Your budget should fund your business, not your stack.

We built the framework we wish we'd found. Architecture, security, SEO, infrastructure: everything others rebuild with every project is already there for us. Your budget funds your business, not our plumbing.

Web Applications

React & Next.js, minimal server rendering, static generation for crawlers, dynamic rendering for your users.

Whether you're launching a showcase site, an acquisition platform, or a business tool — the foundation is the same. Your pages load in under a second, Google indexes you from day one without plugins, and your analytics are natively wired in. Going international? Multilingual LTR/RTL and RGAA accessibility are built into the first sprint, not pushed to V2. Handling user data? RGPD compliance and Consent Mode v2 are in place before your first visitor lands. Dealing with data, algorithms, real-time processing, or complex visualization? The architecture is designed to absorb it. And when your traffic grows 10×, it handles it — no rewrite, no panic. Your app is built to last and to scale with you.

  • Native SEO/SEA, Google Analytics & built-in performance monitoring: you measure what matters from day 1
  • Multilingual LTR/RTL, RGAA accessibility: every market, every user, zero friction
  • RGPD compliance & Consent Mode v2: zero legal debt, zero surprises
  • Data, algorithms & real-time processing: your data becomes a product, not a backlog

Multi-platform Applications

One React Native codebase, one team. Your iOS, Android, desktop, and TV app ships at the same time, on the same budget.

You have a web product that works and you want to reach your users on mobile? The app shares the same backend, the same business logic, the same Design system. A fix or a feature deploys everywhere at once. Got field requirements? Geolocation, offline mode, biometrics, push notifications — native capabilities are built in from the start, not grafted on in V2. Targeting the living room, the bedroom, the office? Desktop and TV are covered by the same architecture. No platform gap, no double maintenance, no second vendor. We've shipped this architecture on VOD projects with millions of users. It holds.

  • iOS, Android, desktop, TV: one development cycle, all your platforms covered
  • Push notifications, biometrics, geolocation, offline mode: native capabilities are there, not simulated
  • Shared backend with your web app: one fix, one deployment, all platforms up to date
  • Consistent user experience on every screen, every OS

Backend & API

Server architecture conditions everything your users see: speed, security, the ability to absorb growth without rewriting everything.

Your users log in, pay, interact with your data? Full auth, 2FA, AES-256 encryption, webhooks — all natively wired. You have multiple products, multiple brands, multiple markets? The architecture is multi-tenant and configuration-driven: every building block is isolated, every service is independent, adding an endpoint is a single config line. Dealing with data challenges, algorithmic processing, or complex integrations with your existing systems? The backend is designed to plug in, not to live in a silo. We've poured years of R&D into it so you don't have to think about it. Your backend runs, scales, and lets you focus on your product.

  • Multi-tenant & microservices: your systems are organized, every building block is independent and replaceable
  • Full auth, 2FA, AES-256 encryption: security is native, not a patch
  • Configuration-driven: adding an endpoint is a config line, not a sprint
  • Authentication, payments, webhooks: the foundations are already wired

Consulting & Advisory

Your systems are fragmented, your teams solve the same problems in parallel, your technical debt piles up in silence.

Don't know where to start? We audit your existing stack, map the debt, and deliver a costed action plan. You have a project but no technical direction? We frame the architecture and the product before anyone writes code — to avoid wasted sprints and burned budgets. Need a CTO but don't have the budget or timing to hire? We embed on an ongoing basis, set the standards, and align the teams. The outcome is concrete: reduced maintenance costs, faster delivery, teams that ship instead of reinventing. And when we leave, the knowledge stays.

  • Technical audit: diagnosis of your existing stack, debt mapping, costed action plan
  • Product & architecture framing: structure before anyone codes, avoid wasted sprints
  • Outsourced CTO: clear technical direction, ongoing, no hiring required
  • Standardization & industrialization: your practices become a competitive edge, not a bottleneck

DevOps & Cloud

From commit to store, everything is automated. Tests, build, deployment. Zero manual intervention, zero blind spots.

Shipping often? The pipeline absorbs every release with zero downtime — your users notice nothing. Traffic exploding? Horizontal scaling adapts automatically, no intervention, no panic. Want to sleep soundly? Monitoring detects anomalies before your clients do, and your environments are identically reproducible. Every commit, every build, every deployment is traceable and auditable. Infrastructure is no longer a concern — it's an accelerator.

  • Zero downtime: every deployment is invisible to your users
  • Automatic horizontal scaling: your app grows with your audience, no intervention needed
  • Proactive monitoring: we detect anomalies before your clients do
  • Versioning & traceability: every commit, every build, every deployment is auditable

Our method, no surprises.

Before writing a line, we challenge. The need, the scope, the risks. We eliminate what doesn't add value, we anticipate what could break. You leave with a clear technical plan and a fixed budget. Because a well-scoped project costs less for everyone.

During development, you have access to a preview environment updated continuously. The code is yours from day one, hosted on your repository, documented, delivered with full access. If tomorrow you want to move forward without us, you can.

Discovery

MonitoringScoping

We listen to your business before talking tech. Audit of existing systems, needs analysis, constraint mapping, identification of quick wins and risks. We don't propose anything until we understand what creates value for you and what holds it back.

Proposal

ArchitectureBudget

Technical architecture, functional mockups, stack selection, fixed budget. Every decision is justified, every cost is transparent. You validate the scope, timeline and budget before we write a single line. No surprises along the way, no silent drift.

Development

DemosFeedback

Short iterations, regular demos, direct access to the team. You see the product progress in real time and give your feedback continuously. Every sprint delivers functional value, not promises. The backlog evolves with your input, not behind closed doors.

Tests & QA

Unit testsE2E

Automated tests, performance audit, security review, accessibility testing. Every feature is validated before it touches production. We don't ship code that sort of works — we ship code we can prove.

Launch & Follow-up

DeploymentSupport

Zero-downtime deployment, team training, complete documentation, active monitoring. Going live isn't the end of the project, it's the beginning of the product's life. We stay after delivery — we monitor, optimize, and hand over knowledge.

Tell us more about you

An interactive form, price ranges, high-tech at a fair price

About us
Configuration
Pricing

What are we building together?

Every project is unique. We tailor our response to your actual need.

Start your project

Describe your need, we'll get back to you within 24h.

contact@async-code.fr
Name*
Company / Project
*
Message

Ce site est protégé par reCAPTCHA
lesRègles de confidentialité et Conditions d'utilisationde Google s'appliquent.

Frequently asked questions