Martin W.-Experienced Product Owner for Innovative Technology Solutions
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Experience
Product Owner UX/Software/App Development
Landkreis Hameln-Pyrmont
Responsible for the strategic and operational coordination of app development for the Hameln-Pyrmont district
- Development and implementation of the digitalization strategy for citizen-focused mobile services and the optimization of internal administrative processes
- Requirement Engineering: Systematic collection of complex administrative requirements and conversion into structured user stories
- Stakeholder management: Coordination between specialist departments, citizens, administrative levels and external service providers in multi-level committee structures
- Prioritization and management of the Product Backlog while taking compliance requirements and regulatory guidelines into account
- Participation in agile ceremonies and coordination meetings for continuous product improvement
- Integration of GDPR requirements and administration-specific security standards into the development process
- Citizen participation: Coordination of feedback processes and user-focused tests to increase digital citizen satisfaction
Co-founder
balltastic GbR
Development of an innovative app to promote physical activity among children
- Definition and further development of the product vision and roadmap
- Prioritization and management of the Product Backlog
- Creation and refinement of user stories
- Professional leadership of a three-person development team
- Implementation of the Scrum process in a small agile team
- Selection of the technology stack and evaluation of requirements
Development of innovative solutions for complex requirements in the field of children's app development
Product Owner
tegut... gute Lebensmittel GmbH & Co. KG
Responsible for the app and web platform of the tebonus customer loyalty program
- Development and implementation of the product strategy and roadmap for the tebonus platform
- Prioritization and management of the Product Backlog while taking business value and technical dependencies into account
- Requirements management: Collection of business requirements, design and conversion into detailed user stories
- Close collaboration with the development team to clarify business-related questions and ensure product quality
- Stakeholder management: Coordination with specialist departments and management, acting as a link between business and IT
- Participation in Scrum ceremonies as Product Owner (Sprint Planning, Sprint Review, Refinement)
- Release planning and coordination of feature rollouts in consultation with relevant departments
- Analysis of user behavior and identification of product improvements based on data and customer feedback
Product Owner
Yukawa Exponential GmbH
Responsible for a cross-platform (Flutter) app development project
- Taking on the Product Owner role in an international development environment
- Development and communication of the product vision and strategy to the team and stakeholders
- Creation and prioritization of the Product Backlog based on customer requirements
- Detailed preparation and refinement of user stories in collaboration with the development team
- Conducting Scrum ceremonies (Sprint Planning, Review, Retrospective) to ensure an efficient development process
- Coordination and leadership of a nearshore development team consisting of three developers
- Close collaboration with customers to coordinate designs and requirements
- Ensuring product quality through regular review of development results
- Promoting agile ways of working by evaluating the Sprint Retrospective
Technical Consultant & Product Owner
Tennis-Point GmbH
Responsible for establishing a developer location in Cologne and introducing agile structures
- Strategic planning and implementation: Location selection, personnel recruitment and hiring, implementation of agile methods (Scrum/Kanban)
- Taking on the Product Owner role for the myTennis app
- Development and communication of the product vision and roadmap
- Creation and prioritization of the Product Backlog based on business goals and user requirements
- Conducting user story workshops and refinement sessions with the development team
- Stakeholder management: Close collaboration with management, marketing and sales to coordinate the product strategy
- Technical leadership and Product Ownership for the development of a federation portal white-label solution with three connected federations
- Definition of the technical architecture in coordination with the development team
- Ensuring the solution's scalability and adaptability for different federations
Lead iOS Developer
Bayer Business Services GmbH
Responsible for the further development of an in-house iPad solution for Business Intelligence
- Provided technical guidance and conducted code reviews for an offshore development team of up to four people
- Gathered and analyzed requirements from the business department
- Translated business requirements into technical solution approaches
- Prepared weekly reports and coordinated with internal stakeholders
- Further developed the app architecture to improve scalability and maintainability
- Implemented complex features in Objective-C and Swift
- Promoted efficient collaboration between onshore and offshore teams
- Advised the business department on technical possibilities and limitations
iOS Developer / Mobile Evangelist
meinestadt.de GmbH
Further development of the meinestadt.de app suite and strategic consulting on the company's mobile strategy
- Developed and integrated product requirements into the company's mobile portfolio
- Further developed and optimized several iOS apps (Objective-C)
- Identified and implemented technical improvements to increase app performance and user experience
- Regularly coordinated with department management to align app development with company goals
- Established KPIs to measure app success
- Continuously analyzed and optimized app performance based on user data and feedback
Lead iOS Developer
real,- SB-Warenhaus GmbH
Responsible for the further development of the real,- iPhone app
- Led app development across three major versions
- Conducted two complete "relaunches", rebuilding the app from the ground up each time
- Adapted the app to new technical backend requirements and integrated current mobile development standards
- Advised on the development of user concepts and user experience optimization
- Developed technical solution approaches for new product requirements
