Justine Nicolao

Software Engineer

📍 Nairobi, Kenya

About

Software Engineer with four years of experience building and shipping production applications. I care about building software that is simple to reason about, reliable in production, and valuable to the people who use it.

Connect

Gmail LinkedIn GitHub Medium X (Twitter)

Frontend Engineering

React & Next.js

React 19, App Router, Server Components, SSR / SSG / ISR, API Routes, State Management, Reusable Component Systems

TypeScript

Type-Safe APIs, Modern JavaScript

Flutter & Dart

Cross-platform Mobile Apps

Styling & UI

Tailwind CSS 4, SASS/SCSS, Responsive Design, Design Systems, Figma

Quality, Security & Accessibility

Testing

Jest, React Testing Library, Cypress, Test-Driven Development

Accessibility

WCAG 2.1 AA, Semantic HTML, ARIA, Keyboard Navigation

Frontend Security

XSS Prevention, CSP Headers, Secure Cookie & Token Handling, JWT Authentication

Performance & SEO

Code Splitting, Bundle Analysis, Core Web Vitals, Lighthouse Audits, Metadata & Open Graph, Structured Data

Backend & Data

Node.js

Express, REST APIs, Authentication

Python

Django, Flask

Databases

PostgreSQL, MySQL, MongoDB, Redis, Supabase, Firebase

Platforms & Practices

Build Tooling

Turbopack, Webpack, Vite

Cloud & DevOps

AWS, Azure, Docker, Sentry, GitHub Actions, Vercel, Jenkins, NGINX

Engineering Practices

Code Reviews, Agile & Scrum, Technical Documentation, Mentoring