Simon Zambrovski
Senior Consultant at Zanneta GmbH
Hamburg, Germany
Summary
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Rockstar🎓
Top SchoolSimon Zambrovski is a Senior Consultant and BPM-focused software engineer with 13+ years building event-driven microservices, enterprise systems and workflow automation solutions from Hamburg. He blends domain-driven design, CQRS and event sourcing expertise with hands-on Java and Kotlin development, coaching and architecture work, often using Camunda and Axon in production. As a frequent open-source contributor he has improved core projects like Camunda BPM and Axon Framework—adding CMMN diagram support, JSON type handling and refined event upcasting—which reflects deep knowledge of event processing internals. Founder of Zanneta and long-term consultant at Holisticon AG, he pairs entrepreneurial initiative with practical delivery across long-running client engagements. Colleagues describe him as a “BPM craftsman” and “Event Sourcerer,” an engineer who also brings process modeling and DevOps sensibilities to make distributed systems observable and resilient.
13 years of coding experience
18 years of employment as a software developer
Dipl. Ing Computer Engineer, Dipl. Ing Computer Engineer at Hamburg University of Technology
German, English, Russian
Stackoverflow
756reputation
155kreached
30answers
3questions
Github Skills (28)
cqrs10
data-serialization10
event-sourcing10
java10
serialization10
javas10
dependency-injection10
domain-driven-design10
spring-boot9
bpmn9
junit9
mockito9
message-driven9
json8
testing8
Programming languages (14)
Github contributions (5)
camunda/camunda-bpm-platform
Nov 2014 - Nov 2022
Camunda 7 CE is End of Life (EoL). Please check out Camunda 8 instead (https://github.com/camunda/camunda) or read about Camunda 7 Enterprise End of Life (https://camunda.com/blog/2025/02/camunda-7-enterprise-end-of-life-extension/) – Camunda 7 CE was a flexible framework for workflow and decision automation using BPMN and DMN.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 4 commits, 2 PRs in 8 years 2 months
Contributions summary:Simon primarily focused on enhancing the Camunda BPM platform's functionality. Their contributions include adding diagram resources to CMMN deployments, enabling the association of diagram images with CMMN definitions. They also worked on providing type detection for Set and Map in JSON processing using Jackson, and added the `taskId` and `taskIdIn` parameters to `TaskQueryDto`. Additionally, the user implemented configurations for Spring Eventing, enabling skippable event listener behavior.
automationbpmncamundadmncamunda-bpm-platform
AxonIQ/AxonFramework
Jul 2017 - Oct 2020
Framework for Evolutionary Message-Driven Microservices on the JVM
Role in this project:Back-end Developer
Back-end DeveloperContributions:43 reviews, 9 commits, 26 PRs in 3 years 4 months
Contributions summary:Simon primarily contributed to the Axon Framework, focusing on enhancing the serialization and upcasting capabilities of the event handling system. Their work involved implementing and refining intermediate representations for event upcasting, including the introduction of methods to identify data conversion capabilities. They also addressed specific issues related to serializer access and parameter types, improving the framework's flexibility and data handling. These changes indicate a focus on core event processing and data transformation within the framework.
jvmmessage-drivenmicroservicesjavacqrs
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