Custom Web Development
Four tiers based on your needs: a showcase site with an integrated business tool, a custom e-commerce store, an internal software for your company, or a SaaS platform to commercialise.
Does this sound familiar?
The frustrations we solve every week for our clients.
Your internal tools are slowing you down
Shared Excels, Notion that lags with 5,000 rows, SaaS subscriptions stacking up. At some point, a custom tool costs less than a Frankenstein of templates.
Your clients deserve better than a Wix
Modern client portal, online booking, configurator, tracking dashboard, custom CRM... These features impossible with no-code attract premium clients.
You want to sell, not just exist
Marketplaces, SaaS, auction platforms, B2B tools with Stripe subscriptions. If you want to monetise and scale, custom is the only path.
Everything you need, nothing extra to buy
No "basic" pack that becomes "premium" next week. Everything is included.
Modern stack
React, TypeScript, Node.js, PostgreSQL: proven, performant technologies maintained for the long term.
User management
Authentication, roles and permissions, custom dashboards. Every user sees exactly what they need to.
Scalable architecture
We design your app to handle the load, even with thousands of users. Cloud infrastructure when needed.
API integrations
Connect your tool to existing services: payment (Stripe), mailing (Brevo), CRM, ERP, or any third-party API.
Advanced security
Our cybersecurity expertise applies to your developments: HTTPS, XSS/SQLi protection, security audits.
Maintenance & evolution
We stay available after delivery to fix, improve, and evolve. Your tool grows with your business.
A clear process, readable steps
From discovery to delivery, you know exactly where your project stands.
Specifications
We analyze your functional and technical needs. We write the spec sheet, user stories and wireframes together.
Proof of Concept
For complex projects, we build a POC to validate technical choices before committing to full development.
Agile development
Development by iterations. You follow progress on a test environment and can validate at each step.
Deployment & handover
Production launch, final tests, technical documentation, team training. The project belongs to you.
Specifications
We analyze your functional and technical needs. We write the spec sheet, user stories and wireframes together.
Proof of Concept
For complex projects, we build a POC to validate technical choices before committing to full development.
Agile development
Development by iterations. You follow progress on a test environment and can validate at each step.
Deployment & handover
Production launch, final tests, technical documentation, team training. The project belongs to you.
Numbers, not buzzwords
custom projects delivered since 2025
source code delivered, you own it
public: Celeste Motors and SwissMcars
generic WordPress site: only custom
Great experience with SDR Web! Complete redesign of my site + custom admin area to manage my projects: everything is smooth, fast and well thought-out. Highly recommend.
Marion Gs
Client · Google review ★★★★★
Our work
Websites that generate real results for our clients.
Our custom development packs
"From" pricing: your precise quote depends on your specs. Free audit before pricing.
Custom Site + Mini-app
Ideal for: SME wanting a showcase site PLUS a business tool
Up to 4x interest-free
Delivered in 3-5 weeks
Precise quote after specs
- 100% custom showcase site (Figma + dev)
- 1 business module: catalogue, quotes, portal, booking, tracking…
- Admin back-office for content + data
- Authentication + roles (admin / editor)
- Local SEO (Google + Maps) included
- Core Web Vitals all green, GDPR compliant
- Hosting + deployment + source code delivered
E-commerce Store
Ideal for: Brand or retailer selling online (single store, not multi-vendor)
Up to 4x interest-free
Delivered in 4-8 weeks
Precise quote after specs
- Shopify custom theme OR fully hand-coded store
- Stripe + Apple Pay + Google Pay setup
- Optimised mobile checkout (< 3 steps)
- Catalog + variants + stock management
- Product SEO + Schema.org Product
- Transactional emails (order, shipping, abandon)
- GA4 + Meta Pixel + server-side tracking (GTM)
- Source code delivered, you own it
Custom Business Software
Ideal for: Your internal software: CRM, ERP, workshop, HR platform…
Up to 4x interest-free
Delivered in 6-12 weeks
Precise quote after specs
- Complete signed specs document
- Single-tenant app (dedicated instance, no multi-client)
- Custom architecture (React/Next.js, NestJS, PostgreSQL)
- Authentication + fine-grained user roles
- Custom business modules (workflows, states, reports)
- REST API to integrate your existing tools
- Automated tests + deployment + monitoring
- Source code delivered, you own it
SaaS / Multi-tenant Platform
Ideal for: You're launching a subscription product to sell to multiple clients
Up to 4x interest-free
Delivered in 2-3 months
Precise quote after specs
- Multi-tenant: each client has isolated workspace
- Stripe Subscriptions (plans, upgrade, churn)
- User onboarding + transactional emails
- Global admin + client dashboard
- Webhooks + public API + OpenAPI docs
- Pro GDPR: DPA, audit logs, user exports
- E2E tests + CI/CD configured
- Pilotage Pro 1 month included (€549/mo after)
Everything you want to know before booking
Ready to see what it would look like with us?
15 minutes on the phone to scope your needs and propose the right solution. No commitment, no follow-up.
Slots available this week
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Custom Projects
Some requests require a tailored approach. We develop complex technical solutions for ambitious startups and SMEs.
SaaS & Business Apps
Complete web platforms with user management, payments, APIs, dashboards...
Audits & Cybersecurity
In-depth security audits, pentesting, GDPR compliance, secure infrastructure...
Automation & Integrations
Connect your tools, automate processes and save time