Freelancer profile translated to English.

Description

Hello 👋🏼

I am Alexandre, a freelance Full-Stack developer specializing in Python, FastAPI, SQLAlchemy, as well as building custom web applications with React.JS.

I assist startups and SMEs in creating modern web applications and automated solutions, focused on performance, maintainability, and user experience.

💡What I offer

Front-End : Modern, responsive, and user-friendly React interfaces with shadcn/ui and TailwindCSS
Robust Back-End : High-performance APIs in FastAPI or JavaScript, authentication, permissions, and complex business logic
Business Applications & Automation : Custom tools to automate your processes and workflows
Databases & Integration : PostgreSQL, migrations, flow optimization, and API integration
DevOps & Deployment : Docker, CI/CD, GitHub Actions for reliable and scalable applications
Business-Centric UX/UI : Simple and intuitive design, tailored for your end-users

🛠️Stack & Tools

Languages & Frameworks : JavaScript, TypeScript, React, Python, FastAPI
Databases : PostgreSQL
Design & UI : Figma, shadcn/ui, TailwindCSS
DevOps : Docker, CI/CD, GitHub Actions

🔁My 4-Step Methodology

Kick-Off : Understanding your business needs and technical constraints
Design : Backend architecture, UX/UI design, specifications
Agile Development : Iterative sprints, regular deliverables, continuous feedback
Deployment & Monitoring : Go-live, documentation, post-launch support

🎯Why collaborate with me?

Comprehensive approach : frontend, backend, DevOps, and business thinking
Clean & maintainable code : structured, documented, ready to evolve
Responsive communication : active listening, continuous feedback, and transparency

📩 A web project, an automation tool, or a business application?

Let's discuss it! 🚀

FullStack Python FastAPI SQLAlchemy React.JS

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Serbian
Native or bilingual
German
Conversational

Workplace preferences

Can work on-site

Paris (up to 50km), Marseille (up to 50km), Strasbourg (up to 50km), Lille (up to 50km), Bordeaux (up to 50km)

AJ DEV
Founder
CIVIL ENGINEERING
February 2026 - Today (6 months)
Paris, France
B2B SaaS multi-tenant platform for telecom/construction professionals to automate the production of a construction safety regulatory document, from reading a source PDF to generating the final document in under 30 seconds.

Backend

Language & framework: Python, FastAPI, Uvicorn
Database: PostgreSQL via SQLAlchemy, Alembic migrations
Validation: Pydantic v2+, Pyright static typing (basic mode)
PDF Generation: Jinja2 HTML rendering → A4 PDF via Playwright (Chromium headless)
Authentication: JWT HS256 (with refresh), Bcrypt v5, SHA-256 token rotation
File Storage: Google Cloud Storage (local fallback in dev), pre-signed URLs, 14-day TTL
Invoicing: Stripe (Checkout, customer portal, idempotent webhooks)
Transactional Email: Resend API
Geolocation: geocodage.data.gouv.fr + Overpass API (nearest hospital)
Quality: pytest + pytest-asyncio, Ruff (lint + format)

Frontend

UI Framework: React, Vite
Styles: Tailwind CSS, custom design system (Ink & Green palette, Barlow typography)
Components: Radix UI (12 primitives), Lucide React
Routing: React Router DOM v6, role guards (employee / manager)
HTTP: Axios with interceptors (automatic token refresh, concurrent queue)
3D Animation: Three.js
SEO: Structured JSON-LD (Organization, SoftwareApplication, FAQPage), Open Graph, sitemap
Python FastAPI PostgreSQL React.js Google Cloud
Formly
Mobile Developer
EDUCATION AND E-LEARNING
August 2025 - September 2025 (1 month)
Paris, France
Creation of a pixel-perfect Figma mockup and development of the mobile front-end in React Native, adhering to UI/UX standards for a smooth and modern experience.
FastAPI React Native Figma Front-End Development React.js
Pixee
Co-Founder
EDUCATION AND E-LEARNING
July 2024 - Today (2 years and 1 month)
Paris, France
📱 Mobile Application

Flutter (Dart)
Cross-platform mobile application (iOS & Android) with a fluid, performant interface adapted for a gamified user experience.

🌐 Web Application

Front-end: React.js
Modern and dynamic web interface developed in React.js, with a strong focus on ergonomics and user experience.

UI / Design: shadcn/ui
Elegant, accessible, and consistent components for quickly building clean, readable, and professional interfaces.

⚙️ Back-end

Python – FastAPI
High-performance and scalable API developed with FastAPI, ensuring:
user and role management
business logic
communication between mobile and web applications
clear, documented, and maintainable endpoints

🗄️ Database

PostgreSQL
Robust relational database for storing application data (users, content, progress, etc.).

🚀 Deployment & Tooling

Docker for containerization
CI/CD to automate tests and deployments
Best practices for structuring, security, and maintainability
PostgreSQL FastAPI Docker React.js Flutter

Check out Alexandre's experience

Mehdi Djendar and 2 other people have recommended Alexandre

Agatha Frydrych

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Baptiste Duhen

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Amed Hamou

Senior Lead Developer

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Audrey Champion

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4.3

(3)

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Master II - Expert in Information Technology
EPITECH Paris
2025
- Cursus BAC +5 - Pédagogie par projet - Gestion de projet & projets de groupe - Méthode agile & TDD - Langages: - C - C++ - Python - Docker - Javascript - Node js - TypeScript - React - React Native - Jenkins - Postgres - Git
Master I - Digital Science
TH Köln
2024
Business Information Systems, IT Management, Software Architecture et Data and Information Science

Master's Degree in Information Technology (Bac +5)
EPITECH
2025
Docker Pandas Polars SQLAlchemy FastAPI Google Cloud GCP Cloud docker-compose Python
Data Engineer
POLYNOM
2024
Airflow Data Governance Docker Pandas Polars FastAPI Google Cloud React.js Python

Alexandre's certifications are only visible to Malt Community members

Alexandre Jankovic

⭐ Full-Stack Developer | Python, FastAPI, ReactJS

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