Fullstack Senior Software Engineer - Dipl. Informatiker (FH)
Aktualisiert am 14.01.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 01.03.2025
Verfügbar zu: 100%
davon vor Ort: 100%
Java
Spring
SQL
Maven
Hibernate
GWT
PostgreSQL
Spring Boot
JEE
Jenkins
PL/SQL
Git
Java Swing
Docker
Vaadin
MySQL
Scrum
JSF
Oracle
Dart
PrimeFaces
JavaScript
Python
English
medial knowledge
German
fluent
Russian
mother-tongue

Einsatzorte

Einsatzorte

Köln (+50km) Bonn (+20km) Düsseldorf (+20km)
möglich

Projekte

Projekte

1 Jahr 9 Monate
2023-07 - 2025-03

virtual7

Senior Software Engineer avaEE (JSF/PrimeFaces EJB JPA/Hibernate) ...
Senior Software Engineer

Software architecture, development

- Worked on the RIKO project

- Maintained and extended a JEE/Spring based risk management

system with a JSF/PrimeFaces frontend and Oracle database

- Except for the daily business as bugfixing and different

requirements implementations this are the most interesting

parts on which i worked on:

? worked on the new powerful search architecture with

Elasticsearch involved

? migrated some EJB-Services to Spring

? migrated RIKO-Application from JBoss-EAP 7.4 to 8.0

together with Spring Boot from 2.7 to 3.3

- Supported developer and test colleagues

- Prepared Jenkins jobs

- Main used technics: JavaEE (JSF/PrimeFaces, EJB, JPA/Hibernate),

Spring Boot, REST-Services, Elasticsearch, Oracle DB,

Maven, Jenkins, Git, IntelliJ IDEA,

Oracle WebLogic JEE Server, JBoss-EAP 7.4, JBoss-EAP 8.0

avaEE (JSF/PrimeFaces EJB JPA/Hibernate) Spring Boot REST-Services Elasticsearch Oracle DB Maven Jenkins Git IntelliJ IDEA Oracle WebLogic JEE Server JBoss-EAP 7.4 JBoss-EAP 8.0
virtual7 GmbH
Hamburg
2 Jahre 6 Monate
2021-01 - 2023-06

GEBIT

Senior Software Engineer Java SQL PostgreSQL ...
Senior Software Engineer

Project for a DIY store

  • Worked on an ERP system project

  • Implemented requirements and bugfixes on an existing ERP system

  • The ERP system based on a proprietary framework (TREND-Framework), which was used to extend and create GUIs, implement the business logic and test it


Project for a food-retailer/discounter

  • Worked on a checkout/till and related backoffice system

  • Implemented requirements and bugfixes on an existing codebase based on a proprietary framework (TREND-Framework) and tools

  • Main topics were: analyse requirements and bugs, extend and design till process workflows, extend and design reports, extend and design REST and SOAP interfaces for data import/export, code refactoring, define and write integration and unit tests, documentation, release preparation

  • Worked on a Python script for documentation export from proprietary documentation system (TREND/Analyst) to Atlassian-Confluence

  • Supported developer and test colleagues

  • Participated in code reviews

  • Main used technics: Java, proprietary framework (MDA, workflow, persistence, communication, GUI), Maven, Jenkins, PostgreSQL, H2 Database, Git, Eclipse with proprietary framework related plugins, proprietary framework for integration tests (Integrity), proprietary reporting engine, OpenAPI plugin for contract first interface definition, WildFly Application Server

Eclipse IntelliJ Git PostgreSQL
Java SQL PostgreSQL WildFly Application Server JBoss Application Server Atlassian Confluence Atlassian JIRA Scrum Git Maven Jenkins Python
GEBIT Solutions GmbH
Remote-Arbeit 100%
1 Jahr 2 Monate
2019-11 - 2020-12

