Hello, World!

My name is Jan P. Knöller and i am an experienced platform and app developer.

Java / Spring Boot

I build platforms and microservices with Java and Spring Boot.

AngularJS

I build frontends and apps with JavaScript and AngularJS.

SAPUI5 / Fiori

I build apps and custom libraries with SAPUI5 and Fiori.

Developer Training

I offer development training for Java, Spring Boot, Angular and SAPUI5.

Selected customer projects

I have successfully realized the following projects for clients as part of my freelance work. Please refer to my CV for the complete list.

Neptune Software AS

Oslo, Norway
https://www.neptune-software.com/
Ui5Bootstrap
Jun 21 - Jun 22
Aug 23 - Oct 23
  • Integration of the Bootstrap framework as a custom library in SAPUI5
  • Implementation of SAPUI5 Custom Controls for Bootstrap components
  • Automatic SAPUI5 theme generation based on Bootstrap SASS
Technologies: SAPUI5, Bootstrap, Javascript, HTML5, CSS, SASS, LESS, Node.js, Grunt
Nepionic
Jun 21 - Jun 22
  • Integration of the IONIC framework as a custom library in SAPUI5
  • Implementation of SAPUI5 Custom Controls for IONIC components
Technologies: SAPUI5, IONIC, Javascript, HTML5, CSS, SASS, LESS, Node.js, Grunt

ETAS GmbH

Bochum, Germany
https://etas.com/
Etas PKI
Aug 22 - Jun 23
  • Analysis of the existing PKI solution for the purpose of creating a training document for subsequent developers
  • Development of a concept for authentication and authorization of microservices via OAuth2 based on Keycloak
Technologies: Spring Boot, Java, Certificates, PKI, Amazon AWS, GitLab, Docker, Kubernetes, Keycloak, OAuth2

SAP SE

Walldorf, Germany
https://sap.com/
SAP Events
Jul 17 - May 20
  • Planning and implementation of a solution for the administration of events, as well as the registration and authentication of participants
  • Connection of the solution to numerous existing SAP systems
  • Development of a solution for recording participants' product interests for further processing in other SAP systems
  • Development of an app for all mobile devices
Technologies: Spring Boot, Java, SAPUI5, SAP Cloud, Javascript, HTML5, CSS, Git, Maven
SAP Equestrian
Nov 12 - Mar 16
  • Planning and implementation of a solution for real-time recording and evaluation of spectator ratings in equestrian sports
  • Development of the backend for SAP Cloud, which is capable of capturing tens of thousands of ratings simultaneously
  • Development of an app for all mobile devices
Technologies: Spring Boot, Java, SAPUI5, SAP Cloud, Javascript, HTML5, CSS, Git, Maven

Skills

I have good to very good knowledge of the following technologies.
  • Spring Boot
  • Java
  • AngularJS
  • IONIC
  • JavaScript
  • SAPUI5
  • SASS / CSS
  • HTML5
  • Thymeleaf
  • JPA / Hibernate
  • PostgreSQL
  • Keycloak
  • OAuth
  • RabbitMQ
  • Node.js
  • D3.js

Own Projects

MakerMaker
Agile Website and App Builder made for Makers.
Technologies: Java, Spring Boot, JPA, JavaScript, AngularJS, SAPUI5
MakerMakerPi
Raspberry Pi application to control the Pi from MakerMaker websites and apps.
Technologies: Raspberry-Pi, Python, Node.js, Electron.js, FeatureHub
Metaphone
Fully functional virtual smartphone for games, VR and mixed reality.
Technologies: Unity 3D, C#, FeatureHub, OpenSCAD, Game Design
Machine Blocks
Free SCAD library for 3D printing LEGO® compatible bricks and enclosures.
Technologies: OpenSCAD, 3D Printing, Raspberry Pi, NodeJS, FeatureHub

Contact

Jan Philipp Knöller
Clarissa-Kupferberg-Platz 15
55118 Mainz
pk@pksoftware.de
01512 / 1460042