Data Engineer / Big Data (H/F) – Expert GCP, Kafka, Spark, Scala, Cassandra

ALTEN • French: C1 • Clinical Research • Biotechnology • Python • Scala • 1 day ago
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Salary
$51k – $63k per year
Location
In office (Boulogne-Billancourt)
Seniority
Senior · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Sep 23, 2026. First seen by Alion on Sep 22, 2026. ALTEN scores B on the Alion truth index.

Overview
Company
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Profile match

ALTEN

ALTEN is a French engineering and technology consultancy founded in 1988 that supplies project engineers to companies developing complex products and systems. Its consultants work inside client organisations across automotive, aerospace, defence, rail, energy, telecommunications, life sciences and finance, covering embedded software, mechanical and electrical design, simulation, testing, certification and information systems. Listed on Euronext Paris and headquartered in Boulogne-Billancourt, the group employs tens of thousands of engineers across more than thirty countries and has grown through a long sequence of acquisitions of specialist engineering firms.
alten.com • HQ: Boulogne-Billancourt, France • Quality Assurance • Electrical & Electronic Engineering • Automotive Manufacturing • Simulation & Digital Twin • Embedded Software • Mechanical Components • Space & Aerospace • Software • Professional Services • Manufacturing • Engineering Services • IT Outsourcing • IT Consulting • Science & Engineering • Information Technology • Hardware • 5000+ employees • Est. 1988

Rejoignez ALTEN, la “Maison des ingénieurs”...

Leader de l’Ingénierie et des Entreprise IT Services, ALTEN regroupe près de 57 000 collaborateurs, dont 88% d’ingénieurs. Présent dans plus de 30 pays, le Groupe accompagne la stratégie de développement de ses clients dans les domaines de l’innovation, de la R & D et des systèmes d'information technologiques.

L’activité du Groupe s’articule autour de deux métiers : l’Ingénierie (Conception Produit & Manufacturing) et l’IT Services (Systèmes d’informations & Réseaux).

Aéronautique

  • Automobile
  • Banque, Finance & Assurance
  • Défense & Sécurité
  • Energie & Environnement
  • Ferroviaire
  • Retail & Services
  • Sciences de la vie - Santé
  • Spatial
  • Télécoms.

Nous recherchons un(e) Data Engineer passionné(e) par le Big Data et les architectures distribuées pour concevoir, optimiser et déployer des solutions data à grande échelle.

Missions principales :

  • Concevoir, développer et maintenir des pipelines data robustes et scalables.
  • Travailler sur des architectures distribuées (Kafka, Spark, Cassandra).
  • Optimiser les traitements de données sur GCP (BigQuery, Dataflow, Dataproc, etc.).
  • Collaborer avec les équipes Data Science et DevOps pour industrialiser les solutions.
  • Assurer la performance, la fiabilité et la sécurité des infrastructures data.

Expérience : Minimum 5 ans en tant que Data Engineer ou Big Data Engineer.

  • Compétences techniques obligatoires :
    • Maîtrise de GCP (Google Cloud Platform) et de ses services (BigQuery, Pub/Sub, Dataflow, etc.).
    • Expérience confirmée avec Apache Kafka (streaming, connecteurs).
    • Expertise en Spark (PySpark ou Scala) pour le traitement distribué.
    • Connaissance approfondie de Scala ou Python pour le développement.
    • Expérience avec Cassandra (modélisation, requêtes, optimisation).
  • Atouts supplémentaires :
    • Connaissance des outils de monitoring (Prometheus, Grafana).
    • Expérience avec Airflow, Docker, ou Kubernetes.
    • Familiarité avec les bonnes pratiques DevOps (CI/CD, IaC).
  • Soft skills :
    • Esprit d’équipe, autonomie et capacité à résoudre des problèmes complexes.
    • Bonne communication pour collaborer avec les métiers et les équipes techniques.
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