Venture Building Studio

We build alongside innovators in an uncertain space

Founders / Venture Capital / Corporations

How can we help at your stage?

0→1

You have an idea. We'll chart the course.

Problem discovery — we validate market need and build the first version of the product and the team.

Explore this path
1→10

You know where. Now how and with whom.

Solution discovery — together, we shape the product strategy and the path to your next customers.

Explore this path
10→100

Further and faster. Hold fast.

Scale discovery — we prepare your product and organisation to operate at greater scale.

Explore this path

Partnerships / Trusted by

Meet our partners

Our thesis

To create a 10x impact, you need a strong team, experienced and trusted builders, the right tools, an open mind, courage and funding. Something is usually missing. That's where we come in.

What you get

Hands-on support
Expert team

We define the scope of support together. Our work focuses on the actions that can deliver a 10x impact in these areas.

Discovery and experiments

Especially when you know what you don't know. Or don't know what you don't know. We turn the business into hypotheses and test the riskiest ones through customer conversations, prototypes and design sprints. We shorten the learning loop so decisions rest on evidence.

Team alignment — shared goals, roles, responsibilities and ways of working.

Before you split equity and sign a founders' agreement. Or when the team, its goals or its ways of working change. Teams that skip this step learn more slowly, argue more often and are more likely to fall apart.

Building the team

We help find and assess co-founders and key people across business, product, growth, operations and finance. We fill the specific gaps your team has at its current stage.

Legal foundations

Before the first investor, the first revenue or the first dispute between founders. With trusted lawyers, we set up the company structure, founders' agreement and cap table. We also guide you through the less glamorous essentials: registration, taxes, accounting and payroll.

Go-to-market

When the product works but paying customers are still few. We refine the offer and target segment, help win the first customers and pilots, and launch a marketing campaign when needed. Sales first, then scale.

Brand and communication

When you can talk about your product for an hour but need to explain it in one sentence. We shape the value proposition in words and visuals, and help you tell your story to customers, partners and investors.

Finance and financial modelling

Before you raise capital, let's calculate what the next stage will really cost. We build a model for revenue, costs and cash flow that can change with your assumptions. We test unit economics, runway and scenarios so hiring, product and growth decisions are grounded in numbers.

Fundraising

When you know how much you need, but not yet from whom or on what terms. We prepare your story, numbers, deck and data room for conversations with angel investors and VC funds. In parallel, we explore public funding and grants, including EU funding. The principle: diversify funding sources and start from a bootstrap mindset.

Effective partnerships: expertise, pilots and market access

We work with a network of business partners and domain experts who help build and validate hypotheses.

Services

Services for companies

Three ways to work with companies: building ventures, developing capabilities and support from strategy through delivery.

For companies

Venture Building

We build new ventures with your team — from the first hypothesis to the first customers.

Let's talk
For companies

Training

We teach teams how to build new products and test ideas in practice.

Let's talk
For companies

Consulting & Delivery

We combine advice with execution, from direction and planning through implementation.

Let's talk

The North Star Ventures team

A strong team makes the difference

We combine founders' experience with product strategy, design and technology.

Meet the team
Bartosz Narzelski

Bartosz Narzelski

Product strategy and venture building

Bartłomiej Postek

Bartłomiej Postek

Entrepreneurship and company building

Bartosz Bykowski

Bartosz Bykowski

Design, technology and business

Industries

Which industries do we work in?

Two domains. Choose where to start the conversation.

Explore our industries

Digital

  • AI & Data
  • Cybersecurity
  • Platforms & Software
  • Fintech
  • Healthtech

Deep Hardware Tech

  • Connected Hardware & IoT
  • Robotics & Automation
  • Embedded Systems
  • Energy & Climate
  • Industry & Manufacturing

Contact / Let's set a course

Let's chart the next step.

Tell us what you're building. Together, we'll find the next step.

Let's talk