Karsten Jasper-WordPress Development
Check rate
Experience
WordPress Development
martens+puller Ingenieurgesellschaft mbH
- Migration, maintenance and further development of the WordPress portal martens-puller.de
- PHP, HTML, CSS
WordPress Development
Stiftung Orte der deutschen Demokratiegeschichte
- Maintenance and further development of the WordPress portal demokratie-geschichte.de
- PHP, HTML, CSS
WordPress Development
Ideengut – Agentur für Kommunikation
- Technical maintenance and optimization of the WordPress portal LeadersAcademy.com
- PHP, HTML, CSS
Website redesign consulting
SPD-Fraktion im deutschen Bundestag
- Development of a rough concept for a new website together with stakeholders from the SPD parliamentary group in the German Bundestag as a basis for the tendering of the implementation
IT consulting, project and product management for iKiosk
Schweitzer Fachinformationen OHG
- Design, product development, specification and implementation of external interfaces and integrations of B2B partner systems into the iKiosk, e.g., Deutsche Bahn and Airbus/Bundeswehr/Marine
- Hosting and operation of the platforms
- Requirements management, project leadership and pair programming with the external developer
- 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 diverse data sources, creation of SQL queries to analyze the data
Technical Project Manager and Product Owner iKiosk
Axel Springer SE
- Coordination of the external service provider/general contractor using an agile approach, establishment and continuous optimization of a Scrum process
- Project controlling and contract negotiations
- Extensive alignments with internal departments and stakeholders within the corporate group
- Product management, coordination and contribution to the conception, design, and UX development of mobile Android and iOS apps as well as the eCommerce portal ikiosk.de
- Prioritization of user stories, development of roadmaps, planning of backlog and sprints
- Requirements management
- Conception, specification, and management of the implementation of external interfaces and integrations with B2B partner systems, e.g. Deutsche Bahn and the German Armed Forces
- Support and further development of the reporting tool
Project management for Windows 8.1 tablet & phone apps
DIE WELT
- Management of external and internal service providers
- Coordination and support for conception, design, and UX
- QA management
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
- Planning of backlog and sprints and development of a roadmap according to the team vision
- Stakeholder and design team management
- Technical consulting
Project Manager, Requirements Manager
Sevenval GmbH (vorm. YOC AG)
- Project management and conception for various iPhone apps, mobile portals, and web apps
- Client communication and requirements management
- Creation of wireframes and support for graphic design and QA
- 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
IT Architect & Team Lead
Stayfriends GmbH
- Creation of software architectures and technical concepts as enhancements of the existing portal software
- Support of implementation and deployment
- Team leadership
Software Architect, Requirements Manager
T-Mobile International AG, Deutsche Telekom AG
- Technical design and architecture for an end-to-end solution between mobile devices and backend
- Specification of a REST API for social network functionality
- Analysis of third-party solutions
- Requirements management
Project Manager, Scrum Master, and Software Architect
neofonie Technologieentwicklung und Informationsmanagement GmbH
- WAZ - DerWesten.de: Technical design, architecture, and project management for an event search function; design of data formats, system architecture, redesign of search functionality, frontend and backend
- iScout (Scout24.de): Led the reimplementation of the Scout24 homepage based on configurable widgets
- Travelscout24: Technical design, architecture, and project management for a meta-search function; import and integration of external partners, data formats, system architecture, redesign of search functionality, frontend and backend
- local24.de: Technical design, architecture, and project management for the search and spider backend; import and crawling of large feeds, automatic enrichment of classified ads, providing full-text search and administration as SOAP web services
- Jobs.de: Technical design, architecture, and project management; crawling over 1 million company websites, automatic detection of job ads using SVM, providing a web frontend full-text search
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Media and Entertainment, Government and Administration, Advertising, Professional Services, and Telecommunication.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Project Management, and Quality Assurance.
Skills
- Agile Project Management, (Technical) Project Leadership
- Product Owner, Requirements Management
- Consulting, Concept Development, Specification
- Wordpress Development, Php
- Web And Mobile Portals, Ecommerce, Ios & Android Apps
Languages
Education
TU Berlin
Diploma in Computer Science · Computer Science · Berlin, Germany
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Karsten is based in Berlin, Germany.
Karsten speaks the following languages: English (Advanced), German (Elementary).
Karsten has at least 20 years of experience. During this time, Karsten has worked in at least 10 different roles and for 12 different companies. The average length of individual experience is 2 years and 8 months. Note that Karsten may not have shared all experience and actually has more experience.
Based on recent experience, Karsten would be well-suited for roles such as: WordPress Development, Website redesign consulting, IT consulting, project and product management for iKiosk.
Karsten's most recent position is WordPress Development at martens+puller Ingenieurgesellschaft mbH.
In recent years, Karsten has worked for martens+puller Ingenieurgesellschaft mbH, Stiftung Orte der deutschen Demokratiegeschichte, Ideengut – Agentur für Kommunikation, SPD-Fraktion im deutschen Bundestag, and Schweitzer Fachinformationen OHG.
Karsten is most experienced in industries like Information Technology, Media and Entertainment, and Government and Administration. Karsten also has some experience in Advertising, Professional Services, and Telecommunication.
Karsten is most experienced in business areas like Information Technology, Product Development, and Project Management. Karsten also has some experience in Quality Assurance.
Karsten has recently worked in industries like Information Technology, Government and Administration, and Advertising.
Karsten has recently worked in business areas like Information Technology, Product Development, and Project Management.
Karsten holds a Master in Computer Science from TU Berlin.
Karsten has 1 certificate: Certified Scrum Master.
The availability of Karsten needs to be confirmed.
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Average rates for similar positions
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Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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