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Julien K.JK

Julien K.

Task Automation - Python Developer

€350/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 data management and visualization, as well as task automation.

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

I design user-oriented solutions directly linked to the user and their needs, with a clear objective: 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: recipe centralization and automation of distribution between production and service.
Creation of an application for an insurance agent: map visualization of the client portfolio, advanced filters (type, distance), and targeted email campaign sending.

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

  • Lecocq
    Excel Expert
    HOSPITALITY
    July 2025 - October 2025 (3 months)
    Creation of an Excel file for managing services, menus, and kitchen dispatch for the catering and service team for stadium events.
    Excel Proactive Active Listening Data Cleaning Project Management
  • DDEQUAL
    Python Developer - Customized Solutions Oriented
    August 2023 - Today (2 years and 10 months)
    Software solutions developer for a mystery shopping company with a large network of investigators in France. My responsibilities include 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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