Freelancer profile translated to English.

Description

Senior Backend Developer | Tech Lead | Microservices & AWS Expert

Freelance backend developer specializing in Java / Spring Boot, I help companies design and develop scalable platforms based on cloud microservices architecture.

I provide both operational support and technical leadership to teams (code reviews, standardization, mentoring). My approach combines technical rigor, business understanding, and pragmatism.

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✅ Proficient Stack: Java, Spring Boot, Microservices, AWS (EC2, RDS, SQS, SES), RabbitMQ, OAuth2/JWT

✅ Architecture & Quality: Clean Architecture, DDD, SOLID, CI/CD (GitLab CI), SonarQube

✅ Tech Lead Role: Team support, standardization, code review, documentation

✅ Domains: Eco-designed SaaS, telecommunications, distributed systems, international agile environments

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Lyon (up to 50km)

ORIS Materials Intelligence
Senior Backend Developer
ENVIRONMENTAL
September 2024 - July 2025 (10 months)
Lyon, France
Project Context
Backend development of an eco-design platform for infrastructures, based on multi-criteria material analysis, in an agile, international, and low-carbon oriented environment.

Role & Responsibilities
Design and development of 10+ Java/Spring Boot microservices deployed on AWS
Creation of RESTful APIs in a distributed architecture (OAuth2/JWT, OpenAPI)
Standardization of microservices architecture: conventions, patterns, guidelines
Optimization of code quality and CI/CD pipelines (GitLab CI, SonarQube)
Improvement of developer experience and promotion of best practices
Active participation in code reviews in a multicultural context
Key Achievements & Results
Development of critical backend services for an innovative SaaS platform.
Definition and implementation of microservices architecture standards
Continuous improvement of CI/CD workflows and software quality
Java Amazon Web Services PostgreSQL Spring boot AWS CDK
IT Solutions Factory
Technical Lead
TELECOMMUNICATIONS
January 2020 - September 2024 (4 years and 8 months)
Lyon, France
Project Context
Technical supervision and development of a multi-brand CRM solution for the telecommunications sector, with international scope.

Role & Responsibilities
Technical team leadership: coaching, training, code reviews
Development of RESTful APIs in a microservices architecture
Technical documentation (OpenAPI, AsyncAPI)
Reduction of technical debt through SOLID, DDD, and hexagonal architecture
Progressive migration to an event-driven architecture (RabbitMQ)
Authentication redesign via an API Gateway (KrakenD)
Automated testing with JUnit, Mockito, TestContainers (quality monitored via SonarQube)
CI/CD with GitLab CI and FluxCD, Kubernetes cluster monitoring (Kibana, Grafana)
Key Achievements & Results
Implementation of an automated payment system (multi-brand and multi-method)
Setup of a recovery system based on Spring Quartz
Notable improvement in code quality and architecture
Optimization of deployment and production monitoring workflows
Spring boot Java REST APIs RabbitMQ Hexagonal Architecture
IT Solutions Factory
Software Engineer
TELECOMMUNICATIONS
December 2018 - January 2020 (1 year and 1 month)
Lyon, France
Project Context
Development from scratch of a CRM solution for a telecommunications player, based on a microservices architecture.

Role & Responsibilities
Development of RESTful APIs in a microservices ecosystem
Participation in initial production deployment and application support
Close collaboration with business teams to frame and challenge requirements
Key Achievements & Results
Key contribution to the launch of an international CRM solution
Successful production deployment and operational maintenance
Java REST APIs Spring boot JPA/Hibernate MySQL