Our approach as a company

We work together with the client to understand their requirements and build scalable and secure solutions tailored to their needs following these steps:

1. Development

We specialize in developing custom web applications. We work closely with clients to understand their requirements and develop together. We follow an agile approach to ensure the project is delivered on time and within budget.

2. Code Review and Optimization

We can review your existing codebase, identify potential issues, and suggest improvements to optimize performance, enhance security, and ensure code quality.

3. Consulting and Technical Guidance

We offer consulting services to assist clients in making informed decisions regarding their projects. We provide technical guidance, best practices, and recommendations to help you achieve your development goals.

4. Training and Workshops

We conduct training sessions and workshops to enhance your team’s knowledge and skills. Our sessions cover various topics, including advanced concepts, best practices, and efficient development techniques.

Who am I ?

Ayush Tiwari

My name is Ayush Tiwari and I am the founder of Cartesian Trees Tech Consulting.

I live in Paris, France.

I speak English(native), French(professional), and Hindi.

I am a regular open source contributor, contributing to Stripe Payment API, Facebook CAPI, Metabase and Pyodide.

I have worked in various American and French companies and clients, from open source to proprietary software, from developing version control systems to implementing the Facebook Conversion API, from e2e tested web apps to developing payment APIs.


Indian Institute of Technology, Roorkee

B.Tech, Jun 2012 - Jun 2016

Skills and expertise

  • Programming Languages: Python, JavaScript, HTML, CSS
  • Web Development: API Development (Zope, Django), FastAPI, React, NextJS
  • Cloud and Infrastructure: GCP, Kubernetes
  • Data Science and Machine Learning: Pyodide, Jupyter, NumPy, SciPy, spaCy (NLP)
  • Other Technologies: Unix (Bash), Git, SQL, PostgreSQL, Buildout, Metabase (BI), ERP5, GTM, FB Marketing API, Stripe API
  • Design and Development: Continuous Integration, Unit Testing, Contribution to Open Source projects