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Mladen SaricMS

Mladen Saric

Senior Developer

€650/day
Nürnberg, DE
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mladen

I am an experienced developer and digital entrepreneur with a focus on customized business solutions for the DACH market.

My strength lies in combining technical implementation with a deep understanding of commercial processes — from invoicing to EU compliance documentation.

CORE COMPETENCIES:

🛒 E-commerce & Web Development
• Shopify (Liquid, Theme Development, B2B, Apps)
• OpenCart Development & Customization
• HTML / CSS / JavaScript
• Multilingual Shops for DACH Markets

💻 Software Development
• Python (Streamlit, NiceGUI, ReportLab, SQLite)
• Custom ERP & CRM Systems
• PDF Generation (Invoices, Reminders, Reports)
• SEPA QR Code Integration
• Automated Commission Systems

📋 DACH Compliance & Legal
• GoBD-compliant Invoicing
• GPSR & PPWR Compliance Management
• Customs Tariff Number (HS Code) Management
• EU Volume Reporting (LUCID, ARA, Citeo, CONAI)
• DATEV-compatible Export

🚀 OWN SOFTWARE PRODUCTS:
I develop and market two proprietary business solutions:

① Systemic ERP v2.0
Complete accounting for SMEs in the DACH region:
Quote → Invoice → Reminder → Collections
• Multi-Status PDF (Payment Reminder, Reminder 1/2, Collections)
• SEPA QR Code on all documents
• Automatic deadline calculation & reminder fees
• GoBD-compliant archiving
• Multi-currency & EU tax logic

② Systemic Standards — Compliance Manager
Management software for GPSR & PPWR compliance:
• Digital Customs Vault (HS Codes, Certificates, Documents)
• GPSR Product Data Sheets & Dossier PDF
• PPWR Packaging Data & EU Volume Reporting
• Partners & Associates with automatic commission settlement
• Customer Master Data Sheet PDF
• Document Safe per customer/project

✅APPROACH:
✔ Clean, maintainable code — no unnecessary complexity
✔ Direct communication, short feedback loops
✔ Delivery with documentation
✔ Available in German, English, and BKS
✔ Experience with small and medium-sized businesses
  • German

    Native or bilingual

  • English

    Fluent

  • Bosnian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Systemic Standards
    Senior Developer | Shopify & Python | ERP/CRM & DACH Compliance Software
    November 2020 - Today (5 years and 8 months)
    I develop and market two proprietary business solutions:

    ① Systemic ERP v2.0
    Complete accounting for SMEs in the DACH region:
    Quote → Invoice → Reminder → Collections
    • Multi-Status PDF (Payment Reminder, Reminder 1/2, Collections)
    • SEPA QR Code on all documents
    • Automatic deadline calculation & reminder fees
    • GoBD-compliant archiving
    • Multi-currency & EU tax logic

    ② Systemic Standards — Compliance Manager
    Management software for GPSR & PPWR compliance:
    • Digital Customs Vault (HS Codes, Certificates, Documents)
    • GPSR Product Data Sheets & Dossier PDF
    • PPWR Packaging Data & EU Volume Reporting
    • Partners & Associates with automatic commission settlement
    • Customer Master Data Sheet PDF
    • Document Safe per customer/project

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Education

  • Systemic Standards

Skill set

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