Websites · SaaS & MVPs · Business software · AI

Custom websites, SaaS & business software for European and international teams

SDX Development builds professional websites, SaaS products and custom business software for companies across Europe and international markets. Based in France and working remotely, each project starts with a concrete business goal: generate qualified enquiries, launch a digital product or simplify internal operations.

Discuss your projectExplore case studies
  • Since 2013
  • Full-stack
  • Business applications
  • AI & RAG

Web development & business tools

A useful website today. A solid foundation for tomorrow.

Present your business, generate enquiries, centralise data or automate a process: the project starts with your objective, then brings together the content, interface and technology needed to achieve it.

  1. 01
    Define the need

    Audience, goals, content, users and real constraints.

  2. 02
    Build the right solution

    A website, redesign, web application or business tool.

  3. 03
    Keep improving

    A manageable, maintainable foundation that can grow.

Four ways to move your business forward.

WEB

Professional website development

Credible business websites, catalogues and e-commerce, with manageable content and a structure that makes your offer clear.

Explore custom web development →
SaaS

Custom SaaS & MVP development

Online products with accounts, roles, subscriptions, APIs and a core workflow designed to test demand and develop the market.

Explore SaaS & MVP development →
APP

Custom business software

Management tools, extranets and web applications that connect your users, data and internal processes.

Explore business software →
UP

Website redesign & improvement

Modernise an existing website while reviewing useful content, search visibility, performance and security.

Plan a website redesign →

Products built around real work.

One direct technical contact

From a business website to a working software product, with continuity at every step.

Since 2013, Sébastien Descloux has designed websites, interfaces and software for real working environments. Based in France, I work with European and international teams through remote workshops, regular demonstrations and written decisions, from discovery to launch and further development.

  • A clearly explained solutionUnderstand the intended use before discussing the technology.
  • Content your team can manageUpdate the agreed content areas through the CMS without commissioning every routine change.
  • SEO & performanceTechnical SEO, mobile layouts and page speed are part of the foundation.
  • Room to developAPIs, customer areas, automation or AI can extend the product when a concrete need justifies them.

Latest articles

A website to create, a workflow to simplify or a product to improve?

Based in France, I support European and international businesses remotely. Share your activity, goal, timeframe and team location so we can arrange a useful first discussion.

Discuss your projectView pricing