Marc H.-Senior Product Manager / Product Lead
Check rate
Experience
Own AI Product Project & AI Training
Self-employed
- Built and validated SupportPiloten, an AI-powered content operations service; won the first paying pilot customer
- Tested agentic workflows with Claude Code and Codex for analysis, research, documentation, and prototyping
- Continued developing my own AI product; training in AI governance, AI compliance, and the EU AI Act (ongoing)
Head of Programmatic
WeightWatchers
Led an international performance setup across eight markets with a budget in the tens of millions of USD and a five-person cross-functional team
- Consolidated a fragmented setup through in-housing, a partner ecosystem, contract restructuring, and standardized processes
- Established KPI frameworks, performance reviews, and reporting routines; reduced CAC by 15% YoY while growing the budget by 20%
Market Lead Acquisition Marketing DE/CH (Interim)
WeightWatchers
Managed acquisition in Germany and Switzerland across TV, search, social, programmatic, and affiliate with a budget in the tens of millions of EUR
- Established steering and decision-making routines for testing, budget allocation, and cross-channel prioritization
- Improved CLTV:CAC by 35% and saved six-figure amounts per quarter through a paid social in-housing pilot
Digital Product Manager
Wolters Kluwer
Independently initiated and validated an AI-based B2B SaaS product in the legal and IP space, working across business, technology, sales, and management.
- Initiated and validated an AI-based B2B SaaS product in the legal and IP space across business, technology, sales, and management
- Conducted 50+ interviews across four customer segments and refined willingness to pay, market assumptions, and the business case
- Derived a well-founded no-go recommendation before development started, avoiding a potentially seven-figure misinvestment
Co-Founder, Product & Technology Lead
Boxoffice Metrics GmbH
Developed the product concept, roadmap, and technical specifications for a data-driven B2B SaaS product for film revenue forecasting
- Managed prototype development with a full-stack and data team
- Raised USD 150,000 in early-stage funding
Co-Founder, CTO & CFO
Cognac-Expert
Building an international, profitable e-commerce platform with sales in over 30 markets and developing scalable commerce structures
- Scaling in a 100% KPI-driven environment with average year-over-year growth of 100%
- Building three autonomous teams (Product, Finance, Operations) and introducing agile product management (Kanban, CI/CD, Git)
- Implementing marketing optimizations, internationalization, and automation
Product Owner & Lead UX Manager
Billiger-Mietwagen
Product Owner and UX Lead for Germany’s largest rental car price comparison platform; providing functional leadership to an interdisciplinary team
- Leading an interdisciplinary team focused on data-driven conversion and UX optimization (+45% increase in conversion rate) using Google Analytics
- Introducing systematic product development (Agile, Jira, Confluence) as well as process improvements for customer service and billing
- Working closely with Marketing (SEO, SEA, CRM) and Business Development to drive growth
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Food and Beverage, Retail, Healthcare, Tourism, Media and Entertainment, and Professional Services.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Marketing, Operations, Information Technology, Project Management, and Finance.
Summary
Hi, I’m Marc, a Senior Product Manager and Product Owner with entrepreneurial experience in e-commerce, B2B SaaS, and international digital platforms.
I combine product discovery, business-focused prioritization, and operational execution—from validating new product ideas to defining clear requirements and developing existing products further. I gained my experience through founding my own companies as well as in roles at Wolters Kluwer, WeightWatchers, and Billiger-Mietwagen. I am currently developing my own AI product project and testing agentic workflows for analysis, documentation, and prototyping. In addition, I am certified as an AI Consultant and AI Officer.
Skills
Product Strategy & Discovery
- Product Strategy And Product Management
- Product Discovery And User Research
- Market And Customer Validation
- Business Cases And Go/No-Go Decisions
- Roadmapping And Prioritization
- Product Ownership And B2b Saas ### Transformation & Delivery
- Operating Models And In-Housing
- Transformation Management
- Cross-Functional Leadership
- Stakeholder And Partner Management
- Agile Delivery With Scrum, Kanban, Jira, And Confluence ### Growth, Commerce & Analytics
- E-Commerce And Platform Scaling
- Funnel And Conversion Optimization
- Growth And Performance Marketing
- Product Analytics With Ga4, Amplitude, And Looker
- Experimentation And A/B Testing
- Kpi Frameworks With Cac And Cltv:Cac ### Ai-Native Practice
- Ai Prototyping
- Agentic Workflows With Claude Code And Codex ```
Languages
Education
Fresenius University of Applied Sciences (FH)
Diploma · Media Economics · Idstein, Germany
Certifications & licenses
AI Management: Compliance and Governance
LEEON Advanced Learning
Certified AI Consultant
LEEON Advanced Learning
LEEON Advanced Learning
Scrum.org
Scrum.org
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Marc is based in Cologne, Germany and can operate in on-site, hybrid, and remote work models.
Marc speaks the following languages: German (Native), English (Advanced), Spanish (Elementary).
Marc has at least 17 years of experience. During this time, Marc has worked in at least 7 different roles and for 6 different companies. The average length of individual experience is 3 years and 6 months. Note that Marc may not have shared all experience and actually has more experience.
Based on recent experience, Marc would be well-suited for roles such as: Own AI Product Project & AI Training, Head of Programmatic, Market Lead Acquisition Marketing DE/CH (Interim).
Marc's most recent position is Own AI Product Project & AI Training at Self-employed.
In recent years, Marc has worked for Self-employed, WeightWatchers, and Wolters Kluwer.
Marc is most experienced in industries like Food and Beverage, Retail, and Healthcare. Marc also has some experience in Tourism, Media and Entertainment, and Professional Services.
Marc is most experienced in business areas like Product Development, Marketing, and Operations. Marc also has some experience in Information Technology, Project Management, and Finance.
Marc has recently worked in industries like Healthcare, Professional Services, and Information Technology.
Marc has recently worked in business areas like Marketing, Operations, and Strategy.
Marc attended Fresenius University of Applied Sciences (FH) for Media Economics.
Marc has 5 certificates. Among them, these include: AI Management: Compliance and Governance, Certified AI Consultant, and Certified AI Officer.
Marc is immediately available full-time for suitable projects.
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Average rates for similar positions
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Calculated based on our freelancers’ daily rates as of 28 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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