Jacqueline Haefke

Q: Where is Jacqueline based?

Jacqueline is based in Düsseldorf, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Jacqueline speak?

Jacqueline speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Jacqueline have?

Jacqueline has at least 10 years of experience. During this time, Jacqueline has worked and for 7 different companies . The average length of individual experience is 1 year and 5 months . Note that Jacqueline may not have shared all experience and actually has more experience.

Q: What companies has Jacqueline worked for in recent years?

In recent years, Jacqueline has worked for Kitchen Appliance Manufacturer .

Q: Which industries is Jacqueline most experienced in?

Jacqueline is most experienced in industries like Manufacturing , Insurance , and Information Technology (IT) . Jacqueline also has some experience in Banking and Finance .

Q: Which business areas is Jacqueline most experienced in?

Jacqueline is most experienced in business areas like Information Technology (IT) , Business Intelligence , and Quality Assurance (QA) . Jacqueline also has some experience in Product Development .

Q: Which industries has Jacqueline worked in recently?

Jacqueline has recently worked in industries like Manufacturing .

Q: Which business areas has Jacqueline worked in recently?

Jacqueline has recently worked in business areas like Business Intelligence and Information Technology (IT) .

Q: Does Jacqueline have any certificates?

Jacqueline has 4 certificates . Among them, these include: Agile Coach , Certified Scrum Master , and Certified Scrum Product Owner .

Q: What is the availability of Jacqueline?

Jacqueline will be available full-time from March 2026 .

Recommended expert

Düsseldorf, Germany

Experience

Feb 2021 - Present

5 years 1 month

Kitchen Appliance Manufacturer

Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks

Sep 2020 - Jan 2021

5 months

Occupational Accident Insurance Associations, Statutory Health Insurance (GKV), Adcubum

Carrying out various smaller projects, including setting up and supporting monitoring with Grafana
Advising on creating Helm charts and supporting OpenShift with Kafka
Revising the DDD design of an application
Responsibilities: Architecture, DevOps, coaching employees, POC implementation
Technologies and methods: Java, Kotlin, Spring Boot, SOAP/REST, JPA, jQuery, JavaScript, CSS, Jira, Confluence, IntelliJ, Eclipse, GitLab, Helm, Terraform, Ansible, gRPC

Jan 2019 - Aug 2020

1 year 8 months

Insurance – ERGO

Implementing numerous interfaces in the Migration Leben Klassik project
Setting up and improving monitoring with Grafana, Prometheus, and Confluent Control Center
Introducing EFK logging
Designing and implementing voice solutions (Alexa, Google Actions, Phone/Call Center) integrated with Genesys gRPC microservices
Implementing business requirements using Angular 6/7 and Spring Boot (Java 8)
Adjusting and extending the Jenkins pipeline
Evaluating infrastructure-as-code benefits, integrating Sonar for code quality, and adding pentest integration into pipelines
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees, smoke and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java 8/11, Kotlin, Node.js, Spring Boot, SOAP/REST, JPA, Angular 7, Vaadin, Jira, Confluence, HPQC, IntelliJ, Kafka, Camunda BPMN, GitHub, Groovy, AWS, Docker, Kubernetes, OpenShift, Terraform, Gradle, Jenkins, gRPC

May 2017 - Dec 2018

1 year 8 months

Insurance – DEVK

Architecture review with improvement suggestions for SCS/microservice performance
Performance analysis and optimization using AppDynamics, JProbe, JConsole, tcpdump, QueryAnalyzer
Implementing business requirements with Spring Boot and Java 8
Adjusting and extending Ansible for VM provisioning and Jenkins pipelines
Optimizing Jenkins jobs using JobDSL
Introducing Sonar to improve code quality and test automation
Implementing GitLab and evaluating GitLab CI
Responsibilities: Development, unit tests, coaching employees, smoke and integration tests, agile methods consulting (Scrum)
Technologies and methods: Java 8, Kotlin, Spring Boot, SOAP/REST, JPA, jQuery, JavaScript, CSS, Jira, Confluence, HPQC, IntelliJ, Eclipse, SVN, GitLab, Python

Oct 2016 - Apr 2017

7 months

Metro Systems

Designing a microservice PaaS architecture to automate internal infrastructure
Creating multiple microservice prototypes with Go and Python
Initial setup of a CI environment with Jenkins, JobDSL, and Docker
Responsibilities: Coaching employees, implementing an API framework
Technologies and methods: Postman, Jira, Confluence, IntelliJ, Gogland, GitLab, REST, ELK, Cassandra, Docker, Docker Compose, Kubernetes, jQuery, CSI/ESI, Python, Consul, etcd, Neo4j, Go

May 2016 - Sep 2016

5 months

meinestadt.de

Complete redesign of the job board portal into a microservice architecture with Spring Boot and Angular 2
Replaced the Oracle database with Solr and MongoDB
Created user story maps, roadmaps, and split epics into user stories
Set up Jenkins 2 with pipelines and JobDSL
Implemented REST services (Edit service)
Responsibilities: Introduced agile methods (Scrum), coached Product Owners and Scrum Masters, implementation
Technologies and methods: Spring Boot, Spring Batch, Spring Data, Zookeeper, Maven, Jira, Confluence, IntelliJ, GitLab, SOA/REST, Solr, Zookeeper, MongoDB

Jan 2016 - Mar 2016

3 months

DWP Bank

Implemented the decentralized HVEK pilot with Camunda BPMN
Digitized the main ticket order form
Improved architecture by implementing an ESB connector for runtime route adjustments
Optimized performance by adapting routes based on load
Responsibilities: Competence Center DWP, coached team members, backend implementation
Technologies and methods: JUnit, Mockito, Pax Exam, JBoss Fuse, OSGi, ActiveMQ, MQ Series, Java 7/8, JEE, IntelliJ, Eclipse, Maven, Git (Bitbucket), SOA/REST, Jenkins, Oracle SQL Server, Camunda BPMN, Drools, Jira, WPTicket

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Manufacturing (5 years), Insurance (3.5 years), and Information Technology (1.5 years).

