled datasets, dashboard specifications, validation rules, and documentation.\nWrite advanced SQL transformations and contribute to dbt workflows.\nCollaborate with Senior Data Engineers on upstream data quality, data contracts, performance, reliability, and maintainability.\nChallenge unclear metric definitions, incomplete acceptance criteria, misleading visualizations, and one-off requests that should become reusable data products.\nCommunicate assumptions, limitations, edge cases, feasibility, risks, and trade-offs clearly to technical and non-technical stakeholders.\nRecruitment Process\nPre-interview: Chat with Alexandre, Head of People (30').\nTeam interview: Meet Sebastien (VP Data) and team members (60').\nFinal interview: Present a technical case to Sebastien and Olivier (Chief Product and Technology Officer) (60').\nRequirements\nWe’re looking for a senior data professional who combines technical rigor, strong data modeling skills, visualization expertise, and business understanding.\nYou should be able to understand a business question, challenge vague definitions, design the right analytical model, and deliver a dashboard or data product that can be trusted over time.\nHere’s what you bring to the table:\nExperience: 5+ years in analytics engineering, data visualization engineering, BI engineering, data engineering, or a similar data role.\nData modeling: strong understanding of facts, dimensions, grains, aggregations, metric definitions, semantic consistency, and business rules.\nData visualization: proven ability to design dashboards that are not only visually clear, but useful for real decisions.\nEngineering fluency: advanced SQL, strong analytical rigor, and good understanding of data quality, lineage, testing, and transformation workflows.\nCollaboration: ability to work with Product, business stakeholders, and Senior Data Engineers without becoming a substitute Product Manager or a support desk.\nMindset: autonomous, structured, constructive, and able to push back when definitions, requirements, or implementation choices are unclear or unsafe.\nTools & tech: experience with SQL, BigQuery, Google Cloud Platform, dbt, Airflow, Cube.js, Looker Studio, Power BI, MariaDB, and PostgreSQL. Familiarity with ETL/ELT tools such as Talend or Apache NiFi is a plus in our current context.\nWe value your ideas and welcome recommendations on tools, modeling practices, visualization standards, and data product quality.\nBonus points if you:\nKnow and are passionate about web, e-commerce, marketplaces, retail, SaaS, or product analytics.\nHave worked on customer-facing dashboards or data products.\nHave experience with semantic layers, metrics layers, or governed KPI frameworks.\nHave experience with data contracts or data quality frameworks.\nHave strong UX instincts for data products and dashboards.\nWhat success looks like\nSuccess will be evaluated through the quality, reliability, adoption, and maintainability of internal and customer-facing data products.\nExamples of successful outcomes include:\nCritical KPIs have clear definitions, grains, assumptions, and validation rules.\nDashboards are trusted, documented, actively used, and decision-oriented.\nDashboard logic is implemented in reusable modeled datasets instead of duplicated across reports.\nStakeholders understand metric behavior, limitations, and edge cases.\nProduct/Data collaboration with the Product Manager is structured and repeatable.\nBI assets meet agreed standards for readability, performance, maintainability, and business usefulness.\nTechnical environment\nOur environment includes SQL, BigQuery, Google Cloud Platform, Cube.js, dbt, Airflow, Looker Studio, Power BI, MariaDB, PostgreSQL, Talend, Apache NiFi, and internal and customer-facing analytics use cases.\nBenefits\nJoining Lengow is also an opportunity to benefit from many advantages :\nTicket restaurant 8 euros by day\nMalakoff Humanis Private insurance & Prevoyance.\n3 Remote days per week\nFlexible hours\nBike mileage allowances or 50% of transportation tickets.\nRemote allowances\nProfessional events (Devoxx, Meetup ...) and regular internal cohesion.\nWeekly Happy Break on Thursday Evening at the office with food and beverage\nSyntec forfait jours with RTT - 218 annual working days, ie minimum 9 days off on top of 5 weeks legal paid leave\nChoose your laptop OS. You can work on MacOS, Windows or Linux.","description_format":"text","description_chars":7146,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["E-commerce Platforms","Marketplaces","Supply Chain & Logistics Software"],"lifecycle":[{"event":"open","at":"2026-09-15T18:29:38Z"}],"visa":[],"liveness":{"score":77,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.851,"p_room":0.9,"age_days":12,"expected_fill_days":36,"reasons":["conf:0","win:mid"],"computed_at":"2026-11-03T05:54:40Z"},"pay":null,"html_url":"https://alion.io/job/lengow-senior-analytics-engineer-data-modeling-visualization","json_url":"https://alion.io/job/lengow-senior-analytics-engineer-data-modeling-visualization.json","meta":{"generated_at":"2026-11-04T05:44:54Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":8976,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-05T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":52949},"rest":"https://alion.io/mcp/rest/get_company?id=52949"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flengow-senior-analytics-engineer-data-modeling-visualization"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flengow-senior-analytics-engineer-data-modeling-visualization"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flengow-senior-analytics-engineer-data-modeling-visualization"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/lengow-senior-analytics-engineer-data-modeling-visualization\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flengow-senior-analytics-engineer-data-modeling-visualization"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":941420}},{"tool":"search_jobs","arguments":{"company":"lengow.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":941420},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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