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Ludovic LerusLL

Ludovic Lerus

Senior Fullstack Developer (node.js + React.js)

€600/day
13 projects
Paris, FR
8-15 years

Average response time: 24 hours

Freelancer profile translated to English.
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About Ludovic

Full-stack JavaScript and TypeScript Developer.

Specialties:
· Backend: In-depth expertise with Node.js, Fastify, and PostgreSQL.
· Frontend: Specialized in React.js and Next.js.

Over 8 years dedicated to creating MVPs and redesigning web apps for startups and SMEs.

🛠️ What I can do for you:
· MVP Creation from scratch: Complete development using React.js, Next.js, Node.js, and TypeScript.
· Web Application Development and Redesign: Design of scalable and high-performance web solutions, tailored to your needs.
· Pixel Perfect Web Integration: Faithful transformation of your Figma mockups into interactive user interfaces.
· Project Management with Linear: Rigorous project tracking with agile methodologies for on-time delivery.
· Continuous Maintenance and Support: Offering maintenance services to ensure long-term application performance and security.

🧑‍🤝‍🧑 Who I've worked with:
· Collaboration with renowned companies and innovative startups: Significant experience with clients such as Euler Hermes and various dynamic startups.

💪 Key advantages of my profile:
· Extensive experience in development and project management: Mastery of full development cycles and agile project management.
· Product and Business Vision: As a developer, I possess not only technical expertise but also a solid understanding of business objectives, enabling me to adapt technological solutions to your company's specific needs.
· Transparent and Effective Communication: Commitment to providing clarity on costs, deadlines, and development methods.

Technical Stack:
· JavaScript / TypeScript
· Node.js, Fastify, Express, Nest.js
· React.js, Next.js
· Tailwind CSS
· PostgreSQL
· Docker, Heroku, Vercel
  • French

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Filt
    Fullstack Developer
    SOFTWARE PUBLISHING
    April 2024 - Today (2 years and 4 months)
    FIlt is a SaaS solution that simplifies accounting work.

    What I did:
    Designed and developed a SaaS platform from scratch, enabling accountants to extract data from accounting books through a no-code interface.

    Key Contributions:

    - Fullstack Development: Design and implementation of a scalable and secure architecture for the entire solution.
    - UI Collaboration: Translation of Figma mockups into responsive and user-friendly interfaces.
    - DevOps Management: Deployment and maintenance of the application on Scaleway with Coolify, ensuring continuous delivery.
    React.js Next.js Node.js MongoDB Fastify PostgreSQL Tailwind CSS SWR
  • Birding
    Fullstack Developer
    BANKING AND INSURANCE
    January 2023 - January 2025 (2 years)
    Qalestra is a SaaS for financial compliance and advisory services.
    👉🏻 https://birding.fr/
    👉🏻 https://qalestra.io/

    What I did:
    Developed a SaaS platform from scratch, aimed at providing financial compliance services.

    Key Contributions:
    - Designed and implemented the fullstack architecture of the solution, ensuring scalability and data security.
    - Collaborated with designers to transform Figma mockups into responsive UI components, integrated via a custom Design System in Storybook.
    - Developed specific features to enhance user interaction, such as visual data flows with React Flow.
    - Managed continuous deployment and maintenance of the application on Vercel and Heroku, optimizing service performance and availability.
    Next.js Fastify PostgreSQL TypeScript Storybook React.js Vercel Heroku Node.js Docker Agile Methodology
  • Musair
    Fullstack Developer
    ARTS AND CRAFTS
    November 2020 - January 2025 (4 years and 2 months)
    Musair offers a new path to art, an immersive experience based on creative writing, between storytelling and meditation.
    👉🏻 https://app.musair.fr

    What I did:
    Created the frontend and backend from scratch for an initial POC, followed by the development of successive versions for indoor and outdoor museum tours.

    Key Contributions:
    - Developed a POC to attract investors and acquire early customers.
    - Designed and implemented version 1 of the product for indoor museum tours, working closely with a graphic designer via Figma to ensure an optimal user experience.
    - Expanded the product with version 2 to include interactive outdoor tours, using Mapbox for interactive mapping.
    - Created robust backend solutions with Node.js and Fastify, and managed their deployment on Heroku.
    - Integrated advanced technologies such as Strapi for content management and Docker for containerization.
    Next.js Fastify PostgreSQL Strapi TypeScript Node.js Heroku Vercel React.js Mapbox SWR Docker Agile Methodology

Reviews

5.0

Out of 10 ratings

S

Solenne

C-981

Reviewed on 8/24/2025

Ludovic quickly integrated into our mission and took charge of our project (React / Node.js). Highly autonomous, he asks the right questions, quickly understands technical challenges, and proposes relevant improvements that advance the product. Easy, professional, and effective collaboration. I highly recommend!
M

Michele

esic

Reviewed on 1/23/2019

very attentive and friendly I would be happy to hire Ludovic again

Recommendations

FU
Guillaume GalasGG
Guillaume GalasGG
Former user and 2 other people have recommended Ludovic

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Education

  • Nelson Mandela Metropolitan University
    Nelson Mandela Metropolitan University
    2015
    Android | Java | CSL (volontaire à Maranatha Streetworkers Trust) Pour la 4ème année, nous devons étudier dans un pays étranger. J'ai choisi de partir en Afrique du Sud à l'université NMMU à Port Elizabeth.
  • Expert in Information Technology
    Epitech
    2017
    Assembleur x86_64 | C | C++ | Java | C# (.NET) | Python | SQL | Administration système | Système Linux Diplôme bachelor obtenu en 2015. Le dipôme d'Expert en Technologies de l'Information sera obtenu en 2017.

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