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Ouael BenchagraOB

Ouael Benchagra

Senior Java Developer | Java Spring Boot | AWS

€500/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ouael

Senior Java Developer | Java Spring Boot | AWS Cloud | Java Microservices


Looking for a Senior Java Developer to modernize your backend and migrate to AWS?

With 8 years of Java experience, I work on critical projects — payments, microservices, cloud — in startups and large corporations (Accor Hotels, Capgemini/BPI France).

What I do:


Java & Spring Boot

  • REST APIs, Java Spring Boot, Spring Security, Spring Data JPA
  • Java Microservices Architecture, Clean Code, TDD (JUnit/Mockito >80%)

AWS Cloud & Migration

  • Migrate Java applications to AWS cloud-native
  • ECS, Lambda, SQS/SNS, RDS, Fargate, Terraform (IaC)
  • Docker, Kubernetes, CI/CD (Jenkins, GitLab)

Event-Driven
  • Apache Kafka event-driven architecture
  • Listeners/publishers, topics, high availability

Why me?
✅ Senior Java on critical projects (PCI DSS, fintech, hospitality)
✅ Real-world AWS in production at Accor Hotels
✅ Kafka & Event-Driven — rare skill
✅ Tech Lead: code review, junior mentoring

Let's talk about your Java / AWS Cloud project 👇
Software Publishing
Digital Business Models
Digital and IT Services
Consulting and Audits
Banking and Financial Services

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Toulouse (up to 50km), Bordeaux (up to 50km), Lille (up to 50km)

Experience

  • Accor SA
    Consultant / Fullstack Java Developer
    HOSPITALITY
    December 2023 - Today (2 years and 6 months)
    Évry, France
    Intervention on 3 critical projects within a world leader in the hospitality industry:
    Payment Platform Multi-PSP (Stripe, Adyen)
    Development of PCI DSS compliant integrated payment pages, processing thousands of transactions per day with a smooth and reliable UX.
    Financial Management Backend
    Design and maintenance of a high-availability financial reconciliation system, user management, and multi-payment gateway integration.
    AWS Cloud Migration
    Setting up cloud infrastructure for a microservices project via AWS (EC2, ECS, IAM, VPC) and Terraform (IaC) — modernizing legacy architecture towards cloud-native.

    🔧 Stack: Java 8/11/17 · Spring Boot · Microservices · AWS (EC2, ECS, ECR, Lambda, SQS/SNS, ALB, Cloudwatch) · Terraform · Vuejs · Docker · Jenkins · GitLab CI · SonarQube · Stripe · Adyen
    Java Microservices Spring boot AWS CI/CD
  • Bpifrance
    Software Engineer Lead Java/Angular
    BANKING AND INSURANCE
    May 2021 - September 2023 (2 years and 4 months)
    Paris, France
    Technical lead mission for two strategic projects within the French public investment bank:

    Investment Monitoring & Valuation
    Build and TMA of a web solution for investment monitoring with real-time reporting.

    Grant Award Platform (Event-Driven)
    Design of an event-driven architecture with Apache Kafka to accelerate and automate the grant award process — significant reduction in processing times.

    As Lead, I was responsible for code reviews, mentoring juniors, writing technical documentation, and conducting Agile ceremonies.

    🔧 Stack: Java 8/11/17 · Spring Boot · Apache Kafka · Angular 13 · Kubernetes · Datadog · Kibana · Oracle · Liquibase · Jenkins · SonarQube · SAFe Agile
    Java Apache Kafka Angular Event-driven architecture Kubernetes
  • Vision Business Consulting
    Java/Angular Developer
    ENERGY AND UTILITIES
    April 2018 - April 2021 (3 years)
    Casablanca, Morocco
    Development of two business applications from scratch for international clients:

    Solar Panel Monitoring IoT Application (Client Singulair)
    Development of a web solution to detect, plan, and report anomalies on photovoltaic installations internationally, via drones.

    Staff Health Management System (Client Safescore)
    Build of a health management information system with regulatory declarations and data collection for a multi-site environment.

    🔧 Stack: Java 8 · Spring Boot · Spring Security · PostgreSQL · Angular 4 · JWT · Maven · Scrum Agile
    Java Angular PostgreSQL API Agile method

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Education

  • Master en Système d'Information, Réseaux et Multimédia Faculté des Sciences
    Faculté des Sciences Dhar Mahraz
    2017

Skill set (7)

Java
Spring boot
AWS
Microservices
Apache Kafka
AWS Cloud
Angular

Categories