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Olivier HernanzOH

Olivier Hernanz

Application Developer

€600/day
Tarbes, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Olivier

Do you have an app idea but no technical team to bring it to life? That's exactly what I do.

I design, develop, and deploy complete applications — web, mobile, and desktop — from the initial mockup to deployment on the Play Store, App Store, or your server. A single point of contact, from scoping to go-live.

What sets me apart: I deliver fast and I see things through. Where a team and several months are often required, I transform a business need into a truly usable product, leveraging the latest AI tools to accelerate without compromising on quality.

Notably, I developed WINDIO, a real-time weather forecasting application with its own calculation engine, as well as technical business tools (calculation, quoting, parametric design) and automation systems.

I can assist you with:

a MVP or a first version of an app to launch quickly
a custom web, mobile (iOS/Android), or desktop application
a business tool (calculation, quoting, management, dashboard)
automation and integrations (API, n8n, AI)
production, hosting, and app store deployment
Tell me where you want to go — I'll handle all the technical aspects.
  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Olivier Hernanz
    Windio.app
    SPORTS
    January 2026 - Today (7 months)
    Tarbes, France
    I designed, developed, and launched Windio, a real-time weather application for riders (kitesurf, windsurf, wingfoil): a global map of over 1,700 spots across 27 countries, with live wind, 7-day forecasts, tides, swell, custom alerts, and a community session log. The app is available in 3 languages (FR/EN/ES), on the web (PWA), and on Android (Google Play).

    I managed the project end-to-end, alone:

    Product & Design — defining the vision (a single global app rather than one per region), complete design system, user experience tailored for practitioners (spot practicability score, wind direction vs. coastline orientation, animated wind and ocean current layers à la Windy, 3D globe view).

    Technical — JavaScript frontend (Leaflet, MapLibre), serverless backend Cloudflare Workers (edge caching, KV, crons), self-hosted weather server (Open-Meteo on Docker on VPS: GFS, AROME 1.5 km, ICON-EU models, automated hourly synchronization), Supabase (authentication, database, RLS), Capacitor for the Android app, Firebase push notifications, full GDPR compliance. I develop with an AI-assisted workflow (Claude), which allows me to deliver quickly with a high level of quality.

    Growth — multi-network launch strategy (Instagram, Facebook, TikTok, LinkedIn), automated content campaigns (n8n), founders program, calibration of forecasts against real wind sensors to build user trust.
    JavaScript PWA Supabase/PostgreSQL Mapping (Leaflet/MapLibre) Supabase/PostgreSQL · REST API · Docker · Android (Capacitor)
  • Olivier Hernanz
    Manager
    SPORTS
    February 2008 - Today (18 years and 6 months)
    Tarbes, France
    Neova — application development studio (France).

    We design and deliver iOS/Android/PWA mobile apps, B2B SaaS, and custom dashboards. What sets us apart:

    • We commit to a fixed price for a result, not a daily rate.
    • 100% of the code, accounts, and infrastructure belong to you — zero lock-in.
    • A single point of contact, from scoping to production.
    • We say no if the idea doesn't hold up, and we propose a cheaper version if one exists.

    We always start with a free 30-minute diagnosis: feasibility, realistic budget, alternatives. neo-va.com

    React, Next.js, Node.js, TypeScript, React Native, iOS, Android, PWA, B2B SaaS, Dashboards, API / integrations, Supabase, PostgreSQL, AI & automation, UX/UI
    Mobile Development · Web Development / Applications · SaaS · Custom Software · Data / Dashboards
    Next.js PWA React Native Mapping (Leaflet/MapLibre) · Weather Data · Automation (n8n) Product Management · JavaScript · PWA · Cloudflare Workers · Supabase/PostgreSQL ·

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