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Wallen JerjoubWJ

Wallen Jerjoub

Electronics and Computer Engineering

€250/day
Nice, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Wallen

A graduate of ENSEA (Bac+5, Electronics & Computer Engineering), I design and validate systems that need to perform in real-world conditions: C/C++ firmware on STM32, industrial communication architectures in OPC-UA (Open62541 SDK integration, authentication, encryption), and deployment on embedded Linux. I validated these architectures at Elsys Design — from flux modeling to root cause analysis of anomalies, up to the reference technical documentation.

On the data side, I handle Python daily (pandas, signal processing, automation) and SQL to structure and exploit what systems report, with Power BI and advanced Excel to make it understandable for the business side.

What drives me: projects where electronics, code, and data interact — Lidar sensors and real-time control on an autonomous robot, signal processing, i2c/spi protocols learned on the oscilloscope as much as on paper.

Rigorous, autonomous, comfortable with the ambiguity of a still-unclear specification — I prefer to dig into a problem thoroughly rather than bypass it.
  • English

    Native or bilingual

  • German

    Conversational

  • French

    Native or bilingual

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

Experience

  • ELSYS DESIGN
    End-of-studies internship - Engineering
    February 2025 - July 2025 (5 months)
    Sophia Antipolis, Valbonne, France
    • Designed and documented an OPC-UA communication architecture between heterogeneous systems (Raspberry Pi, Debian/Linux VM): flux modeling, data model structuring (Pub/Sub variables).
    • Integrated the Open62541 SDK in C: network configuration, authentication and encryption mechanisms ensuring the integrity of exchanges.
    • Performed complete functional validation of the client/server system, root cause analysis of detected anomalies, and their correction.
    • Wrote the reference technical documentation (architecture, configuration, test procedures), delivered on time.
  • BASSETTI GROUP
    Business Engineering Internship
    March 2024 - September 2024 (6 months)
    Paris, France
    • Translated business needs into functional specifications usable by technical teams; interface between decision-makers and developers.
    • Project monitoring (planning, milestones, reporting) in a multi-industrial client context.
  • UNIVERSITÉ MARMARA
    Erasmus Internship
    April 2023 - July 2023 (3 months)
    Istanbul, Turkey
    • Preparation and analysis of datasets (Python/pandas), training and evaluation of a Machine Learning model (SRGAN): comparison of approaches, hyperparameter tuning.
    • Worked in English within a multicultural team.

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Education

  • Engineering degree (Master's grade)
    ENSEA PARIS
    2025
    Diplôme d'ingénieur (grade de master)

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