Orhan Keskin
Freelance Java Software Developer
Experience
Aug 2022 - Sep 2024
2 years 2 months Lorem ipsum dolor sit amet
kv.digital GmbH
- Backend development for appointment and doctor services, including implementing various requirements for managing doctor appointments.
- SCRUM/Kanban
- Java 21
- IntelliJ Idea
- SpringBoot (MVC, Data JPA, …)
- GIT
- Confluence
- JIRA
- Maven
- CI: Jenkins
- Docker
- ActiveMQ
- MariaDB
- Solr
- Liquibase
- Testcontainer
- JUnit5
- Mockito
May 2022 - Aug 2022
4 months Lorem ipsum dolor sit amet
Brenntag
- Development work and technical consulting on software for recipe order processing.
- Technical consulting and implementation of pricing software for chemical substances.
- Java 11
- IntelliJ Idea
- SpringBoot (MVC, Data JPA, …)
- GIT
- Maven
- Solr
- Vaadin
- MsSQL
- Docker
- Azure DevOps
Oct 2021 - Feb 2022
5 months Lorem ipsum dolor sit amet
Private project
- Private app development with Jetpack Compose to learn the Kotlin programming language.
Feb 2021 - Sep 2021
8 months Lorem ipsum dolor sit amet
kv.digital GmbH
- Development of the vaccination appointment service for kv.digital GmbH.
- Responsible for backend development of the vaccination appointment service, including implementing vaccination guidelines and managing vaccination appointments for doctors.
- SCRUM/Kanban
- Java 11
- IntelliJ Idea
- SpringBoot (MVC, Data JPA, …)
- GIT
- Confluence
- JIRA
- Maven
- CI: Jenkins
- Docker
- MariaDB
- Solr
- Liquibase
- JUnit5
- Mockito
Nov 2018 - Oct 2020
2 years Lorem ipsum dolor sit amet
Private solo development of a mobile game app
- Led and solo-developed a mobile game.
- Solely responsible for development and coordination of freelancers to obtain assets (graphics, sound, music, marketing).
- Used the LibGDX hybrid game framework for cross-platform development.
- Successfully launched the app on the Google Play Store and iOS App Store in November 2020.
Mar 2018 - Oct 2018
8 months Lorem ipsum dolor sit amet
Vaillant Group
- Development and implementation of microservices to manage and control remotely operated heating systems.
- Performing data analysis of specific events such as failures, malfunctions and power consumption.
- SCRUM
- Java 8
- IntelliJ Idea
- SpringBoot
- Microservices
- GIT
- JIRA
- Maven
- CI: Jenkins
- Docker
- MariaDB
- Kafka
- JUnit5
- Mockito
Mar 2017 - Aug 2017
6 months Lorem ipsum dolor sit amet
Bayer
- Development and implementation of backend microservices to control remotely operated heating systems.
- Analysis and evaluation of specific events such as failures, malfunctions and power consumption to optimize system performance.
- SCRUM
- Angular 2
- HTML 5
- CSS
- Java 8
- IntelliJ Idea
- SpringBoot
- GIT
- Maven
- CI: Jenkins
- MongoDB
- Solr
- JUnit5
- Mockito
Feb 2016 - Dec 2016
11 months Lorem ipsum dolor sit amet
thyssen krupp steel
- Development of a component for the manufacturing execution system in the warehouse management area.
- SCRUM
- Java 8
- Eclipse
- Hibernate
- GIT
- Maven
- CI: Jenkins
- Oracle
Summary
Thank you for your interest. My name is Orhan Keskin, born in 1976. I have been a passionate Java developer for over 24 years and have gained valuable experience in numerous projects. Since 2010, I have been working as a freelance Java software developer with a clear focus on backend development, especially with Spring Boot.
Skills
- Java 21
- Kotlin
- Spring Boot (Web, Data Jpa, Hibernate, Security, Rest, Ai…)
- Jsf
- Vaadin
- Angular
- Junit 5
- Mockito
- Assertj
- Restassured
- Testcontainers
- Jenkins
- Docker
- Activemq
- Git
- Maven
- Gradle
- Solr
- Jms
- Kafka
- Postgres
- Mariadb
- Mongodb
- Ldap
- Scrum
- Kanban
- Intellij Idea
- Jira
- Confluence
- Android Development With Kotlin And Jetpack Compose
- Mobile Game Development With Libgdx
Languages
English
AdvancedTurkish
AdvancedGerman
ElementaryEducation
Dortmund University of Applied Sciences and Arts
Diploma in Computer Science (FH) · Dortmund, Germany
Certifications & licenses
PMI – PMP Certified
Project Management Professional
SCJP Sun Certified Java Programmer
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