Build.
Custom apps, SaaS, custom CRM: real TypeScript code, not limiting no-code.
- Timeline
- 12 to 24+ weeks
- Disciplines
- 4 in play
- Cases
- 3 linked
Definition · Service 03
Build is the service for ambitious projects: complex web applications, SaaS, custom CRM, bespoke e-commerce, business platforms. Architecture designed for performance and maintainability, modern TypeScript stack, long-term support.
About this service
Your project goes beyond a marketing site. You need a complex web application, a SaaS for your product, a custom CRM tailored to your business, an e-commerce that breaks out of Shopify templates, or a business platform integrated with your existing tools. The Build service is designed for exactly that: architecture optimised for performance and maintainability, modern TypeScript stack (Next.js + Payload + Supabase), automated tests, continuous deployment, long-term support. No proprietary framework locking you in, no no-code capping you at 80%. Real, maintainable code, deployable anywhere.
Who it's for
This service is right for you if :
Target profile
Growing startups with product needs
Target profile
Scale-ups with a stack to industrialise
Target profile
SMEs with specific business requirements
Target profile
Associations and institutions with large editorial volumes
Everything included
The scope, in detail.
Architecture.
5 items- Functional and technical specifications
- Data modelling (Postgres + Supabase)
- Route plan and cache strategy
- Infrastructure choice (Vercel, Cloudflare, AWS)
- 6 to 12-month technical roadmap
Development.
6 items- Next.js 16 + React 19 front-end
- Payload CMS 3 + Supabase back-end
- Custom business modules (CRM, accounting, orders, etc.)
- Multi-level authentication and granular access rights
- Third-party API integrations (Stripe, Resend, etc.)
- Automated tests (unit + e2e)
Performance & quality.
5 items- Lighthouse 95+ and green Core Web Vitals
- WCAG 2.2 AA accessibility
- Sentry monitoring + alerts
- CI/CD with preview deployments
- Full technical documentation
AI if relevant.
5 items- Conversational agents (Claude, GPT)
- Personalised content generation
- Semantic search (RAG)
- Automatic moderation
- Cost and quality guardrails
Support.
4 items- 2-week sprints with client demo
- Shared read-access GitHub repo
- Dedicated project Slack or Discord
- Ongoing maintenance plan after launch
Method
The project, step by step.
6 defined phases, each with its timeline. Every phase delivers a validated output before moving to the next.
Product brief.
Weeks 1-3Workshops with the team, process mapping, entity modelling, module prioritisation. Functional and technical specifications.
Architecture.
Weeks 3-4Detailed technical plan, infrastructure choice, Postgres modelling, coding conventions, CI/CD setup.
Iterative build.
Weeks 5-202-week sprints with continuous delivery on staging. Client demo at each sprint end, prioritised adjustments.
Tests & QA.
Weeks 16-22Unit, end-to-end, load and accessibility tests. User acceptance testing with the internal team. User and technical documentation.
Deployment.
Weeks 22-24Data migration if applicable, progressive production rollout, team training, monitoring activated.
Maintenance.
OngoingOngoing maintenance on a monthly plan: fixes, optimisations, new features, security updates.
What you get
- Bespoke.100% fitted to your business
- Zero.proprietary lock-in
- 95+.Lighthouse in production
How we work together
2-week sprints, client video demo at each sprint end, dedicated Slack or Discord for daily exchanges. Read-access GitHub repo for full transparency. Adjustments prioritised in sprint reviews.
Disciplines in play
Everything under one roof..
- Custom sites & applicationsWeb development.Modern Next.js, Payload, Supabase stack. Performance, SEO, and accessibility built into the code.
- Web art directionWeb design.UX and UI in the service of useful, accessible, and desirable interfaces.
- Agents & automationsAI integrations.AI in your workflows: agents, generation, qualification, research.
- Independent diagnosisAudit & consulting.An external perspective on your site, brand, or strategy. No commitment required.
Related cases
In real conditions..
- TC2026
Tous Concernés.
From four scattered tools to a single CRM to run every campaign in France.
- CD2026
Conte de Faits.
From a self-funded WordPress to a Next.js + all-in-one CRM stack: HubSpot, Brevo, Kinsta and SendPulse replaced.
- SV2026
Sk:vr by Studjoow.
An SEO and GEO audit in 10 seconds, powered by 12 years of field experience.
FAQ
Questions I get asked..
Why not no-code (Webflow, Bubble)?
No-code is excellent for validating a product quickly. But for an ambitious project that must evolve, scale, integrate business modules, and last 5 to 10 years, custom code remains more cost-effective. Studjoow builds in standard TypeScript, with no lock-in.
Is the code portable?
Yes: everything is standard Next.js + TypeScript, deployable on Vercel, Cloudflare, AWS, Netlify, or self-hosted with Docker. No proprietary framework. If you switch providers, any Next.js developer can pick it up.
How many people work on the project?
Studjoow is an independent studio. On Build projects, John Houzi leads architecture and development. For larger projects, senior developer partners are brought in. You always have a single point of contact.
What about maintenance after launch?
Ongoing maintenance on a monthly plan or one-off interventions. Since the code is standard and documented, any Next.js developer can take over. Studjoow does not impose its own continuation.
What level of client involvement is expected?
One to two hours per week on average: sprint review, demo feedback, product decision sign-offs. More in the briefing phase (1 to 2 days of workshops), less during pure build.