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Nathan Le RayNL

Nathan Le Ray

Business software, automation & AI for SMEs

€1,150/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nathan

I help SME/VSE leaders transform tedious processes into simple, reliable business tools used daily.

The starting point is rarely "build an application." It's more often: too much Excel, too much double data entry, scattered information, manual quoting or invoicing, teams wasting time on low-value tasks. My role is to understand the business, define the real need, and then build the tool that saves time without adding complexity.

What I handle:
- Business diagnosis and prioritization;
- Designing useful workflows, not just screens;
- Custom software development;
- Automating repetitive tasks;
- Integrations with your existing tools;
- Hosting, maintenance, and upgrades.

Recent examples:
- SOS Médecins Brest: +30% calls handled in the first year, tool in use since 2014;
- SOFIDIAL: Multitenant ERP and e-commerce stores, ~90% faster store creation, automated invoicing and accounting;
- MyWAI: AI platform for creating biographical books, from collecting memories to printing;
- EggFlow: Agricultural ERP for traceability, delivery, and invoicing.

AI is part of my toolkit when it serves a real need: qualifying data, speeding up writing, assisting workflows, reducing data entry. The same logic applies to electronic invoicing in 2026: the goal is not to "connect a standard," but to receive, reconcile, and process invoices in your software without unnecessary re-entry.

You remain the owner of your software. I build with standard, maintainable technologies, but the main focus remains the same: making your business more visible, faster, and less dependent on internal workarounds.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Nantes (up to 10km), Brest (up to 50km), Rennes (up to 10km), Vannes (up to 10km)

Experience

  • Manda
    Ruby on Rails Engineer | AI & Process Automation
    SOFTWARE PUBLISHING
    November 2025 - Today (9 months)
    Ruby on Rails mission focused on automating business processes and continuously improving an existing application.

    Working on product evolutions, workflow reliability, integrations necessary for operations, and progressive delivery within an already live application context.
  • SOFIDIAL
    Printing ERP & E-commerce Platform
    E-COMMERCE
    April 2024 - Today (2 years and 4 months)
    Progressive modernization of a textile printing company's business tool: multitenant e-commerce stores with custom domains, automated supplier catalog, orders, payments, invoicing, accounting entries, and dashboards.

    Objective: reduce manual data entry, give teams more autonomy, and build an ERP truly adapted to textile printing. Approximately 90% faster store creation and largely automated accounting chain.
  • TEEPTRAK
    Software Engineer Ruby on Rails
    SOFTWARE PUBLISHING
    April 2024 - October 2025 (1 year and 6 months)
    Contribution to Ruby on Rails applications and their operation: new features, maintenance, Kubernetes deployments, and environment reliability.

    Intervention in an existing product context with technical coordination, monitoring of production releases, and progressive improvement of internal workflows.

Recommendations

Johan Le RochJL
FU
Johan Le Roch and 1 other person have recommended Nathan

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Education

  • Generalist Engineer in Electronics and Computer Science.
    ISEN Brest
    2015

Certifications

Skill set

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