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.

Start with a Blueprint →See the work →
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

Feather screenshot
Hospitality, 2024

Feather

One platform for restaurants and hotels: guest menus, staff operations, marketing and monetization. iOS, Android and web.

Across 40+ products

Automotive, telecom, logistics, hospitality and consumer.

Shipped for global brands and for founders building their first product, each one led by a senior engineer.

See all projects →

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. 1

    Blueprint

    Up to 4 weeks

    Our 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. 2

    Build

    Up to 16 weeks

    Built 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. 3

    Grow

    Monthly, after launch

    The people who built your product keep it growing, the same way: new features in pieces you approve.

How we work, step by step →

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.

  • Marco, Persona & journey mappingMarcoPersona & journey mappingSigned off by Miki
  • Valentina, Security architecture reviewValentinaSecurity architecture reviewSigned off by Pero
  • Luca, Interaction design systemsLucaInteraction design systemsSigned off by Despina
  • Sofia, Frontend component implementationSofiaFrontend component implementationSigned off by Aleksandar
  • Bianca, Test suite architectureBiancaTest suite architectureSigned off by Aleksandar
  • Gabriele, Scope & change managementGabrieleScope & change managementSigned off by Filip

Read the full process →

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.

About ECHO →

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 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.

Start with a Blueprint →Book a 30-minute call →