Sebastian Kielhorn
SAPUI5 / SAP Fiori Expert - SAP Fullstack Developer - SAP AI Enthusiast - SAP CAP/RAP Developer
Experience
Sep 2022 - Mar 2025
2 years 7 monthsSaarbrücken, Germany
Support and enhancement of an SAPUI5 application for customer and order management
Telecommunications industry
- Bug fixing and functional enhancement of an existing SAPUI5 application
- Adaptation to Fiori Design Guidelines and ensuring accessibility
- Implementation of missing features in frontend and backend
- Technical support for the go-live process and handling first- and second-level support
Mar 2022 - Jul 2022
5 monthsHamburg, Germany
Support in SAPUI5 / SAP Fiori across multiple client projects
CGI
Upgrading several SAPUI5 applications to a higher UI5 version following Fiori Design Guidelines
Analyzing, refactoring, and restructuring existing code to improve quality and maintainability
Designing and implementing a complex frontend application for process handling
Developing extension and routing concepts and implementing numerous requirements
Advising colleagues on interface and service development and taking on tasks in service development
Dec 2021 - Present
3 years 8 monthsDevelopment of modern SAPUI5 applications in the SAP RE-FX module
Ascavo AG
- Consulting on infrastructure and backend development
- Full frontend development following Fiori Design Guidelines
- Creating tailored SAP-based IT solutions for the real estate industry
Nov 2020 - Jan 2021
3 monthsHamburg, Germany
New development of the automation control for brewery systems
Wildwuchs Brauwerk
- Developing new control software with TwinCAT (Beckhoff) considering existing hardware
- Connecting the software to valves, pumps, and sensors and commissioning the systems
Jun 2020 - Jun 2021
1 year 1 monthWalldorf, Germany
Product development in Cloud Security – service development for central authorization and access control
SAP
- Developing a central authorization control service on the Cloud Foundry platform
- Implementing a compile server (Java), a management server (Go), and a frontend component (SAPUI5)
- Main responsibility for UI/UX development and SAPUI5 implementation
- Creating automated UI tests and setting up a continuous integration pipeline
Aug 2019 - Dec 2019
5 monthsWalldorf, Germany
Enhancement of an SAPUI5 application for risk management on an SAP BW system
SAP
- Frontend development in SAPUI5 and test automation (QUnit, OPA5)
- Collaborating on the backend and quickly learning complex business and technical requirements
- Agile implementation in the Innovative Business Solution team
Jul 2019 - Present
6 years 1 monthFreelance consultant in SAPUI5 / SAP Fiori and SAP Fullstack development
Self-employed
- Consulting and development in SAPUI5 / SAP Fiori
- SAP fullstack development
Mar 2019 - Jun 2019
4 monthsHamburg, Germany
Cloud strategy in the SAP domain – PoC implementation on the Cloud Foundry
Consumer goods and retail
- Developing a sample implementation for analyzing receipts using node.js and Python
- Using machine learning services on SAP Cloud Platform – Cloud Foundry
- Consulting throughout the advisory and implementation process
Aug 2018 - Jun 2019
11 monthsFrankfurt, Germany
Support and enhancement of an application for processing return orders
Automotive industry
- Full-stack development of a returns process application with SAPUI5, Fiori, OData, and ABAP OO
- Automating SD orders and quality notifications in SAP ERP
- Functional project lead
Jun 2017 - Jul 2018
1 year 2 monthsHamburg, Germany
Development of SAPUI5 applications for billing notifications and port fees
Transport and logistics
- Implementing applications for billing inland shipping charges and port fees
- Implementing an order-to-cash process in SAP ERP and Fiori-compliant UI development
- Functional sub-project lead
Dec 2016 - Mar 2017
4 monthsFreiburg im Breisgau, Germany
Integration of Confluence search via REST API into an SAP Enterprise Portal
Manufacturing industry
- Extending the existing SAP portal with Confluence search via REST API
- Integrating personalization, filtering, and paging into the portal search
Oct 2016 - Dec 2017
1 year 3 monthsHamburg, Germany
Implementation of a web portal for inland vessels on the SAP Cloud Platform
Transport and logistics
- Developing an SAP Cloud Platform–based web portal for registering inland vessels
- Consulting, design, implementation, testing, and support as a full-stack developer
- Training end users and developers
Jan 2016 - Mar 2017
1 year 3 monthsFreiburg im Breisgau, Germany
Migration of an SAP Enterprise Portal 7.0 with FirstSpirit integration to 7.4
Manufacturing industry
- Second-level support for SAP Enterprise Portal and FirstSpirit CMS
- Planning and executing the migration from 7.0 to 7.4
- Adapting portal components for the new system
Feb 2015 - Dec 2015
11 monthsKarlsruhe, Germany
Introduction of an intranet portal based on SAP Enterprise Portal
Agribusiness
- Designing, implementing, testing, and maintaining an employee portal
- Setting up and administering the portal and CMS
- Developing portal applications in Java and SAPUI5
Sep 2014 - Jan 2015
5 monthsHamburg, Germany
PoC extension of a monitoring application with SAPUI5
Retail
- Evaluating and extending a proof of concept for a monitoring application
- Frontend development in SAPUI5 and implementation of a Java web service
- Training an IT service provider employee
Apr 2014 - Aug 2014
5 monthsKassel, Germany
Introduction of a customer portal as a Fiori Launchpad with SAP Enterprise Portal
Agribusiness
- Designing, implementing, and rolling out a customer portal based on SAP NetWeaver Enterprise Portal
- Developing Fiori Launchpad apps, configuring SSO, and developing OData services
Oct 2013 - Mar 2014
6 monthsHamburg, Germany
Evaluation of a document management system
Energy supply
- Comparing a .NET meeting management application with OpenText Livelink
- Creating a decision template and migrating customized functionalities
Sep 2013 - Jun 2019
5 years 10 monthsSAP Consultant
Acando GmbH
Mar 2013 - Aug 2013
6 monthsBachelor’s thesis student
Acando GmbH
- Writing a bachelor’s thesis on “Application development with Oracle APEX”
- Extending a rewards accounting system with a mobile component
Jun 2010 - Dec 2012
2 years 7 monthsHamburg, Germany
Working student – Process Improvement FAL A380
Airbus Operations GmbH
- Developing reporting applications with WebFocus, iMacros, and VBA
- Supporting logistics processes in the Final Assembly Line A380
Languages
German
NativeEnglish
Advanced Education
Oct 2008 - Aug 2013
University of Applied Sciences Wedel
Bachelor of Science, Business Informatics · Wedel, Germany
Finkenwerder High School
Abitur · Hamburg, Germany
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