Backend-Engineer & Web-Developer im Java Enterprise Bereich
Aktualisiert am 25.11.2024
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 05.01.2025
Verfügbar zu: 100%
davon vor Ort: 10%
Java
Spring Boot
Azure
Microservices
Elastic Search
Kafka
PostgreSQL
SQL
Performanceoptimierung
GitLab
Angular
React
REST
Terraform

Einsatzorte

Einsatzorte

Cologne (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 years 3 months
2021-10 - 2024-12

Further development of a microservice-based middleware application used by various network operators as a web portal to manage their daily operations

Java Backend/Middleware Developer Java Spring Framework JPA ...
Java Backend/Middleware Developer

  • Integration and synchronization of external systems via REST APIs / SAPJco / Kafka
  • Design and implementation of a microservice for construction site planning in the role of lead developer
  • Enhancement of an existing microservice for managing users and permissions
  • Further development and bug fixing of a microservice for handling orders and billing
  • Design and implementation of internal communication using Kafka
  • Optimization and enhancement of synchronization between various SAP systems and the middleware application
  • Further development and migration of multiple databases, along with the provision of new REST APIs for the portal
  • Integration of Elasticsearch and migration of various APIs for performance optimization

Java Spring Framework JPA Elasticsearch Hibernate Search Kafka flyway Splunk New Relic MS Azure Kubernetes Argo CD Terraform GitLab CI/CD SAP JCo Maven Junit (4/5) Hamcrest Docker PostgreSQL Scrum Kotlin
Remote
1 year
2021-02 - 2022-01

Development and rollout of a platform for research and opinion polling

Fullstack Developer (Java / Angular / VueJs / Python) Java Spring REST ...
Fullstack Developer (Java / Angular / VueJs / Python)
  • Conception and implementation of a microservice architecture
  • Development of Spring Boot application for configuring and monitoring software bots that automatically collect data from social networks, store it in a structured format, and make it available via REST APIs, along with a corresponding Angular frontend
  • Further development of a Python backend system for processing the collected data using machine learning methods and exposing it via REST APIs, as well as a corresponding Vue.js frontend for visual representation
Java Spring REST HTML5 Vue.js CSS3/SCSS JavaScript Docker PostgreSQL MongoDB Python Scikit-learn Pandas NumPy Angular TypeScript
Remote
4 months
2021-09 - 2021-12

Plugin Development for integrating a diagram and drawing tool into the Haiilo intranet platform

Java Backend Developer Java Kafka Quarkus ...
Java Backend Developer
  • Building backend services from scratch (microservice architecture), including
    • implementing business logic around the lifecycle of plugin instances
    • Integration of Plugin APIs (Haiilo)
    • Integration of Draw.io APIs
    • Software architecture, database modeling and implementation of REST interfaces for the plugin frontend (react) 
    • DevOps task including implementation and configuration of CI/CD pipelines and Kubernetes infrastructure

Java Kafka Quarkus REST HTML5 CSS3/SCSS JavaScript ReactJS Docker Kubernetes Bitbucket Pipelines MongoDB PostgreSQL
Cologne
3 months
2021-08 - 2021-10

Plugin Development for integrating external media into the Haiilo intranet platform

Java Backend Developer Java Spring REST ...
Java Backend Developer

  • Building the backend service from scratch, including
    • implementing business logic around the lifecycle of plugin instances
    • Integration of Plugin APIs (Haiilo)
    • Integration of Contentflow APIs
    • Database modeling and implementation of REST interfaces for the plugin frontend (react) 
  • Implementation and configuration of CI/CD pipelines

Java Spring REST HTML5 CSS3/SCSS JavaScript ReactJS Docker Bitbucket Pipelines
Cologne
1 year
2020-08 - 2021-07

Rollout and further development of an intranet portal

Fullstack Developer (Java / Angular) Java Spring Boot REST ...
Fullstack Developer (Java / Angular)
  • Implementation of complex custom components and numerous interfaces to external systems 
  • Database modeling and migrations
  • Migration from AngularJS to Angular
Java Spring Boot REST HTML5 CSS3 JS Bootstrap Angular AngularJS Elasticsearch PostgreSQL Docker Gitlab flyway
Cologne
6 months
2019-10 - 2020-03

Automation of booking processes / Robotic Process Automation / Aviation

Java Developer Java Spring Framework Selenium ...
Java Developer
  • Implementation of business logic with Java
  • Modeling business processes using BPMN
Java Spring Framework Selenium BPMN
Cologne
2 years 6 months
2017-10 - 2020-03

Product development (Robotic Process Automation)

Java Backend Developer Java Spring Framework Vaadin ...
Java Backend Developer

  • Further development of an RPA (Robotic Process Automation) product for automating business processes.

