From prototypeto working product.
You have an idea, a pitch deck, and maybe a pre-seed round — but no in-house engineering team. Instead of waiting six months for an MVP, you receive one in four weeks: live, demo-ready, testable with real users.
- Step-by-step roadmap with weekly live demos rather than a months-long black box.
- A stack that convinces investors: Java, Spring, React, Stripe, PostgreSQL.
- No lock-ins — the code, documentation, and handover belong entirely to you.
Why this sprint works.
Seven years of engineering practice — but more importantly, I have been a co-founder myself and know the pressure to ship something tangible quickly.
An MVP is not about perfect architecture. It's about having something in your hand that you can talk about — with investors, first customers, your own team.
My name is Justin Eiletz. At 22 I co-founded AlphaOmega-IT GbR and grew it into a standalone agency over two years. I know the trade-off between technical correctness and the need to simply move forward — and I make those calls faster than most senior engineers today.
Alongside that, I run RaindropCentral as a personal reference project: a complete enterprise system, designed, built, and operated solo. That's exactly what investors want to see — and exactly what you receive as the outcome.
From idea to live demo in four steps.
Weekly demos, clearly defined milestones. You know at the end of each week how far we are.
- 01
Discovery workshop
One to two days of joint work: what exactly does the MVP need to do, and what deliberately not? The output is a sharply scoped specification — not a wish-list.
- 02
Architecture and first functional skeleton
Backend, database, authentication, and an initial frontend stand at the end of week 1. You can log in, navigate, and get a feel for the application.
- 03
Core features and payment integration
Weeks 2–3: the features that define your use case. Stripe integration, email delivery, and an admin dashboard included. A live demo every week.
- 04
Launch and handover
Week 4: production deployment on hosting of your choice, monitoring, documentation, and a handover workshop for your team or future engineers.
What the sprint suits.
Three typical scenarios that fit into four weeks.
- 01
SaaS prototype with payments
Login, subscription tiers, Stripe integration, admin dashboard. Enough to test first paying users or to show investors that the mechanism works.
- 02
Marketplace MVP
Supplier and demander profiles, search and booking, ratings. Deliberately limited to one city or niche so the MVP becomes comparable at all.
- 03
Internal tool as an external product
You have something in Excel — or an Excel-like solution — that could be a market. I bring it to a standalone application within four weeks.
Founder Sprint.
Four weeks, one fixed price, a working product at the end. Plus a 30-day bug-fix guarantee.
Complete web application with backend, frontend, database, authentication, and payment integration. Live after four weeks, with documentation and handover.
- Backend with Java/Spring or Node.js, REST API
- Frontend with React and TypeScript
- Stripe integration and email delivery
- Hosting setup, monitoring, and 30-day bug-fix guarantee
All prices include 19% German VAT. Payment in two tranches: 50% at start, 50% after live demo. The code and data belong entirely to you.
Request the Founder SprintBefore you reach out.
Three questions that come up in almost every founder first call.
What happens after the four weeks?
You have three options: continue with me (on a maintenance retainer or as a second sprint with more features), hand over to your own team, or hand over to another provider. Because the code is well documented and uses widely adopted frameworks, this is possible without lock-in.
What if the scope doesn't fit into four weeks?
In the discovery workshop we trim the scope so it fits. Lower-priority features move to the next sprint. Tightly scoped sprints deliver more value than a drawn-out marathon.
Who owns the intellectual property?
You do. With full payment, all rights of use and exploitation of the code developed for you transfer to you. Open-source libraries used retain their respective licences.
More on this in the blog
Background reading on the topic — writing rather than selling.
Ready for your sprint?
Book a 30-minute first call. You'll find out whether your idea is realistic in four weeks — without any sales pressure.