Freelancer profile translated to English.
Back to original languageAbout Khalid
🔍 Looking for a Java expert for your backend projects?
Need a specialist in Kafka, Spring Boot, and microservices to strengthen your team or develop a robust and scalable solution? You've come to the right place!
💻 Who am I?
I am Khalid Boulssane, a Java backend developer, passionate about distributed architectures, system performance, and scalability. With several years of freelance experience, I've had the opportunity to collaborate with leading companies and innovative startups.
✅ Expertise:
Backend development with Java (21, 17, 11) / Spring Boot / Kafka.
Hexagonal Architecture, DDD, Clean Code, TDD, Event Sourcing.
Microservices, REST APIs, Docker, Kubernetes, GCP, Agile Methodology.
🏆 Experience with renowned companies:
BforBank (Bank): Development of microservices for account and user management communicating primarily via Kafka or REST APIs.
Sunday (Fintech): Development of a QR Code payment system for restaurants.
Co-founder of Batisynchro: SaaS platform optimizing construction site management in the BTP sector.
Société Générale Private Banking: Investment advisory application for private bankers.
🔍 Why work with me?
Reliable & autonomous: I integrate quickly into teams and provide adapted solutions.
Clean & maintainable code: Passionate, self-taught, and autonomous, I've completed several missions where I've learned a lot and increased my sensitivity to good software development practices such as TDD, hexagonal architecture, adherence to SOLID principles...
📩 Want to discuss a project? Let's talk now!
💥 Keyword:
Java | Spring Boot | Hibernate | TDD | Clean Code | Javascript | Backend | SQL | Git | GitHub | SOLID | JUnit | Microservices | React | Fullstack | Docker | PostgreSQL | Vavr | Hexagonal Architecture | REST API | Kafka | React
English
Fluent
French
Native or bilingual
Can work on-site
Grasse (up to 10km)
Experience
- mygustoFounder of mygustoJune 2025 - Today (1 year)MyGusto simplifies online ordering for butchers, cheesemongers, caterers, greengrocers, fishmongers… (artisanal food shops). Customers order in a few clicks, and a ticket is automatically printed in the artisan's shop. mygusto.fr
- BpifranceFullstack Java / Angular DeveloperApril 2025 - Today (1 year and 2 months)Paris, FranceWithin Bpifrance, I contributed to two strategic projects on Java Spring Boot and Angular stacks. Firstly, I joined a team dedicated to developing an investment tracking web application, allowing investors to manage and monitor their portfolios in real-time. I then joined the Customer Onboarding team, responsible for the new client onboarding process. The objective: to support each company or project leader from their initial contact with Bpifrance, qualify their needs (loans, support, financing), and guide them towards the most suitable solutions.
- SipiosJava DeveloperTECHOctober 2021 - Today (4 years and 8 months)Paris, FranceSipios — Sipios is an IT consulting firm that develops simple and secure applications that revolutionize finance in record time!Mission carried out remotely (full remote)
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Education
- Java DeveloperOpenClassroomsFormation en alternance chez Société Générale Stack : Java, Spring Boot, MySQL, JDBC, SQL, JUnit, Maven, Git/GitHub, Spring Security, OAuth 2.0,UML, Swagger, TDD, API REST, Docker, JUnit, Microservices Analyser un cahier des charges et choisir une solution technique adaptée parmi les solutions existantes. Concevoir l’architecture technique d’une application à l’aide de diagrammes UML. Créer des application web dynamiques grâce à Java. Communiquer avec une base de données pour stocker et requêter des informations. Développer de manière professionnelle grâce au framework Spring. Mettre en œuvre des tests unitaires et fonctionnels. Utiliser les outils les plus connus d’intégration continue. Produire une documentation technique et fonctionnelle de l’application.
- Web DeveloperOpenClassrooms2020Découper, assembler et intégrer tous les éléments d’une maquette graphique en HTML5 et CSS Ajouter du contenu audio et vidéo en HTML5 Animer les pages web avec CSS3 Construire un site web fluide s’adaptant à tout type d’écran (web, smartphone et tablette) Faire réagir la page web en fonction des actions de l’utilisateur en JavaScript Se connecter à un service web pour exploiter des données tierces (API) Programmer en orienté objet Créer, gérer et afficher le contenu d’une base de données