Total transparency
You have full visibility on progress, technical decisions and costs at every stage. Regular demos, direct exchanges with the developers, no gray area between the brief, delivery, and the end of our SLA/TMA.
Robust and scalable React & Next.js / React Native hybrid architectures that evolve with your business. Real agility and cutting-edge technical guidance, from product vision to production deployment.
Asynchronous: A word developers know well, code that runs in parallel. We integrate into your work methodology.
We don't follow market conventions, we study them, question them, and challenge them. Where many settle for assembling others' building blocks, we prefer to forge our own tools.
Passionate web developers, a unified stack, shared rigor, a common requirement; uncompromising Made in France know-how.
Paris, 2023. Founded on one observation: web development deserves better than throwaway code billed at premium prices.
Code industrialization is the most underestimated challenge in the digital world.
For a decade, I watched the same scene repeat itself: Technical foundations are constantly reinvented, every project recreates the same functional building blocks, solves the same R&D problems and redefines patterns that already exist elsewhere. The real bottleneck of modern digital development lies in the lack of code industrialization, a cost paid by everyone at every stage of project growth.
Final products often emerge after invisible technical debt, accumulated while building the foundations. For SMEs, custom-built infrastructures represent a high financial risk, pushing them toward CMS or page builders to limit costs. In large enterprises, this generates a massive redundancy of uncapitalized features, with repeated mistakes and budgets wasted on solutions that already exist internally.
Non-industrialized code, unstructured knowledge, non-shared foundations — this holds back every business function, turns infrastructure into a risk, and caps the company's overall performance. Conversely, tech-led companies like Uber or Google rely on industrialized standards and consensus, enabling multiple teams to build on a common base for optimal business impact.
At Async Code, we flip the equation: we start from the finished product and the business need, with foundations, building blocks and architecture ready to go, obsessed with the transmissibility of knowledge. Beyond an app, we forge a proprietary industrial base, freeing companies to focus on added value.
Asynchrony fully comes into play — need becomes reality.

Every company is different. Some of your challenges are universal, others are more specific to your industry.
Diagram illustrating common and specific services offered to startups, SMEs and large enterprises, with overlapping areas representing {shared} services.

Regardless of the project, the budget or the client. These three principles define how we work at Async Code since day one.
You have full visibility on progress, technical decisions and costs at every stage. Regular demos, direct exchanges with the developers, no gray area between the brief, delivery, and the end of our SLA/TMA.
We don't glue existing bricks together, we build our own tools. 2 years of R&D, a homegrown framework, shared components. Every client benefits from the work done for all the others.
We code because we love it. Clean architecture, performance, automated tests. Not code that sort of works, but code we're proud to show and that you'll be able to maintain in 5 years.

Your budget funds your business, not your stack.
Robust and scalable React & Next.js applications. Optimized load times, SEO/SEA-ready, multilingual LTR/RTL, RGAA accessibility, GDPR compliance: every technical component is a business lever built in natively. Designed to perform, indexed to be found, ready to address all your markets.
Robust and scalable React Native applications. An industrialized architecture that deploys on mobile, desktop and TV from a single controlled codebase. Native platform features, integrated from day one. A single development cycle, a consistent experience on every screen, and drastically reduced maintenance costs.
A backend architecture that doesn't need rebuilding for each project. Multi-tenant, configuration-driven, 7 security layers, complete auth, multilingual LTR/RTL. Designed to integrate, designed to last.
Zero manual deployment, zero blind spots. Your environments are automated, monitored, scalable and traceable. Infrastructure becomes an accelerator.
Restoring technical consensus, unifying practices, industrializing what needs to be. The result is concrete: reduced maintenance costs, faster deliveries, teams that produce instead of reinventing.
Our method, your visibility
We listen to your business before talking tech. Technical audit, needs analysis, scope definition.
Technical architecture, functional mockups, fixed budget. You approve everything before we write a single line.
Short iterations, regular demos. You see the product progress and give your feedback continuously.
Automated tests, performance audit, security review. Nothing goes to production without full validation.
Zero-downtime deployment, team training, active monitoring. We're still here after delivery.

Reactive interfaces

SSG / SSR / App Router

Secured APIs
Scalable NoSQL
Isolated environments

Automatic scaling
Versioned infrastructure
JavaScript end to end. A proprietary framework born from 2 years of R&D where every component benefits from the work done on all the others. Strong consensus and standards to industrialize our expertise and constantly improve.
See the architecture in detailEvery project ships natively compatible with AI engines. To go further, we connect and automate, on demand.
Structured data, semantic metadata, Schema.org and Open Graph markup: every page is designed to be understood by both Google and AI search engines. Your content ranks, gets cited, and feeds the generated answers.
Implementation of the llms.txt standard to expose a structured version of your site to language models. Your pages become reliable sources that AI can parse, summarize and faithfully reproduce.
Connecting your products to the APIs of major models. OpenAI, Anthropic, Mistral. Generation, classification, extraction, conversational analysis: intelligence embedded in your business workflows.
Agent architecture capable of orchestrating complex actions on your systems via the MCP protocol. Booking, order management, customer support — your tools become AI-controllable.
An interactive form, price ranges, high-tech at a fair price
Every project is unique. We tailor our response to your actual need.
Describe your need, we'll get back to you within 24h.
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