Freelancer profile translated to English.
Back to original languageAbout Cedric
Senior freelance consultant with over 12 years of experience, I am involved in both the design of software architectures and their technical implementation.
Specializing in Golang and PHP (Symfony, Laravel), I design and develop robust, scalable, and performant systems in cloud environments (AWS, GCP).
I support companies in technical scoping, defining architectures (API-first, microservices, cloud-native), and in their concrete implementation, while remaining fully operational on the code when necessary.
My positioning is that of a hands-on architect, capable of combining strategic vision, technical excellence, and delivery efficiency.
French
Native or bilingual
English
Fluent
German
Basic
Can work on-site
Paris (up to 50km)
Experience
- Société GénéraleIAM Expert / Senior Go DeveloperBANKING AND INSURANCEFebruary 2026 - Today (6 months)Paris, France
- Design, development, and evolutionary maintenance of critical IAM solutions for access governance and recertification.
- Contribute to the functional scoping of certain IAM components.
- Development of robust backend services in Go and PHP in a security-conscious and business-critical context.
- Implementation and optimization of secure REST APIs for authorization repositories and identity systems.
- Participation in technical architecture and continuous improvement of IAM platforms in an IT security-oriented environment.
- Integration and interconnection with LDAP directories, user repositories, and authentication systems.
- Analysis of functional requirements in close collaboration with business, security, and operations teams.
- Development of alerting and security event detection tools for monitoring sensitive access and anomalies.
- Contribution to software engineering best practices: code quality, performance, maintainability, and application security.
- Technical support for teams and proactive proposals on architecture, security, and integration topics.
- BelieveSenior PHP Symfony DeveloperENTERTAINMENT AND LEISUREMay 2025 - January 2026 (8 months)Paris, France🔹 Architecture & Scalability
- Contribution to the evolution of a distributed microservices architecture (K8s), exposed via API Gateway (KrakenD / Kong), ensuring high availability and horizontal scalability.
- Design and optimization of massive event streams (Kafka, RabbitMQ, Temporal) to handle significant load peaks.
- Implementation of distributed caching and storage strategies (Redis, MongoDB, PostgreSQL) adapted for intensive media usage.
- Progressive modernization of legacy components towards cloud-native services.
🔹 Performance & Optimization- Significant reduction in latencies and timeouts through parallelization, inter-service call optimization, and advanced REST/GraphQL API tuning.
- Optimization of edge layers (NGINX, CDN, API Gateway) to improve overall performance.
- Advanced SQL tuning (indexing, complex queries, NoSQL optimization).
- Refactoring and modernization of legacy components.
🔹 Resilience & Observability- Implementation of fault tolerance strategies (circuit breakers, retries, timeouts, idempotency).
- Setup of comprehensive observability (Datadog, ELK, APM, SLO/SLA metrics).
- Continuous improvement of reliability and reduction of MTTR through advanced monitoring and intelligent alerting.
🔹 DevOps & Cloud- Deployment and operation of cloud architectures (AWS, GCP) and serverless, with industrialized CI/CD and Infrastructure as Code (Helm, ArgoCD).
- Secure management of secrets and access (Vault, OAuth2, JWT).
- Contribution to DevOps standardization and production environment stability.
🔹 Collaboration & Technical Governance- Active participation in Agile rituals (Scrum).
- Writing ADRs (Architecture Decision Records) and architecture documentation.
- Contribution to code reviews and dissemination of best practices (Clean Code, SOLID).
- MyMSenior Solution Architect & Backend developer (Golang / PHP)SOCIAL NETWORKSDecember 2021 - November 2024 (2 years and 11 months)Paris, France🔹 Architecture & Transformation
- Design and implementation of a microservices architecture based on Clean Architecture, DDD, and Hexagonal, ensuring long-term maintainability and scalability.
- Definition of migration trajectories and construction of application transformation roadmaps.
- Progressive migration from PHP monolith to Golang microservices (Strangler pattern), while ensuring service continuity.
- Application rationalization and reduction of technical debt.
- Simplification of the IT system with reduced maintenance costs (-20%).
🔹 Performance & Scalability- Optimization of backend performance (PHP & Go), ~40% reduction in response times through redesign of caching mechanisms and optimization of data access.
- Implementation of advanced scaling strategies (Kubernetes autoscaling, cloud load balancing).
- Implementation of real-time communication and distributed systems (gRPC, WebSockets, Mercure).
- Optimization of relational and NoSQL databases.
🔹 Security & Governance- Implementation of secure architectures (OAuth2, JWT, OpenID Connect, IAM, Cognito, SAML).
- API security (rate limiting, WAF, CORS).
- Implementation of zero-trust principles and formalization of technical standards.
🔹 DevOps & Cloud- Cloud-native deployment on AWS (EKS, EC2, Lambda, S3).
- Infrastructure as Code (Terraform) for reproducible environments.
- Automated CI/CD and quality gates (SonarQube).
- Advanced observability (Prometheus, Grafana, OpenTelemetry, ELK, Sentry).
🔹 Migration & Modernization- Progressive migration from PHP monolith to Golang microservices, while ensuring the stability of the existing system.
- Code refactoring and reduction of technical debt through audits and quality gates.
- Development of the booking workflow.
🔹 Management & Continuous Improvement- Construction of management indicators and KPI monitoring.
- Analysis of API metrics & events.
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Education
- Master in Computer Science, Information and Systems Engineering, GEII specialization, Computer EngineeringUniversité de Rouen Normandie2014Master informatique, génie de l'information et des sytème,spécialité GEII, ingénieurie informatique
- Software Engineering, Computer EngineeringTime Université2011Ingénieurie en génie logiciel, Ingénierie informatique