Freelance
12/2025 → nowOptimia
SaaS platform built from scratch as CTO, covering architecture, infrastructure, CI/CD, and team mentoring from day one
SupabaseScalewayGitLabScrum+1
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What Sets Me Apart
With experience across France, Brazil and Germany, I bring a global perspective to every engagement. Before writing code, I invest in shared understanding, using Event Storming and collaborative whiteboard tools to align everyone from developers to product owners, designers and stakeholders around the problem we are solving.
This collaborative foundation leads to systems that are maintainable long after handoff: clean architecture, thorough testing, and infrastructure that teams can operate with confidence.
Based in EuropeAvailable for Remote Work · CET/CEST Timezone
Technical Expertise
Full-Stack Development
Proficient across the entire technology stack, from responsive frontends to scalable backend systems and database design.
Multi-tenant web apps with auth, payments, and role-based access
API design with OpenAPI specs, versioning, and rate limiting
Real-time collaboration features with WebSockets and optimistic updates
React & TypeScriptPython & FastAPIPostgreSQLNode.jsSupabaseREST & GraphQL APIs
Cloud Architecture & DevOps
AWS-certified professional with expertise in cloud-native infrastructure, containerization, and automated deployment pipelines.
Production-grade Kubernetes clusters with autoscaling and zero-downtime deployments
GitLab/GitHub CI/CD pipelines from commit to production with automated testing gates
Observability stacks with Prometheus, Grafana, and structured logging
AWS ServicesKubernetesDockerTerraform/CDKGitLabGitHub ActionsScalewayPrometheus & Grafana
AI & Machine Learning Integration
Specialized in integrating cutting-edge AI technologies into business applications, with focus on agentic workflows and intelligent automation.
Multi-agent workflows with CrewAI for document processing and contract analysis
RAG pipelines connecting LLMs to proprietary business data
MCP servers bridging AI assistants with internal tools and APIs
CrewAIAnthropic APIOpenAI IntegrationLangChainMCP Servers
Data Engineering & Analytics
Strong background in data pipeline architecture, real-time processing, and building analytics platforms for business intelligence.
Kafka-based event streaming for real-time data synchronization
ETL pipelines transforming raw data into analytics-ready datasets
Interactive dashboards with Streamlit for business intelligence
Apache KafkaETL PipelinesStreamlitPostgreSQLAWS DynamoDB
How I Work
A structured approach to delivering high-quality software solutions
01
Discovery & Planning
Deep dive into your requirements using Event Storming to map business processes, technical constraints, and objectives.
02
Architecture & Design
Model systems with C4 diagrams and maintain living architecture documentation with ARC42 so the codebase stays understandable long after handoff.
03
Iterative Development
GitLab as the single DevOps platform for milestone tracking, CI/CD pipelines, and code review. User-facing documentation organized with the Diataxis framework.
Trusted byKigs
KigsProjects
A selection of recent work across SaaS development, cloud infrastructure, and AI automation.
Technical Blog
Deep dives into software engineering, architecture patterns, and modern development practices. All articles are published on my Substack newsletter.
What Clients Say
Real feedback from project collaborations.
We were looking for an expert capable of developing a SaaS MVP on a high-performance stack. Frédéric delivered exactly what was needed, mastering the Scaleway / Supabase ecosystem end-to-end. The GitLab deployment pipeline configuration is exemplary and meets the highest current DevOps standards. A worthwhile investment for anyone wanting a serious platform from day one.
Let's Build Something Great Together
Ready to discuss your project? I'd love to hear about your challenges and explore how we can work together to achieve your goals.