SellerX
SellerX
The German Amazon aggregator that raised $750M+ to build a portfolio of 80+ consumer brands.
E-COMMERCEDE
Technical Co-Founder for Creators
BUILD THE PRODUCT YOUR AUDIENCE ALREADY WANTS TO BUY.
We invest the engineering. You bring the audience. We partner with a small number of creators to turn demand into owned software—recurring, and aligned with your brand.
APPLY TO CO-FOUND01
“Media gets you the attention. Software builds the equity.”
— Alex Hormozi
02
“Information products are great for cash flow, but software is where you build real wealth. It's the holy grail of recurring revenue.”
— Russell Brunson · Founder, ClickFunnels
03
“Every company is now a software company.”
— Satya Nadella · CEO, Microsoft
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KEY INDUSTRIES
AREAS OF EXPERTISE
WHY CHOOSE US?
We're not hired. We're invested
ALIGNED INCENTIVES
We don't charge agency fees. We build for shared upside.
You aren't hiring a dev agency that gets paid whether the app succeeds or fails. We operate on a shared revenue model. We absorb the initial engineering costs and technical risk, meaning we only win if the product actually converts your audience into paying users.
ENTERPRISE-GRADE STABILITY
Real engineering. No fragile builds or duct-taped prototypes.
Anyone can prompt an AI to build a simple app today, but scaling is different. Backed by years of experience building for European unicorns, we engineer scalable architecture that won't crash when your audience floods the servers.
PRODUCT STRATEGY INCLUDED
We deliver the business logic, not just the codebase.
We don't just hand over an app and walk away. We provide the complete product framework—from the core user experience and monetization strategy to the exact content angles you need to naturally integrate the product into your existing channels.
INTENTIONAL EXECUTION
From scattered concept to a live product in 2 to 4 weeks.
We move fast, but we don't rush. We compress the timeline to a revenue-generating MVP without sacrificing quality. No endless development cycles or bloated feature sets—just precise execution to get a high-quality product into your audience's hands quickly.
PRODUCT DESIGN AND DEVELOPMENT AGENCY SERVICES
Tailored support from first prototype to long-term scale
Great products don't happen by accident. As a digital product design agency, we help startups grow through smart strategy, solid UX, and scalable development from day one.
Map out a product your audience actually wants.
01
Product discovery
Define the business logic, core features, and the exact audience pain points the app will solve.
02
UX/UI previews
Visualize the user journey with high-fidelity design concepts before a single line of code is written.
03
Content angles
Tailored go-to-market strategy to naturally integrate the app into your existing content channels.
Fast execution without compromising architecture.
01
2–4 week MVP
From scattered concept to a live, production-ready product. No fragile, duct-taped code.
02
Smart AI integrations
AI features implemented where they actually add value — not bolted on for show.
03
Creator feedback
You stay in the driver's seat. Your requests and vision are actively incorporated during the build phase.
Monetize smoothly and handle the traffic spikes.
01
Payment flow
Fully automated subscriptions, invoicing, and secure payment gateways ready to accept users on day one.
02
Real-time analytics
Track your active user base, subscription metrics, and revenue from an easy-to-read dashboard.
03
Stable scaling
Architecture that won't crash when your audience floods in. Built from experience with European unicorns.
Long-term partnership with fully aligned incentives.
01
Shared revenue
Zero agency fees. We absorb the initial engineering costs and risk. We only win when your product converts.
02
Continuous logic
Ongoing maintenance, bug fixes, and feature updates based on real user feedback — not billed by the hour.
03
Your co-founder
Dedicated engineering arm for the long run. You focus 100% on content creation and community growth.
PRODUCT DESIGN AND DEVELOPMENT AGENCY
Enterprises, That Trusted To Ship Together
Menupay
Menupay
Denmark's leading restaurant payment and discount app, connecting 600+ venues.
HOSPITALITYDK
Narbutas
Narbutas
Lithuanian office furniture manufacturer trusted by 750+ dealers across 61 countries.
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Berner Baltic
Berner Baltic
One of the Baltics' largest consumer goods distributors, moving product across three markets for a company with 140 years behind it.
INDUSTRIALBALTICS
AudioInvision
AudioInvision
AI SaaS that turns a music producer's track into a release-ready cover and music video — no designer needed.
SAASEU
Etsellify
Etsellify
Etsy intelligence platform sitting on 100M+ product records — so sellers know what's selling before they list it.
SAASEU
Asinly
Asinly
Amazon keyword tool with millions of records — find the search terms that move product before the competition does.
SAASUS
NoCV
NoCV
Structured hiring profiles that replace the CV — hiring teams filter faster, candidates get judged on more than formatting.
HR TECHEU
APPLICATION
APPLY TO CO-FOUND
We bring the speed, firepower, and know-how to build from day one. Bring your idea, or join one of ours.
Have a project to discuss?
Gediminas ČilinskasSoftware Engineering Team Lead