USU - DAC 6 project

Senior Software Engineer Java Spring Framework JSF ...
Senior Software Engineer
  • Worked on the DAC 6 project (DAC 6: EU tax disclosure rules)
  • Designed and implemented an Application based on Spring Batch Jobs to process tax arrangement data
  • Main topics were: technical sub-system design and documentation, generate large XML files (up to 100 MB) with JAXB, implement Oracle PL/SQL Procedures, Reporting SQL Views, different types of tests (Unit-Test; Integration-Tests; System-Tests; Stress-Tests)
  • Developed a WebApplication GUI with JSF/PrimeFaces with strict accessibility requirements especially for blind users
  • Supported developer colleagues
  • Supported test team
  • Participated in code reviews
Eclipse Git Atlassian Confluence Atlassian JIRA Oracle SQL Developer
Java Spring Framework JSF PrimeFaces Oracle/SQL
USU Software AG / Project for Informationstechnikzentrum Bund (ITZBund)
Bonn
7 Monate
2019-03 - 2019-09

Plusnet

Senior Software Engineer
Senior Software Engineer
  • Implemented a GUI for a telecommunication carrier incident management system with PHP Symfony-Webframework and JavaScript
  • Supported the backend team on Spring Boot microservices development
  • Designed an external order interface architektur
  • Implemented a GUI for a product configuration system with PHP Symfony-Webframework and JavaScript
Plusnet GmbH Cologne, Germany
4 Jahre 6 Monate
2014-09 - 2019-02

trimplement

Senior Software Engineer
Senior Software Engineer
  • Implemented CoreWallet payment gateway integrations for client-specific, local PSPs including corresponding payment method setup and routing
  • Implemented a Processing and Routing Engine for Payments
  • Implemented client-specific SPAs with Ember.js
  • Implemented an SBE test framework and an exhaustive suite of SBE tests for a large client project
  • Software engineer on the CoreWallet, balancr and CoreExchange products
  • Implemented a highly customizable Sport Event Android App
  • Integrated Google Maps and HERE Maps in Android
  • Introduced GPS-Tracking and Video Playback
  • Integrated Android Push-Notifications with Amazon Simple
    Notification Service (SNS)
trimplement GmbH Cologne, Germany
5 Monate
2014-04 - 2014-08

AXA

Senior Java Developer
Senior Java Developer
  • Developed on a Deployment/Release Management System
    (Tomcat/JBoss, GWT)
AXA Konzern AG Cologne, Germany
4 Jahre 6 Monate
2009-10 - 2014-03

QSC

Senior JEE Software Developer
Senior JEE Software Developer
  • Developed a Billing System which unified billing data from multiple legacy systems
  • Developed a CRM System
  • Developed several services and tools forTelecommunication typical scenarios (VPN-, Telephony-/Fax-, Telecommunication Port - Management Systems)
QSC AG Cologne, Germany
2 Jahre
2007-10 - 2009-09

Atos Origin

J2EE Software Developer
J2EE Software Developer
  • Developed Java Applet, Struts and MS Excel VBA Applications for a natural gas exchange platform
  • Developed a SOA sub system for message interchange with third-parties (TIBCO ESB, JMS, SOAP WebServices)
Atos Origin GmbH Cologne, Germany
2 Jahre
2005-10 - 2007-09

S4M

J2EE Software Developer
J2EE Software Developer
  • Developed a highly customizable Billing System for TV-Commercials in context of AdManagement/Sales System
  • Developed several Data Import/Export interfaces and tools
  • Developed several Data Migration PL/SQL Scripts
  • Developed several Report Data Collectors
S4M - Solution for Media GmbH, Cologne, Germany
10 Monate
2004-10 - 2005-07

mz robolab

.NET Software Developer (working student)
.NET Software Developer (working student)
  • Implemented a Industry Roboter Controlling Application on Windows Embedded CE device
mz robolab GmbH, Rheinbach, Germany
5 Monate
2002-10 - 2003-02

Ineas Versicherung

.NET Software Developer (working student)
.NET Software Developer (working student)
  • Implemented a Sync Web Tool to German Insurance Association (GDV)
Ineas Versicherung GmbH, Cologne, Germany

Aus- und Weiterbildung

Aus- und Weiterbildung

2000 - 2005

Fachhochschule Köln Campus Gummersbach

Allgemeine Informatik

Focus areas: Software Development and Artificial Intelligence (Artificial Neural Networks)
Side areas: Relational Databases, Network Technology, Operating Systems, Theoretical Computer Science, Mathematics, Physics

Diplom Informatiker (FH)

