We build ventures and startups. Sophisticated software solutions that transform how businesses interact with their data.















Since 2011, my team and I have been building companies and software from the ground up. We operate as a venture builder — hands-on software creators from first code to market proof.
We don't start with large teams or polished pitch decks. We start by writing the first lines of code ourselves — shaping the MVP, validating the business idea, and proving market demand. Only once there is real traction do we scale the team and the product.
This approach has led to multiple ventures, including Medolan (discontinued 2015), zizzle eLearning Inc., dedified, TokenForge, and Infobud.ai. Our current focus is nestfainder.ai.
This process reduces risk, shortens feedback loops, and avoids premature scaling — whether we apply it to our own ventures or to custom software built for clients across industries.
Enterprise-grade solutions for the next generation of data-driven applications
Native and cross-platform mobile applications built for performance, usability, and scale. From concept to App Store.
End-to-end SaaS platform development with multi-tenant architecture, subscription billing, and scalable infrastructure.
Strategic scaling of startups and products from MVP to market leadership. Infrastructure, team, and process optimization.
Custom MCP servers for internal data management and SaaS integration, ensuring seamless connectivity and optimal performance.
Advanced Retrieval-Augmented Generation pipelines that enhance AI capabilities with your proprietary knowledge base.
AI-powered conversational interfaces that understand context and provide meaningful interactions with your users.
Sophisticated knowledge representation systems that map relationships and enable advanced data discovery.
High-performance time-series database solutions optimized for temporal data analysis and real-time insights.
Optimized PostgreSQL database solutions engineered for maximum performance and reliability at scale.
Highly efficient vector search solutions for embedding storage and semantic similarity matching for AI applications.
Advanced natural language processing solutions leveraging the latest in neural network technologies for text understanding and generation.
Custom software solutions tailored to your specific business needs and technical requirements. In the past, we even did 6 years of blockchain development (Smart Contracts, Avalanche, Ethereum).
We are a team of passionate software engineers specializing in cutting-edge data infrastructure and AI-powered solutions. Our expertise spans from low-level database optimization to high-level AI integration.
With years of experience in enterprise software development, we understand the critical importance of performance, scalability, and reliability in today's fast-paced digital landscape.
Our mission is to bridge the gap between complex technical capabilities and practical business solutions, delivering software that not only meets today's requirements but anticipates tomorrow's challenges.
Our trusted partners and clients with whom we've built successful solutions.
Meet the talented professionals behind our successful projects

With 30 years experience Hagen is at the apex of software and blockchain innovation. Working on highly scalable and complex technical applications and startups over the past 3 decades delivering real commercial value. As a full stack developer he has worked with almost every programming language that the Planet has ever seen, started with Assembler when he was 15 years old and sold his first software. He is an open source fanatic and frequent contributor to many libraries and frameworks on GitHub.

With her long year experience as Team Assistant and Management Assistant at - for instance - Peek & Cloppenburg and HSBC Trinkaus & Burkhard, Melanie decided to join opendeluxe UG in 2017. She'll take care of the bookkeeping and finances, organizes appointments and business trips.

IT Scalability, Blockchain, Kubernetes and Application Architecture: Gaylord is the development expert helping us to create the big picture concept of the coding and security structure behind the Security Token Sale Platform and other projects as well as implementing it. He and his company are highly experienced in large-scale software projects. If we need a high skilled expert, we contact him on our mutual Slack. Vice versa, we help him if he or his team needs us.

End to end software development: In his previous life Andrey was a principal software developer at MySQL and Oracle, learning the craft of software product development. In the last several years, he is a development expert leading software teams at dnh soft. One of his teams together with 100 Days co-implemented the Security Token Sale platform. Andrey and DNH Soft are specializing in the area of eCommerce, AWS and Machine Learning.

Robert is a lawyer at Lindenpartners since 2013. As a specialist lawyer, Robert supports banks and financial institutions in all issues of banking supervision and capital markets law. His focus in FinTech Consulting is on Robo Advisory, Crowd Investing and Payments. Advising companies for their token offerings, crypto-assets and Blockchain/DLT.

Eric is a lawyer and partner at Lindenpartners. Lindenpartners are legal specialists in crypto-assets and blockchain. Eric's approach to advising his clients is to understand where they wish to go, and develop an attitude together. Pairing pragmatic solutions and entrepreneurial understanding is the key.
Let's discuss how our expertise can accelerate your next project
We respond within 24 hours
Dedicated project specialists
Available across time zones
Join innovative companies who trust us to build their mission-critical data solutions