Manufacturing

Insurance

Information Technology

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (10 years), Business Intelligence (5 years), Quality Assurance (1.5 years), and Product Development (0.5 years).

Information Technology

Business Intelligence

Quality Assurance

Product Development

Summary

I am a seasoned professional with extensive experience in software architecture, development, and DevOps. I have designed and evolved international subscription systems and led migrations, integrations, and improvements across various technologies. My background spans the insurance, banking, and media industries, where I delivered robust, scalable solutions using Java, Kotlin, Spring Boot, and cloud infrastructures such as AWS and Kubernetes.

I excel in setting up monitoring with Grafana and Prometheus, enhancing CI/CD pipelines, and coaching teams to apply agile methods effectively. I continuously strive to streamline processes and improve code quality, leveraging tools like Terraform, Jenkins, and Databricks to drive impactful results.

Skills

Insurance
Banking
Telecommunications
Ecommerce
Retail
Business Analysis
Devops
Requirements Engineering
Bpmn Modeling
Certified Scrum Master
Certified Scrum Product Owner
Agile Coach
Software Architecture (Isaqb)
Software Development
Microservice Modeling
Domain Driven Design
Uml
Design Patterns
Mda
Testing: Bdd
Unit Testing (Junit/testng)
Performance Testing
Selenium
Programming: Java (Jsp, Swing, Jdbc, Jndi, J2ee, Rmi)
Thymeleaf
Angular
Groovy
Kotlin
Xml/xslt
Sql
Html/dhtml
Javascript
Jquery
Perl
Php
Less/sass
Grunt
Gulp
Jasmine
Go (Golang)
Python/pyspark
Node.js
Grpc
Frameworks/apis: Databricks
Zuora
Vaadin
Wicket
Spring/spring Boot/spring Mvc
Struts
Ajax
Jsf
Aspectj
Log4j
Xerces
Axis/cxf/jax-ws
Jbpm
Camunda Bpmn
Jboss Rules
Drools
Jax
Jaxb
Json
Jasperreports (Ireport)
Birt
Apache Camel
Neo4j
Zookeeper
Osgi
Google Web Toolkit (Gwt)
Alexa
Google Actions
Modeling: Plantuml
Rsa
Magicdraw
Poseidon
Mid Innovator
Middleware: Kafka
Rabbitmq
Sqs
Activemq
Consul
Ejb
Mqseries
Devops/cloud: Gitlab Ci
Argo Cd
Github
Jenkins Ci
Maven
Gradle
Openshift/kubernetes
Aws
Grafana
Consul
Terraform
Ansible
Databases: Dynamodb
Mongodb
Db2
Oracle
Mysql
Postgresql
Ms-sql
Solr
Cassandra
Elasticsearch
Ides: Intellij Idea
Eclipse
Myeclipse
Rad/rsad/wsad
Orm Mappers: Jpa
Hibernate
Eclipselink
Jalo
Avantis Unisuite
Vcs: Git (Bitbucket/gitlab/github)
Svn (Subversion)
Test Tools: Playwright
Cucumber
Selenium
Mercury Winrunner
Badboy
Rational Robot

Languages

German

Native

English

Advanced

Certifications & licenses

Agile Coach

Certified Scrum Master

Certified Scrum Product Owner

Software Architecture (iSAQB)

Profile

Created

February 2026

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Do you have questions? Here you can find further information.

Where is Jacqueline based?

Jacqueline is based in Düsseldorf, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Jacqueline speak?

Jacqueline speaks the following languages: German (Native), English (Advanced).

How many years of experience does Jacqueline have?

Jacqueline has at least 10 years of experience. During this time, Jacqueline has worked and for 7 different companies. The average length of individual experience is 1 year and 5 months. Note that Jacqueline may not have shared all experience and actually has more experience.

What companies has Jacqueline worked for in recent years?

In recent years, Jacqueline has worked for Kitchen Appliance Manufacturer.

Which industries is Jacqueline most experienced in?

Jacqueline is most experienced in industries like Manufacturing, Insurance, and Information Technology (IT). Jacqueline also has some experience in Banking and Finance.

Which business areas is Jacqueline most experienced in?

Jacqueline is most experienced in business areas like Information Technology (IT), Business Intelligence, and Quality Assurance (QA). Jacqueline also has some experience in Product Development.

Which industries has Jacqueline worked in recently?

Jacqueline has recently worked in industries like Manufacturing.

Which business areas has Jacqueline worked in recently?

Jacqueline has recently worked in business areas like Business Intelligence and Information Technology (IT).

Does Jacqueline have any certificates?

Jacqueline has 4 certificates. Among them, these include: Agile Coach, Certified Scrum Master, and Certified Scrum Product Owner.

What is the availability of Jacqueline?

Jacqueline will be available full-time from March 2026.

What is the rate of Jacqueline?

Jacqueline's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.