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Adrien DemassieuxAD

Adrien Demassieux

Supermalter

Fullstack Developer - Software, Web, API

€675/day
28 projects
Bordeaux, FR
15+ years
Full-stack Development
Python
Backend Service Development
Front End Interface Development
Algorithms and Data Structures

Average response time: 1 hour

Freelancer profile translated to English.
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About Adrien

Engineer-developer with 20 years of experience in various sectors, I design business software, web applications, and robust solutions, tailored to your needs.

Know-how:
  • Back-end & Frameworks : Python, Django, Flask, FastAPI; microservices, WebSockets (real-time)
  • Databases : SQLite, PostgreSQL; Redis, Elasticsearch; BaaS (Supabase/Firebase)
  • Front-end & Design : JavaScript/TypeScript, HTML/CSS, React/Vue/Next.js, Tailwind; UI/UX (Figma)
  • API & Integration : REST, GraphQL, OpenAPI/Swagger, OAuth2, webhooks
  • Software & Desktop : Business Applications (PyQt)
  • Mobile : Android (Java/Kotlin), Flutter/React Native
  • AI & Data : TensorFlow, PyTorch, scikit-learn; RAG, AI scraping, agents/LLMOps, semantic search (vectors), fine-tuning/quantization, doc extraction, multimodal, synthetic data/anonymization (GDPR), security/guardrails, MPC (PSI)
  • Data Eng & BI : ETL/ELT (Airflow, dbt), warehouses (BigQuery/Snowflake), dashboards (Metabase/Looker Studio)
  • Automation : Airtable, Excel, Google Sheets; n8n/Make/Zapier
  • Server & Infra : Linux, Docker, Nginx, Apache; Kubernetes, serverless (Cloud Run/Lambda), IaC (Terraform), CI/CD (GitHub Actions), observability (OpenTelemetry)
Whether it's creating software, integrating a chatbot, developing a secure online service, or optimizing an industrial process, I bring my expertise to design custom, reliable, scalable, and efficient solutions.
Digital Business Models
Software Publishing
Plant and Machinery
E-commerce
Gaming and Animation

  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • AD22 FI SAS
    Custom Professional Software and Web Application Development
    SOFTWARE PUBLISHING
    January 2024 - Today (2 years and 5 months)
    Bordeaux, France

    Python & Automation Development

    - Software creation with PyQt and SQLite
    - Industrial label generation with QR Code and quality tracking
    - Jupyter notebook development for data analysis and predictive modeling
    - Algorithmic trading model creation
    - Statistical model optimization with Statsmodels

    Example: You have Excel macros and want to develop more professional software.

    AI Integration and AI Agent Creation

    - Development and integration of conversational agents and AI chatbots
    - Automation of tasks and process optimization with generative AI
    - Use of AI frameworks like TensorFlow, PyTorch, OpenAI API
    - Development of intelligent analysis and assisted decision-making tools

    Example: You want to integrate an AI chatbot into your website or local application.

    Web & E-Commerce Development

    - Creation of E-Commerce websites inHTML / CSS / JavaScript / PHP
    - Web application development withDjangoandFlask
    - Database integration withSQLAlchemy
    - Authentication and security management withWerkzeug.security
    - REST API development

    Example: You want to set up an E-Commerce website with PayPal integration and search engine optimization.

    Mobile & Video Game Development

    - Android application development, including amusic compositionapplication
    - Video game design withPygameandBeeWare

    Example: You have an Android app idea and want help creating it.

    Data Science & Data Analysis

    - Statistical analysis oftime series
    - Creation of predictive models for finance and gaming

    Example: You have developed a trading system that works and want to automate it.
    Python SQLAlchemy REST API Jupyter pygame Beeware HTML5 CSS3 PHP JavaScript SQLite PyQt Qt6 Django Python Flask GitHub TensorFlow Pytorch Open AI Deepseek
  • NCC SAS
    Mechanical Calculations and Scientific Programming
    MECHANICAL ENGINEERING
    January 2013 - December 2023 (11 years)
    Paris, France
    - Development of business software in .NET, C++, C#, Excel-VBA for mechanical and thermal calculations.
    - Design of a document management platform in .NET, C++, C#.
    - Development of an ERP/CRM with Airtable for operational and administrative management of the company.
    ASP.NET Core C# C++ VBA Excel VBA Macro ERP CRM Airtable
  • KAEFER (Gestion de Contrat AREVA NP)
    Technical Director. Responsible for business software programming.
    ENERGY AND UTILITIES
    September 2006 - December 2012 (6 years and 4 months)
    Puteaux, France
    - Development of business software for the design and calculation of industrial scaffolding (seismic design) in Excel/VBA, then migration to C#/.NET.
    - Development of business software for thermal calculation in Excel/VBA, then migration to C#/.NET.
    Excel VBA Macro C# ASP.NET Core
Check out Adrien's experience

Reviews

5.0

Out of 12 ratings

P

Pierre

Recommendation - Eye Master

Reviewed on 4/3/2026

Adrien is a trustworthy person who adapts very quickly to any type of environment. He doesn't just execute: he suggests ideas, offers advice, and helps anticipate future developments. I recommend him 100%.
A

Alina

Directeur général - Datatorq

Reviewed on 12/3/2025

We were incredibly lucky to work with Adrien on the development of our internal application. He remained professional from start to finish, always available, attentive, and demonstrated exemplary cooperation. I was particularly impressed by his ability to quickly understand our business challenges and translate them into concrete solutions. Communication was always fluid and effective, making the entire project very pleasant to manage. I highly recommend him to any team looking for someone reliable, friendly, and highly competent. Thank you very much, Adrien!
Show all 12 reviews

Recommendations

CD
TP
Corentin Douay and 1 other person have recommended Adrien

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Education

  • Mechanical Engineering Engineer
    INSA
    2006
  • Engineer's degree (Msc) in structural mechanics
    INSA
    2006
    Master II Recherche CEA

Skill set

Python/Django
Python Flask
FastAPI
Plotly
Web Scraping
Python Programming
External API integration
Linux
Airtable
Software Architecture
Testing and Quality Assurance
PHP
JavaScript
HTML/CSS
PHP/MySQL
Pytorch
TensorFlow
PyQt
SQLite
Django
REST API
Database Management (e.g., SQL, NoSQL)
Apache
Nginx
PostgreSQL
GraphQL
Docker
Microsoft Excel
Kotlin
SQLAlchemy
REST
API
Jupyter
pygame
Beeware
HTML5
CSS3
Qt6
GitHub
Open AI
Deepseek
ASP.NET Core
C#
C++
VBA
Excel VBA Macro
ERP
CRM
CAST3M
ANSYS

Categories