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Haismann YannisHY

Haismann Yannis

Full-Stack Developer | React.js | Next.js

€500/day
23 projects
Montpellier, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Haismann

🚀 Full-Stack Developer for over 8 years, I have developed numerous web applications as a founder or freelancer.

✨ I created and marketed "Incomparable Kit", a React.JS & Next.JS codebase with training and documentation to accelerate web project development. It is used daily by about twenty developers on their projects within startups and large corporations.

📺 In parallel, I have a YouTube channel (@yannishaismann) where I share my knowledge and experience as a web application developer.

Here are the missions I regularly undertake:

🖥️ Frontend Development

✅ Web Application Development
✅ Website Development
✅ Landing Page Development
✅ Frontend Development with React.js, Next.js, Typescript, Javascript
✅ Use of CSS, Tailwind
✅ Integration of complex animations with Framer motion, GSAP
✅ Integration of Figma mockups
✅ Use of headless libraries with Radix UI, Shadcn or Tailwind Catalyst

🧑‍💻 Web Application Development

✅ Web Application Development
✅ Frontend Development with React, Typescript, Javascript, Next
✅ Backend Development with Node.JS, NextJs
✅ Data Management with Postgres, Supabase, Firebase, Neon
✅ Hosting and Web Services with Vercel, AWS, Heroku

🚀 API Integration

✅ Rest API
✅ GraphQL API
✅ Stripe API Integration

🏆 Web Development - Full Stack

✅ Custom business software development
✅ Backend Development: Node.js, Next.Js
✅ Frontend Development: Typescript, JavaScript, React
✅ Performance Optimization
✅ Debugging

🕒 Availability

✅ Available 7 days a week via malt messaging
✅ Response within one hour

Need a full-stack or front-end developer?
Need to integrate APIs?

Contact me!
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Incomparable Kit
    Incomparable Kit
    SOFTWARE PUBLISHING
    September 2024 - December 2024 (3 months)
    🙋‍♂️ What is Incomparable Kit?

    Incomparable Kit is a Next.js boilerplate (codebase) designed to x10 the development of a SaaS for developers. It combines a robust architecture, reusable components, and comprehensive documentation to enable developers to quickly start their projects.


    ✨ Why did I choose to work on this project?

    As the founder of Incomparable (a SaaS creation agency), I identified a crucial need: to optimize our internal development process while creating a solution that could benefit the entire Next.js developer community. This project represented the perfect balance between technical expertise and product vision, allowing me to develop projects 2 to 3 times faster within my agency and also generate revenue by marketing this codebase to other developers.


    ⚡️ Key Challenges

    - Designing a scalable and maintainable architecture that meets the needs of modern SaaS
    - Creating clear and intuitive documentation so that any developer (even the most junior) can understand and use it
    - Developing comprehensive video training to support developers
    - Implementing an automation system for access management (GitHub, Discord, training)
    - Creating an effective marketing strategy to market the boilerplate


    🎯 Results

    - In 2 months, about twenty developers are already using the boilerplate (+€3,000 in revenue)
    - Active community on Discord
    - Significant reduction in development time for SaaS projects


    👀 Discover Incomparable Kit

    https://incomparablekit.com/
    Product Manager Marketing CTO Full-stack Developer UX/UI Designer Social Media Next.js React.js Prisma Vercel Figma Typescript JavaScript User Testing E2E Test
  • Proced.AI
    Turnkey SaaS
    SOFTWARE PUBLISHING
    July 2024 - August 2024 (1 month)
    Toulouse, France
    🙋‍♂️ What is Proced.ai?

    Proced.ai is a tool that uses AI to automate procedure documentation, facilitating skill transfer, training, and team efficiency.


    ✨ Why did I choose to work on this project?

    A true entrepreneurial adventure, with in-depth reflection on our ICP's pain points to identify the 'game-changer' features of this MVP.

    Then, we move on to a project including AI, a Chrome extension, and a Notion-like editor, to be completed in 30 days. This is exactly the kind of challenge that my agency "Incomparable" team loves!



    ⚡️ Key Challenges

    - Creating a Chrome extension more powerful than Loom
    - Creating a text editor more powerful than Notion
    - Managing the organization of thousands of procedures while offering a simple UX
    - Project to be delivered turnkey in less than 30 days (UX/UI Design, Web Development, PO, Production Deployment)


    👀 Discover Proced.ai

    https://app.proced.ai/
    Product Owner UX/UI Design Full-stack Development Next.js React.js Prisma Vercel TailwindCSS CTO as a Service Tech Lead Typescript ReactJS Nextjs Figma Zod
  • Valentia
    Turnkey SaaS
    ARTS AND CRAFTS
    January 2024 - February 2024 (1 month)
    Toulouse, France
    🙋‍♂️ What is Valentia?

    A marketplace connecting French artisans and historical monuments with tourists, curious individuals, and enthusiasts for a unique experience.

    This project gives a new lease of life to artisans by allowing them to share their know-how during a unique moment while being compensated.



    ✨ Why did I choose to work on this project?

    I am patriotic myself and take immense pleasure in visiting remote villages in France with my wife. We love having unique and authentic experiences by talking with locals or visiting timeless places.

    So, naturally, when Valentin told me about Valentia, I immediately offered an attractive price to ensure I would work on this project, of which I am the first customer!

    In addition, they gave us carte blanche on the technical side. The Incomparable agency was able to develop Valentia at lightning speed and deliver 90% of the features in 30 days.



    ⚡️ Key Challenges

    - Creating a user space, a dashboard for artisans, and an administrator dashboard in a short time
    - Managing payments with different rules for refunds and cancellations (Cancellation 48H before = Full Refund, Cancellation 24H before = Refund split in two, etc.)
    - Designing the UX/UI for 50% of the pages based on the project's design system
    - Project completed in less than 30 days



    👀 Discover Valentia

    https://www.valentia.art/
    Next.js React.js Prisma Typescript Vercel TailwindCSS

Reviews

5.0

Out of 15 ratings

GuillaumeG

Guillaume

Valentia

Reviewed on 2/6/2024

Yannis played a decisive role in the development of Valentia, our platform promoting French artisanal and cultural heritage. Meticulously adhering to the specifications, he demonstrated punctuality and commitment, while bringing his expertise and innovative ideas that elevated the project beyond our expectations. We are very grateful for this exceptional work and look forward to collaborating again.
C

Charles

SNAXX LABS LTD

Reviewed on 9/5/2023

Haismann did an excellent job! Despite the urgency of the mission, he delivered a high-quality product. You can feel a real passion in Haismann, which allows him, beyond the guidelines, to propose solutions and alternatives adapted to the product, making him a versatile and proactive developer. Competent and a good communicator, I recommend Haismann!

Haismann has chosen to hide 1 review

1 written review is private.

Recommendations

Karl MazierKM
Armance CampionAC
Floriane RyanFR
+2
Karl Mazier and 4 other people have recommended Haismann

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Education

  • Web and Mobile Web Developer
    ENI
    2020
    Front - End, Back - End HTML, CSS, JAVA, JAVASCRIPT, SQL, SYMFONY...

Certifications

  • NextJS
    Udemy
    2020
    TypeScript Developer Vercel Software as a Service (SaaS) Next.js Prisma React.js
  • ReactJS
    Udemy
    2018
    TypeScript Developer Firebase Firestore TailwindCSS JavaScript React.js

Skill set

Categories