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Expertise

What I work with

Technologies I have shipped production code in — not a list of everything I have read about.

  • Backend

    Where I do my deepest work: API design, data modelling and the rules that hold a product together.

    • Node.js
    • Express.js
    • REST APIs
    • PHP
    • MongoDB
    • MySQL
    • SQLite

  • Frontend

    Interfaces built to be indexed, fast and maintainable by the people who own them.

    • React
    • Next.js
    • TypeScript
    • Vite
    • HTML5
    • CSS
    • Tailwind CSS
    • Bootstrap
    • Material UI

  • Mobile

    Cross-platform applications shipped to both Android and iOS from one codebase.

    • Flutter
    • Dart
    • React Native

  • Infrastructure & DevOps

    I deploy and operate the servers my applications run on, rather than handing that off.

    • Nginx
    • Ubuntu
    • Docker
    • Linux
    • CI/CD
    • GitHub
    • Firebase
    • Supabase

  • Engineering practice

    Formal modelling before code — a habit from a management-computing degree, kept because it works.

    • UML
    • MERISE
    • OOP
    • PowerAMC
    • DbMain
    • StarUML

  • Languages

    The languages I have shipped production code in.

    • JavaScript
    • TypeScript
    • Dart
    • PHP
    • C#
    • Java
    • Visual Basic

Additional knowledge

  • LLM integration
  • MOODLE
  • Meta Business Suite
  • Canva
  • Cristal Reports
  • Android Studio
Contact

Let's build something reliable

Tell me about the system you need. I read every message.

Contact meView my work

  • Email

    jeffreychoguen@colisgo.org

  • Location

    Yaoundé, Cameroon · remote

  • Languages

    French · English