Karsten J. - Project Management, Scrum Master, Product Owner, WordPress Development, IT Consulting

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Berlin, Germany

Experience

Apr 2025 - Present

9 months

Remote

WordPress Development

martens+puller Ingenieurgesellschaft mbH

Migration, maintenance and further development of the WordPress portal martens-puller.de
development with PHP, HTML and CSS

Feb 2024 - Present

1 year 11 months

Remote

WordPress Development

Stiftung Orte der deutschen Demokratiegeschichte

maintenance and further development of the WordPress portal demokratie-geschichte.de
development with PHP, HTML and CSS

Jan 2024 - Present

2 years

Remote

WordPress Development

Ideengut – Agentur für Kommunikation

technical maintenance and optimization of the WordPress portal LeadersAcademy.com
technologies: PHP, HTML, CSS

Oct 2021 - Feb 2022

5 months

Consulting for Website Redesign

SPD-Fraktion im deutschen Bundestag

developed a rough concept for a new website with stakeholders of the SPD parliamentary group in the German Bundestag
created the basis for the implementation tender

May 2020 - Present

5 years 8 months

Remote

IT Consulting, Project and Product Management iKiosk

Schweitzer Fachinformationen OHG

design, product development, specification and implementation of external interfaces and connections of B2B partner systems to the iKiosk (including Deutsche Bahn, Airbus, Bundeswehr, Marine)
hosting and operation of the platforms
requirements management, project management, and pair programming with external developers
provision, maintenance and continuous improvement of the reporting tool
preparation of monthly financial statements for the iKiosk and analysis of sales data
integration and aggregation of various data sources
creation of SQL queries for data analysis

Sep 2014 - Apr 2020

5 years 8 months

Berlin, Germany

On-site

Technical Project Manager and Product Owner iKiosk

Axel Springer SE

Coordination of external service providers/general contractors using an agile approach
Establishment and optimization of a Scrum process
Project controlling and contract negotiations
Coordination with internal departments and stakeholders
Product management and oversight of concept, design, and UX development for mobile Android and iOS apps as well as the eCommerce portal ikiosk.de
Prioritization of user stories, roadmap development, backlog and sprint planning
Requirements management
Design, specification and management of the implementation of external interfaces and connections to B2B partner systems (including Deutsche Bahn, Bundeswehr)
Maintenance and further development of the reporting tool

Jul 2014 - Feb 2015

8 months

Project Management Windows 8.1 Tablet & Phone Apps

DIE WELT

Management of external and internal service providers
Coordination and support for concept, design and UX
Oversight of quality assurance

Mar 2013 - Jun 2014

1 year 4 months

Product Owner, Interim CTO Celepedia

Room 49 GmbH (Axel Springer ideAS)

Definition of requirements for the agile development team using Kanban and Scrum in Jira tickets
Formulation of user stories and acceptance criteria
Backlog and sprint planning and development of a roadmap in line with the team vision
Stakeholder and design team management
Technical consulting

Aug 2010 - Dec 2012

2 years 5 months

Project Manager, Requirements Manager

Sevenval GmbH

Project management and concept development for various iPhone apps, mobile portals and web apps
Client communication
Requirements management
Creation of wireframes
Support for graphic design development and quality assurance
Management of development by subcontractors
Clients include: Austrian Airlines, Werben & Verkaufen, e wie einfach, Bunte, Milka, Federal Association of German Banks, Baur Versand, Messe Frankfurt, Cosmos Direkt

Jan 2010 - Jun 2010

6 months

IT Architect & Team Lead

Stayfriends GmbH

Creation of software architectures and technical concepts to further develop the existing portal software
Support for implementation and deployment
Team leadership

Jan 2009 - Sep 2009

9 months

Bonn, Germany

Software Architect, Requirements Manager

T-Mobile International AG, Deutsche Telekom AG

Technical concept and architecture for an end-to-end solution between mobile devices and the backend
Specification of a REST API for social networking functionality
Analysis of third-party solutions
Requirements management

Jul 2005 - Dec 2008

3 years 6 months

Project Manager, Scrum Master and Software Architect

neofonie Technologieentwicklung und Informationsmanagement GmbH

Technical concept and architecture for various projects
WAZ - DerWesten.de: Project management for an event search feature; data format design, system architecture, redesign of search functionality in frontend and backend
iScout (Scout24.de): Lead role in re-implementing the Scout24 homepage using configurable widgets
Travelscout24: Concept, architecture and project management for a meta-search feature; importing and integrating external partners, data format design, system architecture, redesign of search functionality in frontend and backend
local24.de: Design and project management for search and spider backend; importing and crawling large feeds, automatic enrichment of classifieds, providing full-text search and administration as SOAP web services
Jobs.de: Concept, architecture and project management; crawling over 1 million company websites, automatic detection of job postings using machine learning (Support Vector Machines), delivery in a web frontend for full-text search