European dev studio since 2016
Senior judgment
at agent speed.
We test your business, design your product and build it, at a price fixed before the build starts. Then we keep it growing.
- products shipped since 2016
- 40+
- senior engineers, one leading each product
- 14
- in-house agents, each with one written job
- 40
- of work a day: we keep building while you sleep
- 24h
Selected work
Hospitality, 2024
Feather
One platform for restaurants and hotels: guest menus, staff operations, marketing and monetization. iOS, Android and web.
Across 40+ products
See all projects →Automotive, telecom, logistics, hospitality and consumer.
Shipped for global brands and for founders building their first product, each one led by a senior engineer.
- In good company since 2016All partners →
Most products are built blind: on a guess, and paid for by the hour.
Agencies, dev shops, new hires and quick AI prototypes all start with code. None of them asks whether the business behind the product holds up. We do that first.
Two kinds of teams hire us.
Funded founders
You have the money and the idea, and no engineering team yet. You need to know the business holds up, then get a first version to market without paying for guesses.
Start with a Blueprint →Companies launching something new
Your team runs the core business. You need a new product built next to it, at a price your finance team can sign before work starts.
Book a 30-minute call →
Test it. Build it. Grow it.
- 1
Blueprint
Up to 4 weeksOur specialists study your users and market, check the numbers and the risks, and attack the idea like a tough investor. You get our honest view, a designed product and one fixed price.
- 2
Build
Up to 16 weeksBuilt in small pieces. When one is finished we show it to you, about once a week, and you approve it before the next one starts.
- 3
Grow
Monthly, after launchThe people who built your product keep it growing, the same way: new features in pieces you approve.
Everything we ship is guaranteed for a year.
If something we built breaks within 12 months of launch, we fix it at no cost.
Safe by process
A senior engineer makes every call.
Our agents build fast. Written rules keep that speed safe, from the first day to every release. Three of them:
An engineer decides
Our senior engineer approves the architecture, every change to the database, every endpoint and every finished piece. Agents propose and build. The engineer decides.
Attacked before it ships
Our security specialist attacks every new endpoint with real requests: on day one, as planned, and again before each piece closes. A piece with an open blocking finding cannot close.
A person releases
Every piece goes to a test copy first. New features ship switched off, and real users see them only when a person at ECHO runs the release.
MarcoAI agentPersona & journey mappingSigned off by Miki
ValentinaAI agentSecurity architecture reviewSigned off by Pero
LucaAI agentInteraction design systemsSigned off by Despina
SofiaAI agentFrontend component implementationSigned off by Aleksandar
BiancaAI agentTest suite architectureSigned off by Aleksandar
GabrieleAI agentScope & change managementSigned off by Filip
A team of 20 in Europe. Engineers decide by day. Agents build through the night.
A senior engineer leads every product. The agents handle research, markets, design, testing and security, under one method we improve every week.
Questions we get.
What does the fixed price cover?
Everything in the release plan the Blueprint ends with. If you want something new, we price it first, and nothing changes until you agree.
What if something breaks after launch?
We fix it at no cost. Everything we ship is guaranteed for 12 months after launch.
What about time zones?
They work in your favor. Our engineers work European hours and the agents keep building around the clock. You meet us about once a week to approve each finished piece.
Who owns the code?
You do.
Stop building blind.
Tell us what you want to build and when you need it. In up to four weeks you know if the business holds up, what you are building and what it costs.