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Solidale
Solidale is an invitation-only platform where students and recent graduates in the Netherlands form small groups (5–50 people) to share a fixed percentage of their gross income (1–10%) for a chosen period (3–20 years). All members contribute, regardless of earnings, and the collected amounts are redistributed evenly each year, allowing everyone to share both risk and upside. The model creates a career safety net: members can take ambitious steps, launch a start-up, accept an unpaid internship, study abroad, knowing that part of their peers’ success will support them if their own income is lower. Pools are self-managed: each group sets its size, rate, duration, and an optional annual cap to prevent extreme payouts. A simple web app manages invitations, agreements, income reporting, and SEPA transfers, while ensuring GDPR compliance. Community features (events, mentoring, group chat) strengthen trust and opportunities beyond the money flow. By combining solidarity, transparency, and Dutch banking infrastructure, Solidale helps young professionals diversify career outcomes, build networks, and pursue bold goals without fear of failure, a modern, cooperative answer to financial uncertainty in early careers.
Sell.store
I’m currently developing a next-generation e-commerce platform that combines the simplicity of digital storefronts like Sell.app with the advanced capabilities of platforms like Shopify and Klarna. It allows merchants to sell both digital and physical products seamlessly, providing a fully integrated solution for online sales. One of the core features is a built-in wallet system, designed to encourage customer engagement and retention by enabling users to store funds, receive credits, and make purchases directly within the platform, enhancing convenience and boosting sales. The backend is being built to be highly flexible and robust, supporting complex APIs for inventory management, payment processing, and automated marketing campaigns. This allows merchants to implement sophisticated workflows, such as targeted promotions, subscription management, and real-time analytics. The system also includes advertising tools similar to Klarna’s, enabling merchants to create dynamic, personalized ad experiences that drive conversion and customer loyalty. By combining a modern, user-friendly frontend with a scalable, feature-rich backend, the platform not only simplifies online selling but also provides advanced tools for growth and monetization. Ultimately, it’s a comprehensive ecosystem that empowers sellers to manage all aspects of their business in one place while giving customers a smooth, engaging shopping experience that encourages repeat spending
EUC Takes Part
EUC Takes Part is a platform aiming to connect university students in Rotterdam to selected volunteering opportunities in the city. We strongly believe in the power of volunteering as a space where people meet, exchange stories and life experiences, work together and grow from one another, all the while helping build a better tomorrow for our society. We specifically chose to target university students as we fall under this demographic and thus have a better grasp on how to approach the project. Moreover, by speaking to larger-scale initiatives with a similar mission, it became apparent that students are notoriously difficult to reach and involve in volunteering initiatives. Tackling this glaring gap became one of the motivations for our projects. We also aimed to address a societal problem concerning international university students' integration in the Netherlands (see next text box for extensive look into this). Today, not only do we have an active website with volunteering opportunities posted weekly, we also have an enthusiastic community of over 250 people centralized in a 'WhatsApp Community'. We also created a documentary that covers our journey from early conception to full-on establishment with in one academic year (2024-2025). Our goal is to continue to connect students to the city and people of Rotterdam, hoping to reach as many as we can along the way!
SecondBiteBTC
** We mine Bitcoin on 100% renewable energy and turn miners’ waste heat into a food-rescue engine. Co-located solar and wind power the farm; controlled exhaust air (about 45–60 °C) feeds hygienic drying tunnels that transform cosmetically imperfect or near-expiry fruit from major retailers into shelf-stable, high-value products. Long-term partnerships secure low-cost supply and cut retailers’ waste toward zero. Each kilowatt-hour earns twice—first as hashrate (BTC), then as low-grade process heat—delivering profit and impact aligned with SDGs 7, 8, and 12. Daily unit economics per miner are clear: a typical unit draws ~3.5 kW, producing ~84 kWh/day of usable heat. With ~5 kWh to dry one kilogram of fruit, that yields ~17 kg/day. At €14/kg selling price and ~€4.8/kg COGS (rescue fruit, labor, packaging, logistics, QA, auxiliary energy), margin is ~€9/kg—about €155/day. Bitcoin adds ~€10–€15/day, for ~€165–€170 per miner, before depreciation and financing. Solar plus wind reduce grid purchases; a small battery smooths short lulls. At scale (40 miners), output is ~672 kg/day with ~€6.6–€6.8k/day in margin pre-overheads. Go-to-market is dual track: private label for retailers/food manufacturers (fast volume), and our own dried-fruit brand with two label families: an “Energy-Friendly” line (clean design, sustainability badges, no added sugar) and a “Crypto Culture” line using playful, meme-coin/crypto-inspired visuals (collectible stickers, QR codes to educational pages) to engage teens and young adults—without promoting trading or speculation—both HACCP/BRC-certified with full traceability.
