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Data Engineer

**About us **
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lemlist is the sales engagement platform that gives sales teams the unfair advantage they deserve.

Bootstrapped since day one, we've grown from 0 to $57M ARR in 8 years, without raising a single dollar.

Today, we're a profitable B2B SaaS company, trusted by 40,000+ sales teams worldwide to book more meetings and close more deals.

We're looking for a Data engineer to join our team. You will help design, build and improve scalable data platform to provide data solution to our product.

Your main mission will be:
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* Work collaboratively with the product and business teams to build scalable and agile solutions.

* Define our technical standards and take an active part in the structuring data platform architecture decisions and data platform deployment based on data strategic product roadmap

* Develop, deploy, and manage highly efficient data platform and automated data pipelines using cloud-based and on-premise technologies.

* Design, maintain, and enhance key data product feature to ensure they are high-quality, certified, and easily accessible/integrable by enterprise users, components, and systems.

* Analyze and develop data operations and pipelines in line with enterprise guidelines and best practices (e.g., data quality processes, governance, and deep catalog/glossary curation).

* Continuously adapt to evolving requirements by maintaining and improving existing data pipelines integrating new features and change requests using an agile approach.

* Ensure data quality, lineage, versioning, and observability across the whole stack.

* Support CI/CD and release processes

**Key Results**
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*Within 3 months, you will have/be:*

* Successfully onboarded and integrated into the team.

* Onboarded our existing data platform end to end: sources, ingestion jobs, warehouse models, orchestration, BI layer, and who consumes what.

* Delivered a written audit of the current stack --- what works, what's fragile, what's redundant, what's undocumented --- with a severity ranking and estimated cost of each gap (reliability, cloud spend, engineering time, business risk).

* Shipped at least one visible quick win: a broken or unreliable pipeline fixed, a cost anomaly resolved, or a critical dataset made trustworthy.

* Turned the audit into an agreed technical roadmap: proposed target architecture, tech choices (warehouse, streaming, orchestration, transformation), and a migration path with trade-offs made explicit and validated with Product, Data and the C-suite.

* Improved our data engineering standards: repo structure, Git workflow, CI/CD for data, environments, code review, and deployment process. New pipelines follow them without needing to be told.

*Within 12 months, you will have:*

* Participated actively in the improvement of our data platform in order to scale with data volume and product growth without recurring firefighting, and cost per pipeline is understood and controlled.

* Cut incident volume and time-to-detect on critical datasets to a level where business teams trust the data by default.

* Put observability in place: freshness, volume and schema checks with real alerting on our critical datasets, plus documented SLAs and clear ownership.

* Unlocked new use cases the business couldn't previously ask for: proposed and shipped platform capabilities that opened up work in product analytics, in-product data features, or ML/AI enablement for the Data Scientist

* Become an additional reference on our data architecture --- the person the C-suite (CEO, CPO, CMO, Head of Sales) and Product consult before committing to decisions with a data dependency.

**What's in it for you?**
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* Work in a profitable, bootstrapped, and high-growth company that doesn't rely on external funding to live.

* Work on high-impact projects with highly skilled data profiles composed of a Senior Analytics Eng, a Senior Data Scientist and a Senior Data Engineer that directly drive business decisions

* Collaborate directly with the C-suite on strategic topics

* Work with a team obsessed with speed, growth, and impact.

**Preferred experience**
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***Must have:***

* Master's degree in computer science, distributed systems, data engineering, engineering or equivalent.

* 5+ years experience in intensive data platform in the context of Big Data and cloud infrastructures / platforms

* Strong background in Big Data architecture approaches and DBMS/Data Warehouse modelling, optimisation, and management.

* Deep knowledge of SQL, Python and Spark-related programming languages is a must.

* Experience with data warehouses and lakes (BigQuery, Snowflake, Databricks, Storage, Delta lake...).

* Extensive expertise in data preparation, integration, modelling, and governance processes.

* Proven experience in designing and managing end-to-end production ready solutions.

* Solid experience in developing, optimising and maintaining scalable data ingestion and transformation pipelines using modern data technologies - including streaming tools (Pub/Sub, Kafka).

* Familiarity with DataOps know-how: Git, Docker, CI/CD practices (Jenkins) and deployment workflows in a data engineering environment

* Experience in ensuring data quality, consistency and performance across data platforms, while applying data governance principles.

* Strong analytical mindset, with the ability to solve complex data challenges and continuously improve data solutions.

* Fast learner, High ownership, structure, and execution speed. Demonstrated ability to thrive in a demanding, fast-growing environment.

* Fluent in French and English.

***Nice to have:***

* Hands on experience on applicative database such as NoSQL DBMS, Search DBMS, OLAP DBMS

* You have a first experience in B2B SaaS

Additional information
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* Competitive salary and company bonus (up to 18K€ per year depending on company's performance)

* 38 days of holidays/year

* Alan Blue: Comprehensive 100% premium medical coverage for you and your family

* Swile Meal Tickets: Enjoy daily meal tickets to fuel productivity

* Navigo Card: Seamless commuting with a 100% covered Navigo card

* Gear: Get the laptop, tools, and equipment you need for your job

* Team building: We all meet once per year at really cool places around the world (check our video here)

**Recruitment process**
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1. Screen CV and interview with Lucas TAM

2. Interview with Eliott - Lead data \& Senior Data engineer

3. Live technical interview with Eliott

4. Interview with Mickael - CTO

5. Reference Check \& Offer

6. Interview with Charles CEO

D'autres ont aussi consulté

Data Engineer

Entreprise:
lemlist
Ville:
France
Type de contrat: 
Temps plein, CDI
Catégories du poste: 
Informatique, Ingénieur Data, Production, Recruteur, Commercial, Ingénieur Intégration, Architecte Big Data, Développeur Python, Développeur C#, Ingénieur Tuyauterie, Analyste Financier, Chief Technology Officer
Niveau d’études: 
Master
Publiée:
15.09.2026
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