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Dabi KeitaDK

Dabi Keita

Full Stack Developer

€530/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Dabi

đź‘‹ Hello,
I am a Fullstack Java & TypeScript developer, with over 6 years of experience, specializing in building performant and scalable web applications. I am AWS certified and passionate about software architecture, cloud, and best development practices.

🛠️ My Expertise
Languages: Java (8 to 21), TypeScript, JavaScript
Front-end: React, Nuxt.js, Vue.js, Angular
Back-end: Spring Boot, NestJS, Node.js
Cloud & DevOps: AWS, Azure, Docker, Terraform, GitLab CI, GitHub Actions
Databases: PostgreSQL, MongoDB, SQL, Snowflake
Tests: Cypress, Jest, Serenity, JUnit, Mockito
Architecture: Microservices, Hexagonal, Modularization, Legacy Migration

⚙️ My Solutions
Fullstack development: robust and scalable front & back

Refactoring of legacy architectures into modern microservices

Creation of automation solutions (scraping, web data extraction)

Implementation of CI/CD pipelines & cloud integration (AWS, Azure)

Automated testing, clean code, security, and performance

Agile coaching (Scrum, DevSecOps, Pair Programming)

🎯 Feel free to contact me to discuss your needs. Quick response guaranteed!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 10km)

Experience

  • Fnac Darty
    Full Stack Java / React Developer
    RETAIL (LARGE RETAILERS)
    January 2025 - Today (1 year and 7 months)
    🚀 Key achievements:
    Development of new back-end and front-end features for the customer area and the purchase funnel (Java 21 / React).

    Active participation in the architectural refactoring project, with a transition to a modular hexagonal architecture to de-correlate tightly coupled components.

    Implementation of incident management and functional evolution for sensitive components like the customer area (address management, password, orders).

    Integration of dynamic notifications (email/SMS) via microservices connected to Kafka, optimizing post-purchase communication.

    Participation in the digitalization project of the breakdown declaration funnel, enhancing user autonomy via the Darty website.

    Java Spring boot React Typescript Apache Kafka Microservices Hexagonal Architecture WebSphere Hibernate CI/CD SonarQube Cypress Serenity BDD Notifications Dropwizard SQL Clean Code Front-end integration Front-End Development Back-End Development
  • Sanofi
    Full Stack React Developer
    HEALTH AND WELLNESS
    December 2021 - January 2025 (3 years and 1 month)
    Development of GoGemba, an industrial process optimization platform (Gemba Walk, Process Confirmation), integrated with internal datalakes for real-time KPI visibility.

    âś… Major achievements:

    Creation of an interactive factory map editor with KPIs in heatmaps.

    GoGemba ↔ Outlook connection for optimized task tracking.

    Design of BI dashboards connected to Power BI & Snowflake for strategic management.

    Implementation of a secure authentication system (Azure AD + AWS Cognito).

    Automated inter-app data migration with AWS Lambda.

    Quality-oriented development: TDD, Cypress, Jest.

    🛠️ Stack: React, NestJS, GraphQL, AWS (Lambda, S3, ECS), Terraform, Jest, Cypress, TypeScript, Snowflake, Power BI
    React Typescript NestJs GraphQL AWS Lambda Azure AD Terraform Docker Snowflake Microsoft Power BI Dashboard Cypress Jest TDD Modular Monolith REST API Agile methodology Front-End Development Back-End Development
  • Air Liquide Healthcare
    Full Stack Developer
    MEDICAL
    July 2019 - November 2021 (2 years and 4 months)
    Paris, France
    Strategic international middleware project between Salesforce and client ERPs, handling local rules (authentication, health, compliance).

    âś… Key responsibilities:

    Leading technical scoping and feasibility studies for multinational environments.

    Development of critical microservices (secure authentication, asynchronous processing, JMS visualization).

    Implementation of an analytical dashboard for migration tracking.

    Implementation of automated archiving tools and robust scripts for client databases.

    Technical lead of a quality task force, increasing test coverage from 30% to 80%.

    Full integration of unit and E2E tests, and proactive incident management.

    🛠️ Stack: Java, Spring Boot, PostgreSQL, AWS, GitLab CI, JMS, JUnit, Mockito, Scrum
    Java Spring boot Microservices Middleware AWS PostgreSQL Gitlab CI/CD CI/CD Unit test End-to-end test TDD Secure Authentication Asynchronous processing Scrum Agile methodology JMS

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Education

  • DUT, Computer Science
    IUT Paris Descartes
    2020
    DUT, Informatique
  • Engineer Degree in Computer Science
    EFREI Paris

Certifications

Skill set

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