Katana Yaa

Katana YaaFull-Stack Software Developer

I build, fix, and improve web applications.

I help businesses turn ideas, broken applications, and complicated requirements into reliable software using React, TypeScript, Node.js, APIs, and modern databases.

View My WorkWork With Me

Capabilities

  • 01

    Full-Stack Development

    Interface, services, and data, built as one system.

  • 02

    React & Next.js

    Fast, accessible front ends with clean structure.

  • 03

    Node.js APIs

    Backend services with clear, predictable contracts.

  • 04

    Application Debugging

    Tracing problems to the root cause, then fixing them.

  • 05

    Database Development

    Schemas, queries, and migrations that hold up.

Selected work

Featured Work

Applications built, fixed, and improved for real users.

  1. TechOps Hub logo

    01

    TechOps Hub

    Multi-Tenant IT Operations Platform

    An in-progress platform for small technology-service businesses. Explore a frontend preview of service tickets, customer device profiles, appointments, and invoices using fictional sample data. The backend is being developed around organizations, memberships, and role-aware access.

    • React
    • TypeScript
    • NestJS
    • PostgreSQL
    • TypeORM
    • Clerk
    Architecture
    Multi-tenant domain model with organizations, memberships, and authorization boundaries.
    Backend
    NestJS API layer backed by PostgreSQL and TypeORM for production-style data workflows.
    Delivery
    Built to demonstrate auth, testing, CI, and deployment concerns as the app matures.
    Explore Live Demo(opens in a new tab)In development
  2. My Tech Hero logo

    02

    My Tech Hero

    Technology Support Business Website

    A website for my technology support business, helping people understand the services available and take the next step toward getting help. The focus is clear service information, approachable language, and a straightforward support-request process.

    • React
    • Cloudflare
    • Turnstile
    • Resend
    View Case StudyVisit Live Website(opens in a new tab)

  3. 03

    Enterprise Clinical Platform

    Enterprise Configuration & Workflow Platform

    An enterprise configuration and workflow application, with a React and Redux-Saga front end and Node.js services backed by Oracle.

    • React
    • Redux-Saga
    • Node.js
    • Oracle
    Coming soon

Services

How I can help

Most projects start in one of three places. Find the one that sounds like yours.

  • 01

    Build

    “I need an application or website built.”

    • Full-stack applications
    • React and Next.js interfaces
    • Node.js APIs
    • Database-backed systems
    • Business websites
  • 02

    Fix

    “I already have software, but something isn't working.”

    • Debugging and bug fixing
    • Frontend issues
    • API issues
    • Database issues
    • Troubleshooting existing applications
  • 03

    Improve

    “My application works, but it needs to be better.”

    • Modernizing older code and stacks
    • Performance and UX improvements
    • Architecture cleanup
    • New feature development
    • Authentication and authorization
    • Production readiness

About

Software built to be relied on.

I’m Katana Yaa, a full-stack developer who helps businesses build new applications, fix frustrating problems, and improve the software they already depend on.

My experience spans enterprise applications and small-business websites, including frontend development, backend services, databases, and production support. Supporting applications after launch has taught me to look beyond whether a feature works once and consider how people will use and maintain it every day.

When we work together, I focus on understanding what you need, explaining technical decisions clearly, and finding practical solutions. Whether you have an idea to develop or an existing application that needs attention, I can help you work through the next steps.

  • Understand the problem

    Clarify your goals, users, and what needs to improve.

  • Build with purpose

    Connect the interface, services, and data around those needs.

  • Support what comes next

    Troubleshoot issues and make future changes easier.

Let’s Talk

Orbit Breaker

Take a quick space break.

Pilot your ship, break up the asteroids, and see how long you can last. No experience needed. Press Play when you are ready.

Score
0
Best
0
Wave
1

Orbit Breaker

  • Shoot the asteroids and dodge the rest. You have three lives.
  • Keyboard: ← → or A / D to turn, ↑ or W to thrust, Space to shoot.
  • Touch: use the buttons under the screen.

Contact

Have a project that needs to get across the finish line?

Tell me what you’re building, what’s not working, or what you’d like to improve.

Where are you starting from?

Each option opens an email to [email protected] with a matching subject line.

Helpful to include

  • What the application does today
  • What is broken, or what you want changed
  • Any deadline you are working toward
Start a Project

Or email [email protected]