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Julien K.JK

Julien K.

Automation tasks - Python Developer

€450/day
Douarnenez, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

Python Developer Data & automation , I help companies design custom tools for managing and visualizing their data, as well as automating tasks.

Trained in 2020 (University of Nice, one-year distance learning), I have been using Python daily for several years. My field experience allows me to offer concrete, reliable, and directly usable solutions.
I primarily work on data transformation and cleaning issues, API development, and the creation of internal data visualization and exploitation tools.

I design user-oriented solutions directly linked to the user and their needs, with a clear objective: to simplify the existing, automate low-value tasks, and provide robust, maintainable, and efficient tools.

My solutions are built according to your needs. No unnecessary tools, only efficiency.

Achievements
Design of all internal tools for a mystery shopping company: document anonymization (GDPR), file processing and consolidation, report generation, CRM, contractual and operational tools.
Development of a management tool for a caterer: centralization of recipes and automation of the distribution between production and service.
Creation of an application for insurance agents: map visualization of the client portfolio, advanced filters (type, distance), and sending targeted email campaigns, generation of statistics.

Skills
Pandas, Polars, DuckDB
FastAPI
SQLAlchemy
Pydantic
Matplotlib, seaborn, plotly
  • French

    Native or bilingual

  • English

    Conversational

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

Experience

  • DDEQUAL
    SaaS Development
    SOFTWARE PUBLISHING
    January 2024 - Today (2 years and 7 months)
    Douarnenez, France
    Development of SaaS for VSEs, SMEs, and sole proprietorships via VegApp by ddequal, the development arm of the company.
    OVH FastAPI request Pydantic OAuth2
  • Lecocq
    Excel Expert
    HOSPITALITY
    July 2025 - October 2025 (3 months)
    Creation of an Excel file for managing services, menus, and kitchen dispatch for the kitchen and service team for events in stadiums.
    excel Proactive Active listening Data cleaning Project management
  • DDEQUAL
    Director of mystery shopping company and data management
    August 2023 - Today (3 years)
    Software solutions developer for a mystery shopping company with a large network of investigators in France. I am notably responsible for the development of company-specific applications (data validation programs, CRM, website, HTML CSS questionnaire creation) as well as data management.
    Python Programming Administrative management Questionnaire design Website design Recruitment

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Skill set

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