Idea to Software
A business ERP connecting job management, constraint-based scheduling, inventory, invoicing and a customer portal, with ITS Report for video inspection.
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Web development · SaaS · Software · AI
I’m Sébastien Descloux, a freelance full-stack developer based in Montlhéry, France. Since 2013, I have worked on websites, SaaS products and business applications. I support European and international teams remotely, with a direct link between business decisions and the technical work.
The person behind SDX Development
You work directly with the person who designs, develops and maintains your website or application. My role is to understand your business and turn that understanding into a useful tool: a clearer website, a smoother enquiry process, a shared view of your data or less repetitive work for your team.
Remote projects need clear communication. We agree on priorities, review working versions and record decisions as the project moves forward. This gives you a practical way to follow progress, whether your team is in Europe or further afield.
I also serve as CTO at Groupe WE, where I develop digital products for field operations. That experience informs my work on websites, business software, SaaS applications and AI systems connected to real workflows.
Based in France, working across borders
A successful remote project starts with a shared understanding of the work. Before development begins, we define the main use cases, the scope, the budget and the delivery stages. We also agree on meeting times that work across our time zones, so you know when we can review progress together.
During the project, demonstrations and written feedback help turn requirements into concrete decisions. You can see what has been built, test the important workflows and raise questions before the next stage. If the product serves several countries, we can plan for languages, currencies, content and integrations during scoping, according to your actual needs.
The starting point may be a new website, a website redesign, custom business software or a SaaS product or MVP. In each case, the aim is a manageable first release and a clear plan for what follows. Tell me where your team is based, what you need to achieve and the constraints we should account for.
A business ERP connecting job management, constraint-based scheduling, inventory, invoicing and a customer portal, with ITS Report for video inspection.
ITS Report on inspection equipment: local video, captures and reports, with guided navigation and an interface built for field operators.
An IoT monitoring platform connecting equipment data, operational incident reports, device commands and resolution tracking.
From field data to investigation and resolution tracking, the platform connects the operational workflow.
Explore the project →
Websites for several group companies, connecting their field operations, industrial services and digital tools through clear user journeys.
Résiliner also has an administration interface for pages, media, menus and publishing, with dedicated journeys for its method and network development.
Websites that explain a company’s services, make its expertise easy to understand and help prospective customers get in touch.
Génération Location connects its commercial website with a manageable catalogue and a dedicated module for adding rental vehicles.
I treat each project as a product that will keep evolving. Interface design, architecture, data and deployment are considered together throughout the work.
One technical point of contact, from initial scoping through launch and subsequent improvements.
I contributed to earlier versions of these websites. The versions online today have since been updated without my involvement; these references describe my contribution at the time, rather than responsibility for their current implementation.
Technology chosen to fit the project
PHP, JavaScript, jQuery, Python and Node.js are among the technologies I use most often. The choice depends on your requirements, existing systems, security constraints and the expected lifespan of the product.
The goal is a solution your team can use and maintain: saving time, making a process more reliable, clarifying data or making a service easier to access.
Support after launch
Websites and applications need attention over time. Dependencies change, access permissions accumulate and business needs evolve. I review existing systems, investigate incidents and plan improvements to help keep your tools reliable.
Has your website been defaced, started redirecting visitors or displayed suspicious content? I begin by investigating the entry point, code and access records, then remove malicious components, restore the site in a controlled way and address the weaknesses identified.
A technical review of exposed services, accounts, permissions, updates, backups and weaknesses. Recommendations are prioritised by risk and business impact.
Investigation of malicious code, backdoors and exploited vulnerabilities, followed by remediation and recommendations to reduce the risk of another incident.
Targeted fixes, updates, monitoring and further development to keep your software useful, maintainable and aligned with changing needs.
Business softwareA business ERP connecting job management, constraint-based scheduling, inventory, invoicing and a customer portal, with ITS Report for video inspection.
Read the case study →WebsiteAn industrial website with a custom CMS: technical content, the C.A.R.E. method, project references, franchise information and diagnostic enquiries.
Read the case study →SupervisionAn IoT monitoring platform connecting equipment data, operational incident reports, device commands and resolution tracking.
Read the case study →Tell me about the goal, the context and the constraints. We can define a useful first scope.
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