Position

Position

Senior Software Engineer

Kompetenzen

Kompetenzen

Top-Skills

Java Spring SQL Maven Hibernate GWT PostgreSQL Spring Boot JEE Jenkins PL/SQL Git Java Swing Docker Vaadin MySQL Scrum JSF Oracle Dart PrimeFaces JavaScript Python

Produkte / Standards / Erfahrungen / Methoden

Atlassian Confluence
Atlassian JIRA
Eclipse
Enterprise JavaBeans
Git
Java Application Server
JSF
Maven
PrimeFaces
Spring Framework

short profile

Eugen has been developing software for diverse companies and industries. While studying informatics he worked for an insurance company and for an industry roboter company. After his graduation and his prize-winning thesis in AI context he worked for a media corporation, a natural gas industry IT service contractor, a telecommunication company, an insurance company and a FinTech contractor. Since March 2019, he is working as a freelancer and supports his customers as a full-stack senior software engineer. Eugen is team-minded and reliable with a strong focus to deliver high-quality results.

TECHNICAL SKILLS

Java, SQL, PL/SQL, JavaScript, Groovy, C#, PHP, Python, [Dart, Ruby, Go]*,
Spring, Spring Boot, Spring Batch, JEE, JPA, Hibernate, Toplink/EclipseLink, PHP Symfony-Webframework,

JMS, REST, SOAP WebServices, TIBCO ESB, [Vert.x]*,

Android, JSF/PrimeFaces, Vue.js, Ember.js, GWT, JSP, Struts, Swing, Java-Applets, HTML, CSS, [Polymer-JS, Angular.js, Vaadin, ActionScript/Flex]*,

Oracle, MySQL/MariaDB, PostgreSQL, Sybase, 

MS SQL Server, H2, Redis,

Tomcat, JBoss AS, Glassfish,

Maven, Ant, Gradle,

Git, Subversion, Jenkins, Docker, Swagger, 

JUnit, Selenium, Mockito, JMeter,

IntelliJ IDEA, Eclipse, Android Studio, VS Code,

Google Maps on Android, HERE Maps on Android, Highcharts-JS, [WebRTC]*,

[marker for spare time experience level]*


Programmiersprachen

Java
Experte
JavaScript
Fortgeschritten
Oracle/SQL
Fortgeschritten
PL / SQL
Fortgeschritten
SQL
Experte

Datenbanken

MySQL
Fortgeschritten
Oracle
Fortgeschritten
PostgreSQL
Fortgeschritten
H2
Fortgeschritten

Einsatzorte

Einsatzorte

Köln (+50km) Bonn (+20km) Düsseldorf (+20km)
möglich

Projekte

Projekte

1 Jahr 9 Monate
2023-07 - 2025-03

virtual7

Senior Software Engineer avaEE (JSF/PrimeFaces EJB JPA/Hibernate) ...
Senior Software Engineer

Software architecture, development

- Worked on the RIKO project

- Maintained and extended a JEE/Spring based risk management

system with a JSF/PrimeFaces frontend and Oracle database

- Except for the daily business as bugfixing and different

requirements implementations this are the most interesting

parts on which i worked on:

? worked on the new powerful search architecture with

Elasticsearch involved

? migrated some EJB-Services to Spring

? migrated RIKO-Application from JBoss-EAP 7.4 to 8.0

together with Spring Boot from 2.7 to 3.3

- Supported developer and test colleagues

- Prepared Jenkins jobs

- Main used technics: JavaEE (JSF/PrimeFaces, EJB, JPA/Hibernate),

Spring Boot, REST-Services, Elasticsearch, Oracle DB,

Maven, Jenkins, Git, IntelliJ IDEA,

Oracle WebLogic JEE Server, JBoss-EAP 7.4, JBoss-EAP 8.0

avaEE (JSF/PrimeFaces EJB JPA/Hibernate) Spring Boot REST-Services Elasticsearch Oracle DB Maven Jenkins Git IntelliJ IDEA Oracle WebLogic JEE Server JBoss-EAP 7.4 JBoss-EAP 8.0
virtual7 GmbH
Hamburg
2 Jahre 6 Monate
2021-01 - 2023-06

GEBIT

Senior Software Engineer Java SQL PostgreSQL ...
Senior Software Engineer

Project for a DIY store

  • Worked on an ERP system project

  • Implemented requirements and bugfixes on an existing ERP system

  • The ERP system based on a proprietary framework (TREND-Framework), which was used to extend and create GUIs, implement the business logic and test it


