Proof-of-concept build
Focused systems to test critical technical assumptions early.
Building something new and not sure if it will work?
If you’re a founder, research spin-off, grant-funded project, or small team without a full technical stack — you’re in the right place.
The reality of early-stage product development
Uncertainty is highest at this stage. Critical technical decisions must be made before requirements are fully defined — from technology choices to system architecture and development priorities. At the same time, investors and partners expect tangible progress, where working prototypes and validation matter far more than presentations.
We act as your engineering partner during the earliest and most uncertain stage.
How we support early-stage founders
We work with fast experiments, clear go / no-go decisions, and a focus on reducing risk before committing to full builds.
Sometimes that means proving your idea can work. Sometimes it means discovering early that it shouldn’t — before you spend serious money.
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Technical validation
Reduce early technical risk
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Prototyping
Create working proof of concept
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MVP development
Prepare for users or investors
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Pilot & iteration
Validate and refine in real conditions
What you get
Not just advice or reports, but working systems and clear next steps you can use with users, partners, and investors.
Each engagement is designed to reduce uncertainty and move your project forward in practical, measurable ways.
Functional prototypes
Integrated hardware and software showing full system behavior.
MVP systems ready for pilots
Stable builds for real users, pilots, and field testing.
Technical roadmap
Clear guidance on architecture and development priorities.
Demo-ready systems for investors and partners
Working demonstrations that show real technical progress.
Resonator helped us bring “Vodoraslo” from concept to a fully deployed installation in an urban environment. They supported the design, material sourcing, and build with a strong focus on practicality. The project explores how algae can improve water quality in rivers, requiring both experimentation and execution — and Resonator made that possible. Having worked with them before, we knew we could rely on their ability to turn complex ideas into working systems.
Denis Ivanov, Founder
Read Case Study
Resonator helped us move quickly through cycles of testing and improvement until we reached a final product that was energy-efficient, well designed, and ready for micro-production. We went from concept to finished product in less than six months. Beyond the technical support, they made us feel like we weren’t building it alone.
Denis Ivanov, Founder
Resonator helped us identify the fastest way to produce the physical components of our game while maintaining high quality. Through the collaboration between design and engineering, we solved key practical challenges and developed a compact, fully functional prototype of the Truth Detectives board game.
Monika Simeonova, Co-founder
With Resonator, we had the opportunity to develop improvements in the design and practicality of the product which is key for the efficiency of the smart vertical garden.
Nusha Ognyanova, Co-founder
Why work with us
Try something on Tuesday, know by Thursday whether it works.
If you’re working on a new product or system and want to validate feasibility, build a prototype, or prepare for pilots and fundraising, let’s talk about the best way to move your project forward.
In-house Labs
Enabling fast transition from concept to physical, testable systems, and iteration in real-world conditions.
Talk to us about your idea
If you’re working on a new product or system and want to validate feasibility, build a prototype, or prepare for pilots and fundraising, let’s talk about the best way to move your project forward.