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Junior DiomandéJD

Junior Diomandé

Full-Stack Developer & SaaS Architect

€250/day
Liège, BE
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Junior

Do you have a web project to launch or an application to develop? I'll take care of it from A to Z.

23-year-old Full-Stack Developer, studying AI and application development, I help companies and entrepreneurs bring their digital ideas to life — quickly, cleanly, and without getting bogged down in technicalities.

What I can bring you:
A complete web application, from backend to interface
Custom API integrations (payment, emailing, third-party services)
A functional SaaS deployed in production
Maintainable code that you can evolve
What sets me apart: I developed a complete B2B SaaS solo (electronic invoicing, Stripe, multilingual, regulatory compliance) — I know what it's like to deliver a real product, not just code.

Projects I'm working on: web applications, SaaS platforms, dashboards, automations, API integrations.
  • French

    Native or bilingual

  • English

    Conversational

  • Dutch

    Conversational

Remote only
Primarily works remotely

Experience

  • peppolhoreca
    A financial technology (FinTech) company
    TECH
    January 2026 - Today (5 months)
    Liège, Belgium
    Solo design and development of a B2B SaaS for electronic invoicing compliant with Peppol, targeting the Belgian HoReCa sector. in 6 months

    Features developed:
    - Creation, sending, and tracking of invoices via the Peppol network
    (Recommand API integration, UBL/XML generation)
    - Multi-establishment management with accounting/client rights
    - Automatic HoReCa VAT recognition 2026 by product type
    - Revenue journal, cash book, VAT declaration
    - Document scanner (OCR) and supplier import
    - Stripe subscription system with 5 pricing plans
    - Multilingual transactional emails FR/NL (Resend)
    - Company verification via BCE (KBO public)
    - Automated crons: reminders, exports, Peppol statuses

    Stack: Next.js 16, Prisma 7, PostgreSQL, NextAuth v5,
    Stripe, Resend — deployed in production on Ubuntu VPS
    Typescript Node.js Next.js PostgreSQL REST API

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