Our loyal service
Qraft is primarily involved in developing your application from scratch, but can also build and technically supervise your team of developers.
We develop high-performance, resilient backends to serve REST or GraphQL APIs. We rely on robust and proven technologies such as Rails or Node.js to serve sometimes more than 10,000 req/s.
For specific needs, we can also offer you microservices or Elasticsearch clusters, but you can always count on us to choose the simplest and most efficient solution!
Our backends contain all the business logic of our applications. They are systematically covered by tests (unit and end-to-end) and monitored (errors and performance).
Let's stand the test of time together.
Our aim is to guarantee you an application that not only works at a given moment, but can be improved and extended with the same agility as your product evolves. We take pride in the code we deliver, today and in 3 years' time.
Our added value
Expertise
With over 10 years' experience, we know the pitfalls of a digital project, the fads, the reliable shortcuts and the ones to avoid. Sharing our experience with you is what makes us tick.
Honesty
Zero bullshit. We advocate transparency, between Qrafters and with our customers, so that we all move in the same direction. We cultivate a written policy so that everyone can follow the project's progress in the clear light of day.
Robustness
We implement prevention methods (code reviews, unit tests, continuous deployment, reversible migrations, monitoring...) and rapid remediation in the event of a problem.
Performance
We provide the simplest solution to a given problem, using the fastest, most reliable technologies, without unnecessary gimmicks. Details are important: speed and quality are closely linked.
Our weapons of choice
Are you interested in coffee and gems? We're experts.
Our favorite arsenal
We adapt to your technical stack, but we do have a few preferences, which represent our values: performance, quality and speed.
Backend
Rails
Sidekiq
Rubocop
RSpec
Database
Posgres
Redis
Frontend
React
Material UI
Tailwind CSS
Next.js
Prettier
ESLint
Typescript
Hosting & Continuous Integration
Heroku
Vercel
Github Actions
Mobile apps
React Native
Expo
PS: Some companies using Rails as their core technology: Shopify, Airbnb, GitHub, Twitch, Coinbase, Doctolib, Swile...
In the ropes
We're also happy to work with these technologies, which are so popular with our customers.
Backend
Node.js
NestJS
Frontend
GraphQL
Infrastructure
AWS
Serverless
Devs on the front, like on the back!
Alexis and Nicolas have around ten years' experience in development and met at a fintech startup incubated by Facebook. After working together on several projects, they decided to join forces around shared values in 2020: Qraft was born.
Qraft was built around the idea that a team of talented and passionate developers should be made up of a variety of profiles from different backgrounds. Diversity is a strength: we recruit high-potential men and women who are retraining to become developers through recognized code bootcamps like Le Wagon, as well as engineers from specialized schools like Epitech.
Join us!Let's not forget the tests...



Our latest victories

Billi
billi.soSaaS application designed to simplify the management of freelance firms and interim management companies: automation of administrative tasks such as generating contracts, invoices, expense claims and activity reports.
- Stack: Rails API, Postgres, Redis, Next.js, Tailwind CSS, Scalingo, AWS
- Integrations: YouSign, Postmark

C'Evidentia
cevidentia.comOnline eyewear fitting and sales application: virtual fitting, measurements, payment of remaining costs, stock management, electronic signature.
- Stack: Rails API (REST), Postgres, Redis, Next.js, MUI, Heroku, AWS
- Integrations : Docusign, ActiveCampaign, Stripe, Postmark

easiware
easiware.comMulti-channel conversational tool to manage customer support. The easiware solution enables customers to interact with their consumers via chat, email and WhatsApp, and customer advisors to organize the entire lifecycle of a request.
- Stack: Node.js (REST + WebSockets), NestJS, Postgres, Redis, Next.js, MUI, Heroku, AWS
- Integrations : Auth0, Postmark

Embarq
embarq.frPortage salarial management application for administrators (B2B) and ported employees (B2C). Contract editing, invoice generation, electronic signature, activity reports, expense reports...
- Stack: Rails API, Postgres, Redis, GraphQL, Next.js, MUI, Heroku, AWS
- Integrations : Docusign, Upflow, Sendgrid

Bruno
hibruno.comIntelligent micro-savings based on an analysis of your spending using artificial intelligence. Bruno automatically sets aside money in savings products, but never puts you in the red.
- Stack: Rails API (REST), Postgres, Redis, Flask, NumPy, Pandas, React, React Native, Expo, Heroku, AWS
- Integrations : Budget Insight, GoCardless, Postmark