I will do full stack web development in nodejs, sequelize, react and nextjs

N
niklausweb
N
niklausweb
Niklaus M
5.0
5.0
do full stack web development in nodejs, sequelize, react and nextjs
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do full stack web development in nodejs, sequelize, react and nextjs
Full Screen
Full Screen
do full stack web development in nodejs, sequelize, react and nextjsdo full stack web development in nodejs, sequelize, react and nextjsdo full stack web development in nodejs, sequelize, react and nextjs

About this gig

The trend of this era is AI-powered web applications. Whether you need a full app built from scratch, an AI feature added, or a bug fixed I build fast, clean and reliable solutions.


Why choose me?

* 7+ years of experience as a full stack web developer.

* I build complete apps frontend and backend plus powerful REST APIs.

* I integrate AI using OpenAI/ChatGPT API, Claude API, chatbots and RAG.

* Expertise in SQL and NoSQL databases.

* Docker for containerization; Git with strong branching skills.

* Deployment on Azure, AWS, DigitalOcean, Vercel and Heroku.


What I offer:

* Full stack web app development from scratch.

* AI integration chatbots, OpenAI, Claude API.

* Frontend with React, Next.js, Angular.

* REST API development and backend architecture.

* Bug fixing, debugging and optimization.

* SQL / NoSQL database design and integration.

* Third-party integrations (Stripe, payments and more).

* Cloud deployment.


Tech I use:

JavaScript, TypeScript, Node.js, Express, NestJS, React, Next.js, Angular, .NET, Socket.io, Sequelize, Mongoose, MySQL, PostgreSQL, SQL Server, MongoDB, Supabase, OpenAI/Claude API.


Please contact before ordering and describe what you need.

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Databases

  • Frontend framework

    • Angular
    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Fastify
    • Next.js
    • Node.js
    • ASP.NET Core

  • AI & low/no code builders

    • Lovable
    • Bolt.new
    • Claude
    • Cursor

Get to know Niklaus M

Niklaus M

Best Quality Work Guaranteed!!!

5.0(11)
  • FromPakistan
  • Member sinceMar 2019
  • Last delivery1 year

  • Languages

    Urdu, English, Hindi
Professional full stack web developer with 7+ years of experience. I build complete web apps, REST APIs, scrapers, and integrate AI (OpenAI, Claude, chatbots). Skills: - Node.js, Express, NestJS, .NET - React, Next.js, Angular - MySQL, PostgreSQL, SQL Server, MongoDB, Supabase - Sequelize, Mongoose, Socket.io - Web scraping (Puppeteer), automation - Stripe payments & third-party APIs - AI integration (OpenAI, Claude, RAG) - Docker, Git, cloud (Azure, AWS, DigitalOcean) Clean, reliable code delivered on time. Contact me before ordering to discuss your project!
Reviews

11 reviews for this Gig
5.0

(11)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    5
  • Service as described
    5
Sort By
Most relevant
  • J

    jaydunmo

    NG

    Nigeria

    5

    This is my first project with him. It was an extension of an existing code base that is quite complex, but he impressed me with how he quickly understood the code, improved on it significantly and completed the task on time. I strongly recommend him.

    Up to $50

    Price

    7 days

    Duration

    Helpful?
    Yes
    No
  • A
    image-docs

    abood29

    DK

    Denmark

    5

    I highly recommend to anyone looking for top-notch service and look forward to future collaborations.

    Up to $50

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • U

    us34841219

    Repeat Client

    US

    United States

    5

    Excellent backend web developer, It solved the issue right away without hesitation and very knowledged in web development.

    Helpful?
    Yes
    No
  • U

    us34841219

    Repeat Client

    US

    United States

    5

    The delivery was very satisfactory and excellent solving the issue. He is also good communication and keeping time accurately. I strongly recommend working with him.

    Helpful?
    Yes
    No
  • C
    image-docs

    crishinarejos

    ES

    Spain

    5

    Excellent work! Very profesional.

    Helpful?
    Yes
    No
Reviews

11 reviews for this Gig
5.0

(11)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    5
  • Service as described
    5
Sort By
Most relevant
  • J

    jaydunmo

    NG

    Nigeria

    5

    This is my first project with him. It was an extension of an existing code base that is quite complex, but he impressed me with how he quickly understood the code, improved on it significantly and completed the task on time. I strongly recommend him.

    Up to $50

    Price

    7 days

    Duration

    Helpful?
    Yes
    No
  • A
    image-docs

    abood29

    DK

    Denmark

    5

    I highly recommend to anyone looking for top-notch service and look forward to future collaborations.

    Up to $50

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
  • U

    us34841219

    Repeat Client

    US

    United States

    5

    Excellent backend web developer, It solved the issue right away without hesitation and very knowledged in web development.

    Helpful?
    Yes
    No
  • U

    us34841219

    Repeat Client

    US

    United States

    5

    The delivery was very satisfactory and excellent solving the issue. He is also good communication and keeping time accurately. I strongly recommend working with him.

    Helpful?
    Yes
    No
  • C
    image-docs

    crishinarejos

    ES

    Spain

    5

    Excellent work! Very profesional.

    Helpful?
    Yes
    No

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