Freelancer profile translated to English.
Back to original languageAbout Houssem
About me:
Full Stack Developer with 8 years of experience specializing in the design and development of robust and scalable web applications. My dual expertise in Backend (Java/Spring Boot) and Frontend (Angular) allows me to work across the entire development chain, from architecture to production.
Technical Expertise
Backend:
Java (8, 11, 17+) & Spring Boot (REST API, Spring Data, Spring Security)
Microservices and monolithic architectures
REST API design and service integration
Frontend:
Angular
Development of modern and responsive user interfaces
DevOps & Cloud:
AWS (EC2, S3, Lambda, CloudWatch)
Docker, Kubernetes
CI/CD (Jenkins, GitLab CI, GitHub Actions)
Infrastructure as Code
Databases:
PostgreSQL, MySQL, MongoDB
Query optimization and modeling
My Approach
✅ Clean Code: maintainable and well-tested code (JUnit, Mockito, Jasmine)
✅ Agility: Scrum/Kanban methodologies, squad work
✅ Autonomy: capable of taking a project from A to Z
✅ Communication: regular exchanges with business and technical teams
Why Choose Me?
Versatility: involvement in all application layers
Experience: complex architectures and high-load projects
Responsiveness: on-time deliveries with quality
Adaptability: ability to quickly acquire new skills
Availability
🟢 Immediately available for missions in the Paris region (on-site/hybrid) or remote.
Do not hesitate to contact me to discuss your project. I would be happy to discuss your needs and see how I can assist you.
French
Native or bilingual
English
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- BPIFRANCE ‑Assurance ExportJava Angular Development ConsultantOctober 2023 - Today (2 years and 8 months)Paris, FranceCredit insurance application: Bpifrance Assurance Export offers French exporters solutions covering the different stages of export contracts.• Implementation of advanced electronic signature for complete dematerialization of contracting processes.• Design and development of a unified authentication system via My Bpifrance Account, centralizing secure access to the entire application ecosystem.• Architecture and development of Kafka event-driven services: implementation of producers/consumers for real-time asynchronous communication between microservices, ensuring scalability and resilience.• Backend development structured according to SOLID principles and Clean Architecture, with systematic application of Design Patterns (Factory, Strategy, Builder, Repository).• Proactive security: audit and resolution of critical/high CVEs, substantial reduction of technical debt through continuous refactoring and systematic code review.• Adoption of Trunk-Based Development (TBD): simplification of the Git workflow and acceleration of delivery cycles with decoupled branch deployments.• Operational support: management and rapid resolution of production incidents to ensure service continuity (availability >99%).• Management of major technical migrations: Java 11 → 17, APIC → Tyk, Angular 14 → 20, Bootstrap 3 → 5, ensuring the sustainability and performance of applications.• Evolutionary and corrective maintenance with rigorous anomaly tracking and patch planning.• Implementation of a quality culture: systematic implementation of unit tests (JUnit, Mockito) and integration into CI/CD pipelines.• Technical stack: Java 17, Spring Boot, Spring Batch, Angular 20, PostgreSQL, Hibernate, Kafka, REST API, Maven, npm• DevOps & Cloud: Kubernetes (Tanzu)
- OALIAFull-Stack Java Development ConsultantJanuary 2021 - July 2023 (2 years and 6 months)Paris, FranceOalia Excellence – Next-generation procurement management software and a complete SaaS solution integrating CRM, invoicing, accounting, inventory management, planning, and decision-making pilotage.• Design and development of robust integration connectors: bidirectional synchronization between heterogeneous systems via REST/SOAP APIs, ensuring real-time data consistency and integrity.• Service-oriented backend architecture: design of resilient microservices with advanced error handling, automatic retry mechanisms, and structured logging for complete traceability.• Full-stack development of strategic business features in compliance with functional specifications, SOLID principles, and industry best practices.• Design and optimization of BI cubes for multidimensional analysis (Business Intelligence): development of efficient HQL queries and decision-making dashboards.• Application maintenance: management of the complete anomaly lifecycle (analysis, correction, deployment) with strict adherence to contractual SLAs.• Software quality assurance: unit test strategy (JUnit) with CI/CD integration, aiming for >75% code coverage and reduction of regressions.• Technical stack: Java 11, Spring Framework, Hibernate/JPA, HQL, PostgreSQL, REST/SOAP API, Maven• Tools & DevOps: GitLab CI/CD, IntelliJ IDEA, JUnit, Mockito, SonarQube
- FLOWBIRDFull-Stack Java Angular DeveloperSeptember 2018 - December 2020 (2 years and 3 months)Paris, FranceESTBO – Ticketing integration component ensuring bidirectional interfacing between community transport systems and operator back-offices for secure exchange of data, software, and operational parameters.• Design and development of Apache Camel routes to orchestrate complex integration flows between heterogeneous systems in the public transport sector.• Implementation of Enterprise Integration Patterns (EIP): Content-Based Router, Message Filter, Splitter, Aggregator to ensure reliability and traceability of exchanges.• Development of business data transformers: mapping, validation, enrichment, and normalization of messages according to ticketing protocols.• Implementation of Quartz scheduled jobs for intelligent management of connection time slots, synchronization, and Camel route monitoring.• Development of modern Angular interfaces for application configuration, real-time flow monitoring, and operational tracking with business dashboards.• AWS cloud integration: use of S3 for distributed storage, SNS for pub/sub messaging, Lambda for serverless event-driven processing.• Security via Keycloak: authentication and fine-grained authorization management for access to sensitive functionalities.• Quality assurance: comprehensive unit and integration testing strategy with targeted coverage of Camel routes and critical business rules.• Technical stack: Java 11, Spring Boot, Apache Camel, Quartz Scheduler, Angular, Maven• Cloud & Infrastructure: AWS (S3, SNS, Lambda), Docker, Kubernetes, Keycloak• DevOps: Jenkins CI/CD, Nexus Repository, Git
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Education
- Diplome national d'ingénieurs en informatiqueUniversité Tunis El Manar Faculté des sciences de Tunis2019Diplome national d'ingénieurs en informatique
- Scientific Preparatory Cycle: Math-PhysicsUniversity of Monastir2016scientifique : Math‑Physique