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Data Engineer
Lemlist · Télétravail complet
Publiée le 15 septembre 2026
About us 👇🏼
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:
- 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
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?
- 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
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
- 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
- Screen CV and interview with Lucas TAM
- Interview with Eliott - Lead data & Senior Data engineer
- Live technical interview with Eliott
- Interview with Mickael - CTO
- Reference Check & Offer
- Interview with Charles CEO
Compétences
- coopérer avec des collègues
- informatique décisionnelle
- architecture de l’information
- Ă©nergies renouvelables
- base de données
- data ingineering
- SQL
- anglais
- administrer un système de gestion de bases de données relationnelles
- NoSQL
- exécuter des opérations d’entreposage
- informatique
- statistiques
- modélisation orientée services
- détecter les goulets d'étranglement
- outils de gestion de configuration logicielle
- systèmes de gestion de base de données
- traitement analytique en ligne
- migration
- méthodes de gestion de projets TIC
- avoir un esprit créatif
- Python (programmation informatique)
- Français
- consolidation d'Ă©quipe
- Jenkins (outils de gestion de configuration logicielle)
- Docker
- Intégration continue
Voir l'offre d'origine et postuler · Source : site carrières de Lemlist