Timeline

Until 2005: Information systems

• Design data models, build databases, portals

• Tourism: Fares and rates

• Stock exchange information system: Shares

• Global dealer network: Portfolio

• Meta level: Data dictionaries, repositories

java ejb jms rdbms liferay groovy

Since 2005: ETL & Reporting

• Streaming, integration

• Near real-time streaming: Event-based streaming from DB2 to Essbase OLAP

etl streaming

Since 2010: Scala

• Extend the object-oriented way with functional programming

• Online shop, E-Commerce

scala functional-programming

Since 2015: Big Data & Kafka

• Focus on back end
• Stopped “full stack development”

hadoop apache-spark apache-kafka

Since 2016: Distributed Computing

actor akka

Since 2018: IoT

home-automation

Since 2019: Cloud

cloud

2021

apache-kafka-streams kubernetes machine-learning data-science

gis openlayers

2022

apache-flink influxdb grafana openshift rancher exasol

2023

spark-3

Tech stack

➜ Tech stack & top skills