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The enterprise workhorse that refuses to quit. For data engineering, Java is a powerhouse for building robust, scalable systems like custom ETL pipelines, distributed frameworks (hello, Hadoop), and real-time processing engines like Kafka Streams. Its JVM ecosystem and libraries (e.g., Apache Spark, Flink) make it a cornerstone for high-performance data applications where reliability matters.
That said, Java’s verbosity can feel like writing a novel for every task, and its boilerplate-heavy style makes simple things unnecessarily painful. While its performance is solid and memory management reliable, it lacks the modern elegance of languages like Go or Python. Plus, debugging messy stack traces from poorly tuned JVMs is no picnic.
Java thrives in large-scale, structured environments where maintainability and backward compatibility are king. It’s not the coolest language at the party, but when your data stack needs to scale like a Fortune 500 company, Java delivers—with plenty of paperwork.

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analyst

Data Analyst H/F @ smile

FR | 2025-12-27
Smile advertises a Data Analyst role embedded in a European open-source powerhouse of 1,800 people across nine countries. The core duties read like a complete data lifecycle: extract, clean, and... read more »
KPI, Cloud Computing, ETL/ELT, Big Data, Spark, Hadoop, AWS, Azure, GCP, Kubernetes, Docker, BI, DataViz, Power BI, Tableau, SQL, Python, Java, Scala, R, API, CI/CD, ELK, Management
analyst

Intern - Quality Assurance Automation Engineer - F/M @ sap

FR | 2025-12-26
SAP’s 6-month Paris internship asks a QA Automation Engineer to dive into SAP Analytics Cloud, collaborate in Scrum squads, and shape end-to-end test strategies for UI and API layers using Jasmine... read more »
SAP, Analytics, Cloud Computing, Agile/Scrum, API, Selenium, CI/CD, LLM, Computer Science, Java, JavaScript, TypeScript, React, Git, GitHub, Jenkins, Docker, Kubernetes, AI/ML, BI, SaaS, ERP, Management
promoted

BigQuery Cost Optimization Guide by Masthead Data

The BigQuery Cost Optimization Guide is a valuable resource that offers a deep dive into understanding and managing the complexities of BigQuery costs. It provides practical guidelines and strategies to help you optimize both storage and compute expenses, ensuring you get the most value out of...

analyst

Stage Logiciel : Développement d'un outil d'extraction, d'analyse et de visualisation de données F/H @ mbda

FR | 2025-12-26
MBDA’s student/alternance role reads like a grounded data tooling internship rather than a buzzword-filled data science job. You’ll build a graphical tool to search, extract, and analyze... read more »
Word, DataViz, KPI, Python, Java, C, XML, R
analyst

Intern - Ingénieur.e Assurance Qualité & Automatisation - F/H @ sap

FR | 2025-12-25
Six-month internship at SAP Paris as QA and Automation Engineer. You join Scrum teams to master SAP Analytics Cloud, align with delivery workflows, analyze functional needs, and design/execute... read more »
SAP, Analytics, Cloud Computing, Agile/Scrum, API, Selenium, CI/CD, LLM, Java, JavaScript, TypeScript, React, Git, GitHub, Jenkins, Docker, Kubernetes, AI/ML, BI, ERP