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Internal tool, MVP or business platform: an application built around your processes, on a stack chosen to fit the need
When the shared spreadsheet no longer holds and no off-the-shelf tool really matches how you work, custom development starts to pay off. I design and build business tools, client portals and SaaS products, from scoping to production.
A custom application makes sense as soon as your process is your edge: business logic specific to your trade, user accounts and roles, data to cross-reference, automation that replaces hours of manual entry. Below that, a static site or an off-the-shelf tool costs less, and I will say so during scoping.
React and Next.js when server rendering and search visibility matter. TanStack (Query, Router, Table) for data-heavy interfaces: server cache, typed routing, filterable tables of thousands of rows. Node.js and PostgreSQL on the server, TypeScript end to end. The choice is settled during scoping, based on your real constraints.
The JavaScript and TypeScript ecosystem: hooks and local state, Zustand for shared state, TanStack Query for server data, TanStack Table for dense views, TanStack Router for end-to-end typed routing. On the data side, Prisma or Drizzle over PostgreSQL, with REST, GraphQL or tRPC APIs depending on the project.
Server-side rendering, automatically optimized images, per-page code splitting: your Core Web Vitals are solid from the very first deployment. On a public application it stays fast for users and easy for Google to read; on a tool behind a login, that same standard serves your teams.
Strict TypeScript, reusable components, automated tests and continuous deployment: the code is built to be picked up by anyone, whether that’s me or a future team. You’re never locked into your provider.
Each card states the exact scope of the mission, and each one has its own case study.
Quoted after scopingthen from €129/month
Book a callYour architecture choice commits your project for years. Here are the three main options and where each one makes sense.
Server rendering for SEO, client-side interactivity, API and database in the same codebase (Next.js). The default choice for an application that also needs to be found on Google.
A fully client-side interface (React, TanStack Router and Query) in front of a dedicated API. Ideal for internal tools and dashboards behind a login, where SEO doesn’t matter. Simpler to host, invisible to search engines.
WordPress, Webflow and similar tools still make sense for a purely editorial site run by a non-technical team. As soon as you need business logic, user accounts, or real-time features, custom development becomes more cost-effective.
Subscriptions, billing, data visualization, exports: the full foundation of a SaaS product, from MVP to scale.
User accounts, documents, case tracking, messaging: give your clients a secure space that takes pressure off your support team.
Blogs, catalogs, content platforms: server rendering, minimal load times, and a structure built for search rankings.
Replace shared spreadsheets with a reliable tool: inventory management, scheduling, a lightweight CRM, built exactly around your processes.
Workshops to define user journeys, prioritize features, and carve out a first deliverable scope.
Stack choices (database, auth, hosting) documented and justified, for a foundation built to last.
Builds delivered every two weeks on a staging URL. You test real features continuously.
Automated tests on critical journeys, accessibility and performance review before every release.
Go-live with continuous deployment, error monitoring, and ongoing improvements based on your feedback.
Based in Toulouse, I help startups, SMEs, and freelancers across Occitanie build their web applications. In-person workshops around Toulouse and its region, or video calls anywhere in France. A single point of contact, from scoping to production.
React and Next.js for the interface and server rendering, TanStack (Query, Router, Table) for data-heavy screens, TypeScript throughout, Node.js and PostgreSQL on the server, Prisma or Drizzle for data access. Nothing is decided upfront: the stack is settled during scoping and justified in writing, based on your SEO, real-time, hosting and team constraints.
If search visibility matters for your project, yes: server rendering with Next.js lets search engines index content easily, and Core Web Vitals are looked after from the first deployment. For an internal tool behind a login the question doesn’t arise, and the architecture gets simpler as a result.
Custom development really shines for rich interfaces: dashboards, client portals, business tools, platforms with user accounts. For a simple showcase site, a showcase build is often enough, and I’ll tell you so. That recommendation is part of the scoping phase.
Custom development is quoted individually, after scoping. I publish no starting price: on this kind of project a headline figure means nothing until the scope is set, and it always ends up misleading someone. The budget depends on the number of screens, business logic, and integrations. Upkeep is added on top, from €129/month: hosting, database, backups, monitoring and security updates. After scoping, you receive a detailed quote broken down by feature.
Yes, within the JavaScript and TypeScript ecosystem (React, Next.js, Node). Code audits, dependency upgrades, bug fixes, new features, or migration: I take over existing codebases, starting with an honest assessment before any commitment.
30 minutes to scope your project and leave with an honest recommendation, even if it’s not me.
