Freelancer profile translated to English.

Description

Tech Lead Java with 13 years of experience on critical banking backends: bank card, payment, monetics, and fraud.

For 3 years, I have been technically leading BforBank's Bank Card platform: Java 21 / Spring Boot microservices, Kafka event-driven architecture, Apple Pay / Google Pay tokenization, real-time processing under VISA SLA, all cloud-native on GCP / Kubernetes (GKE, ArgoCD, GitLab CI/CD, GraalVM).

What I bring: design of resilient architectures (idempotence, retry/DLQ, sync/async trade-offs), demanding software quality (TDD, Clean Architecture, Hexagonal), CI/CD industrialization, and coaching squads of up to 13 developers.

Also proficient in fraud/dispute and banking IT modernization: at BPCE-IT, I designed an Event Sourcing / CQRS architecture for the private banking cloud (-15% downtime).

In parallel, I designed and delivered end-to-end a web platform for a private clinic: online appointment booking and management back-office (Java, Spring Boot, Thymeleaf) — from business needs to production.

Expertise: Java 21 · Spring Boot · Kafka · Cloud GCP / Kubernetes · Microservices · Hexagonal Architecture · TDD.

Available for Tech Lead / Backend Architect missions in demanding banking environments.

Industry field of expertise

Languages

English
Fluent
French
Native or bilingual
Arabic
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 50km)

IAMINE Compta — Projet personnel
Java Architect & Developer — Accounting Software
June 2026 - Today (2 months)
Design and development, in full autonomy, of accounting software for EURL with corporate tax — from architecture to implementation, with the goal of replacing an online accounting firm.

· Double-entry bookkeeping on PostgreSQL 16: ACID transactions, balance constraint, FEC numbering, chained hash, and immutability of entries, Flyway migrations
· Kafka event-driven architecture: ingestion of bank transactions (Qonto API, OAuth2) via a native Quarkus / GraalVM microservice, automatic categorization, and idempotent entry creation
· Polyglot persistence: PostgreSQL (ACID accounting truth) + MongoDB (documents, OCR, audit) + Azure Blob Storage for supporting documents
· Preparation of tax returns (VAT CA3, corporate tax) and DGFiP-compliant FEC export
· GitLab CI/CD, Docker, Kubernetes target (AKS) with Terraform; React frontend

Stack: Java 21 · Spring Boot 3 · Quarkus · Apache Kafka · PostgreSQL · MongoDB · Azure · Docker · Kubernetes · Terraform · React
Quarkus Apache Kafka PostgreSQL Terraform Microsoft Azure
Liamedical
Full-Stack Java Developer — Clinic Platform
October 2025 - June 2026 (8 months)
End-to-end design and delivery of a web platform for a private clinic: website with online appointment booking for patients and management back-office for the team.

· Gathering requirements from clinic teams, designing the architecture, and complete development in autonomy
· Java / Spring Boot backend, Thymeleaf server-side rendering: appointment booking process, schedule and activity management
· Deployment on the clinic's infrastructure and user support

Stack: Java · Spring Boot · Thymeleaf
BforBank
Lead Software Engineer / Tech Lead Java
BANKING AND INSURANCE
January 2023 - Today (3 years and 6 months)
Puteaux
Tech Lead on the Bank Card and mobile tokenization platform (Apple Pay / Google Pay).

• Design and development of Java microservices (Spring Boot 3, Java 21) on GCP / Kubernetes
• Implementation of a Kafka event-driven architecture (real-time VISA flows management)
• HTTP vs Kafka trade-offs to optimize latency on critical paths
• Migration Spring Boot 2 → 3 and performance optimization with GraalVM
• Resolution of a critical latency incident via implementation of a GCP Private Link ↔ on-prem connection

Stack: Java · Spring Boot · Kafka · GCP · Kubernetes · PostgreSQL · ArgoCD · GitLab CI/CD
Spring boot Apache Kafka Kubernetes Google cloud Java 21