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 first paying pilot customers
- Tested agentic workflows with Claude Code and Codex for analysis, research, documentation, and prototyping
- Further developed own AI product; training: AI governance, AI compliance, and the EU AI Act (ongoing)
Head of Programmatic
WeightWatchers
Led an international performance setup across eight markets with budget responsibility in the double-digit million USD range and a five-person cross-functional team
- Consolidated a fragmented setup through inhousing, a partner ecosystem, contract restructuring, and unified process standards
- Established KPI frameworks, performance reviews, and reporting routines; reduced CAC by 15% YoY while growing 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 double-digit million EUR budget
- Established control and decision 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 inhousing pilot
Digital Product Manager
Wolters Kluwer
Independently initiated and validated an AI-based B2B SaaS in the legal and IP context between business, technology, sales, and management.
- Initiated and validated an AI-based B2B SaaS in the legal and IP context between business, technology, sales, and management
- Conducted 50+ interviews across four customer segments and sharpened willingness to pay, market assumptions, and the business case
- Derived a justified no-go recommendation before development started and thereby avoided a potential seven-figure bad investment
Co-Founder, Product & Technology Lead
Boxoffice Metrics GmbH
Developed the product concept, roadmap, and technical specifications for a data-driven B2B SaaS for film revenue forecasting
- Led prototype development with a full-stack and data team
- Raised USD 150,000 in early-stage funding
Co-Founder, CTO & CFO
Cognac-Expert
Built an international, profitable e-commerce platform with sales in over 30 markets and developed scalable commerce structures
- Scaled in a 100% KPI-driven environment with average 100% YoY growth
- Built three autonomous teams (Product, Finance, Operations) and introduced agile product management (Kanban, CI/CD, Git)
- Implemented marketing optimizations, internationalization, and automation
Product Owner & Lead UX Manager
Billiger-Mietwagen
Product Owner and UX Lead for Germany's largest car rental price comparison site; led an interdisciplinary team in a professional capacity
- Led an interdisciplinary team for data-driven conversion and UX optimization (+45% increase in conversion rate) using Google Analytics
- Introduced systematic product development (Agile, Jira, Confluence) as well as process improvements for customer service and billing
- Close collaboration 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
Product Lead | Digital Platforms, Transformation & Growth
Mandate: I take on product, platform, and transformation mandates: validate new products, scale platforms, and manage digital businesses in a financially sound way.
Focus: Product discovery, data-driven prioritization, and delivery — with experience in e-commerce, B2B SaaS, growth, and international operating models.
Track record: 50+ B2B customer interviews and a solid go/no-go decision, an operating model for eight markets, and the scaling of an e-commerce platform to 30+ markets.
Way of working: Hands-on with product, engineering, data, marketing, and management; from customer and market signals to roadmaps, business cases, KPI routines, and actionable decisions.
Current: Own AI product project, practical testing of agentic workflows with Claude Code and Codex, as well as further training in AI governance, AI compliance, and the EU AI Act.
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 Inhousing
- 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
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 4 certificates. Among them, these include: Certified AI Consultant, Certified AI Officer, and Certified Scrum Master (PSM I).
Marc is immediately available full-time for suitable projects.
Daily rate distribution
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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