Open for collaboration

We build the tech.
You keep the vision.

You bring the idea, the domain expertise, and the ambition. We engineer the product — from concept to deployment — in exchange for equity. No upfront build costs. Just aligned incentives.

Submit your idea → How it works

How it works

— 01

You bring the brief

Share your concept, market, and traction — whether it's a deck, a prototype, or just a well-formed idea. We'll assess the technical scope and commercial viability.

— 02

We structure the deal

We agree on the build scope, milestone plan, and equity stake. Typically 5–25% dependent on complexity, timeline, and stage. Simple docs, clear terms.

— 03

We build & launch

Our senior team engineers the full product — strategy through deployment. You focus on customers, funding, and growth. We ship on a shared timeline.

What we're looking for

B2B SaaS

Data-heavy platforms, workflow automation, or vertical SaaS with clear revenue potential. We love boring industries with fragmented software.

AI / ML products

LLM-powered tools, document intelligence, decision engines, or agent systems that solve real operational problems.

Marketplaces & platforms

Multi-sided marketplaces, matching platforms, or exchange models with network effects and defensible moats.

Developer tools

APIs, SDKs, infrastructure tooling, or DevOps products that make other engineers' lives easier. We eat our own dogfood.

E-commerce innovation

Checkout optimisation, headless commerce, or platform-layer plays. We've built ten platforms — we know what works.

Climate & proptech

Regulatory tech, property platforms, energy data, or sustainability tools. Meaningful problems with real-world impact.

Frequently asked questions

Between 5% and 25%, depending on the scope of work, stage of the company, and the technical risk involved. Earlier-stage ideas with heavier build requirements sit at the higher end. We keep terms straightforward — no complicated structures.
Yes — hybrid models work well for later-stage startups. A reduced equity stake plus a discounted cash build rate. We're flexible on structure as long as incentives stay aligned.
Most projects are 3–9 months from kickoff to first release. We work in milestones with clear deliverables. Speed depends on complexity, but we move fast — our team is senior by design.
We stay involved post-launch — ongoing development, maintenance, and scaling support. The equity arrangement typically includes a continued commitment period. We're not build-and-leave.
All IP belongs to your company from day one. We build on your infrastructure, under your GitHub org, with your accounts. Clean and simple. Our interest is in equity value, not owning technology.
Domain expertise, customer access, and the ability to sell. We handle the engineering — you handle the market. Founders who know their customer, have a clear route to revenue, and are willing to move fast are the best fit.

Have a concept worth building?

Tell us about your idea. If there's a fit, we'll structure a proposal within a week. No obligation, no fluff — just a conversation about what you're trying to build.

Submit your idea →

BuiltByGo Ltd · Worcester, UK · hello@builtbygo.com