{"id":1117151,"url":"https://alion.io/job/alten-data-engineer-big-data-hf-expert-gcp-kafka-spark-scala-cassandra","title":"Data Engineer / Big Data (H/F) – Expert GCP, Kafka, Spark, Scala, Cassandra","company":{"id":52934,"name":"ALTEN","domain":"alten.com","url":"https://alion.io/company/alten-com","size_band":"5000+","is_staffing_agency":true,"is_intermediary":false,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":77,"open_postings":37,"ghost_share":0,"stale_share":0.919,"repost_share":0,"time_to_fill_p50_days":29,"computed_at":"2026-09-23T05:45:00Z"}},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"hiring_geo_confidence":"structured","locations":["Boulogne-Billancourt, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":45000,"max":55000,"currency":"EUR","period":"year","gross":null,"usd_annual":63076},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Airflow","optional":false},{"name":"Apache Kafka","optional":false},{"name":"BigQuery","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Grafana","optional":false},{"name":"Kubernetes","optional":false},{"name":"Prometheus","optional":false},{"name":"pySpark","optional":false},{"name":"Python","optional":false},{"name":"Scala","optional":false},{"name":"Spark","optional":false}],"status":"live","first_seen_at":"2026-09-22T08:09:16Z","employer_posted_date":"2026-09-22","last_verified_at":"2026-09-23T09:25:15Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Rejoignez ALTEN, la “Maison des ingénieurs”...\nLeader 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.\nL’activité du Groupe s’articule autour de deux métiers : l’Ingénierie (Conception Produit & Manufacturing) et l’IT Services (Systèmes d’informations & Réseaux).\nAéronautique\nAutomobile\nBanque, Finance & Assurance\nDéfense & Sécurité\nEnergie & Environnement\nFerroviaire\nRetail & Services\nSciences de la vie - Santé\nSpatial\nTélécoms.\nNous 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.\nMissions principales :\nConcevoir, développer et maintenir des pipelines data robustes et scalables.\nTravailler sur des architectures distribuées (Kafka, Spark, Cassandra).\nOptimiser les traitements de données sur GCP (BigQuery, Dataflow, Dataproc, etc.).\nCollaborer avec les équipes Data Science et DevOps pour industrialiser les solutions.\nAssurer la performance, la fiabilité et la sécurité des infrastructures data.\n Expérience : Minimum 5 ans en tant que Data Engineer ou Big Data Engineer.\nCompétences techniques obligatoires :Maîtrise de GCP (Google Cloud Platform) et de ses services (BigQuery, Pub/Sub, Dataflow, etc.).\nExpérience confirmée avec Apache Kafka (streaming, connecteurs).\nExpertise en Spark (PySpark ou Scala) pour le traitement distribué.\nConnaissance approfondie de Scala ou Python pour le développement.\nExpérience avec Cassandra (modélisation, requêtes, optimisation).\n\nAtouts supplémentaires :Connaissance des outils de monitoring (Prometheus, Grafana).\nExpérience avec Airflow, Docker, ou Kubernetes.\nFamiliarité avec les bonnes pratiques DevOps (CI/CD, IaC).\n\n Soft skills :Esprit d’équipe, autonomie et capacité à résoudre des problèmes complexes.\nBonne communication pour collaborer avec les métiers et les équipes techniques.","description_format":"text","description_chars":2120,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"French","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Clinical Research","Biotechnology"],"lifecycle":[{"event":"open","at":"2026-09-22T16:46:13Z"}],"liveness":{"score":38,"band":"fade","label":"Fading","p_open":1,"p_active":0.379,"p_room":1,"age_days":0,"expected_fill_days":29,"reasons":["conf:4","agency","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-09-23T05:45:00Z"},"pay":{"stated_usd_annual":63076,"is_top_pay":false},"html_url":"https://alion.io/job/alten-data-engineer-big-data-hf-expert-gcp-kafka-spark-scala-cassandra","json_url":"https://alion.io/job/alten-data-engineer-big-data-hf-expert-gcp-kafka-spark-scala-cassandra.json","meta":{"generated_at":"2026-09-23T19:07:00Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}