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Jessica L.JL

Jessica L.

Dev React/TS | Audit & refactor AI-generated code

€550/day
Toulouse, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jessica

You have an app that's running… but it's going off the rails?

This is often a sign of AI-generated code: functional on the surface, fragile underneath. 45,000 lines, no tests, duplication everywhere, a rising infrastructure bill. The app works, but it's a house of cards.

This is exactly what I experienced with my own SaaS. And it's become my specialty.

What I do:

•Audit of AI-generated codebases: I pinpoint what's going to break
•Targeted refactoring: I make code maintainable without throwing everything away
•New React/TypeScript/Next.js features: cleanly, with a long-term vision

My profile in reality:
5 years of experience, including large-scale projects at Capgemini (Airbus Skywise, Safran Walk) and custom development at Menaps (React, React Native, Node.js).
Since then, I've been developing and maintaining my own B2B SaaS (Next.js 14, TypeScript, Tailwind, Supabase, Stripe, Vercel, React Query, React Testing Library), giving me both a product and technical perspective.

I use Claude Code daily. I know exactly what it generates well, and what absolutely needs to be redone.

Environments where I thrive:
Small teams, ambitious projects, autonomy, code reviews, Kanban. No bullshit, clear communication, serious delivery.

Bonus: mom of 2 boys, football fan and Sunday Call of Duty player. I code with seriousness, but never without good humor.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • DMax
    Fullstack Developer
    TRANSPORTATION
    October 2025 - March 2026 (5 months)
    Grenade, France
    Maintenance and evolution of multi-stack business applications: React, React Native, PHP, Django, and Python.

    Analysis and resolution of production incidents.

    Verification and analysis of server logs for diagnostics and stability improvement.

    Improvement of the performance and reliability of existing applications.

    Collaboration with technical and operational teams to ensure service continuity.

    Intervention on server environments and understanding of infrastructure issues.
    Python PHP React.js React Native Node.js
  • MENAPS
    Software Development Consultant
    CONSULTING AND AUDITS
    September 2022 - October 2025 (3 years and 1 month)
    Toulouse, France
    Development and evolution of B2B SaaS for the automotive and aerospace sectors.

    Active participation in product discussions and functional choices with business teams.

    Translation of business needs into performant and maintainable technical solutions.

    Development of interfaces in React.js / Next.js and React Native (TypeScript).

    Design of features focused on user experience and performance.

    Integration of REST APIs and close collaboration with back-end teams.

    Continuous improvement of the codebase (refactoring, optimization, technical debt reduction).

    Work in an international environment (daily English).

    Agile / Scrum methodology.
    React.js React Native English Next.js PHP
  • CAPGEMINI
    Software Engineer A
    AVIATION AND AEROSPACE
    September 2021 - September 2022 (1 year)
    Toulouse, France
    Project Walk => SAFRAN (Sept. 2021 to April 2022) UI developed with REACT (Redux, TypeScript, Hooks...), SCSS Using Gitlab and Jira SCRUM Method (Daily Meeting, Sprints, User Stories...)

    Project Skywise => AIRBUS (May to August 2022) UI developed with REACT (Context, TypeScript, Hooks, class…), SCSS Using Github SAFe Method Unit tests React Testing Library

    Feedbacks:

    JULIEN D., Scrum Master, May 13, 2022

    Jessica worked on the WALK project as a front-end developer from September 2021 to April 2022.
    Dynamic, willing, efficient, proactive, she demonstrated many qualities and continued to progress throughout her assignment, and this for her first experience as a grade A software engineer at Capgemini.
    It was a pleasure to work with her on the project.
    Jessica can improve her technical expertise to continue growing in her role as a software engineer.

    David S., PO, Nov 24, 2021

    Jessica joined the project a few months ago to cover the departure of a senior FrontEnd developer. Despite her limited experience and recent career change, Jessica delivers high-quality work. She is always attentive to feedback and incorporates it very quickly.
    She actively participates in various Agile ceremonies (daily meetings, grooming...) and works on various tasks: developing new features requested by the client or fixing bugs.
    Jessica should continue on this path, which will open many doors for her, including that of technical lead for a development team, as she has the capabilities.
    In short, it's a real pleasure to work with Jessica every day!

    Thibault B., Lead Dev, Oct 29, 2021

    Jessica joined our project (WALK) to support the development team, which was facing delays and an accumulation of bugs.

    She therefore joined the e
    React.js Typescript React Hooks Gitlab React Testing Library

Recommendations

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Aurélien Llado and 1 other person have recommended Jessica

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Education

  • Web Developer
    Wild Code School
    2021
    Développeur web
  • CQPM Aircraft Cabin Integrator
    Afpa Balma
    2015
    CQPM

Skill set

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