Building the Company: From Founders to Structure

Siert Bruins Siert Bruins is the author of this webpage
A Founder Lesson in Startup Governance

When people talk about beginning a tech startup, the focus is often on the technology, the products, markets, or funding. But before any of that can scale, something else needs to take shape: the company itself. A startup is not just an idea or a piece of technology — it is a group of people, working together within a structure that determines how decisions are made and how responsibilities are shared.

That structure does not emerge in isolation. It builds on earlier choices about the idea itself and whether it is worth developing further. Before focusing on teams and organization, it is important to understand how a business idea is tested and validated. This is explored in more detail in this guide to evaluating a startup idea.

In the early stages, much of the structure of a startup is informal. Founders divide tasks based on expertise, decisions are made through discussion, and ownership is often seen as something for later. As the startup develops, however, these informal arrangements gradually become formalized. Roles are defined more clearly, teams are expanded, and ownership is translated into shares that determine who ultimately controls the company.

This section looks at that transition. It explains how a startup moves from a small group of founders with a shared idea to an organized company with defined roles, responsibilities, and decision-making structures. Understanding this process helps to explain why some teams remain aligned as they grow, while others run into friction when the stakes increase.

While this section explains how companies are structured in theory, many of these dynamics only become clear in practice. The insights here are based on my own experiences in building startups, where ownership, roles, and control did not always evolve as expected. You can explore how these situations played out in real cases in these founder lessons.

This section is being expanded with additional pages on founder agreements and corporate structure.

Team & Hiring Strategy: Building the Capabilities Your Startup Needs

Learn how to structure a startup team by combining technical expertise, market insight, and execution — and how these choices influence ownership and control.

startup team structure with technical and business roles

Building a startup team involves more than filling roles. It requires balancing different perspectives — technical development, market understanding, and execution. How these capabilities are combined shapes not only how the company operates, but also how decisions are made and how ownership evolves over time.

About Siert Bruins

Siert Bruins, PhD

Hello! I'm Siert Bruins, a Dutch entrepreneur and founder of Life2Ledger B.V. . Trained as a Medical Biologist, I hold a PhD in Clinical Diagnostics from the University of Groningen and have over two decades of hands-on experience in innovation at the intersection of universities, hospitals and technology-driven companies.

Throughout my career, I have (co)-founded several life science startups and helped researchers, inventors, and early-stage founders transform their ideas into prototypes, patents, partnerships, and funded projects. My work spans medical device development, clinical validation, startup strategy, and technology transfer. I've guided innovations from the initial sketch to licensing agreements and investment negotiations.

Since 2009, I've run the Dutch version of this site. I launched to provide founders worldwide with practical, experience-based guidance on inventions, patents, valuation and raising startup capital. Today, in Life2Ledger, I also focus on blockchain-based data validation for AI in healthcare — Specifically: how can you be sure that your AI is trained and validated on the correct data, and that this data truly comes from the patient and the device you think it does?

The content on this site is based on my own experience with real startups — real negotiations, real decisions, and real outcomes. I use tools to support the writing process, but the insights, structure, and conclusions are my own. This is not generic content, but a reflection of what actually happens behind the scenes.

Want to connect? Visit my LinkedIn or follow me on X. Have questions about your startup strategy or patents? Reach out and I'll share practical insights from real-world experience.