Hubertus S.-Senior Technical Product Manager / Chief Product Officer
Check rate
Experience
Senior Product Manager AI
Workflow-automation SaaS for operations teams (Berlin, 120 people); full-time freelance engagement reporting to the CEO: an initial 12-month interim mandate, extended twice through the AI build-out; owned product for one squad and coached the other product managers on process.
- Led generative AI (LLM) integration into the core product: from LLM-powered steps to natural-language workflow authoring and step-level automation suggestions, plus AI-managed dynamic workflows, shipped behind eval gates with human-in-the-loop fallbacks: AI-drafted workflows grew to 31% of all new workflows, and median time-to-first-workflow fell from 3 days to 4 hours.
- Packaged the AI capabilities as a usage-based add-on priced on executed automation steps, working with sales and marketing on positioning: ~€800K added ARR in the first year, and adopting accounts churned 1.8 pp less.
- Owned the roadmap end to end: replaced feature-request-driven quarterly planning with an outcome-based rolling roadmap built on quarterly bets and explicit kill criteria, presented monthly to the executive team and quarterly to the board.
- Rebuilt the product-management operating system: weekly customer-discovery cadence incl. workshop facilitation, RFC/decision-doc reviews and a single quarterly metrics narrative; coached four product managers, one promoted to senior during the engagement.
- Closed the engagement as scoped: hired and onboarded the permanent VP Product, handed over the process playbook and roadmap, and exited on schedule in June 2026.
Chief Product Officer
European freelance marketplace similar to Upwork, a Randstad subsidiary (Berlin, 30 people).
- Designed and launched a new hourly-billing product to solve stagnating client-side demand, growing revenue 30%+ within 5 months.
- Grew the product management team to 5 people and introduced product discovery and design processes.
- Built the roadmap for both products and helped turn the company around to become customer- and data-driven, i.e. with weekly user interviews and tests. Increasing visitor-to-signup conversion by over 20%.
- Implemented a more collaborative, team-based design process and did design myself for strategic features.
Chief Product Officer
B2C contract-management and switching platform for household energy and telco contracts, an EWE corporate venture (Berlin).
- Interim CPO: owned product strategy, roadmap and end-to-end delivery.
Chief Product Officer
Relationship-management SaaS for professional networking (Kiel, 6 people).
- Interim CPO for launch: LEAN product discovery and continuous customer research; coached the founders, PM and designer to build the right thing.
CEO, Freelance Product Manager
My Full Service Agency for Product Management, Product Marketing and AI Agent Development. Our focus is on helping SaaS startups grow more quickly, adding over €10M in revenues across over 50 clients.
- Product Management & Design: helped B2B SaaS clients with GTM, product-led growth, product strategy, user stories and user testing.
- Product Growth Strategy & Marketing: product marketing and data-driven growth for B2B SaaS.
- AI Agent & Product Development: building AI agents and automations for clients' marketing and sales processes, plus internal AI agents automating our own.
Senior Product Manager
Real-estate agent-matching and valuation platform for property sellers (Hamburg, 30 people).
- Sole product manager: shipped an iOS mobile CRM end to end in under 4 months; introduced user testing, surveys and the product roadmap.
Senior Product Manager
API-first headless commerce platform for enterprise retailers (Munich, 100 people at the time).
- Designed core platform and API features on a microservices architecture and brought several to market; built the company's first product roadmap with the US-based CPO and improved product-management processes.
Founder, Product manager
Own startup: online-coaching web & mobile app for coaches (30-day challenges).
- Founder/PM: 100+ customer interviews and lean-startup discovery, pre-sales, mobile-first product design; managed the remote dev team from MVP to a live product with paying customers.
Product Manager, Architect
Leading Dutch educational publisher of print and digital learning materials (Amersfoort, 400 people).
- Product manager / architect for the marketing & sales application landscape (CRM, CMS, shop, ERP, BI/DWH), incl. system integration and DB design & normalisation; ran multiple SaaS RFI/RFP selections.
Product Owner
The Netherlands' largest online retailer (Utrecht), local Amazon competitor.
- Interim Product Owner (Scrum) for the 7-person logistics team; owned the product backlog, modelled and redesigned the returns process and strengthened PO and analysis practices.
Head of Product Management & Design
Digital agency building websites, apps and e-commerce platforms for consumer brands incl. Kia and Landal (Tuil NL, 50 people).
- Head of PM & Design: built the five-person product-owner department from scratch (processes, estimation with function points, tooling, hiring); product owner for major clients' commercial platforms: shops, configurators, checkout and APIs.
Product & Project Manager
Cable TV, broadband and telephony operator, Liberty Global's Dutch unit (Amsterdam, 2M subscribers).
- Product and project manager across UPC NL / Liberty Global projects: functional design (UML, use cases), requirements engineering incl. impact analyses and enterprise architecture.
IT Strategy Consultant
Global management and technology consultancy (170,000 people at the time).
- IT strategy consultant (Strategic IT Effectiveness): advised enterprise/telco/utility clients on IT portfolio and sourcing strategy and business case design.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Automotive, Tourism, Telecommunication, Education, and Media and Entertainment.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Information Technology, Marketing, Strategy, Operations, and Project Management.
