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Mohamed KonateMK

Mohamed Konate

Supermalter

Web Developer | React.js | Next.js | Node.js

€500/day
8 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mohamed

React.js | Next.js | Node.js Web Developer (8 years of experience) 💥


Does your product need to go further: new features,AIintegration, scaling?

I step in to transform your ideas into concrete, reliable, and scalable solutions.
➡ Creation of modern interfaces withReact.js&Next.js
➡ Robust backend development inNode.js
➡ Integration ofgenerative AI(OpenAI,LangChain) to enhance your features

For several years, I have been supporting startups and established companies on ambitious web projects:

Development of high-performance and scalable Web and SaaS Applications

E-commerce platformsand business back-offices

CustomAIAssistants (chatbots, automation, data exploitation)

In every mission, I quickly integrate into the team, maintain a consistent delivery pace, and guaranteemaintainableand documented **code**. My goal: to help you save time, improve user experience, and generate new **business opportunities**.

Technical Stack: React.js, Next.js, Node.js, TypeScript, OpenAI, LangChain, Supabase, n8n, Stripe, Prisma, PostgreSQL, Clean Architecture

📩 Need to launch a web project or strengthen your front-end/back-end team with a web developer?

Let's talk: I'm available for an initial video call to clarify your challenges and define a concrete approach. Quick response guaranteed.
  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Paris (up to 50km), Lille (up to 50km), Lyon (up to 50km), Marseille (up to 50km), Nantes (up to 50km)

Experience

  • BIZLINE SAS
    Web Developer | React.js | Next.js | Node.js
    ENERGY AND UTILITIES
    March 2026 - Today (5 months)
    Paris, France
    Objective:Develop an interactive visual configurator for Bizline, a Rexel group brand, to enable sales representatives and end customers to independently assemble workshop shelving, generate a purchase summary, and produce a purchase order.

    Achievements:
    - Development of a full-stackNext.js/React.jsapplication with App Router, interactive components, and decoupled business logic
    - Creation of a visual configurator in **React.js**: drag-and-drop, calibrated perspective, dynamic multi-shelf structures
    - Design of a placement engine inTypeScriptwith complex business rules: compatibilities, top/bottom constraints, product type limits
    - Implementation of an extensible architecture based on a declarative product registry, facilitating the addition of new items
    - Implementation of advanced features: auto-linking of dependent products, cascade deletion, undo/redo
    - Generation of a purchase summary and client-side PDF export
    - Unit tests withVitestand **Testing Library**: 250+ tests on business logic
    - Industrialized deployment withDocker**, **nginx**, and **GitLab CI
    **
    Impact:** Sales team autonomy in generating quotes, more easily scalable catalog, and maintainable business engine.

    Technical Stack:Next.js, React.js, TypeScript, TailwindCSS, Vitest, Testing Library, React-PDF, Docker, nginx, GitLab CI
    React.js Next.js TypeScript React / Next.js Next.js Development
  • L’As de la route
    Malt logoOn Malt
    Web Developer | React.js | Next.js
    EDUCATION AND E-LEARNING
    April 2026 - April 2026
    Objective: Work on a live SaaS e-learning platform (online driving school) to resolve critical bugs, optimize performance, and improve user experience.

    Achievements:
    • Resolution of critical production bugs throughSQL PostgreSQLmigrations (Supabase): restoration of deletedSQLfunctions that blocked the upload of educational content and caused users to lose their paidStripesubscriptions
    • Optimization of training course loading performance by refactoringPostgreSQLqueries to eliminate redundant calls to the Supabase database
    • Improvement of mobile experience withReact.jsandTailwindCSS**: fixing an iOS full-screen bug on H5P interactive exercises through a responsive **CSSapproach
    • Implementation of instant visual feedback (loading states) on allReact.jsnavigation buttons of the platform, inTypeScriptwith the latestNext.jsAPIs
    • Setup of anSQLscript (**PostgreSQL** /Supabase**) to manually activate a **Stripesubscription for a user, with automatic verification that the subscription works correctly from end to end
    • Work on a complex Turborepo monorepo codebase (1700+ commits, 16 packages, **Next.js**, **React.js**, **TypeScript**, **Supabase**, **Stripe**)
    Technical Stack:Next.js, React.js, TypeScript, TailwindCSS, shadcn/ui, Supabase (PostgreSQL, RLS, Auth), Drizzle ORM, Stripe, H5P, Turborepo
    React.js Next.js TypeScript Web Development JavaScript
  • GROUPE RESOCOM
    Malt logoOn Malt
    Web Developer | React.js | Next.js | Node.js
    DIGITAL AND IT
    November 2025 - April 2026 (5 months)
    Paris, France
    Objective: Develop a complete B2B SaaS platform for contract management, electronic signatures, and recurring payments.

    Achievements:
    - Full-stackNext.js**, **React.jsapplication with App Router architecture, 30+REST APIroutes, and role system
    - CompleteStripeintegration: one-time payments, subscriptions, webhooks, and payment method management
    - Electronic signature workflowYousign(creation, sending, tracking, callbacks)
    - Dynamic PDF generation (contracts, amendments) withReact-PDF
    - SecureNextAuth.jsauthentication (**JWT**, credentials, middleware roles-based)
    -PostgreSQLdatabase modeling with Prisma ORM and migrations
    - Analytics dashboards with Chart.js, Recharts
    - Service marketplace with configurable pricing
    - Audit log system for GDPR/DORA compliance
    -GitLab CI/CDpipeline +Dockercontainerization
    - Jest unit tests and shadcn/ui + TailwindCSS components

    Technical Stack:Next.js, React.js, TypeScript, TailwindCSS, shadcn/ui, Prisma, PostgreSQL, Stripe, Yousign, NextAuth.js, Resend, Chart.js, Recharts, Jest, Docker, GitLab CI
    React.js Next.js Node.js TypeScript React.js & Next.js

Reviews

5.0

Out of 2 ratings

SambaS

Samba

Excellent développeur ! - L’As de la route

Reviewed on 4/15/2026

Mohamed perfectly fulfilled his mission and more. He audited and fixed bugs on my e-learning platform and made some improvements. He is very attentive, knows how to adapt to unforeseen circumstances, but above all, he has a very good vision of the product and the client, which allows him to give very relevant advice. I would be delighted to collaborate with him again! Thank you again, Samba - L’AS de la route
A

Alexis

UGAP x AMOE-TMA x SGDSN

Reviewed on 8/28/2025

Mohamed fully met our expectations within the expected timeframe. His skills were well-suited to our technical stack. I would be delighted to work with him again.

Recommendations

Tony DucheminTD
Lucien ArbieuLA
Fahari H.FH
+2
Tony Duchemin and 4 other people have recommended Mohamed

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Education

  • Multimedia Project Manager - Development
    IESA Multimedia
    2018

Skill set

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