Freelancer profile translated to English.
Back to original languageAbout Mustapha
🔍 Looking for a Java developer to strengthen your backend projects?
Need a Spring Boot, Kafka, microservices, and CI/CD specialist to modernize your architecture or improve the reliability of your systems? You've come to the right place.
💻 Who am I?
I am Mustapha Smail, a Java backend developer passionate about distributed architectures, automation, and scalability. I work on critical applications where quality, performance, and robustness are essential. My experience in banking and state environments has allowed me to acquire strong rigor and mastery of systems with high business stakes.
✅ Expertise:
- Backend Development: Java (17/21), Spring Boot, Kafka, REST APIs
- Architecture: Hexagonal, Clean Code, SOLID, TDD, CI/CD, Event-Driven
- DevOps & Cloud-Native: Docker, Kubernetes, GitLab CI/CD, GitHub Actions
- Databases: Oracle, MySQL, Db2, MongoDB
🏆 Notable Experiences:
Crédit Agricole Technologies & Services (CA-TS):
Complete redesign of a strategic internal tool, transitioning from a PHP monolith to a Java + Kafka + Kubernetes microservices architecture.
Implementation of a continuous testing process with Cypress (70%+ coverage).
Strong integration with DevOps and AppOps (GitLab CI/CD, Kubernetes).
ANTS:
Participation in SIV coordination, writing functional specifications, and defining tax rules.
🔍 Why work with me?
Reliable, autonomous, and solution-oriented, I integrate quickly into teams. I make it a point of honor to produce clean, maintainable, and tested code, while bringing a solid business understanding. I am passionate about continuous improvement, architecture, and best practices.
📩 Want to discuss a project? Let's talk!
💥 Keywords:
Java | Spring Boot | Kafka | Microservices | TDD | Clean Code | CI/CD | Docker | Kubernetes | REST | Hexagonal Architecture | GitLab
French
Native or bilingual
English
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- Credit Agricole Technologies et ServicesAdvanced DeveloperSeptember 2024 - Today (1 year and 9 months)Paris, France• Led the complete redesign of a strategic internal marketing tool (prospect qualification) from a monolithic PHP system to a Java, Kafka, and Kubernetes (ArgoCD) based microservices architecture, enhancing scalability and maintainability.• Responsible for the end-to-end management (execution, maintenance, bug fixing) of one of the three flagship products managed by the team, ensuring its stability and business continuity through proactive monitoring and anomaly resolution.• Implemented a robust continuous testing process, coupled with detailed automated test reports using Cypress, achieving a minimum test coverage of 70% and significantly reducing manual testing efforts for business analysts.• Actively contributed to weekly debugging and production incident resolution efforts, particularly for critical batch processing workflows interfacing with external systems.• Worked within a multidisciplinary agile team of over 5 developers, collaborating closely with DevOps and AppOps teams to ensure seamless integration, deployment, and observability using GitLab CI/CD and native Kubernetes tools.• Participated in technical documentation, peer code reviews, and onboarding of new developers, reinforcing development standards and team knowledge.
- Credit Agricole Technologies et ServicesDeveloper EngineerSeptember 2022 - August 2024 (1 year and 11 months)Paris, France• Optimized batch processing by rewriting Windev tasks to Java (Spring), increasing efficiency by 30% and preventing task obsolescence.• Independently managed the production deployment of two batch processing systems, with a production target set for the beginning of Q2 2024, ensuring a smooth transition and paving the way for improved system efficiency and reliability.• Migrated over 50 technical documents to Gitlab and deployed a CI/CD pipeline to streamline the application build and deployment process.
- Agence nationale des titres sécurisésIT Project Management AssistantPUBLIC SECTORSeptember 2021 - August 2022 (11 months)Paris, France• Monitored project coordination with suppliers, hosts, and operators of the SIV (Vehicle Registration System) applications.• Contributed to the creation of a comprehensive set of functional specifications for registration taxes and fees.• Orchestrated the definition of tax rules within technical tools.
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Education
- Master in Applied Computer Science for Business Management (MIAGE)Université Paris Nanterre2024
- Bachelor's degree in Applied Computer Science for Business Management (MIAGE)Université Paris Nanterre2022Licence en informatique appliquée à la gestion d'entreprise (MIAGE)
Certifications
- CN100: Docker Containerization EssentialsMirantis2024