Joost D.-Independent Product & Venture Builder
Check rate
Experience
Independent Product & Venture Builder
Self-employed
- Ran structured venture discovery across five fields (real estate, trades & property management, psychotherapy & coaching, social impact). Conducted 100+ interviews plus surveys and ad tests, with kill criteria defined upfront for every hypothesis
- Designed and built AI agents for my own workflows: voice-message transcription and summarization, a journaling app with UI, a voice assistant for task planning, plus research and discovery-synthesis agents (Claude Code, Cursor)
- Built an AI-assisted tool that crawls and values property listings to pre-screen investment opportunities
- Executed several real estate projects in Germany and abroad, from sourcing and valuation to acquisition, renovation and operations
Studio Lead / Senior Product Manager
Deloitte Digital GmbH
- Owned and led the end-to-end development of digital products, leading cross-functional and international teams of up to 10 across product, design, and engineering
- Delivered a digital solution to streamline real estate inspection and valuation processes, leading user research, workshops, and multi-organization rollout
- Defined MVP and product vision for a global healthcare platform, aligning stakeholders across key international markets and successfully launching the initial product version
- Co-led discovery and delivery of a cross-platform digital product (web & mobile), integrating emerging technologies such as AR and AI to enhance user experience
Fintech Product Manager & Software Developer
Vantik GmbH
- Played a key role in scaling a mobile-first investment platform to 10,000+ users
- Co-owned core product areas including onboarding, portfolio management, and user engagement, driving improvements in activation and retention
- Co-led end-to-end product development from discovery to launch in a fast-paced startup environment, working closely with engineering and design
- Translated user insights into product features through continuous discovery, user research, and iterative delivery, while contributing hands-on to implementation using Node.js and Vue.js
Fintech Product Manager
Sapaso GmbH
- Supported development of B2B fintech software, focusing on quality assurance and product consistency
- Facilitated agile processes with an external development team
Consultant | New Venture Building
Boydak Strategy Consulting
- Developed and validated new business models for clients in banking and insurance
- Supported strategy definition and implementation of innovation initiatives
- Coached and facilitated innovation labs for cross-functional client teams
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Real Estate, Banking and Finance, Healthcare, and Insurance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Research and Development, Information Technology, Investments and M&A, Operations, and Project Management.
Summary
Product Leader with 8 years of experience building digital products from 0→1 across startups and consulting, including 3 years at Deloitte Digital. Track record in fintech, healthcare and real estate, combining business acumen with hands-on UX, engineering and AI-native prototyping.
Experienced in leading cross-functional teams and aligning senior stakeholders in complex, international environments.
Skills
- Product & Strategy: Product Strategy, Roadmapping, Mvp Definition, Product Discovery, Stakeholder Management, Agile/Scrum
- Product Development: End-To-End Product Development, Cross-Functional Leadership, User Research, Workshop Facilitation
- Technical: Node.Js, Vue.Js, Rest Apis, Ai Prototyping (Claude Code, Cursor), Technical Product Management
- Tools: Jira, Confluence, Figma, Miro
Languages
Education
IE Business School
Master in Management · Digital Business · Madrid, Spain
Cologne Business School
Bachelor in General Management · Marketing & Finance · Cologne, Germany
Certifications & licenses
Web Development Bootcamp
Le Wagon
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Joost is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.
Joost speaks the following languages: German (Native), English (Advanced).
Joost has at least 8 years of experience. During this time, Joost has worked in at least 5 different roles and for 5 different companies. The average length of individual experience is 2 years and 6 months. Note that Joost may not have shared all experience and actually has more experience.
Based on recent experience, Joost would be well-suited for roles such as: Independent Product & Venture Builder, Studio Lead / Senior Product Manager, Fintech Product Manager & Software Developer.
Joost's most recent position is Independent Product & Venture Builder at Self-employed.
In recent years, Joost has worked for Self-employed, Deloitte Digital GmbH, and Vantik GmbH.
Joost is most experienced in industries like Information Technology, Real Estate, and Banking and Finance. Joost also has some experience in Healthcare and Insurance.
Joost is most experienced in business areas like Product Development, Research and Development, and Information Technology. Joost also has some experience in Investments and M&A, Operations, and Strategy.
Joost has recently worked in industries like Information Technology, Real Estate, and Healthcare.
Joost has recently worked in business areas like Product Development, Research and Development, and Information Technology.
Joost holds a Master in Digital Business from IE Business School and a Bachelor in Marketing & Finance from Cologne Business School.
Joost has 1 certificate: Web Development Bootcamp.
Joost is immediately available full-time for suitable projects.
Daily rate distribution
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Average rates for similar positions
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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 9 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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