Project for a food-retailer/discounter

  • Worked on a checkout/till and related backoffice system

  • Implemented requirements and bugfixes on an existing codebase based on a proprietary framework (TREND-Framework) and tools

  • Main topics were: analyse requirements and bugs, extend and design till process workflows, extend and design reports, extend and design REST and SOAP interfaces for data import/export, code refactoring, define and write integration and unit tests, documentation, release preparation

  • Worked on a Python script for documentation export from proprietary documentation system (TREND/Analyst) to Atlassian-Confluence

  • Supported developer and test colleagues

  • Participated in code reviews

  • Main used technics: Java, proprietary framework (MDA, workflow, persistence, communication, GUI), Maven, Jenkins, PostgreSQL, H2 Database, Git, Eclipse with proprietary framework related plugins, proprietary framework for integration tests (Integrity), proprietary reporting engine, OpenAPI plugin for contract first interface definition, WildFly Application Server

Eclipse IntelliJ Git PostgreSQL
Java SQL PostgreSQL WildFly Application Server JBoss Application Server Atlassian Confluence Atlassian JIRA Scrum Git Maven Jenkins Python
GEBIT Solutions GmbH
Remote-Arbeit 100%
1 Jahr 2 Monate
2019-11 - 2020-12

USU - DAC 6 project

Senior Software Engineer Java Spring Framework JSF ...
Senior Software Engineer
  • Worked on the DAC 6 project (DAC 6: EU tax disclosure rules)
  • Designed and implemented an Application based on Spring Batch Jobs to process tax arrangement data
  • Main topics were: technical sub-system design and documentation, generate large XML files (up to 100 MB) with JAXB, implement Oracle PL/SQL Procedures, Reporting SQL Views, different types of tests (Unit-Test; Integration-Tests; System-Tests; Stress-Tests)
  • Developed a WebApplication GUI with JSF/PrimeFaces with strict accessibility requirements especially for blind users
  • Supported developer colleagues
  • Supported test team
  • Participated in code reviews
Eclipse Git Atlassian Confluence Atlassian JIRA Oracle SQL Developer
Java Spring Framework JSF PrimeFaces Oracle/SQL
USU Software AG / Project for Informationstechnikzentrum Bund (ITZBund)
Bonn
7 Monate
2019-03 - 2019-09

Plusnet

Senior Software Engineer
Senior Software Engineer
  • Implemented a GUI for a telecommunication carrier incident management system with PHP Symfony-Webframework and JavaScript
  • Supported the backend team on Spring Boot microservices development
  • Designed an external order interface architektur
  • Implemented a GUI for a product configuration system with PHP Symfony-Webframework and JavaScript
Plusnet GmbH Cologne, Germany
4 Jahre 6 Monate
2014-09 - 2019-02

trimplement

Senior Software Engineer
Senior Software Engineer
  • Implemented CoreWallet payment gateway integrations for client-specific, local PSPs including corresponding payment method setup and routing
  • Implemented a Processing and Routing Engine for Payments
  • Implemented client-specific SPAs with Ember.js
  • Implemented an SBE test framework and an exhaustive suite of SBE tests for a large client project
  • Software engineer on the CoreWallet, balancr and CoreExchange products
  • Implemented a highly customizable Sport Event Android App
  • Integrated Google Maps and HERE Maps in Android
  • Introduced GPS-Tracking and Video Playback
  • Integrated Android Push-Notifications with Amazon Simple
    Notification Service (SNS)
trimplement GmbH Cologne, Germany
5 Monate
2014-04 - 2014-08

AXA

Senior Java Developer
Senior Java Developer
  • Developed on a Deployment/Release Management System
    (Tomcat/JBoss, GWT)
AXA Konzern AG Cologne, Germany
4 Jahre 6 Monate
2009-10 - 2014-03

QSC

Senior JEE Software Developer
Senior JEE Software Developer
  • Developed a Billing System which unified billing data from multiple legacy systems
  • Developed a CRM System
  • Developed several services and tools forTelecommunication typical scenarios (VPN-, Telephony-/Fax-, Telecommunication Port - Management Systems)
QSC AG Cologne, Germany
2 Jahre
2007-10 - 2009-09