Summary
Senior Technical Product Manager with 15 years in B2B software. Owns technically complex platform products end to end: workflow automation, API-first commerce and marketplaces, and AI-assisted workflows. Both SaaS products as well as internal software, workflows and integrations.
Leads product strategy and continuous discovery across engineering squads without authority, and presents roadmap tradeoffs to executive stakeholders. Balances product-led growth with sales-assisted motions; recent outcomes include ~€800K added ARR from a usage-based AI add-on, AI-drafted workflows growing to 31% of all new workflows, and a new sub-product driving a 30%+ revenue increase. Ships AI features and agents: LLM-assisted workflows shipped behind eval gates with human-in-the-loop fallbacks, plus AI agents automating marketing and sales.
Extensive experience in both fully remote and onsite teams. Side business for 10 years: Automated email lead gen agency for B2B SaaS.
Skills
Continuous Discovery As Routine: Customer Calls, User Research, Support And Sales Input, Win/Loss
Experimentation: Hypotheses, A/B And Holdout Tests
Product-Led Growth Balanced With Sales-Assisted Motions (Pql Handover)
Ownership Of Activation, Retention, Adoption And Expansion Against Kpi Targets
Jobs-To-Be-Done (Jtbd)
End-To-End Lifecycle Ownership, Discovery → Launch → Iteration
Product Vision, Strategy & Roadmaps
Starting From User Need And Business Impact
Prioritisation And Saying No, With Kill Criteria Agreed Up Front
Pricing, Packaging, Positioning & Go-To-Market, Build Vs. Buy
Identification And Prioritisation Of Ai Use Cases
Llm Feature Delivery: Prompt Engineering, Eval-Set Design, Precision/Recall Gates, Deterministic Fallbacks, Rag
Multi-Agent Systems, Mcp & Agent-Consumable Api Design
Ai-First Daily Workflow (Claude Code, Cursor, Github Copilot, Chatgpt, Gemini, Mastra) For Research, Analysis, Drafting, Prototyping And Pocs
Credible With Engineers On Architecture And Scope-Vs-Speed Tradeoffs
Public Apis (Rest/Graphql) As Contracts: Versioning & Depreciation Policy, Documentation, Webhooks, Scoping Integration Work
Coding Background (Java, Javascript, .Net, Php, Python)
Kubernetes, Aws/Gcp/Azure
User Stories And Acceptance Criteria, Product Backlog Ownership, Refinement And Prioritisation
User Flows, Customer Journeys And Low-Fidelity Wireframes
Business Process Modelling And Analysis
Agile Delivery (Scrum, Kanban), Safe
Scrum Events (Refinements, Retrospectives, Dailies)
Sql
Funnel & Cohort Analysis
Defining Kpis, Success Metrics, Okrs And Leading Indicators
Outcomes Quantified And Owned (Nrr, Churn, Activation, Arr)
Crystal Clear Written Communication: Requirements Documents (Prds), Rfcs, Async Decision Docs
Stakeholder Management And Executive Communication: Strategy, Tradeoffs, Roadmap Reviews
Risk Management: Risks Surfaced Early And Mitigated With Agreed Kill Criteria
Escalation Management: Decisions Framed With Clear Options For Executives
Cross-Functional Leadership Without Authority
Self-Directed In Ambiguity
Building And Leading Teams Of Up To 20
Motivation & Coaching
Distributed / Global Teams
Product Analytics: Mixpanel, Amplitude, Hotjar, Grafana, Metabase, Power Bi, Tableau
Jira, Confluence, Sharepoint (Microsoft 365), Azure Devops, Linear, Asana, Ms Project, Miro, Figma
Shopify/Magento
Postman, Github
Languages
Education
University of Twente
MSc Computer Science & Business · Computer Science & Business · Enschede, Netherlands · 8/10
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Hubertus is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.
Hubertus speaks the following languages: Dutch (Native), German (Advanced), English (Advanced).
Hubertus has at least 20 years of experience. During this time, Hubertus has worked in at least 10 different roles. The average length of individual experience is 2 years and 7 months. Note that Hubertus may not have shared all experience and actually has more experience.
Based on recent experience, Hubertus would be well-suited for roles such as: Senior Product Manager AI, Chief Product Officer, CEO, Freelance Product Manager.
Hubertus's most recent position is Senior Product Manager AI.
Hubertus is most experienced in industries like Information Technology, Automotive, and Tourism. Hubertus also has some experience in Education, Media and Entertainment, and Telecommunication.
Hubertus is most experienced in business areas like Product Development, Information Technology, and Marketing. Hubertus also has some experience in Strategy, Operations, and Project Management.
Hubertus has recently worked in industries like Information Technology.
Hubertus has recently worked in business areas like Information Technology, Marketing, and Product Development.
Hubertus holds a Master in Computer Science & Business from University of Twente.
Hubertus has 4 certificates. Among them, these include: Certified Scrum Product Owner (CSPO), Certified Professional for Requirements Engineering (CPRE), and Prince2 Practitioner.
Hubertus is immediately available full-time for suitable projects.
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Calculated based on our freelancers’ daily rates as of 4 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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