Freelancer profile translated to English.
Back to original languageAbout Philémon
Looking for a Java / Java EE developer?
Launching the development of a new product?
Want to increase the pace of production releases in a DevOps environment?
You are in the right place
I am a software engineer with 10 years of experience in Java. I am also certified as a DevOps Expert, DevOps Foundation, Scrum Master, and Product Owner.
I have worked with companies such as:
- JCDecaux
- Openclassrooms
- Société Générale
- Ekwateur
- Crédit Agricole
I am capable of intervening from project design to production.
I have worked in various sectors ranging from industry to banking and energy.
I am able to:
- Design, develop, and maintain functionalities in line with business needs
- Participate in the writing of detailed technical specifications
- Analyze the impact of product design on the IT technical architecture
- Develop the back-end in Java, Spring boot, Quarkus
- Set up relational and NoSQL databases (PostgreSQL, MySQL, MongoDB)
- Realize complex architectures (microservices and event-driven)
- Set up CI/CD with Gitlab or Jenkins
- Set up containerization and orchestration of your applications with Docker and Kubernetes
- Implement observability and monitoring of your projects with tools such as ELK, Datadog, Grafana, and Prometheus
- Deploy in a cloud environment with AWS with cost optimization
- Implement software architecture (Clean architecture, hexagonal architecture, or N-tier)
- Write technical documentation
- Perform unit and integration tests to ensure code quality
- Lead implementation through testing, based on Test-Driven Development (TDD) practices
- Participate in refactoring, continuous improvement, and code review contributions
French
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- Crédit Agricole-GIPJava DeveloperBANKING AND INSURANCEMay 2024 - Today (2 years and 1 month)Guyancourt, FranceCrédit Agricole Payment Services, a subsidiary of the Crédit Agricole group, is the leader in payment services in France with nearly 30% market share, designing payment solutions for the group's entities.I joined the DVI (Documents Via Internet) team as part of the TSF project. This project aims to modernize the administrative document management system between the group's regional banks and customers by automating and optimizing processes.We were organized into a feature team of 10 people:- 1 Scrum Master- 1 Tech Lead- 5 Developers- 1 Product Owner- 2 Business Analysts🎯 As a Java and Angular developer, my responsibilities included:✔️ Design of OpenAPI specs.✔️ Abandonment & event handling✔️ Addition of administrator authorizations for the audit UI✔️ Management of obsolescence (update of dependencies and CVEs)✔️ Setup of ELK Dashboard✔️ Design of UML class diagrams (Class, Use Case, and Sequence diagrams)✔️ Consumption, storage, and production of MQ messages✔️ Ensuring code quality (Code review + unit test development).✔️ Deployment with Ansible playbooks in environments (Dev & Qualif)✔️ Control of the ADR Excel file structure✔️ Sending nfName & parm fields to recipients✔️ Improvement of SonarQube coverage (unit & integration tests)✔️ Preparation of performance tests, security tests, and code audits✔️ Promotion of artifacts via AWX & Jenkins✔️ Bug fixing of IDMessageJMS in case of rollback✔️ Implementation of multi-instantiation with Ansible🛠️ Technical Context:✅ Java 21✅ Quarkus✅ REST JSON Web Services✅ Maven✅ PostgreSQL✅ Event-Driven Architecture (messaging via IBM MQ)✅ Jenkins, Docker, GIT, SonarQube✅ ElasticSearch, Kibana, LogStash, Filebeat✅ OpenAPI / Design First✅ Ansible📌 Agile Methodology with SCRUM⚙ Tool- IntelliJ IDEA💼 Project: TSF(Transfer and Flow Monitoring), ELISA
- EkwateurJava DeveloperENERGY AND UTILITIESJune 2023 - May 2024 (11 months)Paris, FranceEkwateur offers 100% renewable electricity, gas, and wood to all individuals and businesses in France since September 2016.I joined the Meter-to-Cash team for the Ekwarelance and Pro-Dunning projects. This project aims to modernize the customer dunning management system for overdue payments.We were organized into a feature team of 8 people:- 1 Scrum Master- 1 Tech Lead- 5 Developers- 1 Product Owner🎯 As a Java developer, my responsibilities included:✔️ Setup of authentication and authorization system via Spring Security with JWT✔️ Design of UML class diagrams✔️ Consumption, storage, and production of RabbitMQ messages✔️ Implementation of web services with REST API.✔️ Setup of a Microservices architecture✔️ Migration of the Pro-dunning microservice from Java 17 to Java 21✔️ Retrieval of exclusion reasons and durations✔️ Postponement of the termination date to a business day after a 15-day delay✔️ Postponement of the power limitation date to a business day after a 15-day delay✔️ Setup of events for blocking (Exclusion) during dunning✔️ Exposure of dunning history for a contract✔️ Retrieval of customer balances from AWS S3 buckets via Sage✔️ Ensuring code quality (Code review + unit test development).