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Websites, Apps & AI Automation Agency in Marseille

Just dev it.

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Websites, apps, and AI automations built for growth. From strategy to production, with clear ROI.

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10+ Years of experience
50+ Missions delivered
24h Average response time
Offer format

Growth build sprint

A focused sprint to ship a conversion-ready website, app module, or AI automation with clear priorities.

Included in the sprint

  • Strategy workshop and scope lock
  • Design + fullstack implementation
  • QA, launch, and actionable handover

Kickoff

within 7 days

Delivery window

3 to 6 weeks

Replies

< 24h on weekdays

Technical team in Marseille for acquisition and execution

Based in Marseille, we work with teams across France and internationally to build conversion-focused websites, full-stack web apps, and AI automation systems connected to real operations. With 10+ years of experience and 50+ delivered missions, we help teams move from fragmented stacks to consistent execution: clearer acquisition, faster delivery, and better decision support. We combine product thinking, UX, technical architecture, SEO/GEO, and n8n automation to create experiences that generate qualified leads while reducing internal friction. If your website is under-converting, your team still handles too many manual tasks, or your roadmap is losing momentum, we can run a focused sprint with clear priorities, realistic timelines, and measurable impact from strategy to production.

Website Development App Development AI Automation n8n Workflows
How we help

Four service tracks. One growth system.

Each card leads to a dedicated service page with offer scope, targeted FAQ, and a clear next step.

Pipeline Growth

Website Development

Turn your site into a pipeline with sharper positioning, search-ready structure, and pages built to convert qualified demand.

  • Offer and messaging clarity
  • Conversion UX and page architecture
  • Technical SEO and schema foundations
  • Analytics-ready website delivery
Explore website growth service
Product Velocity

App Development

Ship product faster with a senior full-stack partner who can scope, build, and release features without stacking technical risk.

  • Feature scoping with technical guardrails
  • Frontend + backend implementation
  • API, data model, and auth alignment
Explore app delivery service
Operational AI

AI Automation

Automate repetitive workflows with AI systems connected to your stack so your team saves time and executes with fewer handoffs.

  • AI integrations tied to business workflows
  • Lead qualification and support triage automation
  • Guardrails for quality and reliability
Explore AI automation service
Workflow Reliability

n8n Workflows

Build reliable n8n workflows for CRM sync, routing, alerts, and cross-tool orchestration with proper monitoring and ownership.

  • n8n architecture standards and naming
  • Retries, fallbacks, and failure visibility
  • Automation stability at scale
Explore n8n integration service

Not sure where to start? Get a fast diagnostic and prioritized plan.

Get the free diagnostic Discuss your project scope
Website Development App Development AI Automation n8n Workflows

Free growth audit for your website, app, or AI workflow.

Get a concise action plan to increase leads, reduce manual work, and improve your technical foundations.

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What we analyze

  • Conversion leaks on your website or landing pages
  • Automation opportunities with n8n and no-code tools
  • AI workflow bottlenecks and quick wins
  • SEO + GEO opportunities for visibility in Google and AI assistants

What you get in 5 business days

  • A 10-point diagnostic with priority score
  • 3 actions to launch in the next 30 days
  • Estimated budget and implementation timeline

Get the audit by email

2 required fields. Response in 24 business hours with the best next action.

No spam. You can unsubscribe anytime.

How we work

Clear process. Fast execution.

01

Audit & scope

We define your goals, user journey, and priority outcomes before writing any code.

02

Architecture & UX

You get a clean technical plan and interface direction aligned with conversion and usability.

03

Build & automate

We deliver production-ready code plus AI automations and n8n/no-code workflows when relevant.

04

Launch & optimize

Deployment, QA, documentation, and post-launch optimization to improve conversion and operations.

FAQ

Questions about websites, apps, AI automation, and n8n.

What services do you offer?

We build conversion-focused websites, full-stack web applications, AI automation systems, and workflow integrations with n8n or no-code tools.

Can you integrate n8n with my current stack?

Yes. We design and implement n8n workflows connected to your CRM, forms, databases, APIs, and AI tools to remove repetitive manual work.

Do you also handle SEO and GEO optimization?

Yes. We optimize technical SEO, on-page structure, and AI-search readiness (GEO) so your website can rank in Google and be easier to cite by AI assistants.

How long does a typical project take?

Most focused projects are delivered in about 3 to 6 weeks depending on scope, integrations, and number of pages or workflows.

What do you include in the free audit?

You receive a prioritized diagnostic, quick wins, and a practical delivery roadmap for website performance, automation, and acquisition.

Do you work in white-label mode for agencies?

Yes. We regularly collaborate in white-label mode with agencies and product teams, with clear communication, strict deadlines, and clean handover documentation.

Team

The team behind Just Dev It Agency

Merwan Guerrib

Merwan Guerrib

Founder · Full-Stack & AI Automation

Merwan designs and builds conversion-first websites, full-stack apps, and AI automation systems for founders and product teams.

With 10+ years of delivery experience across companies like PayFit and Capgemini, he leads technical architecture, implementation quality, and production launch.

Ismaël Guerrib

Ismaël Guerrib

Co-Founder · Growth & Operations

Ismaël leads growth and operations. He structures acquisition strategy, clarifies offers, and keeps execution aligned with measurable business outcomes.

Together with Merwan, he ensures each website, app, or automation project ships with clear priorities, tight timelines, and proactive client communication.

Get in touch

Let's build your next growth system.

Tell us what you need: website, app, AI automation, or n8n/no-code workflow. We reply within 24 hours.

No spam. You can unsubscribe anytime.