+33 3 74 47 37 37contact@dyb.eu
DYB
Custom development

We build what others refuse to take on

Technical complexity mastered, deadlines honoured, code documented. From exploratory prototype to production at scale — we never drop the baton.

180+
Projects delivered
97%
Clients renewing
< 24h
Response time
100%
Team in France
Describe my project →See our projects
Specialities

What we build

Our offers

What we build for you

From the critical showcase site to the business software that runs your operations, we take ownership end to end.

Websites & web applications

High-conversion landing pages, B2B portals, e-commerce platforms — fast, accessible, SEO-optimised from day one.

Next.js · Laravel · React

Business applications

ERPs, CRMs, custom internal tools tailored to your processes. No more spreadsheets held together with hope.

PHP · Python · PostgreSQL

APIs & integrations

Connectors between your tools, webhooks, real-time syncing. Your stack finally coherent, without double data entry.

REST · GraphQL · Webhooks

AI & automations

Intelligent workflows, data extraction, content generation, auto-classification. We embed AI where it actually saves time.

OpenAI · LangChain · RAG

SaaS products

Multi-tenant architecture, Stripe billing, onboarding, admin dashboard. From MVP to production.

Multi-tenant · Stripe · Auth

Rebuilds & migration

We pick up your legacy code and modernise it without breaking everything. Progressive migration, technical debt under control.

Legacy · Refactoring · CI/CD
180+
Projects delivered since 2019
97%
Clients renewing
12
In-house experts
4.9/5
Average Google rating
Method

Our 5-step process

Transparent, iterative, documented. You always know where we stand and where we are going.

01

Discovery

Scoping interview, needs analysis, scope and constraints definition. We challenge, we propose.

1 week
02

Design

Functional specifications, wireframes, technical architecture, costed planning. You know exactly where we are heading.

2-3 weeks
03

Development

Two-week iterative sprints, systematic code review, CI/CD, regular demos with your team.

2 to 6 months
04

Acceptance

Functional tests, fixes, final validation with your users. We do not ship until it is solid.

1-2 weeks
05

Production rollout & follow-up

Secure deployment, training, technical documentation, 3-month support included. We never leave you stranded.

D+1 → D+90
Technical stack

Proven tech, not hype

We pick the stack based on the problem — not the latest Twitter trend. Maintainable, documented, built to last.

Frontend
Next.js
React
TypeScript
Tailwind CSS
Vue
Backend
Laravel
Node.js
Python
NestJS
Go
Database
PostgreSQL
MySQL
MongoDB
Redis
Elasticsearch
Infra & DevOps
Docker
Kubernetes
AWS
OVHcloud
GitLab CI
AI & Data
OpenAI
LangChain
Pinecone
Prisma
Supabase
Client cases

Real projects, not promises

Three concrete examples of problems we have solved for clients. The pattern is always the same: understand, deliver, measure.

Muze
Music marketplace
API & backend
Problem
Backend infrastructure had to be rethought to handle 10x more volume.
Solution
REST API rebuild, Redis cache, SQL query optimisation.
Result
Response time divided by 4, +250% throughput.
Industrial group (26)
Manufacturing
Custom ERP
Problem
Scattered Excel and EDM: no traceability on manufacturing orders.
Solution
Internal ERP connected to the accounting ERP, workshop scheduling, tablet interface.
Result
8,000 orders processed/month, zero double entry, ROI in 11 months.
Accounting firm
Accounting
Client portal
Problem
Documents exchanged by email, dubious security, clients lost in the noise.
Solution
Encrypted client portal, document upload, e-signature, validation workflow.
Result
+40% client satisfaction, -60% inbound emails.
Deliverables

What you get, every time

No black box, no hidden dependency. You walk away with everything you need to be autonomous.

Complete source code

Git repository with full history, clean commits, feature branches.

Technical documentation

Architecture, database schemas, API endpoints, deployment guides.

Automated tests

Unit and end-to-end coverage on critical journeys.

CI/CD pipeline

Automated deployment, staging and production environments.

Monitoring & logs

Sentry, dashboards, alerts. You see what is happening in real time.

Team training

Hands-on session for your users and your IT team.

Engagement models

Fixed price, time & materials, or both

We adapt to your needs. Not the other way around.

Fixed-price project

Closed scope and budget, ideal for an MVP or a well-defined site.

  • Scoping included
  • Fixed delivery
  • 3-month support
  • 2 acceptance phases
from €8,000 excl. VAT
Request a quote
Most common
TMA / time & materials

Dedicated team running continuously for evolutions and maintenance.

  • Dedicated developer
  • 2-week sprints
  • Flexible priorities
  • Defined SLA
from €4,500 excl. VAT/month
Request a quote
Fixed project + TMA

Best of both worlds: we deliver, then we keep it alive.

  • Initial delivery
  • Tapered TMA
  • Co-built roadmap
  • Smoothed budget
custom
Request a quote
"

High-performance REST API, seamlessly integrated into our existing stack. Delivered on time, fully documented. We strongly recommend DYB.

AB
Alexandre Brun
Co-founder — Muze
FAQ

The questions we get asked

A project in mind?

Tell us about your need, we will reply within 24h with a first estimate and the next steps.

They trust us

Bâtiment Agricole
CFPH
CSVPN
Digital Sun ENR
Groupe Prieur
L'Hermitage
Jet Systems
Koesio
Ministère de l'Agriculture
Ministère de l'Éducation Nationale
Muze
Prieur
Rostang
Solaire Industriel
Tetra
Vinesio
Vipus
Watch Club Business School
Winedoze
Bâtiment Agricole
CFPH
CSVPN
Digital Sun ENR
Groupe Prieur
L'Hermitage
Jet Systems
Koesio
Ministère de l'Agriculture
Ministère de l'Éducation Nationale
Muze
Prieur
Rostang
Solaire Industriel
Tetra
Vinesio
Vipus
Watch Club Business School
Winedoze
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