✔️ Configuration of dev/Qual/preprod and Prod environments✔️ Deployment with ArgoCD✔️ Design of the Pro-dunning architecture🛠️ Technical Context:✅ Java 14, 17 & 21✅ Spring Boot✅ REST JSON Web Services✅ Maven & Hibernate / JPA✅ PostgreSQL✅ Event-Driven Architecture (messaging via RabbitMQ/Apache Camel)✅ Gitlab-CI, Docker/Kubernetes, AWS, GIT, SonarQube, Liquibase✅ Datadog✅ OpenAPI / Design First✅ Spring Batch✅ JHipster📌 Agile Methodology with SCRUM⚙ Tools- IntelliJ IDEA- Postman- Lens- ArgoCD💼 Projects: Ekwarelance, Pro-Dunning
- Société GénéraleJava DeveloperBANKING AND INSURANCENovember 2022 - June 2023 (7 months)Paris, FranceAs a pillar of the Société Générale group's banking model, SG CIB plays a key intermediary role, offering broad market access to issuers and intelligent placement solutions to investors.Specialties: Strategic advisory & capital raising, SG electronic services, structured finance, investment & risk management solutions, positive impact finance, transaction banking.In an international context (France, India), I contributed to the platform's development. I joined the RESG/CFT team for the Basiliq, Mars, and Mercury projects, which aim to modernize the loan, investment, and financial risk management system.We were organized into a feature team of 20 people:- 1 Scrum Master- 1 Tech Lead- 15 Developers- 1 Product Owner- 2 Business Analysts🎯 As a Java developer, my responsibilities included:✔️ Consumption, storage, and production of Kafka messages from the Basilyq web service✔️ Migration of the Mercury microservice from Java 8 to Java 17 and Mars from Java 11 to Java 17✔️ Setup of unit tests for configuration files for validation with criteria before saving to the database.✔️ Setup of a caching system with Redis on Mars & Mercury✔️ Setup of the job for retrieving French public holidays for Big Data job execution✔️ Setup of the weekly log deletion configuration with Logback on OCS✔️ Creation of Kubernetes and Jenkins configurations for Basyliq-messenger🛠️ Technical Context:✅ Java 8, 11 & 17✅ Spring Boot✅ REST JSON Web Services✅ Maven & Hibernate / JPA✅ PostgreSQL✅ Event-Driven Architecture via Kafka✅ Jenkins, Docker/Kubernetes, AWS, GIT, SonarQube, Liquibase✅ Prometheus/Grafana✅ Elasticsearch, Logstash, and Kibana✅ Ansible / Terraform✅ HashiCorp Vault📌 Agile Methodology with SAFe⚙ Tools- IntelliJ IDEA- Postman- Lens💼 Projects: Mercury, Mars, Basiliq
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Education
- Higher Technician Certificate, Application Developer InformaticsISCAE - Higher Institute of Commerce and Business Administration2013🖥️ Formation axée sur le développement logiciel Programmation orientée objet (Java, Python), bases de données (SQL), architectures systèmes. Gestion de projet Agile (Scrum) et outils collaboratifs (Git, UML). Conception d’applications métier (cycle complet : analyse → déploiement). 🛠️ Compétences techniques Développement Full-Stack : Frontend (HTML/CSS, Angular) / Backend (Spring, API REST). Tests logiciels (unitaires, intégration) + documentation technique (Javadoc). Optimisation de bases de données (+20% de performance sur requêtes complexes). 🚀 Projets marquants Application de gestion scolaire sécurisée (authentification, gestion des notes). Outil collaboratif de suivi de projets avec workflows automatisés (CI/CD basique). Migration d’un système legacy vers une architecture modulaire (Java/Spring). 🔍 Focus innovation : Intégration de pratiques DevOps (Docker, Jenkins) et veille sur les langages émergents.
- Level 5 Specialization Certificate (CS), Java, Java EE, Spring, and AndroidObjis - Lyon2018📜 Certificat de Spécialisation Niveau 5 - Java/Spring/Android 🔥 Compétences maîtrisées Backend : Java EE • Spring (Boot, MVC, Security) • Hibernate • Maven Mobile : Développement Android Architecture : POO • Design Patterns • CI/CD 🚀 Réalisations clés Développement d’applications web/mobile full-stack (Java EE + Android). Implémentation de RESTful APIs avec Spring et sécurisation des données (JWT, OAuth2). Optimisation de performances avec Hibernate. Gestion de builds et dépendances via Maven (multi-modules, profils). 🌟 Points forts Formation dispensée par Objis (expert Java depuis 2005, +3000 ingénieurs formés). Projets pratiques alignés sur les standards industriels (tests unitaires, CI/CD basique). Veille sur les bonnes pratiques : code propre, SOLID, documentation technique. 🛠️ Stack : Java 11+ | Spring Boot | Hibernate | Android | Maven
Certifications
- Professional Scrum Product Owner I (PSPO I)Scrum.org
- DevOps Foundation® CertificationDevOps Institute