  • The product is a distributed system, consisting of software bots operated within customer networks. These bots are centrally managed via a server component over the internet.

  • Responsibilities

    • Enhancing core functionality

      • Development of backend tasks like automated generation of statistics from processes within the customer environment or recording of user actions and automated translation into executable business processes

      • Further development of the user interface for controlling and analyzing the software bots (Vaadin)

    • creating tutorials and learning materials

    • evaluating new technologies for the product (like Camunda CMMN)

Java Spring Framework Vaadin Selenium t-Plan robot sikulix BPMN CMMN Scrum
Cologne
2 years
2017-10 - 2019-09

Automation of administrative processes / Robotic Process Automation / Telecommunication

Java Developer Java Spring Selenium ...
Java Developer

  • Implementation of business logic with Java
  • Regular Deployments, operation, and troubleshooting
  • Modeling business processes using BPMN


Java Spring Selenium t-Plan robot sikulix BPMN
Bonn

Position

Position

  • Java Backend Developer / Middleware Developer / Lead Developer
  • Entwicklung einer Middleware Anwendung zur Baustellenplanung bei einer E.ON Konzerntochter

Kompetenzen

Kompetenzen

Top-Skills

Java Spring Boot Azure Microservices Elastic Search Kafka PostgreSQL SQL Performanceoptimierung GitLab Angular React REST Terraform

Programmiersprachen

Java
Experte
Spring Framework
Experte
Microservices
Experte
Kafka
Experte
Microsoft Azure
Experte
SQL
Experte
Elastic Search
Experte
React
Fortgeschritten

Branchen

Branchen

  1. Energiebranche
  2. Telekommunikation
  3. Luftfahrt
  4. Gesundheit/Plege
  5. Öffentliche Hand
  6. IT-Software

Einsatzorte

Einsatzorte

Cologne (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 years 3 months
2021-10 - 2024-12

Further development of a microservice-based middleware application used by various network operators as a web portal to manage their daily operations

Java Backend/Middleware Developer Java Spring Framework JPA ...
Java Backend/Middleware Developer

  • Integration and synchronization of external systems via REST APIs / SAPJco / Kafka
  • Design and implementation of a microservice for construction site planning in the role of lead developer
  • Enhancement of an existing microservice for managing users and permissions
  • Further development and bug fixing of a microservice for handling orders and billing
  • Design and implementation of internal communication using Kafka
  • Optimization and enhancement of synchronization between various SAP systems and the middleware application
  • Further development and migration of multiple databases, along with the provision of new REST APIs for the portal
  • Integration of Elasticsearch and migration of various APIs for performance optimization

Java Spring Framework JPA Elasticsearch Hibernate Search Kafka flyway Splunk New Relic MS Azure Kubernetes Argo CD Terraform GitLab CI/CD SAP JCo Maven Junit (4/5) Hamcrest Docker PostgreSQL Scrum Kotlin
Remote
1 year
2021-02 - 2022-01

Development and rollout of a platform for research and opinion polling

Fullstack Developer (Java / Angular / VueJs / Python) Java Spring REST ...
Fullstack Developer (Java / Angular / VueJs / Python)
  • Conception and implementation of a microservice architecture
  • Development of Spring Boot application for configuring and monitoring software bots that automatically collect data from social networks, store it in a structured format, and make it available via REST APIs, along with a corresponding Angular frontend
  • Further development of a Python backend system for processing the collected data using machine learning methods and exposing it via REST APIs, as well as a corresponding Vue.js frontend for visual representation
Java Spring REST HTML5 Vue.js CSS3/SCSS JavaScript Docker PostgreSQL MongoDB Python Scikit-learn Pandas NumPy Angular TypeScript
Remote
4 months
2021-09 - 2021-12

