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Custom web apps, from POC to production -- built in-house.

INYSTER designs and develops custom web applications for businesses that need more than off-the-shelf software. We deliver POCs in 2-4 weeks and MVPs in 4-8 weeks, all built in-house by a senior architect.

Our services include custom web application development (business tools, portals, dashboards), business process automation (n8n workflows, AI/LLM integration), and ongoing support & maintenance under SLA.

Tech stack: Node.js, React, Java, Python, PHP, Docker, n8n, LLM/AI.

No subcontracting, no offshore teams — the client owns 100% of the source code. Industries served: pharmaceutical, retail, sports, and business services. 100% remote, France-wide.

France France
66 Avenue des Champs-Elysees, Paris, Paris 75008
+33646861235
$100 - $149/hr
Freelancer
2021

Service Focus

Focus of Software Development
  • Java - 10%
  • PHP - 5%
  • Javascript - 5%
  • Python - 10%
  • Node.js - 20%
  • Laravel - 5%
  • ReactJS - 15%
  • GraphQL - 3%
  • Linux - 1%
  • MongoDB - 1%
  • React Redux - 2%
  • Redis - 2%
  • Swagger - 1%
  • TypeScript - 15%
  • API Development - 5%
Focus of Mobile App Development
  • Web Apps - 100%
Focus of Artificial Intelligence
  • AI Integration & Implementation - 60%
  • AI Agent Development - 40%
Focus of Web Development
  • HTML5 - 20%
  • CSS3 - 10%
  • Nginx - 10%
  • React Router - 60%

Industry Focus

  • Healthcare & Medical - 30%
  • Retail - 25%
  • Business Services - 15%
  • Information Technology - 15%
  • Travel & Lifestyle - 15%

Client Focus

50% Small Business
40% Medium Business
10% Large Business

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