Internship: Exploring Real-Time Data Processing at Scale

Location: Pully, Switzerland

Start date: February 2027 · Duration: 6 months
Please include your latest academic transcripts with your application. Applications submitted without transcripts will not be considered.

In this 6-month internship starting in February 2027, you will explore real-time data processing at scale with Apache Kafka, Apache Flink and Apache Spark, and help us define guidelines for choosing the right framework.

Your tasks

• Understand the fundamental concepts of Kafka, Flink and Spark, including their architecture and use cases
• Implement a pipeline processing streaming data from a single source using Kafka and Flink/Spark, going as far as possible with insights and optimizations
• Build a second, more complex pipeline: Database → Debezium → Kafka → Flink/Spark → transactional and analytical queries
• Handle multiple tables and implement watermarking to ensure synchronized data processing
• Compare Flink and Spark on performance, ease of use and suitability for specific use cases
• Document your findings and propose guidelines for choosing between the two frameworks

What we offer

• A dynamic, collaborative workplace with a highly motivated, multicultural team working across international sites
• The chance to make a difference in people's lives by building innovative solutions
• Internal coding events such as Hackathons and Brownbag sessions, plus our technical blog
• Monthly After-Works organized at each location

About your profile

• Bachelor's or Master's student in Computer Science, Data Engineering or a related field
• Interest in distributed systems and real-time data processing
• Programming skills (e.g. Java, Scala or Python) and knowledge of SQL
• Curiosity, autonomy and good analytical skills

About Us

We are ELCA, one of the largest Swiss IT tribe with over 2,200 experts. We are multicultural with offices in Switzerland, Spain, France, Vietnam and Mauritius. Since 1968, ELCA has been shaping Switzerland’s digital transformation. We provide tailor-made and standardized solutions to public and private organizations across all industries, leveraging our expertise in AI, cloud, and cybersecurity.