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Numinam

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Woluwe-Saint-Lambert, Belgium
Freelance developer, fast websites, SEO and GEO
I'm Sébastien Balieu, a freelance developer. I help founders and decision-makers launch web sites and products that load fast, rank well on Google, and are visible in the responses of generative AI like ChatGPT, Perplexity, or Gemini. A website is useless if it's slow or invisible. I build infrastructures designed from the start for performance (top Core Web Vitals), classic technical SEO and GEO, and optimization for citation by AI response engines. I specialize in: Fast showcase websites and platforms, with a lightweight architecture and minimal loading times Mobile applications and internal applications, for digitizing processes or launching a product Technical SEO, with a clean semantic structure, structured data, and controlled indexing GEO (Generative Engine Optimization), content, and structure designed to be picked up and cited by generative AI Automation and applied AI, chatbots, content generation, workflows integrated with your existing tools Why work with me You speak directly with me, no intermediaries or information loss Launch in weeks, not months Each site is built to be fast, indexable, and readable by AI Results are measured concretely: conversion, organic visibility, and AI visibility References Startups and innovative SMEs, notably Coddy, Zetes, Heat Me, Repos Production, Harmonia... If you're looking for someone capable of delivering a fast and visible website, on Google and on AI, let's talk.
1 person in their team
Speaks English, French
1 project in their portfolio
Works remotely across the globe
Sortlist member since 2018
Founded in 2016
1 award conferred
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Services

9 services offered by Numinam

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  • Description
    Your website has 3 seconds to make an impression. We create fast, stunning sites that convert visitors into leads—optimized for Google, mobile-friendly, and designed to grow with your business. From landing pages to full corporate sites, we make your first impression count.
    Skills in Website Creation (23)
    Content StrategyWeb Hosting ManagementBack-End DevelopmentFront End DevelopmentLanding Page DesignResponsive WebsiteSmall Business Web DesignWebsite DevelopmentWebsite OptimizationWeb Content+13
    Work in Website Creation (1)
    Coddy Website - Website Creation
    Client in Website Creation (1)
    CoddyEntertainment & Events | international
    Learn more about Website Creation
  • Description
    Web apps that feel like magic. We build powerful, lightning-fast platforms that scale from 10 to 10,000 users without breaking. Whether it's a SaaS tool, internal dashboard, or customer portal—we deliver apps that work flawlessly across every device.
    Skills in Web Application (4)
    Progressive Web AppReact DevelopmentVueJS DevelopmentWeb Development
    Learn more about Web Application
  • Description
    Your online store should sell while you sleep. We build e-commerce platforms that convert visitors into buyers—with seamless checkout flows, AI-powered product descriptions, and automated inventory management. Launch faster, sell more, stress less.
    Skills in E-commerce (17)
    eCommerce ConsultingConversion Rate OptimizationeCommerce DevelopmentE-Commerce HostingeCommerce Web DevelopmentOnline storeEcommercePayment Gateway IntegrationDigital CommerceEcommerce Solutions+7
    Learn more about E-commerce
  • Description
    Generic software slows you down. We build custom solutions that fit your exact workflow—whether it's a complex backend system, API integrations, or modernizing legacy code. Fast, scalable, and built to evolve with your business.
    Skills in Software Development (13)
    CRM ConsultingDevOpsFull Stack DevelopmentLaravel DevelopmentNodeJS DevelopmentSoftware LocalizationSoftware ArchitectureCloud ArchitecturePHP DevelopmentAPI Development+3
    Learn more about Software Development
  • Description
    Stop wasting hours on repetitive tasks. We build AI systems that handle customer support, generate content, and automate workflows—so your team can focus on growth. From intelligent chatbots to custom automation tools, we deliver AI solutions that actually work (and pay for themselves in weeks, not months).
    Skills in Artificial Intelligence (21)
    AI DevelopmentChatbot DevelopmentDeep LearningNatural Language ProcessingMachine LearningVirtual AssistantSpeech RecognitionAI ExpertiseChatGPT ConsultingAI Strategy+11
    Work in Artificial Intelligence (1)
    Coddy Website - Artificial Intelligence
    Client in Artificial Intelligence (1)
    CoddyEntertainment & Events | international
    Learn more about Artificial Intelligence
  • Description
    Beautiful design is worthless if users can't figure it out. We create interfaces that look stunning AND convert—backed by real user behavior data. Every pixel serves a purpose: guiding visitors from curious to convinced to customer.
    Skills in Ergonomy (UX/UI) (25)
    Design ThinkingConversion OptimizationResponsive WebsiteUsability TestingWireframe DesignMobile App UI DesignUser ExperienceDashboard DesignPayment Flow OptimizationStory Mapping+15
    Work in Ergonomy (UX/UI) (1)
    Coddy Website - Ergonomy (UX/UI)
    Client in Ergonomy (UX/UI) (1)
    CoddyEntertainment & Events | international
    Learn more about Ergonomy (UX/UI)
  • Description
    Your customers live on their phones. We build mobile apps that keep them engaged—fast, intuitive, and impossible to uninstall. From MVP to full-scale apps with thousands of users, we handle iOS, Android, and everything in between.
    Skills in Mobile App (21)
    Android App DevelopmentMobile App DesignApp LocalizationChatbot DevelopmentMobile CommerceApp Store OptimisationPush Notification ServiceHybrid Mobile App DevelopmentiOS App DevelopmentMobile App Publishing+11
    Learn more about Mobile App
  • Description
    Building features nobody uses? We challenge your assumptions and help you build what users actually need. From product strategy to launch execution, we bring technical expertise + business acumen to turn your vision into a product people love (and pay for).
    Skills in Product Management (16)
    Product DesignProduct LaunchingProduct MarketingProject ManagementAgile MethodologyMinimum Viable ProductProduct DiscoveryProduct ExplorationTarget Market SelectionProduct Development+6
    Learn more about Product Management
  • Description

    No description provided for this service.

    Work in Email Marketing (1)
    Coddy Website - Email Marketing
    Client in Email Marketing (1)
    CoddyEntertainment & Events | international
    Learn more about Email Marketing
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Team

1 member in Numinam's team

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StoryReborn after building tools for one of the world's leading escape game companies. Now back to first love: developing cutting-edge web solutions powered by AI. From gaming innovation to business automation—same passion, bigger impact.
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Awards

Numinam was awarded 1 time

Fundraising2021-12-01

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Contact

Contact details of Numinam

Details

  • HeadquarterNuminam (ex One More Pixel), Avenue des Pléiades, Woluwe-Saint-Lambert, Belgique