WOUW
Small and medium-sized SMEs often want to contribute to society, but they face several challenges. They don’t have the time or resources to search suitable charities, handle the legal paperwork, or manage the donation process. The growing pressure around CSRD and ESG compliance adds another layer of complexity, as companies will soon be required to track and report their social impact. Wouw is a platform for SMEs to donate to charities more easily and with greater impact.
FLIX
We want to develop FLIX: a microlearning platform & talent agency that trains and VCA-certifies students in just five days. With this fast, practical approach, students become ready to support the energy transition with hands-on tasks, ranging from administrative support (like KLIC reporting) and site marking to digging and moving materials, inspired by the ‘douwwerkers’ from back in the day. With sharp focus, our aim is to shorten the training process from months to weeks, creating valuable assistants for professionals. This means experts can concentrate on the complex, high-impact work, while students help accelerate the transition. That’s our edge: we don’t just fill jobs—we unlock potential. - Students gain unique CV-skills, income, and purpose, turning their ambition into action. - Companies get instant, hassle-free access to a motivated talent pool, with the option for long-term growth (talent bridge), simply by paying a placement fee. To build this platform, we want to collaborate with early-retired professionals from the field. They have the knowledge, but not always the capacity for heavy work anymore. By transferring their expertise into microlearning modules, they can keep contributing to the transition in a new, meaningful way.
Surf Agency
At Surf Agency, we make AI concrete and practical for SMEs. We help companies with 10–100 employees move beyond the buzzword and turn AI into real value in their daily operations. No thick reports, just smart automations, hands-on workshops, and an AI Quick Scan that quickly uncovers opportunities to save time, cut costs, and accelerate growth. We believe AI only creates real impact when it fits a company’s unique processes and culture. That’s why we combine creativity (branding, content, interactive tools) with technical depth (n8n, APIs, custom GPTs). The result: solutions that are not only efficient but also tailored to who our clients are. Our edge? We make AI accessible, without jargon, and always with a focus on results. Clients don’t get abstract strategies on paper, they get working systems that deliver immediate impact. In short: Surf Agency is the AI partner that helps SMEs ride the wave of the future—practical, personal, and future-proof.
Joost Business
We develop affordable, self-sufficient, and modular eco-lodges as a new housing solution. Our concept is based on 13-meter modular containers that can be used as single units or stacked into multi-story buildings. These lodges are designed to be energy-efficient and sustainable, using AA+ insulation, smart materials, and the option to integrate renewable energy. They can be deployed quickly and flexibly, making them suitable for temporary housing, short-stay solutions, or as part of permanent modular communities. By combining modern architectural design, affordability, and ecology, our eco-lodges offer an attractive alternative to traditional construction. They create pleasant and safe living environments with greenery, biodiversity, and strong community feeling. Together with an experienced partner in housing development, we are bringing this concept to life, starting with a location that today feels dark and unsafe, but will be transformed into a lively, secure, and welcoming community.
Washed
We want to address an existential pain of society: Dirty Laundry. By providing a subscription based laundry service that handles all the steps from taking off your dirty favourite sweater to it appearing neatly folded at your doorstep. This includes pickup, washing, drying, ironing, folding and delivery. This makes it possible to outsource a never-ending chore at a reasonable price-point, using a scalable, adaptive and sustainable approach.
