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Oren CohenOC

Oren Cohen

Fullstack Developer | Next.js NestJS TypeScript

€550/day
Marseille, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Oren

Is your SaaS project stuck with technical debt? Does your team need senior reinforcement to deliver quickly and well?

I act as a Fullstack architect and developer to design, refactor, and industrialize your web products — from MVP to production.

10+ years of experience, I have notably worked for:
• Airbus Helicopters — global MRO platform (critical aeronautics)
• Bolloré Logistics — redesign of a maritime pricing SI (250+ Excel files migrated to a unified web platform)
• Limova.ai — AI agents and B2B automation
• 70+ SMEs, startups, and major accounts supported

Types of missions I undertake:
• Business and legacy SI redesign (Excel/Access → modern, scalable web)
• Architecture, tech lead, and delivery of SaaS or internal tools
• Development of AI agents, LLM workflows, and business automations
• Complex API integrations (Stripe, Pipedream, CRM, ERP)
• Production stabilization, E2E tests (Playwright), CI/CD, and code quality

Main stack: Next.js, NestJS, Node.js, TypeScript, React, Prisma, PostgreSQL, Docker, Playwright.

My approach: deliver a professional, tested, documented, and scalable product. No hidden technical debt, no endless bug fixes.

Launching a SaaS project or looking to strengthen your tech team? Contact me (response within 1 hour) to discuss.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Marseille (up to 50km), Paris 17 (up to 50km)

Experience

  • ADI Dentaire
    PrestaShop E-commerce Redesign — 3,100+ products
    E-COMMERCE
    January 2026 - June 2026 (5 months)
    Paris, France
    E-commerce redesign for a dental equipment wholesaler using PrestaShop, replacing an old catalog.

    Key achievements:
    • Catalog migration and structuring: 3,156 active products with images and descriptions (>99% completeness), 168 official brands, 8 dental universes, and ~116 subcategories
    • Development of mega-menus, reference/brand search, promotion pages, and brand pages
    • Enriched product pages, promo badges, stock management, and availability indicators
    • PrestaShop theme customization, UI/UX redesign towards a modern direction
    • DNS migration preparation and client support until go-live

    Stack: PrestaShop, PHP, Smarty, MySQL, JavaScript, CSS, OVH.
    Prestashop PHP MySQL JavaScript
  • Limova.ai
    Software Architect, AI Agents & Automation
    SOFTWARE PUBLISHING
    November 2025 - March 2026 (4 months)
    Paris 20 Ménilmontant, France
    Engaged with an AI startup to rapidly design and deliver useful products, from idea to production.
    • Development of AI agents focused on business automation, operational assistants, and LLM workflows
    • Design of React.js / Next.js interfaces, Node.js / Nest.js APIs, orchestration, webhooks, and third-party integrations
    • Playwright E2E tests, CI/CD, and rapid deployments for startup products
    Next.js Node.js Playwright NestJs Typescript
  • Color Nettoyage
    Fullstack Developer — Showcase Website + Node.js Back-end
    CIVIL ENGINEERING
    March 2025 - July 2025 (4 months)
    Marseille, France
    Multi-page showcase website for a professional cleaning SME, with a contact form back-end, database, and server-side email sending.

    Key achievements:
    • Multi-page static front-end (HTML / CSS / JS) with reusable components, deployed on Vercel
    • Node.js / Express back-end exposed on Railway, contact form connected to a PostgreSQL database
    • Transactional emails sent via SMTP, server validation, and anti-spam measures
    • DNS configuration, Vercel -> Railway rewrite for the API, and deployment on a custom domain
    • On-page SEO optimization and Lighthouse performance

    Stack: Node.js, Express, PostgreSQL, HTML/CSS/JS, Vercel, Railway, SMTP.
    Node.js PostgreSQL JavaScript Express.js

Recommendations

FU
Franck AdoukoFA
Former user and 1 other person have recommended Oren

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Education

  • Expert in Computer Engineering, Software Architect, Fullstack Application Developer
    Epitech Marseille
    2022
  • Information Systems Project Manager
    Groupe 4
    2020
    Diplôme qui forme aussi bien en développement informatique ( sites internet, application mobiles, jeux videos) que au management et chef de projet.

Certifications

  • Expert in Computer Engineering, Software Architect, Fullstack Application Developer
    Epitech, IONIS Group
    2022
    Java/JEE Node.js Express.js React Angular CSS3 DevOps Customer Relationship Management (CRM) Docker HTML5 Kubernetes Gitlab CI/CD Web Development

Skill set

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