Plugin Development for integrating a diagram and drawing tool into the Haiilo intranet platform

Java Backend Developer Java Kafka Quarkus ...
Java Backend Developer
  • Building backend services from scratch (microservice architecture), including
    • implementing business logic around the lifecycle of plugin instances
    • Integration of Plugin APIs (Haiilo)
    • Integration of Draw.io APIs
    • Software architecture, database modeling and implementation of REST interfaces for the plugin frontend (react) 
    • DevOps task including implementation and configuration of CI/CD pipelines and Kubernetes infrastructure

Java Kafka Quarkus REST HTML5 CSS3/SCSS JavaScript ReactJS Docker Kubernetes Bitbucket Pipelines MongoDB PostgreSQL
Cologne
3 months
2021-08 - 2021-10

Plugin Development for integrating external media into the Haiilo intranet platform

Java Backend Developer Java Spring REST ...
Java Backend Developer

  • Building the backend service from scratch, including
    • implementing business logic around the lifecycle of plugin instances
    • Integration of Plugin APIs (Haiilo)
    • Integration of Contentflow APIs
    • Database modeling and implementation of REST interfaces for the plugin frontend (react) 
  • Implementation and configuration of CI/CD pipelines

Java Spring REST HTML5 CSS3/SCSS JavaScript ReactJS Docker Bitbucket Pipelines
Cologne
1 year
2020-08 - 2021-07

Rollout and further development of an intranet portal

Fullstack Developer (Java / Angular) Java Spring Boot REST ...
Fullstack Developer (Java / Angular)
  • Implementation of complex custom components and numerous interfaces to external systems 
  • Database modeling and migrations
  • Migration from AngularJS to Angular
Java Spring Boot REST HTML5 CSS3 JS Bootstrap Angular AngularJS Elasticsearch PostgreSQL Docker Gitlab flyway
Cologne
6 months
2019-10 - 2020-03

Automation of booking processes / Robotic Process Automation / Aviation

Java Developer Java Spring Framework Selenium ...
Java Developer
  • Implementation of business logic with Java
  • Modeling business processes using BPMN
Java Spring Framework Selenium BPMN
Cologne
2 years 6 months
2017-10 - 2020-03

Product development (Robotic Process Automation)

Java Backend Developer Java Spring Framework Vaadin ...
Java Backend Developer

  • Further development of an RPA (Robotic Process Automation) product for automating business processes.

  • The product is a distributed system, consisting of software bots operated within customer networks. These bots are centrally managed via a server component over the internet.

  • Responsibilities

    • Enhancing core functionality

      • Development of backend tasks like automated generation of statistics from processes within the customer environment or recording of user actions and automated translation into executable business processes

      • Further development of the user interface for controlling and analyzing the software bots (Vaadin)

    • creating tutorials and learning materials

    • evaluating new technologies for the product (like Camunda CMMN)

Java Spring Framework Vaadin Selenium t-Plan robot sikulix BPMN CMMN Scrum
Cologne
2 years
2017-10 - 2019-09

Automation of administrative processes / Robotic Process Automation / Telecommunication

Java Developer Java Spring Selenium ...
Java Developer

  • Implementation of business logic with Java
  • Regular Deployments, operation, and troubleshooting
  • Modeling business processes using BPMN


Java Spring Selenium t-Plan robot sikulix BPMN
Bonn

Position

Position

  • Java Backend Developer / Middleware Developer / Lead Developer
  • Entwicklung einer Middleware Anwendung zur Baustellenplanung bei einer E.ON Konzerntochter

Kompetenzen

Kompetenzen

Top-Skills

Java Spring Boot Azure Microservices Elastic Search Kafka PostgreSQL SQL Performanceoptimierung GitLab Angular React REST Terraform

Programmiersprachen

Java
Experte
Spring Framework
Experte
Microservices
Experte
Kafka
Experte
Microsoft Azure
Experte
SQL
Experte
Elastic Search
Experte
React
Fortgeschritten

Branchen

Branchen

  1. Energiebranche
  2. Telekommunikation
  3. Luftfahrt
  4. Gesundheit/Plege
  5. Öffentliche Hand
  6. IT-Software

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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