Atos Origin

J2EE Software Developer
J2EE Software Developer
  • Developed Java Applet, Struts and MS Excel VBA Applications for a natural gas exchange platform
  • Developed a SOA sub system for message interchange with third-parties (TIBCO ESB, JMS, SOAP WebServices)
Atos Origin GmbH Cologne, Germany
2 Jahre
2005-10 - 2007-09

S4M

J2EE Software Developer
J2EE Software Developer
  • Developed a highly customizable Billing System for TV-Commercials in context of AdManagement/Sales System
  • Developed several Data Import/Export interfaces and tools
  • Developed several Data Migration PL/SQL Scripts
  • Developed several Report Data Collectors
S4M - Solution for Media GmbH, Cologne, Germany
10 Monate
2004-10 - 2005-07

mz robolab

.NET Software Developer (working student)
.NET Software Developer (working student)
  • Implemented a Industry Roboter Controlling Application on Windows Embedded CE device
mz robolab GmbH, Rheinbach, Germany
5 Monate
2002-10 - 2003-02

Ineas Versicherung

.NET Software Developer (working student)
.NET Software Developer (working student)
  • Implemented a Sync Web Tool to German Insurance Association (GDV)
Ineas Versicherung GmbH, Cologne, Germany

Aus- und Weiterbildung

Aus- und Weiterbildung

2000 - 2005

Fachhochschule Köln Campus Gummersbach

Allgemeine Informatik

Focus areas: Software Development and Artificial Intelligence (Artificial Neural Networks)
Side areas: Relational Databases, Network Technology, Operating Systems, Theoretical Computer Science, Mathematics, Physics

Diplom Informatiker (FH)

Position

Position

Senior Software Engineer

Kompetenzen

Kompetenzen

Top-Skills

Java Spring SQL Maven Hibernate GWT PostgreSQL Spring Boot JEE Jenkins PL/SQL Git Java Swing Docker Vaadin MySQL Scrum JSF Oracle Dart PrimeFaces JavaScript Python

Produkte / Standards / Erfahrungen / Methoden

Atlassian Confluence
Atlassian JIRA
Eclipse
Enterprise JavaBeans
Git
Java Application Server
JSF
Maven
PrimeFaces
Spring Framework

short profile

Eugen has been developing software for diverse companies and industries. While studying informatics he worked for an insurance company and for an industry roboter company. After his graduation and his prize-winning thesis in AI context he worked for a media corporation, a natural gas industry IT service contractor, a telecommunication company, an insurance company and a FinTech contractor. Since March 2019, he is working as a freelancer and supports his customers as a full-stack senior software engineer. Eugen is team-minded and reliable with a strong focus to deliver high-quality results.

TECHNICAL SKILLS

Java, SQL, PL/SQL, JavaScript, Groovy, C#, PHP, Python, [Dart, Ruby, Go]*,
Spring, Spring Boot, Spring Batch, JEE, JPA, Hibernate, Toplink/EclipseLink, PHP Symfony-Webframework,

JMS, REST, SOAP WebServices, TIBCO ESB, [Vert.x]*,

Android, JSF/PrimeFaces, Vue.js, Ember.js, GWT, JSP, Struts, Swing, Java-Applets, HTML, CSS, [Polymer-JS, Angular.js, Vaadin, ActionScript/Flex]*,

Oracle, MySQL/MariaDB, PostgreSQL, Sybase, 

MS SQL Server, H2, Redis,

Tomcat, JBoss AS, Glassfish,

Maven, Ant, Gradle,

Git, Subversion, Jenkins, Docker, Swagger, 

JUnit, Selenium, Mockito, JMeter,

IntelliJ IDEA, Eclipse, Android Studio, VS Code,

Google Maps on Android, HERE Maps on Android, Highcharts-JS, [WebRTC]*,

[marker for spare time experience level]*


Programmiersprachen

Java
Experte
JavaScript
Fortgeschritten
Oracle/SQL
Fortgeschritten
PL / SQL
Fortgeschritten
SQL
Experte

Datenbanken

MySQL
Fortgeschritten
Oracle
Fortgeschritten
PostgreSQL
Fortgeschritten
H2
Fortgeschritten

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