Tiese Barrell
Consultant at group9 | Elite Java Development
s-Hertogenbosch Area Netherlands
Summary
👤
Senior🎓
Top SchoolTiese Barrell is a consultant and software engineer with 13 years’ experience designing and implementing BPM-driven process automation and systems integration, primarily using open-source Java frameworks like Activiti and Camunda. He combines a strong grounding in industrial engineering with hands-on backend development and architecture, taking solutions from requirements and BPMN/DMN modelling through to technical implementation and training. As an Activiti Designer committer and contributor to the core Activiti engine, he focuses on clarifying and hardening engine functionality and tooling—work that improves developer experience for a widely used open-source BPM platform. Colleagues rely on him as the linking pin between business experts and technical teams, able to acquire domain knowledge rapidly in new environments. He also designs and delivers training for both business and IT audiences, translating standards and frameworks into practical, adoptable practices.
13 years of coding experience
6 years of employment as a software developer
MSc., Industrial Engineering and Management Science, MSc., Industrial Engineering and Management Science at Eindhoven University of TechnologyGymnasium, Gymnasium at Stella Maris College
English, Dutch, German
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (12)
xml10
eclipse-plugin10
javas10
workflow-engine10
activiti10
bpmn10
business-process10
java10
spring9
spring-boot9
docker6
quarkus6
Programming languages (6)
Github contributions (5)
AlfrescoArchive/Activiti-Designer
Sep 2012 - Mar 2014
The Eclipse plugin for BPMN editing
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 commits in 1 year 6 months
Contributions summary:Tiese primarily worked on the core functionality of the Activiti Designer, focusing on BPMN parsing, model saving, and custom service task implementations. They addressed issues related to XML serialization and deserialization of custom task properties. The contributions include changes to the editor, parser, and various UI components, ensuring proper handling of custom service tasks and related properties. Furthermore, they refactored the export marshaller interface and added features for generating overlay information on process images.
camundabpmneclipse-pluginactivitieclipse
Activiti/Activiti
Nov 2012 - Jul 2016
Activiti is a light-weight workflow and Business Process Management (BPM) Platform targeted at business people, developers and system admins. Its core is a super-fast and rock-solid BPMN 2 process engine for Java. It's open-source and distributed under the Apache license. Activiti runs in any Java application, on a server, on a cluster or in the cloud. It integrates perfectly with Spring, it is extremely lightweight and based on simple concepts.
Role in this project:Back-end Developer
Back-end DeveloperContributions:27 commits, 1 PR in 3 years 8 months
Contributions summary:Tiese primarily focused on improving the Activiti engine's code base by addressing specific areas like documentation, and making modifications to existing functionality. They removed a debug message in a UI component, and added detailed documentation for a specific method within the RuntimeService class. Furthermore, the user updated documentation concerning the setting of process variables and adjusted its relevant references. This suggests a focus on refining and clarifying the engine's core features and documentation.
business-process-managementprocess-managementactivition-serverjava-application
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