- Worked closely with the internal business department to coordinate product requirements
- Regularly presented development progress to management and stakeholders
- Planned and carried out the operational handover to the internal METRO SYSTEMS team
Mobile Product Manager
Deutsche Welle – Anstalt des öffentlichen Rechts
Responsible for Deutsche Welle's mobile products and strategies
- Designed and further developed the DW News Portal app in 30 languages
- Defined and prioritized product features based on user requirements and strategic goals
- Worked closely with editorial teams, the IT department, and management to align product goals
- Built and maintained strategic partnerships for content distribution
- Negotiated and managed cooperation agreements with international partners
- Established KPIs to measure product success in different markets
- Created and managed project budgets and effort accounts
- Translated editorial requirements into technical specifications for the development team
Technical Project Manager
Buongiorno E-Mail Marketing GmbH
Responsible for managing technical projects in the B2B email marketing sector
- Designed and developed customized email marketing solutions for business customers
- Provided technical consulting and support during the implementation and optimization of customer projects
- Managed projects throughout their entire lifecycle, focusing on iterative development and rapid adaptation to customer requirements
- Maintained and expanded existing customer relationships through regular communication and proactive problem management
- Actively supported the acquisition of new customers and won follow-up projects
Managing Director and Shareholder
pixelhouse media services
Founding and managing an innovative new media agency
- Co-founder of chefkoch.de, developing it into the leading cooking community in German-speaking countries
- Identifying market opportunities and developing innovative features such as "Cooking with Available Ingredients"
- Continuously improving the platform based on user feedback and market analyses
- Prioritizing and implementing product features to increase user satisfaction and retention
- Conducting partnership discussions with manufacturers of cooking appliances and branded products
- Developing and implementing strategies for integrating partner offers
- Analyzing user needs and market trends to identify new product opportunities
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Retail, Media and Entertainment, Food and Beverage, Information Technology, Sport, and Government and Administration.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Information Technology, Strategy, Marketing, Project Management, and Human Resources.
Summary
I take products from the initial concept to the App Store and make sure they are well received there. I have been working in IT for over 25 years: as co-founder of chefkoch.de, as Product Manager at Deutsche Welle (30 languages), as iOS Lead at real,- and most recently as Product Owner at tegut..., Yukawa, Tennis-Point and for the Hameln-Pyrmont district. I am a certified Product Owner (PSPO I & II, SAFe POPM) and know from my own development experience what is technically feasible.
My strength is the combination of Product Ownership and genuine technical understanding: I communicate with development teams on an equal footing, translate business requirements into clear user stories and confidently manage international and external teams in English.
I am looking for projects as a Product Owner, Technical Product Owner or Interim Product Manager focused on mobile apps and digital platforms, remotely and with on-site work as agreed.
Skills
- Safe Popm Certified
- Pspo I & Ii
- Senior Product Owner With 8+ Years Of Po Experience And 15+ Years Of Product Management Experience
- Agile Frameworks: Scrum, Kanban, Safe
- Requirements Management & User Story Mapping
- Stakeholder Management & Workshop Facilitation
- Product Strategy & Roadmap Development
- Professional Leadership Of Teams
- App Development (Ios/Android, B2b/B2c)
- Expertise In Regulated Environments (Public Sector, Finance, Payment/Loyalty)
- Backlog Management
- Management Of External Service Providers
- 25+ Years Of It Experience
Languages
Education
Hochschule Bonn-Rhein-Sieg
Bachelor of Science · Business Information Systems · Sankt Augustin, Germany
Höhere Berufsfachschule für Informatik Andernach
Technical Assistant for Computer Science · Computer Science · Andernach, Germany
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Martin is based in Cologne, Germany and can operate in on-site, hybrid, and remote work models.
Martin speaks the following languages: German (Native), English (Advanced), French (Elementary).
Martin has at least 25 years of experience. During this time, Martin has worked in at least 9 different roles and for 11 different companies. The average length of individual experience is 2 years and 3 months. Note that Martin may not have shared all experience and actually has more experience.
Based on recent experience, Martin would be well-suited for roles such as: Product Owner UX/Software/App Development, Co-founder, Product Owner.
Martin's most recent position is Product Owner UX/Software/App Development at Landkreis Hameln-Pyrmont.
In recent years, Martin has worked for Landkreis Hameln-Pyrmont, balltastic GbR, tegut... gute Lebensmittel GmbH & Co. KG, Yukawa Exponential GmbH, and Tennis-Point GmbH.
Martin is most experienced in industries like Retail, Media and Entertainment, and Food and Beverage. Martin also has some experience in Information Technology, Sport, and Government and Administration.
Martin is most experienced in business areas like Product Development, Information Technology, and Strategy. Martin also has some experience in Marketing, Project Management, and Human Resources.
Martin has recently worked in industries like Retail, Sport, and Information Technology.
Martin has recently worked in business areas like Information Technology, Product Development, and Human Resources.
Martin holds a Bachelor in Business Information Systems from Hochschule Bonn-Rhein-Sieg.
Martin has 3 certificates. These include: Certified AI-Empowered SAFe® Product Owner/Product Manager (POPM), Professional Scrum Product Owner I (PSPO I), and Professional Scrum Product Owner II (PSPO II).
Martin is immediately available part-time for suitable projects.
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Calculated based on our freelancers’ daily rates as of 26 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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