Alexandre Petitjean
Expert Django & DevOps since 2019
About
Independent backend developer with 5+ years of experience
Specialized in Django & DevOps for 5+ years. I help companies build and evolve their critical applications.
Legacy applications (10+ years), from-scratch development, complex migrations. I've worked on projects that migrated 70% of the business and deployed across 20+ industrial sites.
"Delivering robust, maintainable code, integrated into your processes." Autonomously or with your teams. One goal: creating lasting value.
Quality code
Clean, tested, documented
Fast delivery
Iterative and agile
Flexibility
Solo or in a team
Product vision
Understanding your challenges
Critical applications
Managing 10+ year legacy applications
Expertise in maintaining and evolving critical business applications, with particular attention to stability and backward compatibility.
Measurable business impact
70% of business migrated
Fullstack development of solutions with direct business impact, featuring concrete success and adoption metrics.
Large-scale deployments
20+ industrial sites
Design and deployment of scalable architectures, with complete automation of multi-site deployment processes.
What I offer
Technical solutions tailored to your business challenges with Django and DevOps expertise
Django & DevOps Development
Robust web applications, high-performance REST APIs, and complex integrations. Infrastructure automation, CI/CD pipelines, and cloud optimization. Complete expertise for your backend projects.
Technical consulting
Strategic advice to align technology with business objectives
CTO as a Service
Technical and strategic support to structure your teams
Automation
Business process and workflow automation with n8n
My approach
I can work alone or in collaboration with your existing teams. My goal is always the same: deliver robust, understandable code, well integrated into your business and technical processes.
Short or long missions
24h response time to discuss your project
Tech Stack
Backend & API
Django Django REST Framework 
Python 
PostgreSQL 
MySQL 
Redis 
RabbitMQ Cloud & Monitoring
AWS 
cPanel 
Prometheus 
Grafana Automation
n8n DevOps & Infrastructure
Docker 
Kubernetes 
GitLab CI/CD 
GitHub Actions Mobile & Frontend
Flutter 
React 
Next.js Projects
Featured Projects
Telecom Operator CRM
Maintenance and evolution of a legacy CRM with high business stakes. Feature development, critical bug fixes.
✓ Major technical debt reduction, development process improvements
AI Chat for Telecom Operator
Creation of an AI chat (ChatGPT-style) for customer service agents of a telecom operator.
✓ 30% reduction in agent response time
Multi-site Logistics
Redesign of a legacy inventory management tool and API development for Flutter mobile applications.
✓ 20+ industrial sites
Other Projects
Wealth Management CRM
Full-stack development from design to production with monitoring and scaling.
✓ 70% of business migrated
Production Management Interface
Creation of a web interface for tracking production at a bottling plant.
✓ Real-time monitoring of production lines, unified operator interface
Blog
Discover my articles about Django, DevOps, Python and web development best practices
First articles in preparation
I'm currently preparing my first articles to share my experience feedback and best practices. Stay tuned!
View blogLet's start your project
Ready to turn your ideas into robust technical solutions? Let's discuss your project.
Book a 30-min slot
Let's discuss your needs directly and see how I can help you.
Location
Lyon · Remote
Indicative daily rate
~500€
Availability
Immediate