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Software Engineering

From MVP to millions of users.

We build systems that scale, for startups and scale-up companies.

Tell us about your project

They already trust us

Our values

Fast experimentation, reliable product

We believe in the Pareto Principle, and care about fast experimentation, confirming core hypothesis and capturing business value.

Pragmatism

  • Real problems
  • Clear hypothesis
  • Clear output

Trust

  • Build for reliability
  • Build for performance
  • Be transparent

Ownership

  • Founder mindset
  • Business oriented
  • Autonomous

Velocity

  • Cut the bloat
  • Ship early
  • Iterate

Efficiency

  • Less meetings
  • More work
  • More value

Our work

The scale we know.

Click stream data pipeline

weborama · adtech

We designed and built a modern data pipeline that scaled to billions of events per day. Containerized, autoscaled, reduced cost.

Weborama flow: events on a phone, processed user profile, destination sync

KYC and wallet

leboncoin · re-commerce

We designed and built an integration with an account provider, complying with complex KYC requirements, powering the digital wallet.

leboncoin mobile listing with Paiement sécurisé and Réserver

Built for success

bereal · social network

We built experimental features and systems that scale: at BeReal, all systems must expect to scale from zero to millions of active users in a 2 minutes

Datadog chart of BeReal request rate: four daily spikes at 10× baseline

Stack

The tools we reach for.

A short list, chosen because we have run them at the load this page talks about — not because they are fashionable.

Backend

Go

Our default choice for backend when velocity and performance matter.

Golang
Frontend

React + TypeScript

Solid framework and maintainable code for frontend applications, simple or complex.

ReactTypeScript
Mobile

React Native + Expo

Shared codebase and mature ecosystem, a cheatcode for velocity.

React NativeExpo
Observability

Datadog, Prometheus, Grafana

What you can not observe, you can not fix or improve.

DatadogPrometheusGrafana
Data

Storage that matches the access pattern

Proper technology and data model matters a lot.

SpannerCassandraCouchbasePostgresElasticsearch
Analytics

Understand your business with data

Cost efficient analytics with cloud data warehouses.

Google BigQuerySnowflake
Prototyping

Coding Agents: Cursor, Claude, Grok

AI with supervision allows for great velocity.

Claude CodeGrok BuildCursor

Approach

Solve. Ship. Repeat.

1

Solve it

Understand the problem, design the solution.

2

Ship it

Short cycles. Visible progress. Production weekly.

3

Operate it

Observability and alerts, because production is not a toy.

Start a project

Tell us about the problem

We tell you how to solve it.

Let's talk