I will build and test your nodejs backend system

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danteozio
D
danteozio
Duncan Njoroge
build and test your nodejs backend system
build and test your nodejs backend system
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build and test your nodejs backend systembuild and test your nodejs backend systembuild and test your nodejs backend systembuild and test your nodejs backend system

About this gig

Are you looking for a secure, scalable backend API or need your web application tested for security vulnerabilities? You've come to the right place.

I specialize in Node.js backend development, RESTful API architecture, and web application security testing. Whether you are building a new application from scratch or need an existing backend audited and debugged, I deliver clean, robust code and practical security insights.


What I Offer:

  • Custom Backend Development: Building custom REST APIs, middleware, and database integrations (MongoDB/SQL) using Node.js & Express.
  • Security & Vulnerability Testing: Auditing web applications and APIs for common security flaws (OWASP Top 10, authentication bypasses, broken access control).
  • Bug Fixing & Optimization: Debugging backend issues, fixing server errors, and setting up proper security headers & rate limiting.

Why Work With Me?

  • Code-First & Transparent: All architectural patterns follow clean code practices with open-source project standards.
  • Security-Minded Approach: I write backend code with built-in protection against security risks from day one.
  • Clear Documentation: Clean, documented code and clear reports on security checks.


  • Website type

    • Business

  • Programming language

    • HTML & CSS
    • JavaScript
    • Kotlin
    • Node.js

  • Website features

    • Marketing
    • Payment
    • Events
    • Dashboard
    • Landing page
    • User Authentication
    • Admin Panel
    • API integration
    • AI integration
    • Database integration
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Get to know Duncan Njoroge

Duncan Njoroge

Node js and Web Application Security Specialist

  • FromKenya
  • Member sinceNov 2023

  • Languages

    Swahili, English
I am a web application security and backend developer specializing in Node.js, JavaScript, and vulnerability testing. I focus on building functional backend applications, analyzing API security, and identifying web app vulnerabilities using hands-on penetration testing techniques. Check out my GitHub projects to see my open-source code and security work

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