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Ibrahima DiagneID

Ibrahima Diagne

Supermalter

Lead Java / AWS / Angular Developer

€650/day
8 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ibrahima

Software engineer with 10 years of experience, specializing in the design of scalable, robust, and high-performance systems. Technical referent on several strategic projects, I am involved in the entire development cycle, from design to production. My expertise covers distributed architectures, cloud, microservices-oriented environments, and full-stack development. I have managed teams, led workshops on Clean Code and development best practices, and designed reusable software libraries deployed across industrial programs.
  • French

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • NaTran
    Lead Developer
    ENERGY AND UTILITIES
    November 2023 - Today (2 years and 7 months)
    Bois-Colombes, France
    Project: Development of ETR, a strategic tool for monitoring field meter readings in the gas network. Full microservices architecture deployed on AWS.

    I implemented the project's application foundation with a functional breakdown into microservices. I also contributed to the development of several products covering the entire business flow: acquisition, validation, calculation, up to the publication of field meter readings. As a technical referent, I was responsible for architectural decisions, formalizing internal practices, and managing software quality.

    • Definition of testing strategy (unit, integration, Kafka contract tests) and CI/CD integration via GitLab.
    • Design and development of technical libraries for authorization management.
    • Implementation of the technical foundation: functional breakdown, business event management, application monitoring via CloudWatch.
    • Leading technical workshops: Craftsmanship, Clean Code, TDD, reactive programming, distributed testing (Kafka, WebFlux).

    Technologies: AWS, Java, Spring Boot 3, Angular, Reactor, Kafka, PostgreSQL, Terraform
    Kafka AWS Java Spring Angular Spring boot
  • NaTran
    SENIOR SOFTWARE ENGINEER JAVA/AWS/ANGULAR
    ENERGY AND UTILITIES
    September 2018 - November 2023 (5 years and 2 months)
    Bois-Colombes, France
    Project: RIO Program, aimed at revamping GRTgaz's service offering IT system around a microservices architecture deployed on AWS.

    Within a program structured into over 10 product teams and involving more than 100 developers, I contributed to the implementation of the common technical foundation, the definition of the application architecture, and the drafting of shared best practices. I also participated in the development of several critical products for gas network management, including PGD (gas day process), nomination management (complete steering of transmission requests), and billing. Project executed at scale according to the SAFe Scrum framework.

    • Full contribution: technical scoping, architecture definition, development, production deployment, and maintenance.
    • Design and development of reactive and scalable business products, with automated tests at all levels.
    • Monitoring of applications in production: monitoring, incident analysis, bug fixes, and industrialization of solutions.
    • Design and development of shared libraries used transversally by all teams.
    • Regular practice of pair programming and mob programming to promote collective quality and knowledge sharing.

    Technologies: AWS, Java, Spring Boot, Angular, Reactor, Apache Kafka, MongoDB, Axon Framework, Terraform
    Java Spring Kafka Amazon Web Services (AWS) Angular
  • CANAL+
    SOFTWARE ENGINEER JAVA/ANGULAR
    PRESS AND MEDIA
    July 2016 - September 2018 (2 years and 2 months)
    Issy-les-Moulineaux, France
    As a developer, I worked on the complete redesign of Studio Canal's application portfolio. In detail:
    • Design and development of APIs.
    • Enhancements and maintenance on legacy applications.
    • Data migration from the old IT system to the new IT system
    Java 8 Angular Spring boot Spring boot Maven

Reviews

5.0

Out of 2 ratings

S

Sonia

Développeur Expert - NaTran - DSI - Commercialisation et Production de l'Offre / SIO / RIO

Several months project

-

Reviewed on 5/11/2026

I really enjoy working with Ibrahima on a daily basis. Beyond his technical skills, he is reliable, committed, and always pleasant to interact with. He quickly understands our challenges, proposes suitable solutions, and moves forward autonomously while remaining available to the team. His seriousness and mindset clearly contribute to the smooth running of projects. I recommend Ibrahima with pleasure for any future assignments.
S

Sonia

NaTran - DSI - Commercialisation et Production de l'Offre / SIO / RIO

Several months project

-

Reviewed on 10/8/2025

A big thank you for your intervention on this project. You quickly grasped the context, provided a clear and effective diagnosis, and got everything back on track within a record time. As a developer, you demonstrated great autonomy, a true sense of responsibility, and excellent technical leadership. You identified critical points and proposed concrete solutions that unblocked the situation. Your professionalism, your ability to quickly integrate into the team and to move things forward in a complex environment were particularly appreciated. Your contribution had a direct and visible impact on the project's success. It was a real pleasure to collaborate with you. Well done for this high-quality work!

Recommendations

DC
AJ
David Cerqueira and 1 other person have recommended Ibrahima

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Education

  • COMPUTER SCIENCE ENGINEERING DEGREE
    ESIEE, July 2016
    DIPLÔME D'INGÉNIEUR EN INFORMATIQUE,

Skill set

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